问题描述：无法上传图片，提示配置项加载有问题
大致情形：直接下载的ue编辑器，放在了/resources/ 目录下，也就是静态资源路径，然后更改web.xml，将tomcat默认拦截器配置放到所有servlet的最上面
1 23 default 4/resources/* 5
可即使是这样，打开demo界面，点图片上传，提示后端配置未正常加载，手动输入百度ue的controller.jsp地址时却输出的是controller.jsp的源码，不放弃，继续：
查看官方文档得知默认会访问controller.jsp是因为如下配置项（ps:图是改过后的，非默认配置），既然这样，那咱们就自己定义个controller，把controller.jsp的代码copy到自己的controller里面，然后更改图中配置项来处理ue的请求：
说做就做：
1 package **********************************; 2 3 import javax.servlet.http.HttpServletRequest; 4 import javax.servlet.http.HttpServletResponse; 5 6 import org.springframework.stereotype.Controller; 7 import org.springframework.web.bind.annotation.RequestMapping; 8 import org.springframework.web.bind.annotation.RequestParam; 9 10 import com.baidu.ueditor.ActionEnter;11 12 @Controller13 @RequestMapping("/ueditor")14 public class UeditorController {15 16 @RequestMapping("/upload")17 public void exec(@RequestParam(value="action",required=false)String action,18 @RequestParam(value="callback",required=false)String callback,19 HttpServletRequest req, HttpServletResponse res) {20 try {21 req.setCharacterEncoding("utf-8");22 res.setHeader("Content-Type", "text/html");23 String rootPath =req.getSession().getServletContext().getRealPath("/");24 res.getWriter().write(new ActionEnter(req, rootPath,"").exec());25 } catch (Exception e) {26 e.printStackTrace();27 }28 }29 } 这下应该可以了吧，no,no,no,还是提示后端服务为正常加载，debug模式走起，原来百度ue有个小问题，归纳起来如下：
首先肯定要加载所有配置，java语言的配置是在config.json中配置的，然后引申出另一个问题，如何获取config.json的真实路径，
原来百度的大神们是这样做的：假设你们可以访问到ue的初始页面，也就是可以看到编辑框，那么ue在编辑框初始化的时候就发个询问后端配置是否正常的get请求，就是ueditor.config.js中配置的serverUrl，然后加个参数 ?action=config，代码里最后走这行代码：
1 res.getWriter().write(new ActionEnter(req, rootPath,"").exec());
rootpath是项目的真实物理路径，而后用request.getRequestURI获取访问路径，两者加到一起，就获取到了config.json文件所在路径的文件夹（假设还是访问的controller.jsp，那么是没问题的.ps:一改问题就多。。。）,这样就可以加载config.json文件中的所有配置了。然而spring mvc可随意定义url路径，所以，这样做就有问题了，所以就出了上面那个配置项有问题无法上传的提示了。那怎么解决呢？在我走了一段弯路之后怒了，大爷的不就是要加载config.json吗？何必绕那么大的圈子，我直接给你不就完了？于是乎,下载ue的jar包源码，更改ActionEnter的构造方法，将路径传过去，最后的ActionEnter如下：
1 package com.baidu.ueditor; 2 3 import java.util.Map; 4 5 import javax.servlet.http.HttpServletRequest; 6 7 import com.baidu.ueditor.define.ActionMap; 8 import com.baidu.ueditor.define.AppInfo; 9 import com.baidu.ueditor.define.BaseState; 10 import com.baidu.ueditor.define.State; 11 import com.baidu.ueditor.hunter.FileManager; 12 import com.baidu.ueditor.hunter.ImageHunter; 13 import com.baidu.ueditor.upload.Uploader; 14 15 public class ActionEnter { 16 17 private HttpServletRequest request = null; 18 19 private String rootPath = null; 20 private String contextPath = null; 21 22 private String actionType = null; 23 24 private ConfigManager configManager = null; 25 26 public ActionEnter ( HttpServletRequest request, String rootPath,String jsonFilePath ) { 27 28 this.request = request; 29 this.rootPath = rootPath; 30 this.actionType = request.getParameter( "action" ); 31 this.contextPath = request.getContextPath(); 32 this.configManager = ConfigManager.getInstance( this.rootPath,jsonFilePath, this.contextPath, request.getRequestURI().replace(request.getContextPath(),"") ); 