一开始我不懂这个ConnectorServlet是何用处，后来发现是专门用于文件上传的，因为fckeditor默认是不支持这个功能的。

ConnectorServlet:

/* * FCKeditor - The text editor for Internet - http://www.fckeditor.net * Copyright (C) 2003-2008 Frederico Caldeira Knabben *  * == BEGIN LICENSE == *  * Licensed under the terms of any of the following licenses at your * choice: *  *  - GNU General Public License Version 2 or later (the "GPL") *    http://www.gnu.org/licenses/gpl.html *  *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL") *    http://www.gnu.org/licenses/lgpl.html *  *  - Mozilla Public License Version 1.1 or later (the "MPL") *    http://www.mozilla.org/MPL/MPL-1.1.html *  * == END LICENSE == */package com.sanqing.fckeditor;import java.io.File;import java.io.IOException;import java.io.PrintWriter;import java.util.List;import java.util.UUID;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import net.fckeditor.connector.Messages;import net.fckeditor.handlers.CommandHandler;import net.fckeditor.handlers.ConnectorHandler;import net.fckeditor.handlers.ExtensionsHandler;import net.fckeditor.handlers.RequestCycleHandler;import net.fckeditor.handlers.ResourceTypeHandler;import net.fckeditor.response.UploadResponse;import net.fckeditor.response.XmlResponse;import net.fckeditor.tool.Utils;import net.fckeditor.tool.UtilsFile;import net.fckeditor.tool.UtilsResponse;import org.apache.commons.fileupload.FileItem;import org.apache.commons.fileupload.FileItemFactory;import org.apache.commons.fileupload.disk.DiskFileItemFactory;import org.apache.commons.fileupload.servlet.ServletFileUpload;import org.apache.commons.io.FilenameUtils;import org.slf4j.Logger;import org.slf4j.LoggerFactory;/** * Servlet to upload and browse files.
 *  * This servlet accepts 4 commands which interact with the server-side * filesystem.
 * The allowed commands are: * 
     
       * 
      
GetFolders: Retrieves a list of folders in the current * folder
 * 
      
GetFoldersAndFiles: Retrives a list of files and folders * in the current folder
 * 
      
CreateFolder: Creates a new folder in the current folder
 * 
      
FileUpload: Stores an uploaded file into the current * folder. (must be sent with POST)
 * 
     
