AFNetworking

Question

我有这个代码：

AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

NSDictionary *parameters = @{@"client_id": some index};

[manager GET:@"some address"
  parameters:parameters
    progress:^(NSProgress * _Nonnull progress) {
        NSLog(@"In progress: %d%%", (int)([progress fractionCompleted] * 100 ));
    }
     success:^(NSURLSessionTask *task, id responseObject) {
         [self processData:[responseObject objectForKey:@"orders"]];
     }
     failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
         NSLog(@"%@", error);
     }];

它是从viewDidLoad调用的。大多数情况下它运行良好，但有时我会收到此错误：

Error Domain=com.alamofire.error.serialization.response Code=-1011 "Request failed: gateway timed out (504)" UserInfo={NSUnderlyingError=0x7fdd40c18aa0 {Error Domain=com.alamofire.error.serialization.response Code=-1016 "Request failed: unacceptable content-type: text/html" ...etc, nothing interesting...

但是，在控制台我看到 "In progress: 100%"。此外，我总是在浏览器中获取所有数据。因此，我建议，这是我的代码的问题。我该如何解决？

Answer 1

504 网关超时错误是一种 HTTP 状态代码，这意味着一台服务器在尝试加载网页或填写浏览器的另一个请求时没有收到来自它正在访问的另一台服务器的及时响应。

在此处阅读更多内容：http://pcsupport.about.com/od/findbyerrormessage/a/504error.htm

所以你的代码没有错。

Answer 2

您可以通过以下代码处理这些错误。:)

- (void)requestFinished:(ASIHTTPRequest *)request
{
    NSString *str = [request responseString];
    NSLog(@"%@",str);
    NSMutableDictionary *dictjson = [str JSONValue];

    NSInteger iStatus = [[dictjson objectForKey:@"status"] integerValue];
    if (iStatus == 200)
    {
        //        NSMutableDictionary *dictuser = [dictjson objectForKey:@"userinfo"];
        //        [AppDelegate showMessage:@"Register successed" withTitle:@"Success"];
        [self performSegueWithIdentifier:@"sw_right" sender:nil];
    }
    else
    {
        switch (iStatus)
        {
            case 1000:
                [AppDelegate showMessage:@"Packet no field" withTitle:@"Error"];
                return;
                break;
            case 600:
                [AppDelegate showMessage:@"Email duplicated" withTitle:@"Error"];
                return;
                break;
            case 606:
                [AppDelegate showMessage:@"Register failed, Please try again." withTitle:@"Error"];
                return;
                break;

            default:
                [AppDelegate showMessage:@"Register failed, Please try again." withTitle:@"Error"];
                return;
                break;
        }
    }
}

post request

    ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://yourApiURL"]]];

    [request setPostValue:strFirstName   forKey:@"fname"];
    [request setPostValue:strLastName    forKey:@"lname"];
    [request setPostValue:strUniversity  forKey:@"university"];
    // add post parameters so on

    [request addRequestHeader:@"Content-Type" value:@"application/json"];
    [request addRequestHeader:@"Accept" value:@"application/json"];
    [request setDelegate:self];
    [request setTimeOutSeconds:30.0];
    [request setRequestMethod:@"POST"];
    [request startAsynchronous];

AFNetworking - 数据已加载，但出现错误 504

AFNetworking - the data is loaded, but error 504 occurred

networking

objective-c

ios

afnetworking-3