33 34 } 35 36 public String exec () { 37 38 String callbackName = this.request.getParameter("callback"); 39 40 if ( callbackName != null ) { 41 42 if ( !validCallbackName( callbackName ) ) { 43 return new BaseState( false, AppInfo.ILLEGAL ).toJSONString(); 44 } 45 46 return callbackName+"("+this.invoke()+");"; 47 48 } else { 49 return this.invoke(); 50 } 51 52 } 53 54 public String invoke() { 55 56 if ( actionType == null || !ActionMap.mapping.containsKey( actionType ) ) { 57 return new BaseState( false, AppInfo.INVALID_ACTION ).toJSONString(); 58 } 59 60 if ( this.configManager == null || !this.configManager.valid() ) { 61 return new BaseState( false, AppInfo.CONFIG_ERROR ).toJSONString(); 62 } 63 64 State state = null; 65 66 int actionCode = ActionMap.getType( this.actionType ); 67 68 Map conf = null; 69 70 switch ( actionCode ) { 71 72 case ActionMap.CONFIG: 73 return this.configManager.getAllConfig().toString(); 74 75 case ActionMap.UPLOAD_IMAGE: 76 case ActionMap.UPLOAD_SCRAWL: 77 case ActionMap.UPLOAD_VIDEO: 78 case ActionMap.UPLOAD_FILE: 79 conf = this.configManager.getConfig( actionCode ); 80 state = new Uploader( request, conf ).doExec(); 81 break; 82 83 case ActionMap.CATCH_IMAGE: 84 conf = configManager.getConfig( actionCode ); 85 String[] list = this.request.getParameterValues( (String)conf.get( "fieldName" ) ); 86 state = new ImageHunter( conf ).capture( list ); 87 break; 88 89 case ActionMap.LIST_IMAGE: 90 case ActionMap.LIST_FILE: 91 conf = configManager.getConfig( actionCode ); 92 int start = this.getStartIndex(); 93 state = new FileManager( conf ).listFile( start ); 94 break; 95 96 } 97 98 return state.toJSONString(); 99 100 }101 102 public int getStartIndex () {103 104 String start = this.request.getParameter( "start" );105 106 try {107 return Integer.parseInt( start );108 } catch ( Exception e ) {109 return 0;110 }111 112 }113 114 /**115 * callback参数验证116 */117 public boolean validCallbackName ( String name ) {118 119 if ( name.matches( "^[a-zA-Z_]+[\\w0-9_]*$" ) ) {120 return true;121 }122 123 return false;124 125 }126 127 } 终于成功了，
以为终于可以结束了，然而并不是，点击上传图片老提示没有发现上传的数据，再次debug源码，spring mvc对request进行了包装，导致无法获取上传数据，无语了，那就直接换servlet处理，上代码：
1 package *************************; 2 3 import java.io.IOException; 4 5 import javax.servlet.ServletException; 6 import javax.servlet.http.HttpServlet; 7 import javax.servlet.http.HttpServletRequest; 8 import javax.servlet.http.HttpServletResponse; 9 10 import com.baidu.ueditor.ActionEnter;11 12 13 public class UeditorController extends HttpServlet{14 15 /**16 * 17 */18 private static final long serialVersionUID = 10001L;19 20 @Override21 protected void doGet(HttpServletRequest req, HttpServletResponse resp)22 throws ServletException, IOException {23 doPost(req, resp);24 }25 26 @Override27 protected void doPost(HttpServletRequest req, HttpServletResponse resp)28 throws ServletException, IOException {29 req.setCharacterEncoding("utf-8");30 resp.setHeader("Content-Type", "text/html");31 String rootPath =req.getSession().getServletContext().getRealPath("/");32 String jsonFilePath=rootPath+"/resources/ueditor/jsp/config.json";33 resp.getWriter().write(new ActionEnter(req, rootPath,jsonFilePath).exec());34 }35 } web.xml添加配置：
