springMVC实现上传文件功能

1.spring_fileupload.xml配置文件如下:

Xml代码  

1. <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  
2.     <!--<property name="maxUploadSize" value="10485760"></property>-->  
3. </bean>  

 

2.FileUploadAction控制器如下:

Java代码  

1.        @RequestMapping(params = "method=up", method = RequestMethod.POST)  
2. @ResponseBody  
3. public Map<String, String> uploadSolver(@RequestParam MultipartHttpServletRequest request {  
4.     Map<String,String> info = new HashMap<String,String>();  
5.     MultipartFile patch = request.getFile("file");  
6.     if (!patch.isEmpty()) {  
7.         try {  
8.             String fileName = patch.getOriginalFilename();  
9.   
10.             /** 
11.              * 获取文件后缀 
12.              */  
13.             System.out.println(fileName);  
14.             String suffix = fileName.substring(fileName.lastIndexOf("."));  
15.   
16.             /** 
17.              * 判断上传的文件格式是否正确 
18.              */  
19.             if ((".zip.rar.gz.tar.bz2.txt".indexOf(suffix.toLowerCase()) != -1)) {  
20.                 Integer fileSize = (int) patch.getSize() / 1024;  
21.   
22.                 /** 
23.                  * 如果文件小于10M，则上传文件，否则提示用户不能超过10M 
24.                  */  
25.                 if (fileSize <= 10240) {  
26.   
27.                     String uploadPath = ClassLoaderUtil.getProperties("uploadFile.properties").getProperty("filePath");  
28.                     System.out.println(uploadPath);  
29.                     File filePath = new File(request.getSession()  
30.                             .getServletContext().getRealPath(uploadPath));  
31.                     System.out.println(filePath.getAbsolutePath());  
32.                     /** 
33.                      * 判读存储文件路是否存在，不存在则创建 
34.                      */  
35.                     if (! filePath.exists()) {  
36.                         filePath.mkdirs();  
37.                         System.out.println("上传文件路径不存在，创建成功！");  
38.                     }  
39.                     /** 
40.                      * 文件开始上传到服务器上 
41.                      */  
42.                     patch.transferTo(new File(filePath.getAbsolutePath()+"\\"+fileName));  
43.                     info.put("success", "true");  
44.                     info.put("msg", "上传成功！");  
45.   
46.                 } else {  
47.                     System.out.println("上传的文件太大，文件大小不能超过10M");  
48.                     info.put("success","false");  
49.                     info.put("msg", "上传的文件太大，文件大小不能超过10M");  
50.                 }  
51.             } else {  
52.                 System.out.println("上传的文件格式不支持");  
53.                 info.put("success","false");  
54.                 info.put("msg", "上传的文件格式不支持");  
55.                   
56.             }  
57.         } catch (IOException e) {  
58.             e.printStackTrace();  
59.             System.out.println("系统异常");  
60.             info.put("success","false");  
61.             info.put("msg", "系统异常");  
62.         }  
63.     }  
64.     return info;  
65. }  

 3.前端表单使用Extjs 如下：

Js代码  

1. Ext.onReady(function (){  
2.       
3.     var addFileTextField = new Ext.form.TextField({  
4.         name:'file',  
5.         allowBlank:false,  
6.                 //使用HTML中的filetext  
7.                 inputType:'file'  
8.               
9.     });  
10.       
11.       
12.     var addFileFormPanel = new Ext.form.FormPanel({  
13.          autoDestory:true,  
14.                  fileUpload:true,  
15.          frame:true,  
16.          width:300,  
17.          autoHeight:true,  
18.          labelAlign:'right',  
19.          labelWidth:60,  
20.          defaultType:'textfield',  
21.          defaults:{width:200,allowBlank:false},  
22.            
23.          items: [addFileTextField]  
24.     });  
25.       
26.       
27.     var addFileWindow = new Ext.Window({  
28.             id : "addFileWindow",  
29.             title : "上传文件",  
30.             width : 640,  
31.             height : 200,  
32.             resizable : false,  
33.             modal : true,  
34.             maximizable : false,  
35.             closeAction : "hide",  
36.             constrain : true,  
37.             layout : "vbox",  
38.             animateTarget:'target',  
39.             layoutConfig:{  
40.                 align: "stretch"  
41.             },  
42.             items : [addFileFormPanel],  
43.             buttons:[  
44.                 {text:'上传',handler:function (){  
45.                         if(! addFileFormPanel.getForm().isValid()) {  
46.                             return false;  
47.                         }  
48.                         //上传  
49.                         addFileFormPanel.getForm().submit({  
50.                             url:'uploadFile.do?method=up',  
51.                             waitMsg: '正在上传...',  
52.                             success: function (form,response){  
53.                                 Ext.Msg.alert('success',response.result.msg);  
54.                             },  
55.                             failure: function (form,response){  
56.                                 Ext.Msg.alert('error',response.result.msg);  
57.                             }  
58.                         });  
59.                     }  
60.                 }  
61.             ]  
62.     });  
63. });