在iOS中使用sendAsynchronousRequest:request API处理401状态码

我正在使用这种方式的API来login我的应用程序。

NSString *url = [NSString stringWithFormat:@"%@//login",xyz]; NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:url]]; NSError *error; NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dict options:NSJSONWritingPrettyPrinted error:&error]; if (!jsonData) { NSLog(@"Error creating JSON object: %@", [error localizedDescription]); } [request setValue:@"application/json;charset=utf-8" forHTTPHeaderField:@"Content-Type"]; [request setValue:APIKEY forHTTPHeaderField:@"X_API_KEY"]; [request setHTTPMethod:@"POST"]; [request setHTTPBody:jsonData]; [NSURLConnection sendAsynchronousRequest:request // the NSOperationQueue upon which the handler block will be dispatched: queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) { NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response; NSDictionary *responseDict = [NSJSONSerialization JSONObjectWithData: data options: 0 error: &error]; //I am using sbjson to parse if(httpResponse.statusCode == 200) { //Show message to user success } else if(httpResponse.statusCode == 401) { //Show message to user -fail } else if(httpResponse.statusCode == 500) { //Show message to user- server error } }]; 

当我使用正确的用户名和密码,我得到httpResponse和状态码为200.但是,如果使用错误的用户名和密码,我没有得到401。

那么如何处理这种情况

关心Ranjit

您正在将您的NSURLResponse转换为NSHTTPURLResponse但这不会自动公开您在statusCode属性中预期的实际值。

相反,你应该检查是否已经填充了error属性,而不是检查code属性。

 if(error) { NSLog(@"error: %@", error.code); if(error.code == 401) { //handle 401 errors } else if(error.code == 500) { //handle 500 errors } } else { //successful request }