12 5ueditor 3com.*.*.*.controller.UeditorController 46 ueditor 7/ueditor/upload 8
终于要结束了吗？no，前端无法显示图片，无法在线管理，原来图片上传时保存的路径是在config.json中的
1 "imagePathFormat": "/resources/ueditor/jsp/upload/image/{yyyy}{MM}{dd}/{time}{rand:6}", /* 上传保存路径,可以自定义保存路径和文件名格式 */ 而列出路径是这样的：
1 "imageManagerListPath": "/ueditor/jsp/upload/image/", /* 指定要列出图片的目录 */
这样上面保存图片时分日期保存的，然后参照列出路径列出的是目录，那肯定不行的，于是乎干掉imagePathFormat的日期，也就是{yyyy}{MM}{dd},变成这样：
1 "imagePathFormat": "/resources/ueditor/jsp/upload/image/{time}{rand:6}", /* 上传保存路径,可以自定义保存路径和文件名格式 */ 改好后还是不行，原因是fileManagerUrlPrefix，imageManagerUrlPrefix配置有问题，最后改成这样终于正常了：
1 /* 前后端通信相关的配置,注释只允许使用多行方式 */ 2 { 3 /* 上传图片配置项 */ 4 "imageActionName": "uploadimage", /* 执行上传图片的action名称 */ 5 "imageFieldName": "upfile", /* 提交的图片表单名称 */ 6 "imageMaxSize": 2048000, /* 上传大小限制，单位B */ 7 "imageAllowFiles": [".png", ".jpg", ".jpeg", ".gif", ".bmp"], /* 上传图片格式显示 */ 8 "imageCompressEnable": true, /* 是否压缩图片,默认是true */ 9 "imageCompressBorder": 1600, /* 图片压缩最长边限制 */10 "imageInsertAlign": "none", /* 插入的图片浮动方式 */11 "imageUrlPrefix": "/projectTest/", /* 图片访问路径前缀 */12 "imagePathFormat": "/resources/ueditor/jsp/upload/image/{time}{rand:6}", /* 上传保存路径,可以自定义保存路径和文件名格式 */13 /* {filename} 会替换成原文件名,配置这项需要注意中文乱码问题 */14 /* {rand:6} 会替换成随机数,后面的数字是随机数的位数 */15 /* {time} 会替换成时间戳 */16 /* {yyyy} 会替换成四位年份 */17 /* {yy} 会替换成两位年份 */18 /* {mm} 会替换成两位月份 */19 /* {dd} 会替换成两位日期 */20 /* {hh} 会替换成两位小时 */21 /* {ii} 会替换成两位分钟 */22 /* {ss} 会替换成两位秒 */23 /* 非法字符 \ : * ? " < > | */24 /* 具请体看线上文档: fex.baidu.com/ueditor/#use-format_upload_filename */25 26 /* 涂鸦图片上传配置项 */27 "scrawlActionName": "uploadscrawl", /* 执行上传涂鸦的action名称 */28 "scrawlFieldName": "upfile", /* 提交的图片表单名称 */29 "scrawlPathFormat": "/resources/ueditor/jsp/upload/image/{yyyy}{mm}{dd}/{time}{rand:6}", /* 上传保存路径,可以自定义保存路径和文件名格式 */30 "scrawlMaxSize": 2048000, /* 上传大小限制，单位B */31 "scrawlUrlPrefix": "/projectTest/", /* 图片访问路径前缀 */32 "scrawlInsertAlign": "none",33 34 /* 截图工具上传 */35 "snapscreenActionName": "uploadimage", /* 执行上传截图的action名称 */36 "snapscreenPathFormat": "/resources/ueditor/jsp/upload/image/{yyyy}{mm}{dd}/{time}{rand:6}", /* 上传保存路径,可以自定义保存路径和文件名格式 */37 "snapscreenUrlPrefix": "/projectTest/", /* 图片访问路径前缀 */38 "snapscreenInsertAlign": "none", /* 插入的图片浮动方式 */39 40 /* 抓取远程图片配置 */41 "catcherLocalDomain": ["127.0.0.1", "localhost", "img.baidu.com"],42 "catcherActionName": "catchimage", /* 执行抓取远程图片的action名称 */43 "catcherFieldName": "source", /* 提交的图片列表表单名称 */44 "catcherPathFormat": "/resources/ueditor/jsp/upload/image/{yyyy}{mm}{dd}/{time}{rand:6}", /* 上传保存路径,可以自定义保存路径和文件名格式 */45 "catcherUrlPrefix": "/projectTest/", /* 图片访问路径前缀 */46 "catcherMaxSize": 2048000, /* 上传大小限制，单位B */47 "catcherAllowFiles": [".png", ".jpg", ".jpeg", ".gif", ".bmp"], /* 抓取图片格式显示 */48 49 /* 上传视频配置 */50 "videoActionName": "uploadvideo", /* 执行上传视频的action名称 */51 "videoFieldName": "upfile", /* 