MultipartFile 上传图片

调用后台接口，保存本地到nginx文件夹，使用通用返回对象返回nginx图片地址

@PostMapping("/upload")
public ResponseResult<String> upLoad(@RequestParam("file") MultipartFile file) throws IOException {
    ResponseResult<String> result = new ResponseResult<>();

    if (file.isEmpty()) {
        result.setCode(202);
        result.setMsg("上传失败");
    }

    String filename = file.getOriginalFilename();
    String path="D:/nginx-1.21.6/html/user_img/";

    try {
        file.transferTo(new File(path+filename));
        String url = "http://localhost:80/user_img/" + filename;
        result.setCode(200);
        result.setMsg("上传成功");
        result.setData(url);
    }catch (RuntimeException e){
        e.printStackTrace();
        result.setCode(201);
        result.setMsg("系统错误");
    }
    return result;
}