DWR第五篇之文件上传

1. 在第一篇架构基础上进行

2. 修改maven依赖

 <dependencies>

     <dependency>

         <groupId>org.directwebremoting</groupId>

     　　<artifactId>dwr</artifactId>

     　　<version>3.0.1-RELEASE</version>

     </dependency>

     <dependency>

     　　<groupId>commons-logging</groupId>

     　　<artifactId>commons-logging</artifactId>

     　　<version>1.2</version>

     </dependency>

     <dependency>

         <groupId>commons-fileupload</groupId>

         <artifactId>commons-fileupload</artifactId>

         <version>1.3.1</version>

     </dependency>

     <dependency>

         <groupId>commons-io</groupId>

         <artifactId>commons-io</artifactId>

         <version>2.4</version>

     </dependency>

 </dependencies>

3. 编写jsp页面

 <html>

 <head>

 <base href="<%=basePath%>">

 <title>dwr</title>

 <script type='text/javascript' src='dwr/engine.js'></script>

 <script type='text/javascript' src='dwr/util.js'></script>

 <script type='text/javascript' src='dwr/interface/CoreServlet.js'></script>

 </head>

 <body>

     <input type="file" name="file" />

     <button onclick="upload();">上传</button>

 </body>

 <script type="text/javascript">

     function upload() {

         var file = dwr.util.getValue("file");

         CoreServlet.uploadFile(file, file.value, function(data) {

             if (data == true) {

                 alert("上传成功！");

             }

         });

     }

 </script>

 </html>

4. 编写后台代码：

 public class CoreServlet {

     public boolean uploadFile(InputStream is, String path) throws Exception {

         String fileName = path.substring(path.lastIndexOf("\\") + 1, path.length());

         FileOutputStream fos = new FileOutputStream(new File("E://" + fileName));

         byte[] b = new byte[1024];

         while ((is.read(b)) != -1) {

             fos.write(b);

         }

         is.close();

         fos.close();

         return true;

     }

 }

巴特西

DWR第五篇之文件上传

1. 在第一篇架构基础上进行

2. 修改maven依赖

3. 编写jsp页面

4. 编写后台代码：

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