提交的视频表单名称 */52 "videoPathFormat": "/ueditor/jsp/upload/video/{yyyy}{mm}{dd}/{time}{rand:6}", /* 上传保存路径,可以自定义保存路径和文件名格式 */53 "videoUrlPrefix": "/projectTest/", /* 视频访问路径前缀 */54 "videoMaxSize": 102400000, /* 上传大小限制，单位B，默认100MB */55 "videoAllowFiles": [56 ".flv", ".swf", ".mkv", ".avi", ".rm", ".rmvb", ".mpeg", ".mpg",57 ".ogg", ".ogv", ".mov", ".wmv", ".mp4", ".webm", ".mp3", ".wav", ".mid"], /* 上传视频格式显示 */58 59 /* 上传文件配置 */60 "fileActionName": "uploadfile", /* controller里,执行上传视频的action名称 */61 "fileFieldName": "upfile", /* 提交的文件表单名称 */62 "filePathFormat": "/ueditor/jsp/upload/file/{yyyy}{mm}{dd}/{time}{rand:6}", /* 上传保存路径,可以自定义保存路径和文件名格式 */63 "fileUrlPrefix": "/ringtione/", /* 文件访问路径前缀 */64 "fileMaxSize": 51200000, /* 上传大小限制，单位B，默认50MB */65 "fileAllowFiles": [66 ".png", ".jpg", ".jpeg", ".gif", ".bmp",67 ".flv", ".swf", ".mkv", ".avi", ".rm", ".rmvb", ".mpeg", ".mpg",68 ".ogg", ".ogv", ".mov", ".wmv", ".mp4", ".webm", ".mp3", ".wav", ".mid",69 ".rar", ".zip", ".tar", ".gz", ".7z", ".bz2", ".cab", ".iso",70 ".doc", ".docx", ".xls", ".xlsx", ".ppt", ".pptx", ".pdf", ".txt", ".md", ".xml"71 ], /* 上传文件格式显示 */72 73 /* 列出指定目录下的图片 */74 "imageManagerActionName": "listimage", /* 执行图片管理的action名称 */75 "imageManagerListPath": "/resources/ueditor/jsp/upload/image/", /* 指定要列出图片的目录 */76 "imageManagerListSize": 20, /* 每次列出文件数量 */77 "imageManagerUrlPrefix": "/projectTest/", /* 图片访问路径前缀 */78 "imageManagerInsertAlign": "none", /* 插入的图片浮动方式 */79 "imageManagerAllowFiles": [".png", ".jpg", ".jpeg", ".gif", ".bmp"], /* 列出的文件类型 */80 81 /* 列出指定目录下的文件 */82 "fileManagerActionName": "listfile", /* 执行文件管理的action名称 */83 "fileManagerListPath": "/resources/ueditor/jsp/upload/file/", /* 指定要列出文件的目录 */84 "fileManagerUrlPrefix": "/projectTest/", /* 文件访问路径前缀 */85 "fileManagerListSize": 20, /* 每次列出文件数量 */86 "fileManagerAllowFiles": [87 ".png", ".jpg", ".jpeg", ".gif", ".bmp",88 ".flv", ".swf", ".mkv", ".avi", ".rm", ".rmvb", ".mpeg", ".mpg",89 ".ogg", ".ogv", ".mov", ".wmv", ".mp4", ".webm", ".mp3", ".wav", ".mid",90 ".rar", ".zip", ".tar", ".gz", ".7z", ".bz2", ".cab", ".iso",91 ".doc", ".docx", ".xls", ".xlsx", ".ppt", ".pptx", ".pdf", ".txt", ".md", ".xml"92 ] /* 列出的文件类型 */93 94 } 没法上传文件，在把ConfigManager贴一下：
1 package com.baidu.ueditor; 2 3 import java.io.BufferedReader; 4 import java.io.File; 5 import java.io.FileInputStream; 6 import java.io.FileNotFoundException; 7 import java.io.IOException; 8 import java.io.InputStreamReader; 9 import java.io.UnsupportedEncodingException; 10 import java.util.HashMap; 11 import java.util.Map; 12 13 import javax.servlet.http.HttpServletRequest; 14 15 import org.json.JSONArray; 16 import org.json.JSONObject; 17 18 import com.baidu.ueditor.define.ActionMap; 19 20 /** 21 * 配置管理器 22 * 23 * @author hancong03@baidu.com 24 * 25 */ 26 public final class ConfigManager { 27 28 private final String rootPath; 29 private final String originalPath; 30 private static final String configFileName = "config.json"; 31 private String parentPath = null; 32 private JSONObject jsonConfig = null; 33 // 涂鸦上传filename定义 