文件的上传

//文件的上传

//在application.properties中需要配置的

#默认支持文件上传
spring.http.multipart.enabled=true
spring.http.multipart.file-size-threshold=0
# 最大支持文件大小
spring.http.multipart.max-file-size=1Mb
# 最大支持请求大小
spring.http.multipart.max-request-size=10Mb

//写在controller中的

 @RequestMapping(value = "/insertUser", method = RequestMethod.POST)
    @ResponseBody
    public String userInsert(User user, @RequestParam MultipartFile headImg) {
        String name = headImg.getOriginalFilename();
        System.out.println("文件名称为：" + name);
        //1.确认源和目标：headImg---->/images/name
        // 2.选择流：字节缓冲输出流
        FileOutputStream fos = null;
        BufferedOutputStream bos = null;
        try {
            fos = new FileOutputStream("E:/images/" + name);
            bos = new BufferedOutputStream(fos);
            //3.执行读写操作
            bos.write(headImg.getBytes());
            bos.flush();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            //4.关闭流
            try {
                bos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return "success";
    }