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 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 工作正常，一切看起来都很好，但问题是响应是通过我在

message

块中创建的

AuthLoginCompleteBlock

字符串来的，并且

NSDictionary

响应即将到来

NULL

，看起来像这样（消息字符串）

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

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=No

字符 6 周围对象中值的字符串键。这意味着来自服务器的 JSON 格式不正确？但在邮递员中，响应如下并且非常好：

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

如果我遗漏了什么请评论。

Answer 1

问题是我已经有了一本字典，所以我不需要解析它。 bug 就是这两行。

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

 AuthLoginCompleteBlock(YES,str,nil,nil);

我正在将字符串发送到我的块，它已经是一本字典。

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);


        }];