我的fckeditor实践

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.<br />
*
* This servlet accepts 4 commands which interact with the server-side
* filesystem.<br />
* The allowed commands are:
* <ul>
* <li><code>GetFolders</code>: Retrieves a list of folders in the current
* folder</li>
* <li><code>GetFoldersAndFiles</code>: Retrives a list of files and folders
* in the current folder</li>
* <li><code>CreateFolder</code>: Creates a new folder in the current folder</li>
* <li><code>FileUpload</code>: Stores an uploaded file into the current
* folder. (must be sent with POST)</li>
* </ul>
*
* @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: <code>mkdir</code> <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 <code>GET</code> requests (<code>GetFolders</code>,
* <code>GetFoldersAndFiles</code>, <code>CreateFolder</code>).<br/>
*
* The servlet accepts commands sent in the following format:<br/>
* <code>connector?Command=<CommandName>&Type=<ResourceType>&CurrentFolder=<FolderPath></code>
* <p>
* It executes the commands and then returns the result to the client in XML
* format.
* </p>
*/
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 <code>POST</code> requests (<code>FileUpload</code>).<br />
*
* The servlet accepts commands sent in the following format:<br />
* <code>connector?Command=<FileUpload>&Type=<ResourceType>&CurrentFolder=<FolderPath></code>
* with the file in the <code>POST</code> body.<br />
* <br>
* 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<FileItem> 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"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<title>添加文章</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link type="text/css" rel="stylesheet" href="../css/main.css" media="all" />
<!--[if IE 6]><link type="text/css" rel="stylesheet" href="css/ie6.css" media="all" /><![endif]-->
<script type="text/javascript" src="../js/mootools.js"></script>
<script type="text/javascript" src="../js/site.js"></script>
</head>
<body>
<div id="wrapper">
<div id="container">
<div id="scene"> <img src="../images/scene.jpg" alt="" />
<h1>${empty sessionScope.blogtitle ? "博客网站系统":sessionScope.blogtitle} <br/>
<font size="8">${empty sessionScope.idiograph ? "我的签名":sessionScope.idiograph}</font>
</h1>
<div id="scale_area">
<div id="scale_knob">» Font Size «</div>
</div>
<div id="menu">
<div class="holder"> <a href="../showAllArticle.action">博客首页</a> </div>
<div class="holder"> <a href="showUserAllArticle.action">用户首页</a> </div>
<div class="holder"> <a href="editbloginfo.jsp">个性化设置</a> </div>
<div class="holder"> <a href="addArticle.jsp">写日志</a> </div>
<div class="holder"> <a href="showPhoto.action">相册</a> </div>
</div>
</div>
<div id="content">
<div id="col_left">
<div class="post">
<div class="meta"></div>
<div class="comments"><div class="comment"></div>
<h2>添加文章</h2>
<form class="h" action="addArticle.action" method="post">
<div>
<label>标题：</label>
<input type="text" name="title" />
</div>
<div>
<label>内容：</label>
<FCK:editor instanceName="content" basePath="/user/fckeditor" toolbarSet="myToolbar" height="400"></FCK:editor>
</div>
<div>
<label></label>
<div class="clear"> </div>
</div>
<div class="button_wrapper">
<input name="提交" type="submit" class="button" value="提交" />
</div>
</form>
</div>
</div>
</div>
<div id="col_right">
<div id="search_box">
<form action="http://www.865171.cn/" method="post">
<div>
<input type="text" name="search" />
</div>
<div class="button_wrapper">
<input type="submit" value="Search" class="button" />
</div>
<div class="clear"> </div>
</form>
</div>
<div id="sidebar">
<h2>页面导航</h2>
<ul>
<li><a href="../showAllArticle.action">博客首页</a></li>
<li><a href="showUserAllArticle.action">用户首页</a></li>
<li><a href="editbloginfo.jsp">个性化设置</a></li>
<li><a href="addArticle.jsp">写日志</a></li>
<li><a href="showPhoto.action">相册</a></li>
</ul>
</div>
</div>
<div class="clear"> </div>
</div>
<div id="footer">
<div class="clear"> </div>
<hr />
<p class="credit">博客网站系统</p>
</div>
</div>
</div>
</body>
</html>