Instruction:
作为 Java 安全专家，检测此代码中的安全漏洞：
## 内容1
### 文件路径：
src/main/java/com/mxgraph/online/ProxyServlet.java
### 代码内容：
package com.mxgraph.online;

import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.net.UnknownHostException;
import java.net.InetAddress;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.google.apphosting.api.DeadlineExceededException;
import com.mxgraph.online.Utils.UnsupportedContentException;

/**
 * Servlet implementation ProxyServlet
 */
@SuppressWarnings("serial")
public class ProxyServlet extends HttpServlet
{
	private static final Logger log = Logger
			.getLogger(HttpServlet.class.getName());

	/**
	 * Buffer size for content pass-through.
	 */
	private static int BUFFER_SIZE = 3 * 1024;

	/**
	 * GAE deadline is 30 secs so timeout before that to avoid
	 * HardDeadlineExceeded errors.
	 */
	private static final int TIMEOUT = 29000;

	/**
	 * A resuable empty byte array instance.
	 */
	private static byte[] emptyBytes = new byte[0];

	/**
	 * @see HttpServlet#HttpServlet()
	 */
	public ProxyServlet()
	{
		super();
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException
	{
		String urlParam = request.getParameter("url");

		if (checkUrlParameter(urlParam))
		{
			// build the UML source from the compressed request parameter
			String ref = request.getHeader("referer");
			String ua = request.getHeader("User-Agent");
			String auth = request.getHeader("Authorization");
			String dom = getCorsDomain(ref, ua);

			try(OutputStream out = response.getOutputStream())
			{
				request.setCharacterEncoding("UTF-8");
				response.setCharacterEncoding("UTF-8");

				URL url = new URL(urlParam);
				URLConnection connection = url.openConnection();
				connection.setConnectTimeout(TIMEOUT);
				connection.setReadTimeout(TIMEOUT);

				response.setHeader("Cache-Control", "private, max-age=86400");

				// Workaround for 451 response from Iconfinder CDN
				connection.setRequestProperty("User-Agent", "draw.io");

				//Forward auth header
				if (auth  !=  null)
				{
					connection.setRequestProperty("Authorization", auth);
				}

				if (dom != null && dom.length() > 0)
				{
					response.addHeader("Access-Control-Allow-Origin", dom);
				}

				// Status code pass-through and follow redirects
				if (connection instanceof HttpURLConnection)
				{
					((HttpURLConnection) connection)
							.setInstanceFollowRedirects(true);
					int status = ((HttpURLConnection) connection)
							.getResponseCode();
					int counter = 0;

					// Follows a maximum of 6 redirects
					while (counter++ <= 6
							&& (status == HttpURLConnection.HTTP_MOVED_PERM
									|| status == HttpURLConnection.HTTP_MOVED_TEMP))
					{
						String redirectUrl = connection.getHeaderField("Location");

						if (!checkUrlParameter(redirectUrl))
						{
							break;
						}

						url = new URL(redirectUrl);
						connection = url.openConnection();
						((HttpURLConnection) connection)
								.setInstanceFollowRedirects(true);
						connection.setConnectTimeout(TIMEOUT);
						connection.setReadTimeout(TIMEOUT);

						// Workaround for 451 response from Iconfinder CDN
						connection.setRequestProperty("User-Agent", "draw.io");
						status = ((HttpURLConnection) connection)
								.getResponseCode();
					}

					if (status >= 200 && status <= 299)
					{
						response.setStatus(status);

						// Copies input stream to output stream
						InputStream is = connection.getInputStream();
						byte[] head = (contentAlwaysAllowed(urlParam)) ? emptyBytes
								: Utils.checkStreamContent(is);
						response.setContentType("application/octet-stream");
						String base64 = request.getParameter("base64");
						copyResponse(is, out, head,
								base64 != null && base64.equals("1"));
					}
					else
					{
						response.setStatus(HttpURLConnection.HTTP_PRECON_FAILED);
					}
				}
				else
				{
					response.setStatus(HttpURLConnection.HTTP_UNSUPPORTED_TYPE);
				}

				out.flush();

				log.log(Level.FINEST, "processed proxy request: url="
						+ ((urlParam != null) ? urlParam : "[null]")
						+ ", referer=" + ((ref != null) ? ref : "[null]")
						+ ", user agent=" + ((ua != null) ? ua : "[null]"));
			}
			catch (DeadlineExceededException e)
			{
				response.setStatus(HttpServletResponse.SC_REQUEST_TIMEOUT);
			}
			catch (UnknownHostException | FileNotFoundException e)
			{
				// do not log 404 and DNS errors
				response.setStatus(HttpServletResponse.SC_NOT_FOUND);
			}
			catch (UnsupportedContentException e)
			{
				response.setStatus(HttpServletResponse.SC_FORBIDDEN);
				log.log(Level.SEVERE, "proxy request with invalid content: url="
						+ ((urlParam != null) ? urlParam : "[null]")
						+ ", referer=" + ((ref != null) ? ref : "[null]")
						+ ", user agent=" + ((ua != null) ? ua : "[null]"));
			}
			catch (Exception e)
			{
				response.setStatus(
						HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
				log.log(Level.FINE, "proxy request failed: url="
						+ ((urlParam != null) ? urlParam : "[null]")
						+ ", referer=" + ((ref != null) ? ref : "[null]")
						+ ", user agent=" + ((ua != null) ? ua : "[null]"));
				e.printStackTrace();
			}
		}
		else
		{
			response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
			log.log(Level.SEVERE,
					"proxy request with invalid URL parameter: url="
							+ ((urlParam != null) ? urlParam : "[null]"));
		}
	}

	/**
	 * Dynamically generated CORS header for known domains.
	 * @throws IOException
	 */
	protected void copyResponse(InputStream is, OutputStream out, byte[] head,
			boolean base64) throws IOException
	{
		if (base64)
		{
			try (BufferedInputStream in = new BufferedInputStream(is,
					BUFFER_SIZE))
			{
				ByteArrayOutputStream os = new ByteArrayOutputStream();
			    byte[] buffer = new byte[0xFFFF];

				os.write(head, 0, head.length);

			    for (int len = is.read(buffer); len != -1; len = is.read(buffer))
			    {
			        os.write(buffer, 0, len);
			    }

				out.write(mxBase64.encodeToString(os.toByteArray(), false).getBytes());
			}
		}
		else
		{
			out.write(head);
			Utils.copy(is, out);
		}
	}

	/**
	 * Checks if the URL parameter is legal.
	 */
	public boolean checkUrlParameter(String url)
	{
		if (url != null)
		{
			try
			{
				URL parsedUrl = new URL(url);
				String protocol = parsedUrl.getProtocol();
				String host = parsedUrl.getHost();
				InetAddress address = InetAddress.getByName(host);
				String hostAddress = address.getHostAddress();
				host = host.toLowerCase();

				return (protocol.equals("http") || protocol.equals("https"))
						&& !address.isAnyLocalAddress()
						&& !address.isLoopbackAddress()
						&& !host.endsWith(".internal") // Redundant
						&& !host.endsWith(".local") // Redundant
						&& !host.contains("localhost") // Redundant
						&& !hostAddress.startsWith("0.") // 0.0.0.0/8
						&& !hostAddress.startsWith("10.") // 10.0.0.0/8
						&& !hostAddress.startsWith("127.") // 127.0.0.0/8
						&& !hostAddress.startsWith("169.254.") // 169.254.0.0/16
						&& !hostAddress.startsWith("172.16.") // 172.16.0.0/12
						&& !hostAddress.startsWith("172.17.") // 172.16.0.0/12
						&& !hostAddress.startsWith("172.18.") // 172.16.0.0/12
						&& !hostAddress.startsWith("172.19.") // 172.16.0.0/12
						&& !hostAddress.startsWith("172.20.") // 172.16.0.0/12
						&& !hostAddress.startsWith("172.21.") // 172.16.0.0/12
						&& !hostAddress.startsWith("172.22.") // 172.16.0.0/12
						&& !hostAddress.startsWith("172.23.") // 172.16.0.0/12
						&& !hostAddress.startsWith("172.24.") // 172.16.0.0/12
						&& !hostAddress.startsWith("172.25.") // 172.16.0.0/12
						&& !hostAddress.startsWith("172.26.") // 172.16.0.0/12
						&& !hostAddress.startsWith("172.27.") // 172.16.0.0/12
						&& !hostAddress.startsWith("172.28.") // 172.16.0.0/12
						&& !hostAddress.startsWith("172.29.") // 172.16.0.0/12
						&& !hostAddress.startsWith("172.30.") // 172.16.0.0/12
						&& !hostAddress.startsWith("172.31.") // 172.16.0.0/12
						&& !hostAddress.startsWith("192.0.0.") // 192.0.0.0/24
						&& !hostAddress.startsWith("192.168.") // 192.168.0.0/16
						&& !hostAddress.startsWith("198.18.") // 198.18.0.0/15
						&& !hostAddress.startsWith("198.19.") // 198.18.0.0/15
						&& !host.endsWith(".arpa"); // reverse domain (needed?)
			}
			catch (MalformedURLException e)
			{
				return false;
			}
			catch (UnknownHostException e)
			{
				return false;
			}
		}
		else
		{
			return false;
		}
	}

	/**
	 * Returns true if the content check should be omitted.
	 */
	public boolean contentAlwaysAllowed(String url)
	{
		return url.toLowerCase()
				.startsWith("https://trello-attachments.s3.amazonaws.com/")
				|| url.toLowerCase().startsWith("https://docs.google.com/");
	}

