Apache FileUpload实现文件上传

         <form name="form1" action="${ctx}/ware/WaretServlet?action=modify_ware" method="post" class="niceform" enctype="multipart/form-data">
         <input type="hidden" name="WareID" value="${ware.wareID}"/>
                <fieldset>
                    <dl>
                        <dt><label for="email">商品名称:</label></dt>
                        <dd><input type="text" name="WareName" value="${ware.wareName}" id="" size="54" /></dd>
                    </dl>                              
                    <dl>
                        <dt><label for="upload">上传图片:</label></dt>
                        <dd><input type="file" name="PicUrl" id="upload" value="${ware.picUrl}"/></dd>
                    </dl>                
                     <dl class="submit">
                    <input type="submit" name="submit" id="submit" value="修改" />
                    <input type="reset" name="submit" id="submit" value="重填" />
                     </dl> 
                                  
                </fieldset>
                
         </form>

 1     private void modify_ware(HttpServletRequest request,
 2             HttpServletResponse response)  throws ServletException, IOException {
 3         DiskFileItemFactory f = new DiskFileItemFactory();//磁盘对象
 4         f.setRepository(new File("d:/a"));//设置临时目录
 5         f.setSizeThreshold(1024*8);//8k的缓冲区,文件大于8K则保存到临时目录
 6         ServletFileUpload upload = new ServletFileUpload(f);//声明解析request的对象
 7         upload.setHeaderEncoding("utf-8");//处理中文
 8         upload.setSizeMax(1024*1024*10);//设置单个文件最大为10M
 9         upload.setSizeMax(1024*1024*20);//最多能上传20M
10         String path = getServletContext().getRealPath("/imgs");//获取文件要保存的目录
11         try 
12         {
13             List<String> paramli = new ArrayList<String>();
14             @SuppressWarnings("unchecked")
15             List<FileItem> list = upload.parseRequest(request);// 解析
16             for (FileItem ff : list) 
17             {
18                 if (ff.isFormField()) 
19                 {
20                     String ds = ff.getString("UTF-8");//处理中文
21                     //System.err.println("说明是:" + ds);
22                     paramli.add(ds);
23                 } 
24                 else 
25                 {
26                     String ss = ff.getName();
27                     System.out.println(ss);
28                     paramli.add(ss);
29                     //request.setAttribute("filename",ss);
30                     ss = ss.substring(ss.lastIndexOf("\") + 1);//解析文件名
31                     ////直接使用commons.io.FileUtils
32                     FileUtils.copyInputStreamToFile(ff.getInputStream(),new File(path + "/" + ss));
33                 }
34             }
35             for(String s:paramli)
36             {
37                 System.out.print(s+" ");
38             }
39                     } 
40         catch (Exception e) 
41         {
42             e.printStackTrace();
43         }
44     }