这里以上传图片为例
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先决条件
- 你已经看完了上一篇 : ueditor 之 holleworld，因为我是使用上一篇的开发环境
- 你已经知道如何搭建 ueditor 的 helloworld
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问题
- ueditor 上传图片的过程不受我们控制，编辑过程产生的垃圾（例如：用户上传后没有使用的图片）不知如何清理？
- 上传图片只能保存在本服务器上（继承上一篇的开发环境：也就本 tomcat 上），使得我们无法为本项目配置单独一台图片服务器进行开发、生产（服务器集群）
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寻找后端入口 ：
（com.baidu.ueditor.ActionEnter）
查看 ueditor.config.js
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下载 ueditor 源码
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删除 ueditor jar包
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引入源码
几个比较重要的类(突然然发现这些名字都起的好好，见名知义)：
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ActionEnter.java
后台入口，调用 CongigManager 加载 jsp/config.json 的配置信息，根据不同请求执行不同的逻辑代码- 构造方法，初始化的时候 利用 CongigManager 加载 jsp/config.json 的数据
public ActionEnter ( HttpServletRequest request, String rootPath ) { this.request = request; this.rootPath = rootPath; this.actionType = request.getParameter( "action" ); this.contextPath = request.getContextPath(); this.configManager = ConfigManager.getInstance( this.rootPath, this.contextPath, request.getRequestURI() ); }- 根据不同请求执行不同的逻辑代码
public String invoke() { if ( actionType == null || !ActionMap.mapping.containsKey( actionType ) ) { return new BaseState( false, AppInfo.INVALID_ACTION ).toJSONString(); } if ( this.configManager == null || !this.configManager.valid() ) { return new BaseState( false, AppInfo.CONFIG_ERROR ).toJSONString(); } State state = null; int actionCode = ActionMap.getType( this.actionType ); Map<String, Object> conf = null; switch ( actionCode ) { case ActionMap.CONFIG: return this.configManager.getAllConfig().toString(); case ActionMap.UPLOAD_IMAGE: case ActionMap.UPLOAD_SCRAWL: case ActionMap.UPLOAD_VIDEO: case ActionMap.UPLOAD_FILE: conf = this.configManager.getConfig( actionCode ); state = new Uploader( request, conf ).doExec(); break; case ActionMap.CATCH_IMAGE: conf = configManager.getConfig( actionCode ); String[] list = this.request.getParameterValues( (String)conf.get( "fieldName" ) ); state = new ImageHunter( conf ).capture( list ); break; case ActionMap.LIST_IMAGE: case ActionMap.LIST_FILE: conf = configManager.getConfig( actionCode ); int start = this.getStartIndex(); state = new FileManager( conf ).listFile( start ); break; } return state.toJSONString(); } -
ConfigManager.java
配置管理器 : 看下面代码对比一下 jsp/config.json 就知道了
public Map<String, Object> getConfig ( int type ) { Map<String, Object> conf = new HashMap<String, Object>(); String savePath = null; switch ( type ) { case ActionMap.UPLOAD_FILE: conf.put( "isBase64", "false" ); conf.put( "maxSize", this.jsonConfig.getLong( "fileMaxSize" ) ); conf.put( "allowFiles", this.getArray( "fileAllowFiles" ) ); conf.put( "fieldName", this.jsonConfig.getString( "fileFieldName" ) ); savePath = this.jsonConfig.getString( "filePathFormat" ); break; case ActionMap.UPLOAD_IMAGE: conf.put( "isBase64", "false" ); conf.put( "maxSize", this.jsonConfig.getLong( "imageMaxSize" ) ); conf.put( "allowFiles", this.getArray( "imageAllowFiles" ) ); conf.put( "fieldName", this.jsonConfig.getString( "imageFieldName" ) ); savePath = this.jsonConfig.getString( "imagePathFormat" ); break; case ActionMap.UPLOAD_VIDEO: conf.put( "maxSize", this.jsonConfig.getLong( "videoMaxSize" ) ); conf.put( "allowFiles", this.getArray( "videoAllowFiles" ) ); conf.put( "fieldName", this.jsonConfig.getString( "videoFieldName" ) ); savePath = this.jsonConfig.getString( "videoPathFormat" ); break; case ActionMap.UPLOAD_SCRAWL: conf.put( "filename", ConfigManager.SCRAWL_FILE_NAME ); conf.put( "maxSize", this.jsonConfig.getLong( "scrawlMaxSize" ) ); conf.put( "fieldName", this.jsonConfig.getString( "scrawlFieldName" ) ); conf.put( "isBase64", "true" ); savePath = this.jsonConfig.getString( "scrawlPathFormat" ); break; case ActionMap.CATCH_IMAGE: conf.put( "filename", ConfigManager.REMOTE_FILE_NAME ); conf.put( "filter", this.getArray( "catcherLocalDomain" ) ); conf.put( "maxSize", this.jsonConfig.getLong( "catcherMaxSize" ) ); conf.put( "allowFiles", this.getArray( "catcherAllowFiles" ) ); conf.put( "fieldName", this.jsonConfig.getString( "catcherFieldName" ) + "[]" ); savePath = this.jsonConfig.getString( "catcherPathFormat" ); break; case ActionMap.LIST_IMAGE: conf.put( "allowFiles", this.getArray( "imageManagerAllowFiles" ) ); conf.put( "dir", this.jsonConfig.getString( "imageManagerListPath" ) ); conf.put( "count", this.jsonConfig.getInt( "imageManagerListSize" ) ); break; case ActionMap.LIST_FILE: conf.put( "allowFiles", this.getArray( "fileManagerAllowFiles" ) ); conf.put( "dir", this.jsonConfig.getString( "fileManagerListPath" ) ); conf.put( "count", this.jsonConfig.getInt( "fileManagerListSize" ) ); break; } conf.put( "savePath", savePath ); conf.put( "rootPath", this.rootPath ); return conf; }
3. Uploader.java 执行下载 4. State.java 处理状态接口 ,前后台沟通的接口。 5. BaseState.java State 的其中一个实现类里面包含了一个 Map<String ,String > 实例，通过 Map 添加前台需要的参数。 1. 前台请求规范  2. 后台返回规范（以上传图片为例）  -
具体后台运行过程，自己用 debug 工具，多走几下就知道了（这里就不演示了）
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运行项目
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上传图片功能也可正常使用
