from表单上传图片

　　1.要实现上传图片在form表单必须加上 <form enctype="multipart/form-data"> 

　　2.需要导的两个包　　commons-fileupload-xx.jar      commons-io-xx.jar

　　包链接：http://pan.baidu.com/s/1jIJ16KY 密码：5clh

以下是servlet中的代码

 1 @Override
 2     protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {        
 3         req.setCharacterEncoding("utf-8");
 4         //判断是否是上传
 5         boolean isMultipart = ServletFileUpload.isMultipartContent(req);
 6         if(isMultipart) {
 7             
 8             DiskFileItemFactory factory = new DiskFileItemFactory();
 9             //创建request处理器
10             ServletFileUpload upload = new ServletFileUpload(factory);
11             try {
12                 List<FileItem> list = upload.parseRequest(req);
13                 for (FileItem fileItem : list) {
14                     if(fileItem.isFormField()) {
15                         //非上传的普通属性
16                         System.out.println(fileItem.getString());
17                     }else {
18                         //上传处理
19                         String filedName = fileItem.getFieldName();
20                         System.out.println(filedName);
21                         
22                         String name = fileItem.getName();
23                         System.out.println(name);
24                         //要上传到的路径
25                         File file = new File("E://"+name);
26                         fileItem.write(file);
27                     }
28                 }
29                 
30             
31             } catch (Exception e) {
32                 e.printStackTrace();
33             }
34 
35         }
36         
37         
38     }

 

posted @ 2017-10-30 18:52  呆木头2号  阅读(1151)  评论(0)    收藏  举报