改造百度UMeditor(UEditor-min)富文本編輯器的圖片上傳功能

最近項目須要新增一個發佈文章的模塊，用的是百度的Ueditor富文本編輯器。

公司用的是阿里雲的圖片服務器，須要直接把文章中圖片上傳到服務器上，可是這個編輯器的上傳圖片是直接上傳到Tomcat的根目錄。

不能知足要求，嘗試改造了一下上傳圖片的功能。

下載下來的編輯器直接導入項目webapp目錄下

由於用的是Spring框架，基本已經包含了ueditor須要的幾個jar包，因此不須要導入了。

須要注意的是，這個ueditor-1.1.1.jar的這個jar包，其實不須要導入，由於這個包裏面就只有一個文件Uploader.java

而在ueditor的jsp目錄下已經有了Uploader.java文件，因此直接把這個文件copy到工做區中，訪問這個文件就能夠了。

在調用的地方改一下目錄

把

<%@ page import="com.baidu.ueditor.um.Uploader" %>

改爲

<%@ page import="com.myproject.upload.Uploader"%>

以下圖：

而後關鍵就是要改造一下Uploader.java這個類。

原有上傳代碼以下：

 1 public void upload() throws Exception {
 2         boolean isMultipart = ServletFileUpload.isMultipartContent(this.request);
 3         if (!isMultipart) {
 4             this.state = this.errorInfo.get("NOFILE");
 5             return;
 6         }
 7         DiskFileItemFactory dff = new DiskFileItemFactory();
 8         String savePath = this.getFolder(this.savePath);
 9         dff.setRepository(new File(savePath));
10         try {
11             ServletFileUpload sfu = new ServletFileUpload(dff);
12             sfu.setSizeMax(this.maxSize * 1024);
13             sfu.setHeaderEncoding("utf-8");
14             FileItemIterator fii = sfu.getItemIterator(this.request);
15             while (fii.hasNext()) {
16                 FileItemStream fis = fii.next();
17                 if (!fis.isFormField()) {
18                     this.originalName = fis.getName().substring(fis.getName().lastIndexOf(System.getProperty("file.separator")) + 1);
19                     if (!this.checkFileType(this.originalName)) {
20                         this.state = this.errorInfo.get("TYPE");
21                         continue;
22                     }
23                     this.fileName = this.getName(this.originalName);
24                     this.type = this.getFileExt(this.fileName);
25                     // 獲取了存放文件的相對路徑
26                     this.url = savePath + "/" + this.fileName;
27                     BufferedInputStream in = new BufferedInputStream(fis.openStream());
28                     File file = new File(this.getPhysicalPath(this.url));
29                     FileOutputStream out = new FileOutputStream( file );
30                     BufferedOutputStream output = new BufferedOutputStream(out);
31                     // 這裏直接在服務器根目錄生成了圖片文件
32                     Streams.copy(in, output, true);
33                     this.state=this.errorInfo.get("SUCCESS");
34                     this.size = file.length();
35                     //UE中只會處理單張上傳，完成後即退出
36                     break;
37                 } else {
38                     String fname = fis.getFieldName();
39                     //只處理title，其他表單請自行處理
40                     if(!fname.equals("pictitle")){
41                         continue;
42                     }
43                     BufferedInputStream in = new BufferedInputStream(fis.openStream());
44                     BufferedReader reader = new BufferedReader(new InputStreamReader(in));
45                     StringBuffer result = new StringBuffer();  
46                     while (reader.ready()) {  
47                         result.append((char)reader.read());  
48                     }
49                     this.title = new String(result.toString().getBytes(),"utf-8");
50                     reader.close();  
51                     
52                 }
53             }
54         } catch (SizeLimitExceededException e) {
55             this.state = this.errorInfo.get("SIZE");
56         } catch (InvalidContentTypeException e) {
57             this.state = this.errorInfo.get("ENTYPE");
58         } catch (FileUploadException e) {
59             this.state = this.errorInfo.get("REQUEST");
60         } catch (Exception e) {
61             this.state = this.errorInfo.get("UNKNOWN");
62         }
63     }

改造後以下：

 1     // 改造後的代碼，百度原有代碼註釋了
 2     public void upload() throws Exception
 3     {
 4         boolean isMultipart = ServletFileUpload.isMultipartContent(this.request);
 5         if (!isMultipart)
 6         {
 7             this.state = this.errorInfo.get("NOFILE");
 8             return;
 9         }
10         try
11         {
12             MultipartResolver resolver = new CommonsMultipartResolver(
13                     this.request.getSession().getServletContext());
14             MultipartHttpServletRequest multipartRequest = resolver.resolveMultipart(request);
15             CommonsMultipartFile orginalFile = (CommonsMultipartFile) multipartRequest.getFile("upfile");
16             
17             this.originalName = orginalFile.getOriginalFilename();
18             if (!this.checkFileType(this.originalName))
19             {
20                 this.state = this.errorInfo.get("TYPE");
21                 return;
22             }
23             this.type = this.getFileExt(this.originalName);
24             this.size = orginalFile.getSize();
25             
26             // 這裏是公司內部上傳到阿里雲服務器的工具類
27             String key = ImgUtils.uploadImage("xxxx",
28                     ImageKind.Picture,
29                     orginalFile.getInputStream(),
30                     this.size);
31             
32             this.fileName = key;
33             this.url = "http://xxx.aliyuncs.com/" + key;
34             this.state = this.errorInfo.get("SUCCESS");
35         }
36         catch (Exception e)
37         {
38             this.state = this.errorInfo.get("UNKNOWN");
39         }
40     }

用到了Spring的這兩個文件

import org.springframework.web.multipart.commons.CommonsMultipartFile;
import org.springframework.web.multipart.commons.CommonsMultipartResolver;

而後編輯器頁面上顯示的時候，img的src目錄須要改一下

 1         callback: function (editor, $w, url, state) {
 2 
 3             if (state == "SUCCESS") {
 4                 //顯示圖片計數+1
 5                 Upload.showCount++;
 6                 var $img = $("<img src='" + editor.options.imagePath + url + "' class='edui-image-pic' />"),  7                 var $img = $("<img src='" + url + "' class='edui-image-pic' />"),  8                     $item = $("<div class='edui-image-item edui-image-upload-item'><div class='edui-image-close'></div></div>").append($img);
 9 
10                 if ($(".edui-image-upload2", $w).length < 1) {
11                     $(".edui-image-content", $w).append($item);
12 
13                     Upload.render(".edui-image-content", 2)
14                         .config(".edui-image-upload2");
15                 } else {
16                     $(".edui-image-upload2", $w).before($item).show();
17                 }
18 
19                 $img.on("load", function () {
20                     Base.scale(this, 120);
21                     Base.close($(this));
22                     $(".edui-image-content", $w).focus();
23                 });
24 
25             } else {
26                 currentDialog.showTip( state );
27                 window.setTimeout( function () {
28 
29                     currentDialog.hideTip();
30 
31                 }, 3000 );
32             }
33 
34             Upload.toggleMask();
35 
36         }

 大功告成。