错误信息{"errcode":47001,"errmsg":"data format error detail: [json错误] rid:

635112ef-0af49f6c-56cb36ba"}。

ContentType = "application/json; charset=utf-8"

参数：{"openid":"xxx","sender_phone":"xxx","receiver_phone":"xxx","delivery_id":"post","waybill_id":"xxx","goods_info":"{\"detail_list\":[{\"goods_name\":\"笔记本\",\"goods_img_url\":\"null\",\"goods_desc\":\"SFT10012\"\"}]}","trans_id":"420000155220221xxx","order_detail_path":"index"}

找不到错误原因呢？