AFNetworking - 加載數據，但錯誤504發生

Question

我有這樣的代碼：

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); 
    }]; 

它是從viewDidLoad調用。主要是它工作得很好，但有時我得到這個錯誤：

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...

然而，在控制檯上我看到「正在進行：100％」。另外，在瀏覽器中，我總是獲取所有數據。因此，我建議，這是我的代碼問題。我該如何解決這個問題？

Answer 1

的504網關超時錯誤是一個HTTP狀態代碼是指一個服務器未收到來自試圖加載網頁或填充由瀏覽器另一個請求，它正在訪問其他服務器及時響應。

更多在這裏閱讀：http://pcsupport.about.com/od/findbyerrormessage/a/504error.htm

所以沒有什麼錯在你的代碼。

Answer 2

你可以處理這些錯誤好心經過下面的代碼.. :)

- (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];