java - AFNetworking 在 Java Web 服务中失败

Question

NSURL *url = [NSURL here`URLWithString:@"http://testing.appspot.com/json/ListingBusinessService/"];
    AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];

    httpClient.parameterEncoding = AFJSONParameterEncoding;

    NSDictionary *params = @{@"params":@"women",@"params" : @"women", @"params":@"women"};

    [httpClient registerHTTPOperationClass:[AFJSONRequestOperation class]];
    [httpClient setDefaultHeader:@"Accept" value:@"application/json"];

    [httpClient 
          postPath:@"getNewArrivalProductDetailsWithPaginationForIosApp"
          parameters:params 
           success:^(AFHTTPRequestOperation *operation,id responseObject) 
               {
                  NSLog(@"%@",responseObject);
                }
                 failure:^(AFHTTPRequestOperation *operation, NSError *error) 
                 {
                     NSLog(@"%@",error);
                    UIAlertView *av = [[UIAlertView alloc] initWithTitle:@"Error Retrieving Data"
                                                                  message:[NSString stringWithFormat:@"%@",error]
                                                                 delegate:nil
                                                        cancelButtonTitle:@"OK" otherButtonTitles:nil];
                     [av show];
                 }
     ];

我在执行上面的代码(如 AFNetworkingOperationFailingURLRequestErrorKey )时遇到以下错误，我想我在参数中遗漏了一些内容，请在此提出建议，提前致谢。

Answer 1

从命令行使用curl调用此URL后，我想说问题是响应内容类型是text/plain而不是application/json。 AFJSONRequestOperation 需要 application/json ContentType。

< HTTP/1.1 200 OK
< X-TraceUrl: /appstats/details?time=1390399595248&type=json
< Content-Type: text/plain; charset=UTF-8
< Accept-Ranges: bytes
< Vary: Accept-Encoding
< Date: Wed, 22 Jan 2014 14:06:35 GMT
* Server Google Frontend is not blacklisted
< Server: Google Frontend
< Cache-Control: private
< Alternate-Protocol: 80:quic
< Transfer-Encoding: chunked