SpringMVC文件上传基础

maven依赖

1. <!--文件上传所需-->
2. <dependency>
3. <groupId>commons-fileupload</groupId>
4. <artifactId>commons-fileupload</artifactId>
5. <version>1.3.1</version>
6. </dependency>
7. <dependency>
8. <groupId>commons-io</groupId>
9. <artifactId>commons-io</artifactId>
10. <version>2.5</version>
11. </dependency>

后端

1. /*
2. *采用spring提供的上传文件的方法
3. */
4. @RequestMapping("springUpload")
5. public String springUpload(HttpServletRequest request) throws IllegalStateException, IOException
6. {
7. long startTime=System.currentTimeMillis();
8. //将当前上下文初始化给 CommonsMutipartResolver （多部分解析器）
9. CommonsMultipartResolver multipartResolver=new CommonsMultipartResolver(
10. request.getSession().getServletContext());
11. //检查form中是否有enctype="multipart/form-data"
12. if(multipartResolver.isMultipart(request))
13. {
14. //将request变成多部分request
15. MultipartHttpServletRequest multiRequest=(MultipartHttpServletRequest)request;
16. //获取multiRequest 中所有的文件名
17. Iterator iter=multiRequest.getFileNames();
19. while(iter.hasNext())
20. {
21. //一次遍历所有文件
22. MultipartFile file=multiRequest.getFile(iter.next().toString());
23. if(file!=null)
24. {
25. String path="E:/springUpload"+file.getOriginalFilename();
26. //上传
27. file.transferTo(new File(path));
28. }
30. }
32. }
33. long endTime=System.currentTimeMillis();
34. System.out.println("方法三的运行时间："+String.valueOf(endTime-startTime)+"ms");
35. return "/success";
36. }

前端：

1. <form name="Form2" action="/SpringMVC006/springUpload" method="post" enctype="multipart/form-data">
2. <h1>使用spring mvc提供的类的方法上传文件</h1>
3. <input type="file" name="file">
4. <input type="submit" value="upload"/>
5. </form>