## 减少购物车 一次减一个 ~~~[api] post:/online/Goodsctr/subCart?framework=api *openid=默认值#微信openid *groupid#项目id *goodsid#商品id <<< success { "code": 0, "msg": "操作成功", "data": [] } <<< error { "code": -1, "msg": "", "data": [] } ~~~ ---