无法从服务器API解析JSON

Question

我正在使用AFNetworking通过以下代码从服务器获取API后响应

void (^AuthLoginCompleteBlock)(BOOL success, NSString *message, NSDictionary *response, NSError *error);
-(void)login:(NSString *)user password:(NSString *)password deviceID:(NSString *)deviceID callback:(authRequestCompleteBlock)callback{

    AuthLoginCompleteBlock = callback;
    NSDictionary *parameters = [NSDictionary dictionaryWithObjectsAndKeys:user,@"data[User][username]]",password,@"data[User][password]]",deviceID,@"data[User][device_id]]", nil];

    AFHTTPSessionManager *manager = [[AFHTTPSessionManager alloc]initWithSessionConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];

    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/html", nil];
    [manager POST:[NSString stringWithFormat:@"%@/%@",SERVER_URL,LOGIN] parameters:parameters progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        NSString *str = [NSString stringWithFormat:@"%@",responseObject];

        AuthLoginCompleteBlock(YES,str,nil,nil);
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {

        AuthLoginCompleteBlock(NO,error.description,nil,nil);
    }];
    NSLog(@"param = %@",parameters);
}

现在，URL可以正常工作，并且一切似乎都很好，但是问题是响应是通过我在AuthLoginCompleteBlock块中创建的message字符串来进行的，而NSDictionary响应正在AuthLoginCompleteBlock NULL ，并且看起来像这样（消息字符串）

{
    message = "Please enter valid email related to your account.";
    status = failed;
}

在尝试像这样获取时

NSData *jsonData = [message dataUsingEncoding:NSUTF8StringEncoding];

            NSError *error = nil;
            id json = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingAllowFragments error:&error];
            if(!error) {
                NSLog(@"hello = %@", json);
            }
            else{
                NSLog(@"errr = %@",error.description);
            }

出现以下错误

错误域= NSCocoaErrorDomain代码= 3840“字符6周围的对象中的值没有字符串键。” UserInfo = {NSDebugDescription =字符6周围的对象中的值没有字符串键。这意味着服务器的Json格式不正确？ 但在邮递员中，响应如下，效果很好

{
  "status": "failed",
  "message": "Please enter valid email related to your account."
}

如果我遗漏了一些东西，请发表评论。

Answer 1

问题是我已经在买字典了，所以我就不用解析它了。 错误是这两行。

 NSString *str = [NSString stringWithFormat:@"%@",responseObject];

 AuthLoginCompleteBlock(YES,str,nil,nil);

我正在将字符串发送到已经是字典的块中。

Answer 2

AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
        manager.requestSerializer = [AFHTTPRequestSerializer serializer];

        NSDictionary *parameters = @{
                                     @"user": @"login",

                                     @"password": txtFieldPassword.text,

                                     @"device": @"ios",
                                     @"deviceToken": strToken,


                                     };


        NSLog(@"parameters is ====%@",parameters);
        manager.responseSerializer = [AFJSONResponseSerializer
                                      serializerWithReadingOptions:NSJSONReadingAllowFragments];
        [manager POST:@"yourUrl" parameters:parameters progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject)

        {

            NSLog(@"success!%@",responseObject);
            [self successfullLogin:responseObject];


        } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error)
        {
            NSLog(@"error: %@", error);


        }];