<tr>        <td width="50%" align="left">软件上传：        <input  type="file" size="20" class="form-control" name="file" required></td>　　 </tr>

1 <form action="software_add" method="post" class="form" id="form"  enctype="multipart/form-data">2 ...3 </form>

 1 try {        2              is = new FileInputStream(file);    3              switch (software.getType()) { 4                 case 1: 5                      os = new FileOutputStream(new File("D:\upload\program\", fileFileName));     6                     break; 7                 case 2: 8                      os = new FileOutputStream(new File("D:\\upload\\net\\", fileFileName));    //转义不转义均可 9                     break;10                 case 3:11                      os = new FileOutputStream(new File("D:\\upload\\app\\", fileFileName));    12                     break;13                 default:14                     break;15                 }   16             System.out.println("fileFileName: " + fileFileName);17             // 因为file是存放在临时文件夹的文件，我们可以将其文件名和文件路径打印出来，看和之前的fileFileName是否相同18             System.out.println("file: " + file.getName());19             System.out.println("file: " + file.getPath());   20             path = file.getPath();21             byte[] buffer = new byte[500];22             int length = 0;23             24             while(-1 != (length = is.read(buffer, 0, buffer.length)))25             {26                 os.write(buffer);27             }28             29            30             31         } catch (Exception e) {32             // TODO: handle exception33              System.out.println("文件上传失败");34               e.printStackTrace();35         }36         37         finally {38              39               try {40                 is.close();41                 os.close();42             } catch (IOException e) {43                 // TODO Auto-generated catch block44                 e.printStackTrace();45             }46         }

<struts>
<constant name="struts.multipart.maxSize" value="10701096"/>
...
</struts>