让你的FCKediror支持Struts2
最近有个项目改版，然后我尝试着用SS2H来进行架构，因为以前一直喜欢WW，所以一直想还是跟着潮流走吧，反正Struts2就是WW，接着就动手改版！
当有个同事说“锋哥，FCKeditor编辑器上传图片报错，说找不到NewFile”。
我说“怎么可能，FCKeditor一直好的！”。
然后我就自己测试研究了一下！还真那么回事，然后我想了很多方式去测试。
最后在DEBUG模式里发现了，S2文件上传的拦截器拦截了commons-fileupload上传的文件。所以在FCKeditor的com.fredck.FCKeditor.uploader.SimpleUploaderServlet这个类找不到NewFile。
想了很久，决定去找一下FCKeditor的源码，在官网找到最后是3.X的吧，然后就把SimpleUploaderServlet这个类好好的读了一遍，着手重写，让它支持S2，整个过程只要修改文件上传拦截获取方式就可以，我也根据项目要求加了一些项目需要的文件目录和文件命名等。
先贴一下修改前源码：
修改后的源码：
最后进行测试通过，我这里只是改了其中一个上传类，我把FCKeditor简化了！只有用到了图片上传。
如果你想转变一下上传方式，不用S2的话，只要在doPost改一下上传类。
希望对在用FCKeditor，Struts2的朋友有所帮助。
还好整个工程不大，不到1M。
附件提供了，Demo并且相应的包。
当有个同事说“锋哥，FCKeditor编辑器上传图片报错，说找不到NewFile”。
我说“怎么可能，FCKeditor一直好的！”。
然后我就自己测试研究了一下！还真那么回事，然后我想了很多方式去测试。
最后在DEBUG模式里发现了，S2文件上传的拦截器拦截了commons-fileupload上传的文件。所以在FCKeditor的com.fredck.FCKeditor.uploader.SimpleUploaderServlet这个类找不到NewFile。
想了很久，决定去找一下FCKeditor的源码，在官网找到最后是3.X的吧，然后就把SimpleUploaderServlet这个类好好的读了一遍，着手重写，让它支持S2，整个过程只要修改文件上传拦截获取方式就可以，我也根据项目要求加了一些项目需要的文件目录和文件命名等。
先贴一下修改前源码：
/* * FCKeditor - The text editor for internet * Copyright (C) 2003-2005 Frederico Caldeira Knabben * * Licensed under the terms of the GNU Lesser General Public License: * http://www.opensource.org/licenses/lgpl-license.php * * For further information visit: * http://www.fckeditor.net/ * * File Name: SimpleUploaderServlet.java * Java File Uploader class. * * Version: 2.3 * Modified: 2005-08-11 16:29:00 * * File Authors: * Simone Chiaretta ([email protected]) */ package com.fredck.FCKeditor.uploader; import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import java.util.*; import org.apache.commons.fileupload.*; /** * Servlet to upload files.<br> * * This servlet accepts just file uploads, eventually with a parameter specifying file type * * @author Simone Chiaretta ([email protected]) */ public class SimpleUploaderServlet extends HttpServlet { private static String baseDir; private static boolean debug=false; private static boolean enabled=false; private static Hashtable allowedExtensions; private static Hashtable deniedExtensions; /** * Initialize the servlet.<br> * Retrieve from the servlet configuration the "baseDir" which is the root of the file repository:<br> * If not specified the value of "/UserFiles/" will be used.<br> * Also it retrieve all allowed and denied extensions to be handled. * */ public void init() throws ServletException { debug=(new Boolean(getInitParameter("debug"))).booleanValue(); if(debug) System.out.println("\r\n---- SimpleUploaderServlet initialization started ----"); baseDir=getInitParameter("baseDir"); enabled=(new Boolean(getInitParameter("enabled"))).booleanValue(); if(baseDir==null) baseDir="/UserFiles/"; String realBaseDir=getServletContext().getRealPath(baseDir); File baseFile=new File(realBaseDir); if(!baseFile.exists()){ baseFile.mkdir(); } allowedExtensions = new Hashtable(3); deniedExtensions = new Hashtable(3); allowedExtensions.put("File",stringToArrayList(getInitParameter("AllowedExtensionsFile"))); deniedExtensions.put("File",stringToArrayList(getInitParameter("DeniedExtensionsFile"))); allowedExtensions.put("Image",stringToArrayList(getInitParameter("AllowedExtensionsImage"))); deniedExtensions.put("Image",stringToArrayList(getInitParameter("DeniedExtensionsImage"))); allowedExtensions.put("Flash",stringToArrayList(getInitParameter("AllowedExtensionsFlash"))); deniedExtensions.put("Flash",stringToArrayList(getInitParameter("DeniedExtensionsFlash"))); if(debug) System.out.println("---- SimpleUploaderServlet initialization completed ----\r\n"); } /** * Manage the Upload requests.