	/**
	 * Gets CORS header for request. Returning null means do not respond.
	 */
	protected String getCorsDomain(String referer, String userAgent)
	{
		String dom = null;

		if (referer != null && referer.toLowerCase()
				.matches("https?://([a-z0-9,-]+[.])*draw[.]io/.*"))
		{
			dom = referer.toLowerCase().substring(0,
					referer.indexOf(".draw.io/") + 8);
		}
		else if (referer != null && referer.toLowerCase()
				.matches("https?://([a-z0-9,-]+[.])*diagrams[.]net/.*"))
		{
			dom = referer.toLowerCase().substring(0,
					referer.indexOf(".diagrams.net/") + 13);
		}
		else if (referer != null && referer.toLowerCase()
				.matches("https?://([a-z0-9,-]+[.])*quipelements[.]com/.*"))
		{
			dom = referer.toLowerCase().substring(0,
					referer.indexOf(".quipelements.com/") + 17);
		}
		// Enables Confluence/Jira proxy via referer or hardcoded user-agent (for old versions)
		// UA refers to old FF on macOS so low risk and fixes requests from existing servers
		else if ((referer != null
				&& referer.equals("draw.io Proxy Confluence Server"))
				|| (userAgent != null && userAgent.equals(
						"Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:50.0) Gecko/20100101 Firefox/50.0")))
		{
			dom = "";
		}

		return dom;
	}

}

Output:
【漏洞类型】开放重定向漏洞
【严重性】Medium
【漏洞摘要】这个代码存在开放重定向漏洞，因为它没有对重定向 URL 进行充分的验证。在 `doGet` 方法中，当接收到的 URL 返回 301 或 302 状态码时，代码会直接使用重定向 URL 进行连接，而没有检查其合法性。这可能导致攻击者利用该漏洞将用户重定向到恶意网站。具体表现为在 `while` 循环中，当遇到重定向时，`urlParam` 被替换为 `redirectUrl`，但没有再次调用 `checkUrlParameter` 方法来验证新的 URL。
【关键代码模式】URLConnection, setInstanceFollowRedirects, getResponseCode, getHeaderField("Location")
【修复方法说明】在每次遇到重定向时，重新调用 `checkUrlParameter` 方法来验证新的 URL。这样可以确保重定向的 URL 是合法的。


Instruction:
作为 Java 安全专家，检测此代码中的安全漏洞：
## 内容1
### 文件路径：
src/main/java/com/mxgraph/online/WellKnownServlet.java
### 代码内容：
package com.mxgraph.online;

import java.io.IOException;
import java.io.InputStream;
import java.util.logging.Logger;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet to fake a .well-known directory
 */
@SuppressWarnings("serial")
public class WellKnownServlet extends HttpServlet
{
	private static final Logger log = Logger
			.getLogger(HttpServlet.class.getName());

	/**
	 * @see HttpServlet#HttpServlet()
	 */
	public WellKnownServlet()
	{
		super();
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException
	{
        // GAE can't serve dot prefixed folders
        String uri = request.getRequestURI().replace("/.", "/");

        if (uri.toLowerCase().contains(".json"))
        {
        	response.setContentType("application/json");
        }

        // Serve whatever was requested from .well-known
        try (InputStream in = getServletContext().getResourceAsStream(uri))
        {
            if (in == null)
            {
            	response.sendError(404);
                return;
            }

            byte[] buffer = new byte[8192];
            int count;

            while ((count = in.read(buffer)) > 0)
            {
            	response.getOutputStream().write(buffer, 0, count);
            }

            response.getOutputStream().flush();
            response.getOutputStream().close();
        }
    }
}


Instruction:
作为 Java 安全专家，检测此代码中的安全漏洞：
## 内容1
### 文件路径：
web/src/main/java/org/akaza/openclinica/control/admin/DownloadVersionSpreadSheetServlet.java
### 代码内容：
/* OpenClinica is distributed under the
 * GNU Lesser General Public License (GNU LGPL).

 * For details see: http://www.openclinica.org/license
 * copyright 2003-2005 Akaza Research
 */
package org.akaza.openclinica.control.admin;

import org.akaza.openclinica.bean.core.Role;
import org.akaza.openclinica.bean.submit.CRFVersionBean;
import org.akaza.openclinica.control.SpringServletAccess;
import org.akaza.openclinica.control.core.SecureController;
import org.akaza.openclinica.control.form.FormProcessor;
import org.akaza.openclinica.dao.core.CoreResources;
import org.akaza.openclinica.dao.submit.CRFVersionDAO;
import org.akaza.openclinica.view.Page;
import org.akaza.openclinica.web.InsufficientPermissionException;
import org.akaza.openclinica.web.SQLInitServlet;
import org.apache.commons.io.FilenameUtils;

import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;

import javax.servlet.ServletOutputStream;

/**
 * @author jxu
 *         <p/>
 *         TODO To change the template for this generated type comment go to Window - Preferences - Java - Code Style -
 *         Code Templates
 */
public class DownloadVersionSpreadSheetServlet extends SecureController {
    public static String CRF_ID = "crfId";

    public static String CRF_VERSION_NAME = "crfVersionName";

    public static String CRF_VERSION_ID = "crfVersionId";

    public static String CRF_VERSION_TEMPLATE = "CRF_Design_Template_v3.10.xls";

    /**
     *
     */
    @Override
    public void mayProceed() throws InsufficientPermissionException {
        if (ub.isSysAdmin()) {
            return;
        }

        if (currentRole.getRole().equals(Role.STUDYDIRECTOR) || currentRole.getRole().equals(Role.COORDINATOR)) {
            return;
        }

        addPageMessage(respage.getString("no_have_correct_privilege_current_study") + respage.getString("change_study_contact_sysadmin"));
        throw new InsufficientPermissionException(Page.MANAGE_STUDY_SERVLET, resexception.getString("not_study_director"), "1");

    }

    private CoreResources getCoreResources() {
        return (CoreResources) SpringServletAccess.getApplicationContext(context).getBean("coreResources");
    }

    @Override
    public void processRequest() throws Exception {
        String dir = SQLInitServlet.getField("filePath") + "crf" + File.separator + "new" + File.separator;
        // YW 09-10-2007 << Now CRF_Design_Template_v2.xls is located at
        // $CATALINA_HOME/webapps/OpenClinica-instanceName/properties
        FormProcessor fp = new FormProcessor(request);

        String crfIdString = fp.getString(CRF_ID);
        int crfVersionId = fp.getInt(CRF_VERSION_ID);

        CRFVersionDAO cvdao = new CRFVersionDAO(sm.getDataSource());

        CRFVersionBean version = (CRFVersionBean) cvdao.findByPK(crfVersionId);

        boolean isTemplate = fp.getBoolean("template");

        String excelFileName = FilenameUtils.getName(crfIdString + version.getOid() + ".xls");

        // aha, what if it's the old style? next line is for backwards compat,
        // tbh 07/2008
        File excelFile = null;
        String oldExcelFileName = FilenameUtils.getName(crfIdString + version.getName() + ".xls");
        if (isTemplate) {
            // excelFile = new File(dir + CRF_VERSION_TEMPLATE);
            excelFile = getCoreResources().getFile(CRF_VERSION_TEMPLATE, "crf" + File.separator + "original" + File.separator);
            excelFileName = CRF_VERSION_TEMPLATE;
            // FileOutputStream fos = new FileOutputStream(excelFile);
            // IOUtils.copy(getCoreResources().getInputStream(CRF_VERSION_TEMPLATE), fos);
            // IOUtils.closeQuietly(fos);
        } else {
        	// fix path traversal issue
            excelFile = new File(dir,excelFileName);
            // backwards compat
            File oldExcelFile = new File(dir, oldExcelFileName);

        	if (oldExcelFile.exists() && oldExcelFile.length() > 0) {
                 if (!excelFile.exists() || excelFile.length() <= 0) {
                     // if the old name exists and the new name does not...
                     excelFile = oldExcelFile;
                     excelFileName = oldExcelFileName;
                 }
             }

        }
        logger.info("looking for : " + excelFile.getName());
        if (!excelFile.exists() || excelFile.length() <= 0) {
            addPageMessage(respage.getString("the_excel_is_not_available_on_server_contact"));
            forwardPage(Page.CRF_LIST_SERVLET);
        } else {
            response.setHeader("Content-disposition", "attachment; filename=\"" + excelFileName + "\";");
            response.setContentType("application/vnd.ms-excel");
            response.setHeader("Pragma", "public");

            ServletOutputStream op = response.getOutputStream();
            DataInputStream in = null;
            try {
                response.setContentType("application/vnd.ms-excel");
                response.setHeader("Pragma", "public");
                response.setContentLength((int) excelFile.length());

                byte[] bbuf = new byte[(int) excelFile.length()];
                in = new DataInputStream(new FileInputStream(excelFile));
                int length;
                while ((in != null) && ((length = in.read(bbuf)) != -1)) {
                    op.write(bbuf, 0, length);
                }

                in.close();
                op.flush();
                op.close();
            } catch (Exception ee) {
                ee.printStackTrace();
            } finally {
                if (in != null) {
                    in.close();
                }
                if (op != null) {
                    op.close();
                }
            }
        }

    }
}

## 内容2
### 文件路径：
web/src/main/java/org/akaza/openclinica/control/submit/DownloadAttachedFileServlet.java
### 代码内容：
/*
 * OpenClinica is distributed under the
 * GNU Lesser General Public License (GNU LGPL).

