请求入参：{"amount":{"total":2,"currency":"CNY"},"mchid":"--------","out_trade_no":"1374645914317701122","appid":"------","description":"------","notify_url":"https://localhost:2101/weixin/pay/callback","scene_info":{"h5_info":{"type":"Wap"},"payer_client_ip":"192.168.20.87"}}

入参中打----的，传的是正确的，个人原因，不方便展示，目前是报错400，参数错误，也仔细检查了参数，需要传的都传了。api文档地址：https://pay.weixin.qq.com/wiki/doc/apiv3/open/pay/chapter2_6_3.shtml