<br> * * The servlet accepts commands sent in the following format:<br> * simpleUploader?Type=ResourceType<br><br> * It store the file (renaming it in case a file with the same name exists) and then return an HTML file * with a javascript command in it. * */ public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { if (debug) System.out.println("--- BEGIN DOPOST ---"); response.setContentType("text/html; charset=UTF-8"); response.setHeader("Cache-Control","no-cache"); PrintWriter out = response.getWriter(); String typeStr=request.getParameter("Type"); String currentPath=baseDir+typeStr; String currentDirPath=getServletContext().getRealPath(currentPath); currentPath=request.getContextPath()+currentPath; if (debug) System.out.println(currentDirPath); String retVal="0"; String newName=""; String fileUrl=""; String errorMessage=""; if(enabled) { DiskFileUpload upload = new DiskFileUpload(); try { List items = upload.parseRequest(request); Map fields=new HashMap(); Iterator iter = items.iterator(); while (iter.hasNext()) { FileItem item = (FileItem) iter.next(); if (item.isFormField()) fields.put(item.getFieldName(),item.getString()); else fields.put(item.getFieldName(),item); } FileItem uplFile=(FileItem)fields.get("NewFile"); String fileNameLong=uplFile.getName(); fileNameLong=fileNameLong.replace('\\','/'); String[] pathParts=fileNameLong.split("/"); String fileName=pathParts[pathParts.length-1]; String nameWithoutExt=getNameWithoutExtension(fileName); String ext=getExtension(fileName); File pathToSave=new File(currentDirPath,fileName); fileUrl=currentPath+"/"+fileName; if(extIsAllowed(typeStr,ext)) { int counter=1; while(pathToSave.exists()){ newName=nameWithoutExt+"("+counter+")"+"."+ext; fileUrl=currentPath+"/"+newName; retVal="201"; pathToSave=new File(currentDirPath,newName); counter++; } uplFile.write(pathToSave); } else { retVal="202"; errorMessage=""; if (debug) System.out.println("Invalid file type: " + ext); } }catch (Exception ex) { if (debug) ex.printStackTrace(); retVal="203"; } } else { retVal="1"; errorMessage="This file uploader is disabled. Please check the WEB-INF/web.xml file"; } out.println("<script type=\"text/javascript\">"); out.println("window.parent.OnUploadCompleted("+retVal+",'"+fileUrl+"','"+newName+"','"+errorMessage+"');"); out.println("</script>"); out.flush(); out.close(); if (debug) System.out.println("--- END DOPOST ---"); } /* * This method was fixed after Kris Barnhoorn (kurioskronic) submitted SF bug #991489 */ private static String getNameWithoutExtension(String fileName) { return fileName.substring(0, fileName.lastIndexOf(".")); } /* * This method was fixed after Kris Barnhoorn (kurioskronic) submitted SF bug #991489 */ private String getExtension(String fileName) { return fileName.substring(fileName.lastIndexOf(".")+1); } /** * Helper function to convert the configuration string to an ArrayList. */ private ArrayList stringToArrayList(String str) { if(debug) System.out.println(str); String[] strArr=str.split("\\|"); ArrayList tmp=new ArrayList(); if(str.length()>0) { for(int i=0;i<strArr.length;++i) { if(debug) System.out.println(i +" - "+strArr[i]); tmp.add(strArr[i].toLowerCase()); } } return tmp; } /** * Helper function to verify if a file extension is allowed or not allowed. */ private boolean extIsAllowed(String fileType, String ext) { ext=ext.toLowerCase(); ArrayList allowList=(ArrayList)allowedExtensions.get(fileType); ArrayList denyList=(ArrayList)deniedExtensions.get(fileType); if(allowList.size()==0) if(denyList.contains(ext)) return false; else return true; if(denyList.size()==0) if(allowList.contains(ext)) return true; else return false; return false; } }
