StringMVC5更改响应Content-type

参考
spring mvc content-type设置规则
RequestMapping中produces属性作用

• 在控制器的@RequestMapping的属性中添加produces = {“application/json;charset=UTF-8”}
• 给控制器添加@ResponseBody

@RequestMapping(value = "/fileupload" , produces = {"application/json;charset=UTF-8"})
@ResponseBody
public String fileupload(MultipartFile file){
    System.out.println(file.getName());
    return "上传成功";
}