 * For details see: http://www.openclinica.org/license
 * copyright 2003-2005 Akaza Research
 */
package org.akaza.openclinica.control.submit;

import org.akaza.openclinica.bean.core.Utils;
import org.akaza.openclinica.bean.managestudy.StudyBean;
import org.akaza.openclinica.control.core.SecureController;
import org.akaza.openclinica.control.form.FormProcessor;
import org.akaza.openclinica.dao.managestudy.StudyDAO;
import org.akaza.openclinica.dao.submit.EventCRFDAO;
import org.akaza.openclinica.i18n.core.LocaleResolver;
import org.akaza.openclinica.view.Page;
import org.akaza.openclinica.web.InsufficientPermissionException;

import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.util.ArrayList;
import java.util.Locale;

import javax.servlet.ServletOutputStream;

/**
 * @author ywang (Dec., 2008)
 */
public class DownloadAttachedFileServlet extends SecureController {

    /**
     * Checks whether the user has the correct privilege
     */
    @Override
    public void mayProceed() throws InsufficientPermissionException {
        Locale locale = LocaleResolver.getLocale(request);
        FormProcessor fp = new FormProcessor(request);
/*        int eventCRFId = fp.getInt("eventCRFId");
        EventCRFDAO edao = new EventCRFDAO(sm.getDataSource());

        if (eventCRFId > 0) {
            if (!entityIncluded(eventCRFId, ub.getName(), edao, sm.getDataSource())) {
                request.setAttribute("downloadStatus", "false");
                addPageMessage(respage.getString("you_not_have_permission_download_attached_file"));
                throw new InsufficientPermissionException(Page.DOWNLOAD_ATTACHED_FILE, resexception.getString("no_permission"), "1");
            }
        } else {
            request.setAttribute("downloadStatus", "false");
            addPageMessage(respage.getString("you_not_have_permission_download_attached_file"));
            throw new InsufficientPermissionException(Page.DOWNLOAD_ATTACHED_FILE, resexception.getString("no_permission"), "1");
        }*/

        if (ub.isSysAdmin()) {
            return;
        }
        if (SubmitDataServlet.mayViewData(ub, currentRole)) {
            return;
        }

        request.setAttribute("downloadStatus", "false");
        addPageMessage(respage.getString("you_not_have_permission_download_attached_file"));
        throw new InsufficientPermissionException(Page.DOWNLOAD_ATTACHED_FILE, resexception.getString("no_permission"), "1");
    }

    @Override
    public void processRequest() throws Exception {
        FormProcessor fp = new FormProcessor(request);
        String filePathName = "";
        String fileName = fp.getString("fileName");
        File f = new File(fileName);

        if(fileName != null && fileName.indexOf("..") > -1) {
        	throw new RuntimeException("Traversal attempt - absolute path not allowed " + fileName);
        }

        if (fileName != null && fileName.length() > 0) {
            int parentStudyId = currentStudy.getParentStudyId();
            String testPath = Utils.getAttachedFileRootPath();
            String tail = File.separator + f.getName();
            String testName = testPath + currentStudy.getOid() + tail;
            File temp = new File(testName);
            if (temp.exists()) {
                filePathName = testName;
                logger.info(currentStudy.getName() + " existing filePathName=" + filePathName);
            } else {
                if (currentStudy.isSite(parentStudyId)) {
                    testName = testPath + ((StudyBean) new StudyDAO(sm.getDataSource()).findByPK(parentStudyId)).getOid() + tail;
                    temp = new File(testName);
                    if (temp.exists()) {
                        filePathName = testName;
                        logger.info("parent existing filePathName=" + filePathName);
                    }
                } else {
                    ArrayList<StudyBean> sites = (ArrayList<StudyBean>) new StudyDAO(sm.getDataSource()).findAllByParent(currentStudy.getId());
                    for (StudyBean s : sites) {
                        testPath = Utils.getAttachedFilePath(s);
                        testName = testPath + tail;//+ s.getIdentifier() + tail;
                        File test = new File(testName);
                        if (test.exists()) {
                            filePathName = testName;
                            logger.info("site of currentStudy existing filePathName=" + filePathName);
                            break;
                        }
                    }
                }
            }
        }
        logger.info("filePathName=" + filePathName + " fileName=" + fileName);
        File file = new File(filePathName);
        if (!file.exists() || file.length() <= 0) {
            addPageMessage("File " + filePathName + " " + respage.getString("not_exist"));

            // try to use the passed in the existing file
        	file = new File(fileName);
        }

        if (!file.exists() || file.length() <= 0) {
            addPageMessage("File " + filePathName + " " + respage.getString("not_exist"));
        } else {
//            response.setContentType("application/octet-stream");
            response.setHeader("Content-disposition", "attachment; filename=\"" + fileName + "\";");
            response.setHeader("Pragma", "public");

            ServletOutputStream outStream = response.getOutputStream();
            DataInputStream inStream = null;
            try {
                response.setContentType("application/download");
                response.setHeader("Cache-Control", "max-age=0");
                response.setContentLength((int) file.length());

                byte[] bbuf = new byte[(int) file.length()];
                inStream = new DataInputStream(new FileInputStream(file));
                int length;
                while (inStream != null && (length = inStream.read(bbuf)) != -1) {
                    outStream.write(bbuf, 0, length);
                }

                inStream.close();
                outStream.flush();
                outStream.close();
            } catch (Exception ee) {
                ee.printStackTrace();
            } finally {
                if (inStream != null) {
                    inStream.close();
                }
                if (outStream != null) {
                    outStream.close();
                }
            }
        }
    }

}
## 内容3
### 文件路径：
web/src/main/java/org/akaza/openclinica/controller/BatchCRFMigrationController.java
### 代码内容：
package org.akaza.openclinica.controller;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import java.util.ResourceBundle;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

import org.akaza.openclinica.bean.admin.CRFBean;
import org.akaza.openclinica.bean.core.Role;
import org.akaza.openclinica.bean.core.SubjectEventStatus;
import org.akaza.openclinica.bean.login.StudyUserRoleBean;
import org.akaza.openclinica.bean.login.UserAccountBean;
import org.akaza.openclinica.bean.managestudy.EventDefinitionCRFBean;
import org.akaza.openclinica.bean.managestudy.StudyBean;
import org.akaza.openclinica.bean.managestudy.StudyEventBean;
import org.akaza.openclinica.bean.managestudy.StudyEventDefinitionBean;
import org.akaza.openclinica.bean.managestudy.StudySubjectBean;
import org.akaza.openclinica.bean.submit.CRFVersionBean;
import org.akaza.openclinica.bean.submit.EventCRFBean;
import org.akaza.openclinica.controller.helper.HelperObject;
import org.akaza.openclinica.controller.helper.ReportLog;
import org.akaza.openclinica.controller.helper.TransferObject;
import org.akaza.openclinica.core.EmailEngine;
import org.akaza.openclinica.core.OpenClinicaMailSender;
import org.akaza.openclinica.dao.admin.AuditDAO;
import org.akaza.openclinica.dao.admin.CRFDAO;
import org.akaza.openclinica.dao.core.CoreResources;
import org.akaza.openclinica.dao.hibernate.CrfVersionDao;
import org.akaza.openclinica.dao.hibernate.EventCrfDao;
import org.akaza.openclinica.dao.hibernate.StudyEventDao;
import org.akaza.openclinica.dao.hibernate.StudySubjectDao;
import org.akaza.openclinica.dao.login.UserAccountDAO;
import org.akaza.openclinica.dao.managestudy.EventDefinitionCRFDAO;
import org.akaza.openclinica.dao.managestudy.StudyDAO;
import org.akaza.openclinica.dao.managestudy.StudyEventDAO;
import org.akaza.openclinica.dao.managestudy.StudyEventDefinitionDAO;
import org.akaza.openclinica.dao.managestudy.StudySubjectDAO;
import org.akaza.openclinica.dao.submit.CRFVersionDAO;
import org.akaza.openclinica.dao.submit.EventCRFDAO;
import org.akaza.openclinica.domain.Status;
import org.akaza.openclinica.domain.datamap.CrfVersion;
import org.akaza.openclinica.domain.datamap.EventCrf;
import org.akaza.openclinica.domain.datamap.StudyEvent;
import org.akaza.openclinica.domain.datamap.StudySubject;
import org.akaza.openclinica.i18n.util.ResourceBundleProvider;
import org.apache.commons.io.FilenameUtils;
import org.apache.commons.io.IOUtils;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class BatchCRFMigrationController implements Runnable {

    @Autowired
    private DataSource dataSource;

    @Autowired
    OpenClinicaMailSender openClinicaMailSender;

    @Autowired
    private EventCrfDao eventCrfDao;

    @Autowired
    private StudySubjectDao studySubjectDao;

    @Autowired
    private StudyEventDao studyEventDao;

    @Autowired
    private CrfVersionDao crfVersionDao;

    @Autowired
    private SessionFactory sessionFactory;

    private HelperObject helperObject;

    protected final Logger logger = LoggerFactory.getLogger(getClass().getName());

    ResourceBundle resterms;
    List<EventCRFBean> eventCrfListToMigrate;
    CRFVersionBean sourceCrfVersionBean;
    CRFVersionBean targetCrfVersionBean;
    ReportLog reportLog;
    StudyBean stBean;
    CRFBean cBean;
    UserAccountBean userAccountBean;
    HttpServletRequest request;
    String urlBase;

    public BatchCRFMigrationController() {
        super();
    }

    public BatchCRFMigrationController(HelperObject helperObject) {
        this.helperObject = helperObject;
    }

    @RequestMapping(value = "/forms/migrate/{filename}/downloadLogFile")
    public void getLogFile(@PathVariable("filename") String fileName, HttpServletResponse response) throws Exception {
        InputStream inputStream = null;
        try {
        	//Validate/Sanitize user input filename using a standard library, prevent from path traversal
            String logFileName = getFilePath() + File.separator + FilenameUtils.getName(fileName);
            File fileToDownload = new File(logFileName);
            inputStream = new FileInputStream(fileToDownload);
            response.setContentType("application/force-download");
            response.setHeader("Content-Disposition", "attachment; filename=" + fileName);
            IOUtils.copy(inputStream, response.getOutputStream());
            response.flushBuffer();
        } catch (Exception e) {
            logger.debug("Request could not be completed at this moment. Please try again.");
            logger.debug(e.getStackTrace().toString());
            throw e;
        } finally {
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    logger.debug(e.getStackTrace().toString());
                    throw e;
                }
            }
        }