修改后的源码：
/* * FCKeditor - The text editor for internet * Copyright (C) 2003-2005 Frederico Caldeira Knabben * * Licensed under the terms of the GNU Lesser General Public License: * http://www.opensource.org/licenses/lgpl-license.php * * For further information visit: * http://www.fckeditor.net/ * * File Name: SimpleUploaderServlet.java * Java File Uploader class. * * Version: 2.3 * Modified: 2005-08-11 16:29:00 * * File Authors: * Simone Chiaretta ([email protected]) */ package com.fredck.FCKeditor.struts2; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.io.PrintWriter; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Arrays; import java.util.Date; import java.util.Enumeration; import java.util.HashMap; import java.util.Hashtable; import java.util.Iterator; import java.util.List; import java.util.Map; import javax.servlet.ServletContext; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import org.apache.commons.fileupload.servlet.ServletRequestContext; import org.apache.struts2.dispatcher.multipart.MultiPartRequestWrapper; /** * Servlet to upload files.<br> * * This servlet accepts just file uploads, eventually with a parameter * specifying file type * * @author Simone Chiaretta ([email protected]) */ public class SimpleUploaderServlet extends HttpServlet { private static String baseDir; private static boolean debug = false; private static boolean enabled = false; private static Hashtable<String, ArrayList<?>> exts; private static Hashtable<String, String> maxSizes; /** * Initialize the servlet.<br> * Retrieve from the servlet configuration the "baseDir" which is the root * of the file repository:<br> * If not specified the value of "/UserFiles/" will be used.<br> * Also it retrieve all allowed and denied extensions to be handled. */ public void init() throws ServletException { debug = (new Boolean(getInitParameter("debug"))).booleanValue(); if (debug) { System.out.println("\r\n---- SimpleUploaderServlet initialization started ----"); } baseDir = getInitParameter("baseDir"); enabled = (new Boolean(getInitParameter("enabled"))).booleanValue(); if (baseDir == null) { baseDir = "/UserFiles/"; } String realBaseDir = getServletContext().getRealPath(baseDir); File baseFile = new File(realBaseDir); if (!baseFile.exists()) { baseFile.mkdir(); } exts = new Hashtable<String, ArrayList<?>>(); maxSizes = new Hashtable<String, String>(); exts.put("Image", stringToArrayList(getInitParameter("ImageExt"))); maxSizes.put("Image", getInitParameter("ImageMaxSize")); exts.put("Flash", stringToArrayList(getInitParameter("FlashExt"))); maxSizes.put("Flash", getInitParameter("FlashMaxSize")); if (debug) { System.out.println("---- SimpleUploaderServlet initialization completed ----\r\n"); } } /** * Manage the Upload requests.<br> * * The servlet accepts commands sent in the following format:<br> * simpleUploader?Type=ResourceType<br> * * It store the file (renaming it in case a file with the same name exists) * and then return an HTML file with a javascript command in it. */ public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.struts2Uploader(request, response); } /** * Manage the Upload requests.