//POST方法
- (nullable NSURLSessionDataTask *)POST:(NSString *)URLString
        parameters:(nullable id)parameters
    constructingBodyWithBlock:(nullable void (^)(id <AFMultipartFormData> formData))block
        progress:(nullable void (^)(NSProgress *uploadProgress)) uploadProgress
        success:(nullable void (^)(NSURLSessionDataTask *task, id _Nullable responseObject))success
        failure:(nullable void (^)(NSURLSessionDataTask * _Nullable task, NSError *error))failure;

//PUT方法
- (nullable NSURLSessionDataTask *)PUT:(NSString *)URLString
     parameters:(nullable id)parameters
      success:(nullable void (^)(NSURLSessionDataTask *task, id _Nullable responseObject))success
      failure:(nullable void (^)(NSURLSessionDataTask * _Nullable task, NSError *error))failure;

- (void)uploadData:(NSData *)data uploadUrl:(NSString *)uploadUrl { 
 ASIHTTPRequest * fileUpRequest = [ASIHTTPRequest requestWithURL:[NSURL URLWithString:uploadUrl]];
 fileUpRequest.delegate = self;
 //设置请求超时时间为60秒
 [fileUpRequest setTimeOutSeconds:60.f];
 //设置请求超时时间后再次尝试请求的次数
 [fileUpRequest setNumberOfTimesToRetryOnTimeout:2];
 //将data拼接进去
 [fileUpRequest appendPostData:data];
 //设置请求方式为PUT
 [fileUpRequest setRequestMethod:@"PUT"];
 //设置上传失败的回调方法
 [fileUpRequest setDidFailSelector:@selector(uploadFailed:)];
 //设置上传成功的回调方法
 [fileUpRequest setDidFinishSelector:@selector(uploadFinished:)];
 //显示精确的上传进度
 fileUpRequest.showAccurateProgress = YES;
 //开始异步请求
 [fileUpRequest startAsynchronous];
}