    }

    /**
     * @api {post} /pages/auth/api/v1/forms/migrate/run/ Batch CRF Version Migration Run
     * @apiName runAuthMigration
     * @apiPermission Authenticate using api-key. admin
     * @apiVersion 3.8.0
     * @apiParam {String} studyOID is the Target Study OID.
     * @apiParam {String} sourceFormVersion Form Version OID From.
     * @apiParam {String} targetFormVersion Form Version OID To.
     * @apiParam {String} studyEventDefs List Of Event Definitions , when left blank, implies all events within
     *           target study.
     * @apiParam {String} sites List Of Sites , when left blank, implies all sites including target study
     * @apiGroup Form
     * @apiDescription This api will execute crf version migration and return an email with link of a file that include
     *                 details of the transaction.
     * @apiParamExample {json} Request-Example:
     *                  {
     *                  "studyOID" : "S_BL101" ,
     *                  "sourceFormVersion" : "F_GROUPS_ADVER_V221" ,
     *                  "targetFormVersion" : "F_GROUPS_ADVER_V22" ,
     *                  "studyEventDefs" : [] ,
     *                  "sites" : []
     *                  }
     *
     * @apiErrorExample {json} Error-Response:
     *                  HTTP/1.1 406 NOT ACCEPTABLE
     *                  {
     *                  "errors": ["Current CRF version and New CRF version can not be same."],
     *                  "reportPreview": null,
     *                  "subjectCount": 0,
     *                  "eventCrfCount": 0,
     *                  "canNotMigrate": [],
     *                  "logs": []
     *                  }
     *
     * @apiSuccessExample {json} Success-Response:
     *                    HTTP/1.1 200 OK
     *                    {
     *                    "errors": [],
     *                    "reportPreview":
     *                    "Batch CRF version migration is running. You will receive an email once the process is complete"
     *                    ,
     *                    "subjectCount": 8,
     *                    "eventCrfCount": 12,
     *                    "canNotMigrate": [],
     *                    "logs": []
     *                    }
     */

    @Produces(MediaType.APPLICATION_JSON)
    @RequestMapping(value = "/auth/api/v1/forms/migrate/run", method = RequestMethod.POST)
    public ResponseEntity<ReportLog> runAuthMigration(@RequestBody TransferObject transferObject, HttpServletRequest request) throws Exception {

        ResponseEntity<HelperObject> res = runPreviewTest(transferObject, request);
        HelperObject helperObject = res.getBody();
        helperObject.setRequest(request);
        fillHelperObject(helperObject);
        ReportLog reportLog = helperObject.getReportLog();

        String str = "";
        if (reportLog.getSubjectCount() != 0 && reportLog.getEventCrfCount() != 0 && reportLog.getErrors().size() == 0) {
            BatchCRFMigrationController bcmController = new BatchCRFMigrationController(helperObject);
            Thread thread = new Thread(bcmController);
            thread.start();
            str = resterms.getString("Batch_CRF_version_migration_is_running_You_will_receive_an_email_once_the_process_is_complete");
            reportLog.setReportPreview(str);
            return new ResponseEntity<ReportLog>(reportLog, org.springframework.http.HttpStatus.OK);
        } else if (reportLog.getErrors().size() > 0) {
            return new ResponseEntity<ReportLog>(reportLog, org.springframework.http.HttpStatus.NOT_ACCEPTABLE);
        } else {
            str = resterms.getString("Migration_did_not_run_due_to_no_affected_subject");
            reportLog.setReportPreview(str);
            return new ResponseEntity<ReportLog>(reportLog, org.springframework.http.HttpStatus.OK);
        }
    }

    @Produces(MediaType.APPLICATION_JSON)
    @RequestMapping(value = "/api/v1/forms/migrate/run", method = RequestMethod.POST)
    public @ResponseBody String runMigration(HttpServletRequest request, HttpServletResponse response) throws Exception {
        TransferObject transferObject = getUIComponents(request);
        String crfId = request.getParameter("crfId");

        ResponseEntity<HelperObject> res = runPreviewTest(transferObject, request);
        HelperObject helperObject = res.getBody();
        fillHelperObject(helperObject);
        helperObject.setRequest(request);
        ReportLog reportLog = helperObject.getReportLog();

        String pageMessages = null;
        if (reportLog.getSubjectCount() != 0 && reportLog.getEventCrfCount() != 0 && reportLog.getErrors().size() == 0) {
            BatchCRFMigrationController bcmController = new BatchCRFMigrationController(helperObject);
            Thread thread = new Thread(bcmController);
            thread.start();

            pageMessages = resterms.getString("Batch_CRF_version_migration_is_running_You_will_receive_an_email_once_the_process_is_complete");
            return (String) redirect(request, response, "/ListCRF?module=manage" + "&isFromCRFVersionBatchChange=" + pageMessages);
        } else {
            pageMessages = resterms.getString("Error_in_Running_Migration_Please_try_again");
            return (String) redirect(request, response, "/BatchCRFMigration?module=manage&crfId=" + crfId + "&isFromCRFVersionBatchChange=" + pageMessages);
        }
    }

    /**
     * @api {post} /pages/auth/api/v1/forms/migrate/preview Batch CRF Version Migration Preview
     * @apiName runAuthPreview
     * @apiPermission Authenticate using api-key. admin
     * @apiVersion 3.8.0
     * @apiParam {String} studyOID is the Target Study OID.
     * @apiParam {String} sourceFormVersion Form Version OID From.
     * @apiParam {String} targetFormVersion Form Version OID To.
     * @apiParam {String} studyEventDefs List Of Event Definitions , when left blank, implies all events within
     *           target study.
     * @apiParam {String} sites List Of Sites , when left blank, implies all sites including target study
     * @apiGroup Form
     * @apiDescription This api is a summary report for crf version migration and returns json object of report log.
     * @apiParamExample {json} Request-Example:
     *                  {
     *                  "studyOID" : "S_BL101" ,
     *                  "sourceFormVersion" : "F_GROUPS_ADVER_V221" ,
     *                  "targetFormVersion" : "F_GROUPS_ADVER_V22" ,
     *                  "studyEventDefs" : [] ,
     *                  "sites" : []
     *                  }
     *
     * @apiErrorExample {json} Error-Response:
     *                  HTTP/1.1 406 NOT ACCEPTABLE
     *                  {
     *                  "errors": ["The OID of the Target Study that you provided is invalid."],
     *                  "reportPreview": null,
     *                  "subjectCount": 0,
     *                  "eventCrfCount": 0,
     *                  "canNotMigrate": [],
     *                  "logs": []
     *                  }
     *
     * @apiSuccessExample {json} Success-Response:
     *                    HTTP/1.1 200 OK
     *                    {
     *                    "errors": [],
     *                    "reportPreview": null,
     *                    "subjectCount": 8,
     *                    "eventCrfCount": 12,
     *                    "canNotMigrate": [],
     *                    "logs": []
     *                    }
     */
    @Produces(MediaType.APPLICATION_JSON)
    @RequestMapping(value = "/auth/api/v1/forms/migrate/preview", method = RequestMethod.POST)
    public ResponseEntity<ReportLog> runAuthPreview(@RequestBody TransferObject transferObject, HttpServletRequest request) throws Exception {

        ResponseEntity<HelperObject> res = runPreviewTest(transferObject, request);
        HelperObject helperObject = res.getBody();

        return new ResponseEntity<ReportLog>(helperObject.getReportLog(), org.springframework.http.HttpStatus.OK);
    }

    @Produces(MediaType.APPLICATION_JSON)
    @RequestMapping(value = "/api/v1/forms/migrate/preview", method = RequestMethod.POST)
    public @ResponseBody ReportLog runPreview(HttpServletRequest request, HttpServletResponse response) throws Exception {
        TransferObject transferObject = getUIComponents(request);

        ResponseEntity<HelperObject> res = runPreviewTest(transferObject, request);
        HelperObject helperObject = res.getBody();
        helperObject.getReportLog().setReportPreview(toStringHtmlFormat(helperObject.getReportLog(), resterms));
        return helperObject.getReportLog();
    }

    public void executeMigrationAction(HelperObject helperObject, EventCRFBean eventCRFBean) {
        Session session = helperObject.getSession();

        EventCrf eventCrf = helperObject.getEventCrfDao().findById(eventCRFBean.getId());
        StudyEvent studyEvent = helperObject.getStudyEventDao().findById(eventCRFBean.getStudyEventId());
        CrfVersion crfVersion = helperObject.getCrfVersionDao().findById(helperObject.getTargetCrfVersionBean().getId());
        StudySubject studySubject = helperObject.getStudySubjectDao().findById(eventCRFBean.getStudySubjectId());

        eventCrf.setSdvStatus(false);
        eventCrf.setDateUpdated(new Date());
        eventCrf.setSdvUpdateId(helperObject.getUserAccountBean().getId());
        eventCrf.setUpdateId(helperObject.getUserAccountBean().getId());
        eventCrf.setCrfVersion(crfVersion);
        session.saveOrUpdate(eventCrf);

        String status_before_update = null;
        SubjectEventStatus eventStatus = null;

        // event signed, check if subject is signed as well

        if (studySubject.getStatus() == Status.SIGNED) {
            status_before_update = auditDao().findLastStatus("study_subject", studySubject.getStudySubjectId(), "8");
            if (status_before_update != null && status_before_update.length() == 1) {
                int subject_status = Integer.parseInt(status_before_update);
                Status status = Status.getByCode(subject_status);
                studySubject.setStatus(status);
            }
            studySubject.setUpdateId(helperObject.getUserAccountBean().getId());
            session.saveOrUpdate(studySubject);

        }

        studyEvent.setUpdateId(helperObject.getUserAccountBean().getId());
        studyEvent.setDateUpdated(new Date());

        status_before_update = auditDao().findLastStatus("study_event", studyEvent.getStudyEventId(), "8");
        if (status_before_update != null && status_before_update.length() == 1) {
            int status = Integer.parseInt(status_before_update);
            eventStatus = SubjectEventStatus.get(status);
            studyEvent.setSubjectEventStatusId(eventStatus.getId());
        }

        session.saveOrUpdate(studyEvent);
    }

    @SuppressWarnings("unchecked")
    public ResponseEntity<HelperObject> runPreviewTest(TransferObject transferObject, HttpServletRequest request) throws Exception {
        HelperObject helperObject = new HelperObject();