 *  * @version $Id: ConnectorServlet.java 2101 2008-06-22 22:00:48Z mosipov $ */public class ConnectorServlet extends HttpServlet {    private static final long serialVersionUID = -5742008970929377161L;    private static final Logger logger = LoggerFactory.getLogger(ConnectorServlet.class);    /**     * Initialize the servlet: mkdir <DefaultUserFilesPath>     */    public void init() throws ServletException, IllegalArgumentException {        String realDefaultUserFilesPath = getServletContext().getRealPath(                ConnectorHandler.getDefaultUserFilesPath());        File defaultUserFilesDir = new File(realDefaultUserFilesPath);        UtilsFile.checkDirAndCreate(defaultUserFilesDir);        logger.info("ConnectorServlet successfully initialized!");    }    /**     * Manage the GET requests (GetFolders,     * GetFoldersAndFiles, CreateFolder).
     *      * The servlet accepts commands sent in the following format:
     * connector?Command=<CommandName>&Type=<ResourceType>&CurrentFolder=<FolderPath>     * 
     * It executes the commands and then returns the result to the client in XML     * format.     * 
     */    public void doGet(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        logger.debug("Entering ConnectorServlet#doGet");        response.setCharacterEncoding("UTF-8");        response.setContentType("application/xml; charset=UTF-8");        response.setHeader("Cache-Control", "no-cache");        PrintWriter out = response.getWriter();        String commandStr = request.getParameter("Command");        String typeStr = request.getParameter("Type");        String currentFolderStr = request.getParameter("CurrentFolder");        logger.debug("Parameter Command: {}", commandStr);        logger.debug("Parameter Type: {}", typeStr);        logger.debug("Parameter CurrentFolder: {}", currentFolderStr);        XmlResponse xr;        if (!RequestCycleHandler.isEnabledForFileBrowsing(request))            xr = new XmlResponse(XmlResponse.EN_ERROR, Messages.NOT_AUTHORIZED_FOR_BROWSING);        else if (!CommandHandler.isValidForGet(commandStr))            xr = new XmlResponse(XmlResponse.EN_ERROR, Messages.INVALID_COMMAND);        else if (typeStr != null && !ResourceTypeHandler.isValid(typeStr))            xr = new XmlResponse(XmlResponse.EN_ERROR, Messages.INVALID_TYPE);        else if (!UtilsFile.isValidPath(currentFolderStr))            xr = new XmlResponse(XmlResponse.EN_ERROR, Messages.INVALID_CURRENT_FOLDER);        else {            CommandHandler command = CommandHandler.getCommand(commandStr);            ResourceTypeHandler resourceType = ResourceTypeHandler.getDefaultResourceType(typeStr);            String typePath = UtilsFile.constructServerSidePath(request, resourceType);            String typeDirPath = getServletContext().getRealPath(typePath);            File typeDir = new File(typeDirPath);            UtilsFile.checkDirAndCreate(typeDir);            File currentDir = new File(typeDir, currentFolderStr);            if (!currentDir.exists())                xr = new XmlResponse(XmlResponse.EN_INVALID_FOLDER_NAME);            else {                xr = new XmlResponse(command, resourceType, currentFolderStr, UtilsResponse                        .constructResponseUrl(request, resourceType, currentFolderStr, true,                                ConnectorHandler.isFullUrl()));                if (command.equals(CommandHandler.GET_FOLDERS))                    xr.setFolders(currentDir);                else if (command.equals(CommandHandler.GET_FOLDERS_AND_FILES))                    xr.setFoldersAndFiles(currentDir);                else if (command.equals(CommandHandler.CREATE_FOLDER)) {                    String newFolderStr = UtilsFile.sanitizeFolderName(                            new String(request.getParameter("NewFolderName").getBytes("ISO8859-1"),"UTF-8")                            );                    logger.debug("Parameter NewFolderName: {}", newFolderStr);                    File newFolder = new File(currentDir, newFolderStr);                    int errorNumber = XmlResponse.EN_UKNOWN;                    if (newFolder.exists())                        errorNumber = XmlResponse.EN_ALREADY_EXISTS;                    else {                        try {                            errorNumber = (newFolder.mkdir()) ? XmlResponse.EN_OK                                    : XmlResponse.EN_INVALID_FOLDER_NAME;                        } catch (SecurityException e) {                            errorNumber = XmlResponse.EN_SECURITY_ERROR;                        }                    }                    xr.setError(errorNumber);                }            }        }        out.print(xr);        out.flush();        out.close();        logger.debug("Exiting ConnectorServlet#doGet");    }    /**     * Manage the POST requests (FileUpload).
     *      * The servlet accepts commands sent in the following format:
     * connector?Command=<FileUpload>&Type=<ResourceType>&CurrentFolder=<FolderPath>     * with the file in the POST body.
     * 
     * It stores an uploaded file (renames a file if another exists with the     * same name) and then returns the JavaScript callback.     */    @SuppressWarnings("unchecked")    public void doPost(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        logger.debug("Entering Connector#doPost");        response.setCharacterEncoding("UTF-8");        response.setContentType("text/html; charset=UTF-8");        response.setHeader("Cache-Control", "no-cache");        PrintWriter out = response.getWriter();        String commandStr = request.getParameter("Command");        String typeStr = request.getParameter("Type");        String currentFolderStr = request.getParameter("CurrentFolder");        logger.debug("Parameter Command: {}", commandStr);        logger.debug("Parameter Type: {}", typeStr);        logger.debug("Parameter CurrentFolder: {}", currentFolderStr);        UploadResponse ur;        // if this is a QuickUpload request, 'commandStr' and 'currentFolderStr'        // are empty        if (Utils.isEmpty(commandStr) && Utils.isEmpty(currentFolderStr)) {            commandStr = "QuickUpload";            currentFolderStr = "/";        }        if (!RequestCycleHandler.isEnabledForFileUpload(request))            ur = new UploadResponse(UploadResponse.SC_SECURITY_ERROR, null, null,                    Messages.NOT_AUTHORIZED_FOR_UPLOAD);        else if (!CommandHandler.isValidForPost(commandStr))            ur = new UploadResponse(UploadResponse.SC_ERROR, null, null, Messages.INVALID_COMMAND);        else if (typeStr != null && !ResourceTypeHandler.isValid(typeStr))            ur = new UploadResponse(UploadResponse.SC_ERROR, null, null, Messages.INVALID_TYPE);        else if (!UtilsFile.isValidPath(currentFolderStr))            ur = UploadResponse.UR_INVALID_CURRENT_FOLDER;        else {            ResourceTypeHandler resourceType = ResourceTypeHandler.getDefaultResourceType(typeStr);            String typePath = UtilsFile.constructServerSidePath(request, resourceType);            String typeDirPath = getServletContext().getRealPath(typePath);            File typeDir = new File(typeDirPath);            UtilsFile.checkDirAndCreate(typeDir);            File currentDir = new File(typeDir, currentFolderStr);            if (!currentDir.exists())                ur = UploadResponse.UR_INVALID_CURRENT_FOLDER;            else {                String newFilename = null;                FileItemFactory factory = new DiskFileItemFactory();                ServletFileUpload upload = new ServletFileUpload(factory);                //设置编码格式                upload.setHeaderEncoding("UTF-8");                try {                    List
     
