POST http://localhost:8080/test
#POST https://zfpt.gdufs.edu.cn/pay-api/unifiedorder/open/directPay
Content-Type: application/x-www-form-urlencoded

mch_id=TSGSF&out_trade_no=liyuan-pay-test-id&scene=web&notify_url=http=//127.0.0.1/notify&charset=charset&timestamp=20211008174601931&version=2.0&sign=xxx&pay_info={“items”:[{“item_code”:“9379710”,“item_money”:0.2}],“total_money”:0.2}