        Locale locale = request.getLocale();
        resterms = ResourceBundleProvider.getTermsBundle(locale);
        UserAccountBean userAccountBean = getCurrentUser(request);
        ReportLog reportLog = new ReportLog();

        String studyOid = transferObject.getStudyOID();
        String sourceCrfVersion = transferObject.getSourceFormVersion();
        String targetCrfVersion = transferObject.getTargetFormVersion();
        ArrayList<String> studyEventDefnlist = transferObject.getStudyEventDefs();
        ArrayList<String> studyEventDefnlistFiltered = new ArrayList<String>();
        ArrayList<String> sitelist = transferObject.getSites();
        ArrayList<String> sitelistFiltered = new ArrayList<String>();

        CRFVersionBean sourceCrfVersionBean = cvdao().findByOid(sourceCrfVersion);
        CRFVersionBean targetCrfVersionBean = cvdao().findByOid(targetCrfVersion);

        StudyBean stBean = sdao().findByOid(studyOid);
		if (stBean == null || !stBean.getStatus().isAvailable() || stBean.getParentStudyId() != 0) {
            reportLog.getErrors().add(resterms.getString("The_OID_of_the_Target_Study_that_you_provided_is_invalid"));
            helperObject.setReportLog(reportLog);
            return new ResponseEntity<HelperObject>(helperObject, org.springframework.http.HttpStatus.NOT_ACCEPTABLE);
        }
        StudyUserRoleBean suRole = uadao().findRoleByUserNameAndStudyId(userAccountBean.getName(), stBean.getId());
        Role r = suRole.getRole();
        if (suRole == null || !(r.equals(Role.STUDYDIRECTOR) || r.equals(Role.COORDINATOR))) {
            reportLog.getErrors().add(resterms.getString("You_do_not_have_permission_to_perform_CRF_version_migration_in_this_study"));
            helperObject.setReportLog(reportLog);
            return new ResponseEntity<HelperObject>(helperObject, org.springframework.http.HttpStatus.NOT_ACCEPTABLE);
        }
        if (sourceCrfVersionBean == null || targetCrfVersionBean == null) {
            if (sourceCrfVersion.equals("-1") || targetCrfVersion.equals("-1")) {
                reportLog.getErrors().add(resterms.getString("Current_CRF_version_and_New_CRF_version_should_be_selected"));
            } else {
                reportLog.getErrors().add(resterms.getString("The_OID_of_the_CRF_Version_that_you_provided_is_invalid"));
            }
            helperObject.setReportLog(reportLog);
            return new ResponseEntity<HelperObject>(helperObject, org.springframework.http.HttpStatus.NOT_ACCEPTABLE);
        }
        if (sourceCrfVersionBean.getId() == targetCrfVersionBean.getId()) {
            reportLog.getErrors().add(resterms.getString("Current_CRF_version_and_New_CRF_version_can_not_be_same"));
            helperObject.setReportLog(reportLog);
            return new ResponseEntity<HelperObject>(helperObject, org.springframework.http.HttpStatus.NOT_ACCEPTABLE);
        }
		if (sourceCrfVersionBean.getCrfId() != targetCrfVersionBean.getCrfId() || !sourceCrfVersionBean.getStatus().isAvailable() || !targetCrfVersionBean.getStatus().isAvailable()) {
            reportLog.getErrors().add(resterms.getString("The_OID_of_the_CRF_Version_that_you_provided_is_invalid"));
            helperObject.setReportLog(reportLog);
            return new ResponseEntity<HelperObject>(helperObject, org.springframework.http.HttpStatus.NOT_ACCEPTABLE);
        }

        CRFBean cBean = (CRFBean) cdao().findByPK(sourceCrfVersionBean.getCrfId());

        if (sitelist.size() == 0) {
            ArrayList<StudyBean> listOfSites = (ArrayList<StudyBean>) sdao().findAllByParent(stBean.getId());
            sitelist.add(stBean.getOid());
            for (StudyBean s : listOfSites) {
                if (s.getStatus().isAvailable()) {
                    sitelist.add(s.getOid());
                }
            }
        } else {
            for (String site : sitelist) {
                StudyBean siteBean = sdao().findByOid(site.trim());
                if (siteBean == null || getParentStudy(siteBean).getId() != stBean.getId()) {
                    reportLog.getErrors().add(resterms.getString("The_OID_of_the_Site_that_you_provided_is_invalid"));
                    helperObject.setReportLog(reportLog);
                    return new ResponseEntity<HelperObject>(helperObject, org.springframework.http.HttpStatus.NOT_ACCEPTABLE);
                } else if (siteBean.getStatus().isAvailable()) {
                    sitelistFiltered.add(site);
                }
            }
            sitelist = sitelistFiltered;
        }

        if (studyEventDefnlist.size() == 0) {
            ArrayList<StudyEventDefinitionBean> listOfDefn = seddao().findAllByStudy(stBean);
            for (StudyEventDefinitionBean d : listOfDefn) {
                if (d.getStatus().isAvailable()) {
                    studyEventDefnlist.add(d.getOid());
                }
            }
        } else {
            for (String studyEventDefn : studyEventDefnlist) {
                StudyEventDefinitionBean sedefnBean = seddao().findByOid(studyEventDefn);
                if (sedefnBean == null || sedefnBean.getStudyId() != stBean.getId()) {
                    reportLog.getErrors().add(resterms.getString("The_OID_of_the_Event_that_you_provided_is_invalid"));
                    helperObject.setReportLog(reportLog);
                    return new ResponseEntity<HelperObject>(helperObject, org.springframework.http.HttpStatus.NOT_ACCEPTABLE);
                } else if (sedefnBean.getStatus().isAvailable()) {
                    studyEventDefnlistFiltered.add(studyEventDefn);
                }
            }
            studyEventDefnlist = studyEventDefnlistFiltered;

        }

        int eventCrfCount = ssdao().getTotalEventCrfCountForCrfMigration(sourceCrfVersionBean, targetCrfVersionBean, studyEventDefnlist, sitelist);
        reportLog.setEventCrfCount(eventCrfCount);

        int subjectCount = ssdao().getTotalCountStudySubjectForCrfMigration(sourceCrfVersionBean, targetCrfVersionBean, studyEventDefnlist, sitelist);
        reportLog.setSubjectCount(subjectCount);

        List<EventDefinitionCRFBean> crfMigrationDoesNotPerformList = edcdao().findAllCrfMigrationDoesNotPerform(sourceCrfVersionBean, targetCrfVersionBean,
                studyEventDefnlist, sitelist);
        for (EventDefinitionCRFBean crfMigrationDoesNotPerform : crfMigrationDoesNotPerformList) {
            StudyEventDefinitionBean seddBean = (StudyEventDefinitionBean) seddao().findByPK(crfMigrationDoesNotPerform.getStudyEventDefinitionId());
            StudyBean sssBean = (StudyBean) sdao().findByPK(crfMigrationDoesNotPerform.getStudyId());
            reportLog.getCanNotMigrate().add(
                    resterms.getString("CRF_Version_Migration_cannot_be_performed_for") + " " + sssBean.getName() + " " + seddBean.getName() + ". "
                            + resterms.getString("Both_CRF_versions_are_not_available_at_the_Site"));
        }

        List<EventCRFBean> eventCrfListToMigrate = ecdao().findAllCRFMigrationReportList(sourceCrfVersionBean, targetCrfVersionBean, studyEventDefnlist,
                sitelist);

        helperObject.setReportLog(reportLog);
        helperObject.setStBean(stBean);
        helperObject.setcBean(cBean);
        helperObject.setEventCrfListToMigrate(eventCrfListToMigrate);
        helperObject.setSourceCrfVersionBean(sourceCrfVersionBean);
        helperObject.setTargetCrfVersionBean(targetCrfVersionBean);
        helperObject.setUserAccountBean(userAccountBean);

        return new ResponseEntity<HelperObject>(helperObject, org.springframework.http.HttpStatus.OK);

    }

    private StudyBean getParentStudy(StudyBean study) {
        if (study.getParentStudyId() == 0) {
            return study;
        } else {
            StudyBean parentStudy = (StudyBean) sdao().findByPK(study.getParentStudyId());
            return parentStudy;
        }
    }

    @SuppressWarnings("rawtypes")
    private StudyDAO sdao() {
        return new StudyDAO(dataSource);
    }

    @SuppressWarnings("rawtypes")
    private EventCRFDAO ecdao() {
        return new EventCRFDAO(dataSource);
    }

    private StudyEventDAO sedao() {
        return new StudyEventDAO(dataSource);
    }

    @SuppressWarnings("rawtypes")
    private StudyEventDefinitionDAO seddao() {
        return new StudyEventDefinitionDAO(dataSource);
    }

    @SuppressWarnings("rawtypes")
    private StudySubjectDAO ssdao() {
        return new StudySubjectDAO(dataSource);
    }

    private EventDefinitionCRFDAO edcdao() {
        return new EventDefinitionCRFDAO(dataSource);
    }

    private UserAccountDAO uadao() {
        return new UserAccountDAO(dataSource);
    }

    @SuppressWarnings("rawtypes")
    private CRFDAO cdao() {
        return new CRFDAO(dataSource);
    }

    @SuppressWarnings("rawtypes")
    private CRFVersionDAO cvdao() {
        return new CRFVersionDAO(dataSource);
    }

    private AuditDAO auditDao() {
        return new AuditDAO(dataSource);
    }

    private UserAccountBean getCurrentUser(HttpServletRequest request) {
        UserAccountBean ub = (UserAccountBean) request.getSession().getAttribute("userBean");
        return ub;
    }

    private File createLogFile(String fileName) {
        new File(getFilePath()).mkdir();
        String logFileName = getFilePath() + File.separator + fileName;
        File logFile = new File(logFileName);
        return logFile;
    }

    private String getFilePath() {
        String versionMigrationFilePath = CoreResources.getField("filePath") + "crf_version_migration_batch_log_file";
        return versionMigrationFilePath;
    }

    private PrintWriter openFile(File file) throws FileNotFoundException, UnsupportedEncodingException {
        PrintWriter writer = new PrintWriter(file.getPath(), "UTF-8");
        return writer;
    }

    private void closeFile(PrintWriter writer) {
        writer.close();
    }

    private String getReportUrl(String filename, String urlBase) {
        String reportUrl = urlBase + "/pages/forms/migrate/" + filename + "/downloadLogFile";
        return reportUrl;
    }

    public TransferObject getUIComponents(HttpServletRequest request) {

        String selectedSites = request.getParameter("selectedSites");
        String selectedEvents = request.getParameter("selectedEvents");

