1.所需额外jar包
| commons-fileupload-1.2.2.jar commons-io-2.0.1.jar --------------------------- commons-logging-1.1.1.jar jstl.jar spring-aop-4.1.6.RELEASE.jar spring-beans-4.1.6.RELEASE.jar spring-context-4.1.6.RELEASE.jar spring-core-4.1.6.RELEASE.jar spring-expression-4.1.6.RELEASE.jar spring-tx-4.1.6.RELEASE.jar spring-web-4.1.6.RELEASE.jar spring-webmvc-4.1.6.RELEASE.jar standard.jar |
2.jsp页面
| <body> <form action="hello.do" method="post" enctype="multipart/form-data"> file:<br> <input type="file" name="file"/><br> <input type="file" name="file"/><br> <input type="file" name="file"/><br> <input type="submit" value="submit"/><br> </form> </body> |
3.Springmvc配置文件,添加文件上传的配置，记不住，用到就复制
| <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <!-- 设置编码格式 --> <property name="defaultEncoding" value="utf-8"/> <!-- 设置文件大小 --> <property name="maxUploadSize" value="1048576000"/> <!-- 设置缓冲区大小 --> <property name="maxInMemorySize" value="40960"/> </bean> |
4.Controller代码
| @Controller public class HelloController { @SuppressWarnings("deprecation") @RequestMapping("hello") <!--还必须设置别名,页面的name="file"对应的Controller中的数组，是CommonsMultipartFile[]--> public String hello(@RequestParam("file") CommonsMultipartFile[] file, HttpServletRequest req) throws IOException { //HttpServletRequest用于拿到fileUpload文件夹的在服务器中的路径 String path = req.getRealPath("/fileUpload");InputStream is = null; OutputStream os = null; File uploadFile = null; for (int i = 0; i < file.length; i++) { is = file[i].getInputStream();//既然能让Controller接收到文件，那么这个文件一定有输入流为它服务. uploadFile = new File(path, file[i].getOriginalFilename()); os = new FileOutputStream(uploadFile); System.out.println(uploadFile.getPath()); int len = 0; byte[] buf = new byte[1024]; while ((len = is.read(buf)) != -1) { os.write(buf, 0, len); } is.close(); os.close(); } return "/success.jsp"; } } |