AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
NSMutableDictionary *dict = [NSMutableDictionary dictionary];
//dict[@"class"] = @"TestObject";
dict[@"limit"] = @10;
dict[@"order"] = @"updatedAt";
[manager GET:@"https://leancloud.cn/1.1/classes/TestObject?limit=10&&order=-updatedAt&&" parameters:nil progress:^(NSProgress * _Nonnull downloadProgress) {
} success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
NSLog(@"%@",responseObject);
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
NSLog(@"%@",error);
}];