        List<String> selectedSiteList = Arrays.asList(selectedSites.split(","));
        List<String> selectedEventList = Arrays.asList(selectedEvents.split(","));
        ArrayList<String> selectedSiteArrayList = new ArrayList<String>(selectedSiteList);
        ArrayList<String> selectedEventArrayList = new ArrayList<String>(selectedEventList);

        if (selectedSiteArrayList.contains("-1"))
            selectedSiteArrayList.clear();
        if (selectedEventArrayList.contains("-1"))
            selectedEventArrayList.clear();

        TransferObject transferObject = new TransferObject();
        transferObject.setSites(selectedSiteArrayList);
        transferObject.setStudyEventDefs(selectedEventArrayList);
        transferObject.setSourceFormVersion(request.getParameter("selectedSourceVersion"));
        transferObject.setTargetFormVersion(request.getParameter("selectedTargetVersion"));
        transferObject.setStudyOID(request.getParameter("studyOid"));

        return transferObject;
    }

    public String toStringTextFormat(ReportLog reportLog, ResourceBundle resterms, StudyBean stBean, CRFBean cBean) {

        StringBuffer text1 = new StringBuffer();
        for (String migrationPerform : reportLog.getCanNotMigrate()) {
            text1.append(migrationPerform.toString()).append('\n');
        }
        StringBuffer text2 = new StringBuffer();
        for (String error : reportLog.getErrors()) {
            text2.append(error.toString()).append('\n');
        }

        StringBuffer text3 = new StringBuffer();
        for (String log : reportLog.getLogs()) {
            text3.append(log.toString()).append('\n');
        }
        StringBuilder sb = new StringBuilder();
        sb.append(resterms.getString("Study") + ": " + stBean.getName() + "\n");
        sb.append(resterms.getString("CRF") + ": " + cBean.getName() + "\n\n");
        sb.append(resterms.getString("Migration_Summary") + ":\n" + resterms.getString("Number_of_Subjects_affected_by_migration") + ": "
                + reportLog.getSubjectCount() + "\n");
        sb.append(resterms.getString("Number_of_Event_CRF_affected_by_migration") + ": " + reportLog.getEventCrfCount() + "\n");
        sb.append(text1.toString() + "\n");

        if (reportLog.getErrors().size() != 0) {
            sb.append(resterms.getString("Errors") + ":\n" + text2.toString() + "\n");
        }
        sb.append(resterms.getString("Report_Log") + ":\n"
                + resterms.getString("CRF_Name__Origin_Version__Target_Version__Subject_ID__Site__Event__Event_Ordinal") + "\n" + text3.toString());
        return sb.toString();
    }

    public String toStringHtmlFormat(ReportLog reportLog, ResourceBundle resterms) {

        StringBuffer text1 = new StringBuffer();
        for (String migrationPerform : reportLog.getCanNotMigrate()) {
            text1.append(migrationPerform.toString()).append("<br>");
        }
        StringBuffer text2 = new StringBuffer();
        for (String error : reportLog.getErrors()) {
            text2.append(error.toString()).append("<br>");
        }

        StringBuffer text3 = new StringBuffer();
        for (String log : reportLog.getLogs()) {
            text3.append(log.toString()).append("<br>");
        }
        StringBuilder sb = new StringBuilder();

        sb.append("<br>");
        if (reportLog.getErrors().size() == 0) {
            sb.append("<font size=\"3\" color=\"#D4A718\"><b>");
            sb.append(resterms.getString("Migration_Summary") + ":");
            sb.append("</b></font>");
            sb.append("<br>");
            sb.append("<br>");

            sb.append(resterms.getString("Number_of_Subjects_to_be_affected_by_migration") + ": " + reportLog.getSubjectCount() + "<br>");
            sb.append(resterms.getString("Number_of_Event_CRF_to_be_affected_by_migration") + ": " + reportLog.getEventCrfCount() + "<br>");
            sb.append("<br>");
            sb.append(text1.toString() + "<br>");
        }

        if (reportLog.getErrors().size() != 0) {
            sb.append("<font size=\"3\" color=\"#D4A718\" ><b>");
            sb.append(resterms.getString("Errors") + ":");
            sb.append("</b></font>");
            sb.append("<br>");

            sb.append("<font color=\"red\"><b>");
            sb.append(text2.toString());
            sb.append("</b></font>");
            sb.append("<br>");
        }

        return sb.toString();
    }

    private Object redirect(HttpServletRequest request, HttpServletResponse response, String location) {
        try {
            response.sendRedirect(request.getContextPath() + location);
        } catch (Exception e) {
            logger.debug(e.getStackTrace().toString());
        } finally {

        }

        return null;

    }

    @Override
    public void run() {
        dataSource = helperObject.getDataSource();
        cBean = helperObject.getcBean();
        reportLog = helperObject.getReportLog();
        stBean = helperObject.getStBean();
        resterms = helperObject.getResterms();
        userAccountBean = helperObject.getUserAccountBean();
        openClinicaMailSender = helperObject.getOpenClinicaMailSender();
        sessionFactory = helperObject.getSessionFactory();

        Session session = sessionFactory.openSession();
        Transaction tx = session.beginTransaction();
        helperObject.setSession(session);
        int i = 0;
        for (EventCRFBean eventCrfToMigrate : helperObject.getEventCrfListToMigrate()) {
            i++;
            executeMigrationAction(helperObject, eventCrfToMigrate);

            if (i % 50 == 0) {
                session.flush();
                session.clear();
            }

            StudySubjectBean ssBean = (StudySubjectBean) ssdao().findByPK(eventCrfToMigrate.getStudySubjectId());
            StudyBean sBean = (StudyBean) sdao().findByPK(ssBean.getStudyId());
            StudyEventBean seBean = (StudyEventBean) sedao().findByPK(eventCrfToMigrate.getStudyEventId());
            StudyEventDefinitionBean sedBean = (StudyEventDefinitionBean) seddao().findByPK(seBean.getStudyEventDefinitionId());
            reportLog.getLogs().add(
                    cBean.getName() + "," + helperObject.getSourceCrfVersionBean().getName() + "," + helperObject.getTargetCrfVersionBean().getName() + ","
                            + ssBean.getLabel() + ","
                            + sBean.getName() + "," + sedBean.getName() + "," + seBean.getSampleOrdinal());
        }
        tx.commit();
        session.close();

        String fileName = new SimpleDateFormat("_yyyy-MM-dd-hhmmssSaa'.txt'").format(new Date());
        fileName = "logFile" + fileName;
        File file = createLogFile(fileName);
        PrintWriter writer = null;
        try {
            writer = openFile(file);
        } catch (FileNotFoundException | UnsupportedEncodingException e) {
            e.printStackTrace();
        } finally {
            writer.print(toStringTextFormat(reportLog, resterms, stBean, cBean));
            closeFile(writer);
        }
        String reportUrl = getReportUrl(fileName, helperObject.getUrlBase());
        String fullName = userAccountBean.getFirstName() + " " + userAccountBean.getLastName();
        StringBuilder body = new StringBuilder();
        body.append(resterms.getString("Dear") + " " + fullName + ",<br><br>" + resterms.getString("Batch_CRF_version_migration_has_finished_running") + "<br>"
                + resterms.getString("Study") + ": " + stBean.getName() + "<br>" + resterms.getString("CRF") + ": " + cBean.getName() + "<br><br>"
                + resterms.getString("A_summary_report_of_the_migration_is_available_here") + ":<br>" + reportUrl + "<br><br>"
                + resterms.getString("Thank_you_Your_OpenClinica_System"));

        logger.info(body.toString());
        openClinicaMailSender.sendEmail(userAccountBean.getEmail(), EmailEngine.getAdminEmail(), resterms.getString("Batch_Migration_Complete_For") + " "
                + stBean.getName(), body.toString(), true);
    }

    public void fillHelperObject(HelperObject helperObject) {
       helperObject.setUrlBase(CoreResources.getField("sysURL").split("/MainMenu")[0]);
       helperObject.setOpenClinicaMailSender(openClinicaMailSender);
       helperObject.setDataSource(dataSource);
       helperObject.setResterms(resterms);
       helperObject.setEventCrfDao(eventCrfDao);
       helperObject.setStudyEventDao(studyEventDao);
       helperObject.setStudySubjectDao(studySubjectDao);
       helperObject.setCrfVersionDao(crfVersionDao);
       helperObject.setSessionFactory(sessionFactory);
   }
}

## 内容4
### 文件路径：
web/src/main/java/org/akaza/openclinica/controller/openrosa/OpenRosaSubmissionController.java
### 代码内容：
package org.akaza.openclinica.controller.openrosa;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.akaza.openclinica.bean.core.Status;
import org.akaza.openclinica.bean.managestudy.StudySubjectBean;
import org.akaza.openclinica.bean.rule.FileProperties;
import org.akaza.openclinica.control.submit.UploadFileServlet;
import org.akaza.openclinica.dao.core.CoreResources;
import org.akaza.openclinica.dao.hibernate.StudyDao;
import org.akaza.openclinica.dao.hibernate.StudyParameterValueDao;
import org.akaza.openclinica.domain.datamap.Study;
import org.akaza.openclinica.domain.datamap.StudyParameterValue;
import org.akaza.openclinica.exception.OpenClinicaSystemException;
import org.akaza.openclinica.i18n.core.LocaleResolver;
import org.akaza.openclinica.service.pmanage.ParticipantPortalRegistrar;
import org.akaza.openclinica.web.pform.PFormCache;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.io.FilenameUtils;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.exception.ExceptionUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.validation.DataBinder;
import org.springframework.validation.Errors;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