<br> * * The servlet accepts commands sent in the following format:<br> * struts2Uploader?Type=ResourceType<br> * * It store the file (renaming it in case a file with the same name exists) * and then return an HTML file with a javascript command in it. */ @SuppressWarnings("unchecked") public void struts2Uploader(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { if (debug) { System.out.println("--- BEGIN DOPOST ---"); } response.setContentType("text/html; charset=UTF-8"); response.setHeader("Cache-Control", "no-cache"); PrintWriter out = response.getWriter(); //上传时间获得文件类型 String typeStr = request.getParameter("Type"); //文件上传路径 String currentPath = getUploadFileDir(this.getServletContext()); //真实路径 String currentDirPath = getServletContext().getRealPath(currentPath); currentPath = request.getContextPath() + currentPath; if (debug) { //System.out.println("baseDir:" + baseDir); //System.out.println("currentPath:" + currentPath); //System.out.println("currentDirPath:" + currentDirPath); } //上传后需要传递的参数 String retVal = "0"; String newName = ""; String fileUrl = ""; String errorMessage = ""; if (enabled) { try { //用Struts2组件上传 MultiPartRequestWrapper multiWrapper = (MultiPartRequestWrapper) request; // Bind allowed Files Enumeration fileParameterNames = multiWrapper.getFileParameterNames(); while (fileParameterNames != null && fileParameterNames.hasMoreElements()) { // get the value of this input tag name String inputName = (String) fileParameterNames.nextElement(); // get the file type String[] contentType = multiWrapper.getContentTypes(inputName); if (isNonEmpty(contentType)) { // get the name of the file from the input tag //真实文件名 String[] fileName = multiWrapper.getFileNames(inputName); if (isNonEmpty(fileName)) { // Get a File object for the uploaded File // 获得struts2上传组件存放/tmp文件 File[] files = multiWrapper.getFiles(inputName); if (files != null) { for (int index = 0; index < files.length; index++) { //文件后缀名 String ext = getExtension(fileName[index]); //判断文件是否允许上伟 if (extIsAllowed(typeStr, ext)) { if(isOutMaxSize(typeStr, request.getContentLength())) { //上传文件 String fileRename = this.getFileRename(fileName[index]); fileUrl = currentPath + "/" + fileRename; newName = fileName[index]; String uploadPath = currentDirPath + "\\" + fileRename; System.out.println(fileUrl); System.out.println(uploadPath); File dstFile = new File(uploadPath); this.copy(files[index], dstFile); } else { retVal = "1"; errorMessage = typeStr + "类型文件超过系统最大限制" + (Integer.parseInt(maxSizes.get(typeStr))/1024) + "KB，请检查上传文件大小。（如需上传请在WEB-INF/web.xml里进行设置）" ; if (debug) System.out.println("Invalid file type: " + errorMessage); } } else { //不允许上传些文件 retVal = "1"; errorMessage = "系统只允许上传" + Arrays.asList(exts.get(typeStr)) + "类型文件，请检查上传文件格式。（如需上传请在WEB-INF/web.xml里进行设置）" ; if (debug) System.out.println("Invalid file type: " + errorMessage); } } } } } } } catch (Exception ex) { if (debug) ex.printStackTrace(); retVal = "1"; errorMessage = "文件上传错误：" + ex.getMessage(); } } else { retVal = "1"; errorMessage = "(文件上传功能被禁用，请在 WEB-INF/web.xml 里进行设置) This file uploader is disabled. Please check the WEB-INF/web.xml file"; } out.println("<script type=\"text/javascript\">"); out.println("window.parent.OnUploadCompleted(" + retVal + ",'" + fileUrl + "','" + newName + "','" + errorMessage + "');"); out.println("</script>"); out.flush(); out.close(); if (debug) System.out.println("--- END DOPOST ---"); } /** * Manage the Upload requests.