34 private final static String SCRAWL_FILE_NAME = "scrawl"; 35 // 远程图片抓取filename定义 36 private final static String REMOTE_FILE_NAME = "remote"; 37 38 /* 39 * 通过一个给定的路径构建一个配置管理器， 该管理器要求地址路径所在目录下必须存在config.properties文件 40 */ 41 private ConfigManager(String rootPath,String jsonConfigFilePath, String contextPath, String uri) 42 throws FileNotFoundException, IOException { 43 44 rootPath = rootPath.replace("\\", "/"); 45 46 this.rootPath = rootPath; 47 48 this.originalPath = this.rootPath + uri; 49 50 this.parentPath=new File(jsonConfigFilePath).getParent(); 51 52 this.initEnv(); 53 } 54 55 /** 56 * 配置管理器构造工厂 57 * 58 * @param rootPath 59 * 服务器根路径 60 * @param contextPath 61 * 服务器所在项目路径 62 * @param uri 63 * 当前访问的uri 64 * @param jsonConfigFilePath 65 * json配置文件的绝对路径，和controller.jsp在同一目录 66 * @return 配置管理器实例或者null 67 */ 68 public static ConfigManager getInstance(String rootPath,String jsonConfigFilePath, 69 String contextPath, String uri) { 70 71 try { 72 return new ConfigManager(rootPath,jsonConfigFilePath, contextPath, uri); 73 } catch (Exception e) { 74 return null; 75 } 76 77 } 78 79 // 验证配置文件加载是否正确 80 public boolean valid() { 81 return this.jsonConfig != null; 82 } 83 84 public JSONObject getAllConfig() { 85 86 return this.jsonConfig; 87 88 } 89 90 public Map getConfig(int type) { 91 92 Map conf = new HashMap (); 93 String savePath = null; 94 95 switch (type) { 96 97 case ActionMap.UPLOAD_FILE: 98 conf.put("isBase64", "false"); 99 conf.put("maxSize", this.jsonConfig.getLong("fileMaxSize"));100 conf.put("allowFiles", this.getArray("fileAllowFiles"));101 conf.put("fieldName", this.jsonConfig.getString("fileFieldName"));102 savePath = this.jsonConfig.getString("filePathFormat");103 break;104 105 case ActionMap.UPLOAD_IMAGE:106 conf.put("isBase64", "false");107 conf.put("maxSize", this.jsonConfig.getLong("imageMaxSize"));108 conf.put("allowFiles", this.getArray("imageAllowFiles"));109 conf.put("fieldName", this.jsonConfig.getString("imageFieldName"));110 savePath = this.jsonConfig.getString("imagePathFormat");111 break;112 113 case ActionMap.UPLOAD_VIDEO:114 conf.put("maxSize", this.jsonConfig.getLong("videoMaxSize"));115 conf.put("allowFiles", this.getArray("videoAllowFiles"));116 conf.put("fieldName", this.jsonConfig.getString("videoFieldName"));117 savePath = this.jsonConfig.getString("videoPathFormat");118 break;119 120 case ActionMap.UPLOAD_SCRAWL:121 conf.put("filename", ConfigManager.SCRAWL_FILE_NAME);122 conf.put("maxSize", this.jsonConfig.getLong("scrawlMaxSize"));123 conf.put("fieldName", this.jsonConfig.getString("scrawlFieldName"));124 conf.put("isBase64", "true");125 savePath = this.jsonConfig.getString("scrawlPathFormat");126 break;127 128 case ActionMap.CATCH_IMAGE:129 conf.put("filename", ConfigManager.REMOTE_FILE_NAME);130 conf.put("filter", this.getArray("catcherLocalDomain"));131 conf.put("maxSize", this.jsonConfig.getLong("catcherMaxSize"));132 conf.put("allowFiles", this.getArray("catcherAllowFiles"));133 conf.put("fieldName", this.jsonConfig.getString("catcherFieldName")134 + "[]");135 