在JSON写入iOS中获取无效的顶级类型

我试图使用AFNetworking解析json响应，但它返回错误

JSON写入中的顶级类型无效

但我的json如下所示，关于json格式没有问题，我在线检查json，一切正常

{
  "Result": {
    "RoomDetail": [
      {
        "RoomName": "crs",
        "NaturalName": "aaa"
      },
      {
        "RoomName": "ios",
        "NaturalName": "ios"
      }
    ]
  }
}

以下是我使用的代码：

-(void)CallRoom
{
    @try {
        AFHTTPRequestOperationManager *managers = [AFHTTPRequestOperationManager manager];

        NSMutableDictionary *parameter = [[NSMutableDictionary alloc]initWithObjectsAndKeys:
                                           @"bhavin",@"userName",
                                           nil];

        NSString *setUrl = [NSString stringWithFormat:@"http://localhost/OpenFire-Chat/getChatRoomsByUser.htm"];

        managers.responseSerializer = [AFHTTPResponseSerializer serializer];

        [managers POST:setUrl parameters:parameter success:^(AFHTTPRequestOperation *operation, id responseObject) {

            NSError *writeError = nil;
            NSData *jsonData;

            //if ([NSJSONSerialization isValidJSONObject:responseObject])
            {
                jsonData = [NSJSONSerialization dataWithJSONObject:responseObject options:NSJSONWritingPrettyPrinted error:&writeError];
            }


            NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:jsonData
                                                                options:NSJSONReadingMutableContainers
                                                                  error:&writeError];
        }failure:^(AFHTTPRequestOperation *operation, NSError *error) {

            NSLog(@"Error: %@", error);
         }];

    }
    @catch (NSException *exception) {
     }


}

编辑

好的，我的Web服务API中有一个错误：

---

我没有将响应头中的ContentType设置为

application/Json。

我认为您不需要将数据转换为Json格式，因为AFHTTPRequestOperationManager总是以id返回

编写此代码作为响应

NSMUTABLEARRY*dataArray=[NSMUTABLEARRY new]；

---

dataArray=[responseObject mutableCopy]

您不需要这样做

 jsonData = [NSJSONSerialization dataWithJSONObject:responseObject options:NSJSONWritingPrettyPrinted error:&writeError];

当您使用AFNetworking时，它已经序列化了json对象中的数据

所以去掉

 {
            jsonData = [NSJSONSerialization dataWithJSONObject:responseObject options:NSJSONWritingPrettyPrinted error:&writeError];
        }

及

你可以直接打印，就像

 NSLog(@"%@",responseObject)

或者，您可以直接从

响应对象

中获取所需的值

更新：

将整个代码替换为

   @try {


    NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];

    AFURLSessionManager *managers = [[AFURLSessionManager alloc]initWithSessionConfiguration:configuration];



    NSMutableDictionary *parameter = [[NSMutableDictionary alloc]initWithObjectsAndKeys:
                                      @"bhavin",@"userName",
                                      nil];

    NSString *setUrl = [NSString stringWithFormat:@"http://localhost/OpenFire-Chat/getChatRoomsByUser.htm"];



    AFHTTPRequestSerializer *requestSerializer = [AFHTTPRequestSerializer serializer];


    NSMutableURLRequest *request = [requestSerializer requestWithMethod:@"POST" URLString:setUrl parameters:parameter error:nil];

    [[managers dataTaskWithRequest:request completionHandler:^(NSURLResponse * _Nonnull response, id  _Nullable responseObject, NSError * _Nullable error) {

        NSLog(@"response Object : %@",responseObject);

    }]resume];
}
@catch (NSException *exception) {
}

---

尝试此操作以在成功块中获取数据

NSDictionary *allresult = (NSDictionary *)responseObject;
NSDictionary *Result = [allresult objectForKey:@"Result"];
NSArray *roomDetail = [Result objectForKey:@"RoomDetail"];

for(NSDictionary *rooms in roomDetail)
{
    NSString *roomname = [rooms objectForKey:@"RoomName"];
    NSString *naturalName = [rooms objectForKey:@"NaturalName"];
    NSLog(@"roomname : %@ ---> naturalname : %@", roomname, naturalName);
}

---

可能是您缺少可接受的内容类型

只需尝试以下代码：

AFJSONRequestSerializer *serializer = [AFJSONRequestSerializer serializer];
[serializer setStringEncoding:NSUTF8StringEncoding];

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

manager.responseSerializer.acceptableContentTypes=[NSSet setWithObjects:@"text/html",@"application/json", nil];

NSMutableDictionary *parameter = [[NSMutableDictionary alloc]initWithObjectsAndKeys:
                                  @"bhavin",@"userName",
                                  nil];

NSString *setUrl = [NSString stringWithFormat:@"http://localhost/OpenFire-Chat/getChatRoomsByUser.htm"];

[manager POST:setUrl parameters:parameter progress:nil success:^(NSURLSessionTask *task, id responseObject)
     {
         //log responseObject
     } failure:^(NSURLSessionTask *operation, NSError *error) {

     }];

---

隐藏此`jsonData=[NSJSONSerialization dataWithJSONObject:responseObject选项：NSJSONWriting预打印错误：&writeError]；`这个

managers.responseSerializer=[AFHTTPResponseSerializer]并重试一次，通过注释responseSerializer，它会给我错误：错误：错误域=com.alamofire.error.serialization.response代码=-1016“请求失败：不可接受的内容类型：text/html”，在该行中，u面对它直接发送到“”失败：^（AFHTTPRequestOperation）的错误"@Kabali您缺少
内容类型
。请检查我的答案。希望能对您有所帮助。我的回答对象是@Kabali-您需要使用json将数据转换为dict或数组serlization@Kabali：您尝试过我更新的答案吗？我再次更新了！！用户名是我的密钥，bhavin是值，所以在这里可以…使用'initWithOb'jectsAndKeys的my responseObject是在成功块中尝试这一行，并告诉我输出结果是什么（用断点查看）。
NSDictionary*allresult=（NSDictionary*）responseObject；
其结果相同：我的web服务中缺少acceptableContentTypes..thx以获取帮助。@EktaPadaliya谢谢。很好Answer@JagatDave欢迎