<br> * * The servlet accepts commands sent in the following format:<br> * simpleUploader?Type=ResourceType<br> * * It store the file (renaming it in case a file with the same name exists) * and then return an HTML file with a javascript command in it. */ public void simpleUploader(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { if (debug) { System.out.println("--- BEGIN DOPOST ---"); } response.setContentType("text/html; charset=UTF-8"); response.setHeader("Cache-Control", "no-cache"); PrintWriter out = response.getWriter(); //上传时间获得文件类型 String typeStr = request.getParameter("Type"); //文件上传路径 String currentPath = getUploadFileDir(this.getServletContext()); //真实路径 String currentDirPath = getServletContext().getRealPath(currentPath); currentPath = request.getContextPath() + currentPath; if (debug) { System.out.println("baseDir:" + baseDir); System.out.println("currentPath:" + currentPath); System.out.println("currentDirPath:" + currentDirPath); } //上传后需要传递的参数 String retVal = "0"; String newName = ""; String fileUrl = ""; String errorMessage = ""; if (enabled) { try { //创建文件项（FileItem）实例化工厂 DiskFileItemFactory factory = new DiskFileItemFactory(); // 设置内存缓冲区大小，这里是10kb。当上传过程中文件的大小超过缓冲区大小，先写入磁盘的临时文件目录 // 目的是防止上传的文件过大时，占用大量的内存资源。默认10KB factory.setSizeThreshold(10 * 1024 * 1024); // 设置临时文件目录，使用系统级的临时目录，部分老的JDK版本可能不支持。 factory.setRepository(new File(java.lang.System.getProperty("java.io.tmpdir"))); // 将设置好的文件项工厂传递给文件上传执行类 ServletFileUpload upload = new ServletFileUpload(factory); // 设置最大文件尺寸，这里是10MB int maxSize = 1*1024*1024; //根据Web.xml定义读取大小 Object typeMaxSize = maxSizes.get(typeStr); if(null != typeMaxSize && !("").equals(typeMaxSize.toString().trim())) { maxSize = Integer.parseInt(typeMaxSize.toString()); } upload.setSizeMax(maxSize); //文件上传 List items = upload.parseRequest(new ServletRequestContext(request)); Map<String, Object> fields = new HashMap<String, Object>(); Iterator iter = items.iterator(); while (iter.hasNext()) { FileItem item = (FileItem) iter.next(); if (item.isFormField()) fields.put(item.getFieldName(), item.getString()); else fields.put(item.getFieldName(), item); } //获得新上传文件 FileItem uplFile = (FileItem) fields.get("NewFile"); //文件名 String fileNameLong = uplFile.getName(); System.out.println("fileNameLong:" + fileNameLong); fileNameLong = fileNameLong.replace('\\', '/'); String[] pathParts = fileNameLong.split("/"); String fileName = pathParts[pathParts.length - 1]; fileName = this.getFileRename(fileName); //文件后缀名 String ext = getExtension(fileName); //创建新文件 File pathToSave = new File(currentDirPath, fileName); fileUrl = currentPath + "/" + fileName; //判断文件是否允许上伟 if (extIsAllowed(typeStr, ext)) { //上传文件 uplFile.write(pathToSave); } else { //不允许上传些文件 retVal = "202"; errorMessage = "系统不允许上传此[ " + ext + "]类型文件" ; if (debug) System.out.println("Invalid file type: " + ext + errorMessage); } } catch (Exception ex) { if (debug) ex.printStackTrace(); retVal = "203"; errorMessage = "文件上传错误..."; } } else { retVal = "1"; errorMessage = "(文件上传功能被禁用，请在 WEB-INF/web.xml 里进行设置) This file uploader is disabled. Please check the WEB-INF/web.xml file"; } out.println("<script type=\"text/javascript\">"); out.println("window.parent.OnUploadCompleted(" + retVal + ",'" + fileUrl + "','" + newName + "','" + errorMessage + "');"); out.println("</script>"); out.flush(); out.close(); if (debug) System.out.println("--- END DOPOST ---"); } /** * Helper function to convert the configuration string to an ArrayList. */ private ArrayList<String> stringToArrayList(String str) { //上传文件后缀 if (debug) System.out.println(str); String[] strArr = str.split("\\|"); ArrayList<String> tmp = new ArrayList<String>(); if (str.length() > 0) { for (int i = 0; i < strArr.length; ++i) { if (debug) System.out.println(i + " - " + strArr[i]); tmp.add(strArr[i].toLowerCase()); } } return tmp; } /** * Helper function to verify if a file extension is allowed or not allowed. */ private boolean extIsAllowed(String fileType, String ext) { //判断是否允许上传的文件后缀 ext = ext.toLowerCase(); ArrayList extList = (ArrayList) exts.get(fileType); //如果为空则不允许上传 if(null == extList || extList.isEmpty()) { return false ; } //如果后缀存在则同意上传 if(extList.contains(ext)) { return true; } return false; } /** * Method：判断文件大小是否超出允许范围<br> * Author：HF-JWinder(2009-6-2 下午01:59:43) * @param fileType 上传文件类型 * @param fileSize 上传文件大小 * @return boolean */ private boolean isOutMaxSize(String fileType, long fileSize) { //设置最大文件尺寸默认最大上似1MB long defaultMaxSize = 1*1024*1024; //根据Web.xml定义读取大小 Object typeMaxSize = maxSizes.get(fileType); if(null != typeMaxSize && !("").equals(typeMaxSize.toString().trim())) { defaultMaxSize = Integer.parseInt(typeMaxSize.toString()); } if(fileSize > defaultMaxSize) { return false ; } else { return true; } } /** * 上传文件目录更改了按照上传日期自动生成文件夹的路径 */ private String getUploadFileDir(ServletContext context) { String fileSpr = System.getProperty("file.separator"); Date currentDate = new Date(); // 判断当月的目录是否存在 DateFormat dateFormat = new SimpleDateFormat("yyyy"); String yyyy = dateFormat.format(currentDate); dateFormat = new SimpleDateFormat("MM"); String MM = dateFormat.format(currentDate); dateFormat = new SimpleDateFormat("dd"); String dd = dateFormat.format(currentDate); String uploadDir = baseDir + yyyy + fileSpr + MM + fileSpr + dd; File dir = new File(context.getRealPath("/") + uploadDir); if (!dir.exists()) { dir.mkdirs(); } uploadDir = uploadDir.replace("\\", "/") ; //System.out.println("uploadDir:" + uploadDir); return uploadDir ; } /** * 重新命名上传文件，格式:yyyyMMddHHmmssS + (原名称) */ private String getFileRename(String fileName) { String YYYYMMDDHHMMSSS = "yyyyMMddHHmmssS"; SimpleDateFormat sdf = new SimpleDateFormat(YYYYMMDDHHMMSSS); String uuidName = sdf.format(new Date()); uuidName += "(" + getNameWithoutExtension(fileName) + ")" + "." + getExtension(fileName); return uuidName; } /** * This method was fixed after Kris Barnhoorn (kurioskronic) submitted SF * bug #991489 */ private String getNameWithoutExtension(String fileName) { return fileName.substring(0, fileName.lastIndexOf(".")); } /** * This method was fixed after Kris Barnhoorn (kurioskronic) submitted SF * bug #991489 */ private String getExtension(String fileName) { return fileName.substring(fileName.lastIndexOf(".") + 1); } private final int BUFFER_SIZE = 16 * 1024; //自己封装的一个把源文件对象复制成目标文件对象 private void copy(File src, File dst) { InputStream in = null; OutputStream out = null; try { in = new BufferedInputStream(new FileInputStream(src), BUFFER_SIZE); out = new BufferedOutputStream(new FileOutputStream(dst), BUFFER_SIZE); byte[] buffer = new byte[BUFFER_SIZE]; int len = 0; while ((len = in.read(buffer)) > 0) { out.write(buffer, 0, len); } } catch (IOException e) { e.printStackTrace(); } finally { if (null != in) { try { in.close(); } catch (IOException e) { e.printStackTrace(); } } if (null != out) { try { out.close(); } catch (IOException e) { e.printStackTrace(); } } } } private static boolean isNonEmpty(Object[] objArray) { boolean result = false; for (int index = 0; index < objArray.length && !result; index++) { if (objArray[index] != null) { result = true; } } return result; } }
最后进行测试通过，我这里只是改了其中一个上传类，我把FCKeditor简化了！只有用到了图片上传。
如果你想转变一下上传方式，不用S2的话，只要在doPost改一下上传类。
希望对在用FCKeditor，Struts2的朋友有所帮助。
还好整个工程不大，不到1M。
附件提供了，Demo并且相应的包。