savePath = this.jsonConfig.getString("catcherPathFormat");136 break;137 138 case ActionMap.LIST_IMAGE:139 conf.put("allowFiles", this.getArray("imageManagerAllowFiles"));140 conf.put("dir", this.jsonConfig.getString("imageManagerListPath"));141 conf.put("count", this.jsonConfig.getInt("imageManagerListSize"));142 break;143 144 case ActionMap.LIST_FILE:145 conf.put("allowFiles", this.getArray("fileManagerAllowFiles"));146 conf.put("dir", this.jsonConfig.getString("fileManagerListPath"));147 conf.put("count", this.jsonConfig.getInt("fileManagerListSize"));148 break;149 150 }151 152 conf.put("savePath", savePath);153 conf.put("rootPath", this.rootPath);154 155 return conf;156 157 }158 159 /**160 * Get rootPath from request,if not,find it from conf map.161 * 162 * @param request163 * @param conf164 * @return165 * @author Ternence166 * @create 2015年1月31日167 */168 public static String getRootPath(HttpServletRequest request,169 Map conf) {170 Object rootPath = request.getAttribute("rootPath");171 if (rootPath != null) {172 return rootPath + "" + File.separatorChar;173 } else {174 return conf.get("rootPath") + "";175 }176 }177 178 private void initEnv() throws FileNotFoundException, IOException {179 180 File file = new File(this.originalPath);181 182 if (!file.isAbsolute()) {183 file = new File(file.getAbsolutePath());184 }185 186 if(this.parentPath==null)187 this.parentPath = file.getParent();188 189 String configContent = this.readFile(this.getConfigPath());190 191 try {192 JSONObject jsonConfig = new JSONObject(configContent);193 this.jsonConfig = jsonConfig;194 } catch (Exception e) {195 this.jsonConfig = null;196 }197 198 }199 200 private String getConfigPath() {201 String path = this.getClass().getResource("/").getPath()202 + ConfigManager.configFileName;203 if (new File(path).exists()) {204 return path;205 } else {206 return this.parentPath + File.separator207 + ConfigManager.configFileName;208 }209 }210 211 private String[] getArray(String key) {212 213 JSONArray jsonArray = this.jsonConfig.getJSONArray(key);214 String[] result = new String[jsonArray.length()];215 216 for (int i = 0, len = jsonArray.length(); i < len; i++) {217 result[i] = jsonArray.getString(i);218 }219 220 return result;221 222 }223 224 private String readFile(String path) throws IOException {225 226 StringBuilder builder = new StringBuilder();227 228 try {229 230 InputStreamReader reader = new InputStreamReader(231 new FileInputStream(path), "UTF-8");232 BufferedReader bfReader = new BufferedReader(reader);233 234 String tmpContent = null;235 236 while ((tmpContent = bfReader.readLine()) != null) {237 builder.append(tmpContent);238 }239 240 bfReader.close();241 242 } catch (UnsupportedEncodingException e) {243 // 忽略244 }245 246 return this.filter(builder.toString());247 248 }249 250 // 过滤输入字符串, 剔除多行注释以及替换掉反斜杠251 private String filter(String input) {252 253 return input.replaceAll("/\\*[\\s\\S]*?\\*/", "");254 255 }256 257 }
最后在给个github ue的url：https://github.com/fex-team/ueditor，将ActionEnter和ConfigManager替换并导出的jar替换官方的jar即可按照图中所述的方式使用了。