服务请求回来的(NSData *)data与model、字典、数

1、data转为model

WeatherModel *model = [WeatherModel mj_objectWithKeyValues:data];

2、data转为字典

NSDictionary *dictionary = [NSJSONSerialization JSONObjectWithData:data options:NSUTF8StringEncoding error:nil];

3、data转为数组(是包含CityAreaNumModel的数组)

NSArray *arr = [CityAreaNumModel mj_objectArrayWithKeyValuesArray:data];