@Controller
@RequestMapping(value = "/openrosa")
public class OpenRosaSubmissionController {

    @Autowired
    ServletContext context;

    @Autowired
    private OpenRosaSubmissionService openRosaSubmissionService;

    @Autowired
    private StudyDao studyDao;

    @Autowired
    private StudyParameterValueDao studyParameterValueDao;

    @Autowired
    PformSubmissionNotificationService notifier;

    protected final Logger logger = LoggerFactory.getLogger(getClass().getName());
    public static final String FORM_CONTEXT = "ecid";

    /**
     * @api {post} /pages/api/v1/editform/:studyOid/submission Submit form data
     * @apiName doSubmission
     * @apiPermission admin
     * @apiVersion 3.8.0
     * @apiParam {String} studyOid Study Oid.
     * @apiParam {String} ecid Key that will be used to look up subject context information while processing submission.
     * @apiGroup Form
     * @apiDescription Submits the data from a completed form.
     */

    @RequestMapping(value = "/{studyOID}/submission", method = RequestMethod.POST)
    public ResponseEntity<String> doSubmission(HttpServletRequest request, HttpServletResponse response,
            @PathVariable("studyOID") String studyOID, @RequestParam(FORM_CONTEXT) String ecid) {

        logger.info("Processing xform submission.");
        HashMap<String, String> subjectContext = null;
        Locale locale = LocaleResolver.getLocale(request);

        DataBinder dataBinder = new DataBinder(null);
        Errors errors = dataBinder.getBindingResult();
        Study study = studyDao.findByOcOID(studyOID);
        String requestBody=null;

        HashMap<String,String> map = new HashMap();
        ArrayList <HashMap> listOfUploadFilePaths = new ArrayList();

        try {
            // Verify Study is allowed to submit
            if (!mayProceed(studyOID)) {
                logger.info("Submissions to the study not allowed.  Aborting submission.");
                return new ResponseEntity<String>(org.springframework.http.HttpStatus.NOT_ACCEPTABLE);
            }
            if (ServletFileUpload.isMultipartContent(request)) {
                String dir = getAttachedFilePath(studyOID);
                FileProperties fileProperties= new FileProperties();
                DiskFileItemFactory factory = new DiskFileItemFactory();
                ServletFileUpload upload = new ServletFileUpload(factory);
                upload.setFileSizeMax(fileProperties.getFileSizeMax());
                List<FileItem> items = upload.parseRequest(request);
                for (FileItem item : items) {
                    if (item.getContentType() != null && !item.getFieldName().equals("xml_submission_file") ) {
                        if (!new File(dir).exists()) new File(dir).mkdirs();

                        File file = processUploadedFile(item, dir);
                        map.put(item.getFieldName(), file.getPath());

                    } else if (item.getFieldName().equals("xml_submission_file")) {
                        requestBody = item.getString("UTF-8");
                    }
                }
                listOfUploadFilePaths.add(map);
            } else  {
                requestBody = IOUtils.toString(request.getInputStream(), "UTF-8");
            }

            // Load user context from ecid
            PFormCache cache = PFormCache.getInstance(context);
            subjectContext = cache.getSubjectContext(ecid);

            // Execute save as Hibernate transaction to avoid partial imports
            openRosaSubmissionService.processRequest(study, subjectContext, requestBody, errors, locale , listOfUploadFilePaths);

        } catch (Exception e) {
            logger.error("Exception while processing xform submission.");
            logger.error(e.getMessage());
            logger.error(ExceptionUtils.getStackTrace(e));

            if (!errors.hasErrors()) {
                // Send a failure response
                logger.info("Submission caused internal error.  Sending error response.");
                return new ResponseEntity<String>(org.springframework.http.HttpStatus.INTERNAL_SERVER_ERROR);
            }
        }

        if (!errors.hasErrors()) {
            // Log submission with Participate
            notifier.notify(studyOID, subjectContext);
            logger.info("Completed xform submission. Sending successful response");
            String responseMessage = "<OpenRosaResponse xmlns=\"http://openrosa.org/http/response\">" + "<message>success</message>" + "</OpenRosaResponse>";
            return new ResponseEntity<String>(responseMessage, org.springframework.http.HttpStatus.CREATED);
        } else {
            logger.info("Submission contained errors. Sending error response");
            return new ResponseEntity<String>(org.springframework.http.HttpStatus.NOT_ACCEPTABLE);
        }
    }

    private Study getParentStudy(String studyOid) {
        Study study = studyDao.findByOcOID(studyOid);
        Study parentStudy = study.getStudy();
        if (parentStudy != null && parentStudy.getStudyId() > 0)
            return parentStudy;
        else
            return study;
    }

    private boolean mayProceed(String studyOid) throws Exception {
        return mayProceed(studyOid, null);
    }

    private boolean mayProceed(String studyOid, StudySubjectBean ssBean) throws Exception {
        boolean accessPermission = false;
        ParticipantPortalRegistrar participantPortalRegistrar= new ParticipantPortalRegistrar();
        Study study = getParentStudy(studyOid);
        StudyParameterValue pStatus = studyParameterValueDao.findByStudyIdParameter(study.getStudyId(), "participantPortal");

        // ACTIVE, PENDING, or INACTIVE
        String pManageStatus = participantPortalRegistrar.getRegistrationStatus(studyOid).toString();

        // enabled or disabled
        String participateStatus = pStatus.getValue().toString();

        // available, pending, frozen, or locked
        String studyStatus = study.getStatus().getName().toString();

        if (ssBean == null) {
            logger.info("pManageStatus: " + pManageStatus + "  participantStatus: " + participateStatus + "   studyStatus: " + studyStatus);
            if (participateStatus.equalsIgnoreCase("enabled") && studyStatus.equalsIgnoreCase("available") && pManageStatus.equalsIgnoreCase("ACTIVE"))
                accessPermission = true;
        } else {
            logger.info("pManageStatus: " + pManageStatus + "  participantStatus: " + participateStatus + "   studyStatus: " + studyStatus
                    + "  studySubjectStatus: " + ssBean.getStatus().getName());
            if (participateStatus.equalsIgnoreCase("enabled") && studyStatus.equalsIgnoreCase("available") && pManageStatus.equalsIgnoreCase("ACTIVE")
                    && ssBean.getStatus() == Status.AVAILABLE)
                accessPermission = true;
        }
        return accessPermission;
    }

    public static String getAttachedFilePath(String inputStudyOid) {
    	// Using a standard library to validate/Sanitize user inputs which will be used in path expression to prevent from path traversal
    	String studyOid =  FilenameUtils.getName(inputStudyOid);
        String attachedFilePath = CoreResources.getField("attached_file_location");
        if (attachedFilePath == null || attachedFilePath.length() <= 0) {
            attachedFilePath = CoreResources.getField("filePath") + "attached_files" + File.separator + studyOid + File.separator;
        } else {
            attachedFilePath += studyOid + File.separator;
        }
        return attachedFilePath;
    }

    private File processUploadedFile(FileItem item, String dirToSaveUploadedFileIn) {
        dirToSaveUploadedFileIn = dirToSaveUploadedFileIn == null ? System.getProperty("java.io.tmpdir") : dirToSaveUploadedFileIn;
        String fileName = item.getName();
        // Some browsers IE 6,7 getName returns the whole path
        int startIndex = fileName.lastIndexOf('\\');
        if (startIndex != -1) {
            fileName = fileName.substring(startIndex + 1, fileName.length());
        }

        File uploadedFile = new File(dirToSaveUploadedFileIn + File.separator + fileName);
        try {
            uploadedFile = new UploadFileServlet().new OCFileRename().rename(uploadedFile, item.getInputStream());
        } catch (IOException e) {
            throw new OpenClinicaSystemException(e.getMessage());
        }

        try {
            item.write(uploadedFile);
        } catch (Exception e) {
            throw new OpenClinicaSystemException(e.getMessage());
        }
        return uploadedFile;
    }
}

Output:
【漏洞类型】路径遍历漏洞
【严重性】High
【漏洞摘要】此类路径遍历漏洞允许攻击者通过精心构造的文件名参数来访问或操纵服务器上的文件。具体表现如下：
- 在 `DownloadVersionSpreadSheetServlet` 中，未验证用户输入的 `crfIdString` 和 `version.getOid()`，直接拼接成文件名，存在路径遍历风险。
- 在 `DownloadAttachedFileServlet` 中，尽管检查了 `fileName.indexOf("..") > -1`，但仍允许通过相对路径访问任意文件，存在路径遍历风险。
- 在 `BatchCRFMigrationController` 中，未验证用户输入的 `fileName`，直接拼接成文件路径，存在路径遍历风险。
- 在 `OpenRosaSubmissionController` 中，尽管使用了 `FilenameUtils.getName`，但未验证路径的合法性，存在路径遍历风险。

【关键代码模式】
- `new File(dir, excelFileName)`
- `new File(logFilePath, fileName)`
- `new File(testName)`
- `new File(fileToDownload)`
- `FilenameUtils.getName`
- `dirToSaveUploadedFileIn`

【修复方法说明】
通过获取文件的规范路径（`getCanonicalPath()`），并检查其是否以预期的目录路径开头，修复了路径遍历漏洞。这种方法确保了文件路径在服务器上的安全性。


Instruction:
作为 Java 安全专家，检测此代码中的安全漏洞：
## 内容1
### 文件路径：
imageio/imageio-metadata/src/main/java/com/twelvemonkeys/imageio/metadata/xmp/XMPReader.java
### 代码内容：
package com.twelvemonkeys.imageio.metadata.xmp;

import com.twelvemonkeys.imageio.metadata.Directory;
import com.twelvemonkeys.imageio.metadata.Entry;
import com.twelvemonkeys.imageio.metadata.MetadataReader;
import com.twelvemonkeys.imageio.util.IIOUtil;
import com.twelvemonkeys.lang.Validate;
import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

import javax.imageio.IIOException;
import javax.imageio.stream.ImageInputStream;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import java.io.IOException;
import java.util.*;

/**
 * XMPReader
 *
 * @author Harald Kuhr
 * @author last modified by $Author: haraldk$
 * @version $Id: XMPReader.java,v 1.0 Nov 14, 2009 11:04:30 PM haraldk Exp$
 */
public final class XMPReader extends MetadataReader {
    // See http://www.scribd.com/doc/56852716/XMPSpecificationPart1

    // TODO: Types? Probably defined in XMP/RDF XML schema. Or are we happy that everything is a string?

