2. 修改maven依赖
1 <dependencies>
2 <dependency>
3 <groupId>org.directwebremoting</groupId>
4 <artifactId>dwr</artifactId>
5 <version>3.0.1-RELEASE</version>
6 </dependency>
7 <dependency>
8 <groupId>commons-logging</groupId>
9 <artifactId>commons-logging</artifactId>
10 <version>1.2</version>
11 </dependency>
12 <dependency>
13 <groupId>commons-fileupload</groupId>
14 <artifactId>commons-fileupload</artifactId>
15 <version>1.3.1</version>
16 </dependency>
17 <dependency>
18 <groupId>commons-io</groupId>
19 <artifactId>commons-io</artifactId>
20 <version>2.4</version>
21 </dependency>
22 </dependencies>
3. 编写jsp页面
1 <html>
2 <head>
3 <base href="<%=basePath%>">
4
5 <title>dwr</title>
6 <script type='text/javascript' src='dwr/engine.js'></script>
7 <script type='text/javascript' src='dwr/util.js'></script>
8 <script type='text/javascript' src='dwr/interface/CoreServlet.js'></script>
9 </head>
10 <body>
11
12 <input type="file" name="file" />
13 <button onclick="upload();">上传</button>
14
15 </body>
16 <script type="text/javascript">
17 function upload() {
18 var file = dwr.util.getValue("file");
19 CoreServlet.uploadFile(file, file.value, function(data) {
20 if (data == true) {
21 alert("上传成功！");
22 }
23 });
24 }
25 </script>
26 </html>
4. 编写后台代码：
1 public class CoreServlet {
2
3 public boolean uploadFile(InputStream is, String path) throws Exception {
4 String fileName = path.substring(path.lastIndexOf("\") + 1, path.length());
5 FileOutputStream fos = new FileOutputStream(new File("E://" + fileName));
6 byte[] b = new byte[1024];
7 while ((is.read(b)) != -1) {
8 fos.write(b);
9 }
10 is.close();
11 fos.close();
12 return true;
13 }
14
15 }