springmvc的上传功能

1springmvc 的上传功能，比较简单。记录下
2
3```
4 @RequestMapping("doUpload")
5     public String UploadFile(HttpServletRequest request,
6     @RequestParam(value = "file", required = false)MultipartFile multipartFile){
7     //获取上传路径
8      String savePath = request.getSession().getServletContext().getRealPath("upload");
9        System.out.println("获取文件名 " + multipartFile.getOriginalFilename());
10        //获取文件名
11        String filename = multipartFile.getOriginalFilename();
12        if (StringUtils.isEmpty(filename)){
13            return  "err.html";
14        }else{
15            //获取完整路径名，包含文件名
16            //  String path = savePath + File.separator + filename;
17            //创建上传存放文件夹
18            File upFile = new File(savePath,filename);
19            //    System.out.println("path:" + path + "  ");
20            //  File file = new File(savePath);
21            //判断上传文件是否存在
22            if (!upFile.exists() && !upFile.isDirectory()){
23                System.out.println("目录不存在，咱创建个");
24                // file.mkdir();
25                upFile.mkdirs();
26            }
27            try {
28            //上传
29                multipartFile.transferTo(upFile);
30                upFile.delete();
31            } catch (IOException e) {
32                e.printStackTrace();
33            }
34            return  "index.html";
35        }