       items = upload.parseRequest(request);                    // We upload only one file at the same time                    FileItem uplFile = items.get(0);                    String rawName = UtilsFile.sanitizeFileName(uplFile.getName());                    String filename = FilenameUtils.getName(rawName);                    String baseName = FilenameUtils.removeExtension(filename);                    String extension = FilenameUtils.getExtension(filename);                    //文件名自动替换                    filename = UUID.randomUUID().toString() + "."+ extension;                                                            if (!ExtensionsHandler.isAllowed(resourceType, extension))                        ur = new UploadResponse(UploadResponse.SC_INVALID_EXTENSION);                    else {                        // construct an unique file name                        File pathToSave = new File(currentDir, filename);                        int counter = 1;                        while (pathToSave.exists()) {                            newFilename = baseName.concat("(").concat(String.valueOf(counter))                                    .concat(")").concat(".").concat(extension);                            pathToSave = new File(currentDir, newFilename);                            counter++;                        }                        if (Utils.isEmpty(newFilename))                            ur = new UploadResponse(UploadResponse.SC_OK, UtilsResponse                                    .constructResponseUrl(request, resourceType, currentFolderStr,                                            true, ConnectorHandler.isFullUrl()).concat(filename));                        else                            ur = new UploadResponse(UploadResponse.SC_RENAMED,                                    UtilsResponse.constructResponseUrl(request, resourceType,                                            currentFolderStr, true, ConnectorHandler.isFullUrl())                                            .concat(newFilename), newFilename);                        // secure image check                        if (resourceType.equals(ResourceTypeHandler.IMAGE)                                && ConnectorHandler.isSecureImageUploads()) {                            if (UtilsFile.isImage(uplFile.getInputStream()))                                uplFile.write(pathToSave);                            else {                                uplFile.delete();                                ur = new UploadResponse(UploadResponse.SC_INVALID_EXTENSION);                            }                        } else                            uplFile.write(pathToSave);                    }                } catch (Exception e) {                    ur = new UploadResponse(UploadResponse.SC_SECURITY_ERROR);                }            }        }        out.print(ur);        out.flush();        out.close();        logger.debug("Exiting Connector#doPost");    }}
     

fckeditor.properties:

connector.userActionImpl=net.fckeditor.requestcycle.impl.UserActionImpl

connector.userPathBuilderImpl=com.fckeditor.fckeditor.MyUserPath

 

web.xml下当然要加入servlet的配置：

  <servlet>

    <servlet-name>Connector</servlet-name>

    <servlet-class>

          com.sanqing.fckeditor.ConnectorServlet

      </servlet-class>

    <load-on-startup>1</load-on-startup>

  </servlet>

  <servlet-mapping>

    <servlet-name>Connector</servlet-name>

    <url-pattern>

        /user/fckeditor/editor/filemanager/connectors/*

      </url-pattern>

  </servlet-mapping>

 

fckeditor主要是用作前端的插件，以下是fckeditor的主体：

参考文章：http://huaxia524151.iteye.com/blog/846520

 

最前面的引入：<%@ taglib uri="http://java.fckeditor.net" prefix="FCK"%> 

页面中的使用：

              <div>

                  <label>内容：</label>

                  <FCK:editor instanceName="content" basePath="/user/fckeditor" toolbarSet="myToolbar" height="400"></FCK:editor>

              </div>

 

<%@ page language="java" contentType="text/html; charset=gb2312"    pageEncoding="gb2312"%><%@ taglib uri="http://java.fckeditor.net" prefix="FCK"%>    
     
     
     
     
  
      
    
       
 
              
        
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