    @Override
    public Directory read(final ImageInputStream input) throws IOException {
        Validate.notNull(input, "input");

        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        factory.setNamespaceAware(true);

        try {
            // TODO: Consider parsing using SAX?
            // TODO: Determine encoding and parse using a Reader...
            // TODO: Refactor scanner to return inputstream?
            // TODO: Be smarter about ASCII-NULL termination/padding (the SAXParser aka Xerces DOMParser doesn't like it)...
            DocumentBuilder builder = factory.newDocumentBuilder();
            builder.setErrorHandler(new DefaultHandler());
            Document document = builder.parse(new InputSource(IIOUtil.createStreamAdapter(input)));

//            XMLSerializer serializer = new XMLSerializer(System.err, System.getProperty("file.encoding"));
//            serializer.serialize(document);

            String toolkit = getToolkit(document);
            Node rdfRoot = document.getElementsByTagNameNS(XMP.NS_RDF, "RDF").item(0);
            NodeList descriptions = document.getElementsByTagNameNS(XMP.NS_RDF, "Description");

            return parseDirectories(rdfRoot, descriptions, toolkit);
        }
        catch (SAXException e) {
            throw new IIOException(e.getMessage(), e);
        }
        catch (ParserConfigurationException e) {
            throw new RuntimeException(e); // TODO: Or IOException?
        }
    }

    private String getToolkit(Document document) {
        NodeList xmpmeta = document.getElementsByTagNameNS(XMP.NS_X, "xmpmeta");

        if (xmpmeta == null || xmpmeta.getLength() <= 0) {
            return null;
        }

        Node toolkit = xmpmeta.item(0).getAttributes().getNamedItemNS(XMP.NS_X, "xmptk");

        return toolkit != null ? toolkit.getNodeValue() : null;
    }

    private XMPDirectory parseDirectories(final Node pParentNode, NodeList pNodes, String toolkit) {
        Map<String, List<Entry>> subdirs = new LinkedHashMap<String, List<Entry>>();

        for (Node desc : asIterable(pNodes)) {
            if (desc.getParentNode() != pParentNode) {
                continue;
            }

            // Support attribute short-hand syntax
            parseAttributesForKnownElements(subdirs, desc);

            for (Node node : asIterable(desc.getChildNodes())) {
                if (node.getNodeType() != Node.ELEMENT_NODE) {
                    continue;
                }

                // Lookup
                List<Entry> dir = subdirs.get(node.getNamespaceURI());
                if (dir == null) {
                    dir = new ArrayList<Entry>();
                    subdirs.put(node.getNamespaceURI(), dir);
                }

                Object value;

                if (isResourceType(node)) {
                    value = parseAsResource(node);
                }
                else {
                    // TODO: This method contains loads of duplication an should be cleaned up...
                    // Support attribute short-hand syntax
                    Map<String, List<Entry>> subsubdirs = new LinkedHashMap<String, List<Entry>>();

                    parseAttributesForKnownElements(subsubdirs, node);

                    if (!subsubdirs.isEmpty()) {
                        List<Entry> entries = new ArrayList<>(subsubdirs.size());

                        for (Map.Entry<String, List<Entry>> entry : subsubdirs.entrySet()) {
                            entries.addAll(entry.getValue());
                        }

                        value = new RDFDescription(entries);
                    }
                    else {
                        value = getChildTextValue(node);
                    }
                }

                dir.add(new XMPEntry(node.getNamespaceURI() + node.getLocalName(), node.getLocalName(), value));
            }
        }

        List<Directory> entries = new ArrayList<Directory>(subdirs.size());

        // TODO: Should we still allow asking for a subdirectory by item id?
        for (Map.Entry<String, List<Entry>> entry : subdirs.entrySet()) {
            entries.add(new RDFDescription(entry.getKey(), entry.getValue()));
        }

        return new XMPDirectory(entries, toolkit);
    }

    private boolean isResourceType(Node node) {
        Node parseType = node.getAttributes().getNamedItemNS(XMP.NS_RDF, "parseType");

        return parseType != null && "Resource".equals(parseType.getNodeValue());
    }

    private RDFDescription parseAsResource(Node node) {
        // See: http://www.w3.org/TR/REC-rdf-syntax/#section-Syntax-parsetype-resource
        List<Entry> entries = new ArrayList<Entry>();

        for (Node child : asIterable(node.getChildNodes())) {
            if (child.getNodeType() != Node.ELEMENT_NODE) {
                continue;
            }

            entries.add(new XMPEntry(child.getNamespaceURI() + child.getLocalName(), child.getLocalName(), getChildTextValue(child)));
        }

        return new RDFDescription(entries);
    }

    private void parseAttributesForKnownElements(Map<String, List<Entry>> subdirs, Node desc) {
        // NOTE: NamedNodeMap does not have any particular order...
        NamedNodeMap attributes = desc.getAttributes();

        for (Node attr : asIterable(attributes)) {
            if (!XMP.ELEMENTS.contains(attr.getNamespaceURI())) {
                continue;
            }

            List<Entry> dir = subdirs.get(attr.getNamespaceURI());

            if (dir == null) {
                dir = new ArrayList<Entry>();
                subdirs.put(attr.getNamespaceURI(), dir);
            }

            dir.add(new XMPEntry(attr.getNamespaceURI() + attr.getLocalName(), attr.getLocalName(), attr.getNodeValue()));
        }
    }

    private Object getChildTextValue(final Node node) {
        for (Node child : asIterable(node.getChildNodes())) {
            if (XMP.NS_RDF.equals(child.getNamespaceURI()) && "Alt".equals(child.getLocalName())) {
                // Support for <rdf:Alt><rdf:li> -> return a Map<String, Object> keyed on xml:lang
                Map<String, Object> alternatives = new LinkedHashMap<String, Object>();
                for (Node alternative : asIterable(child.getChildNodes())) {
                    if (XMP.NS_RDF.equals(alternative.getNamespaceURI()) && "li".equals(alternative.getLocalName())) {
                        NamedNodeMap attributes = alternative.getAttributes();
                        Node key = attributes.getNamedItem("xml:lang");
                        alternatives.put(key == null ? null : key.getTextContent(), getChildTextValue(alternative));
                    }
                }

                return alternatives;
            }
            else if (XMP.NS_RDF.equals(child.getNamespaceURI()) && ("Seq".equals(child.getLocalName()) || "Bag".equals(child.getLocalName()))) {
                // Support for <rdf:Seq><rdf:li> -> return array
                // Support for <rdf:Bag><rdf:li> -> return array/unordered collection (how can a serialized collection not have order?)
                List<Object> seq = new ArrayList<Object>();

                for (Node sequence : asIterable(child.getChildNodes())) {
                    if (XMP.NS_RDF.equals(sequence.getNamespaceURI()) && "li".equals(sequence.getLocalName())) {
                        Object value = getChildTextValue(sequence);
                        seq.add(value);
                    }
                }

                // TODO: Strictly a bag should not be a list, but there's no Bag type (or similar) in Java.
                // Consider something like Google collections Multiset or Apache commons Bag (the former seems more well-defined)
                // Note: Collection does not have defined equals() semantics, and so using
                // Collections.unmodifiableCollection() doesn't work for comparing values (uses Object.equals())
                return Collections.unmodifiableList(seq);
            }
        }

        // Need to support rdf:parseType="Resource" here as well...
        if (isResourceType(node)) {
            return parseAsResource(node);
        }

        Node child = node.getFirstChild();
        String strVal = child != null ? child.getNodeValue() : null;
        return strVal != null ? strVal.trim() : "";
    }

    private Iterable<? extends Node> asIterable(final NamedNodeMap pNodeList) {
        return new Iterable<Node>() {
            public Iterator<Node> iterator() {
                return new Iterator<Node>() {
                    private int index;

                    public boolean hasNext() {
                        return pNodeList != null && pNodeList.getLength() > index;
                    }

                    public Node next() {
                        return pNodeList.item(index++);
                    }

                    public void remove() {
                        throw new UnsupportedOperationException("Method remove not supported");
                    }
                };
            }
        };
    }

    private Iterable<? extends Node> asIterable(final NodeList pNodeList) {
        return new Iterable<Node>() {
            public Iterator<Node> iterator() {
                return new Iterator<Node>() {
                    private int index;

                    public boolean hasNext() {
                        return pNodeList != null && pNodeList.getLength() > index;
                    }

                    public Node next() {
                        return pNodeList.item(index++);
                    }

                    public void remove() {
                        throw new UnsupportedOperationException("Method remove not supported");
                    }
                };
            }
        };
    }
}

Output:
【漏洞类型】XML外部实体（XXE）攻击
【严重性】High
【漏洞摘要】此代码存在XML外部实体（XXE）攻击漏洞。`DocumentBuilderFactory`实例未禁用外部实体引用，这意味着攻击者可以通过构造恶意的XML输入来利用XXE攻击，导致拒绝服务（DoS）攻击或信息泄露。
【关键代码模式】`DocumentBuilderFactory`实例的创建和使用。
【修复方法说明】修复方法通过创建一个新的`createDocumentBuilderFactory`方法，在其中禁用外部实体引用和XInclude功能。同时，启用了“安全处理”特性，以防止DoS攻击。