iOS 构造json并提交到服务器

这是服务器要求提交的json数据格式：

         data: [
        {
            "good_id": "2168",
            "participants_number": "1",
        }

        {
            "good_id": "2169",
            "participants_number": "3",
        }
    ]

1、构造json并提交数据：

- (void) commitOrder:(NSArray *)good_orderAry{

    //构造json

    NSMutableArray *paramDataAry = [NSMutableArray array];

   

    [good_orderAry enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {

        NSDictionary *dataDic = (NSDictionary *)obj;

        

        NSMutableDictionary <NSString *, NSString*> *dicParam = [NSMutableDictionary<NSString*,NSString*> dictionaryWithCapacity:2];

        [dicParam setObject:dataDic[@"good_id"] forKey:@"good_id"];

        [dicParam setObject:dataDic[@"participants_number"] forKey:@"participants_number"];

        

        [paramDataAry addObject dicParam];

    }];

    

    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:paramDataAry options:NSJSONWritingPrettyPrinted error:nil];

    NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];

    NSDictionary *param = @{@"data": jsonString};

   //提交json数据，AFHTTPSessionManager封装的接口

    [PostHttpRequest url:COMMIT_ORDER parameters: param progress:^(NSProgress *uploadProgress) {

        

    } blockCompletion:^(NSDictionary *dataDic) {

        self.resultCommitOrderDic = dataDic;

    } failure:^{

    }];

}

//有疑问可以一块讨论：我的qq：1246489125