1.接口：v3/pay/transactions/jsapi

"POST", Url, 时间戳, 随机数, 请求body数据，验签数据与本地工具生成的签名相同，

2.签名前数据：

POST

v3/pay/transactions/jsapi

1689469652

HMzxj20230716090732972636

{"amount":{"total":1,"currency":"CNY"},"appid":"wx3e16bbd23533223e","description":"yudingdan","mchid":"1647623137","notify_url":"https://zxj.hmifly.com/zxj/payNotify","out_trade_no":"WEGPT0000120230716090725705140","payer":{"openid":"oPs3w007w6EDzesldHDXAwUg1ocE"}}

3.签名结果与本地工具签名相同

Authorization=WECHATPAY2-SHA256-RSA2048 mchid="1647623137",serial_no="60CC0179A40B92C3FACA19EA8E574D1226C43DCA",nonce_str="HMzxj20230716081151868550",timestamp="1689466311",signature="uQssiV6hqju5ruLWbtMkpTlTZQ88dgVjLZ7vqUGx6bINgOYItwM6YS8oBB5kPgrXkTf2jhk1/ldc+7bphSOGiD/HWO8sOpBnQ8YeZMiLkEwQtf0xz8goqM87/5A3BuySxILFkJZO9o/nQzoX/CP5UpTxB+TIR8FD3h9CEp7zvpVWiWDrO4OT3xFT+/ZP4ZtdJa+llcKpEhbBndGdCcSt5hFmJp2YLkY1wDiQqJ6ZndLBjXpe+FWlF6c7kgZ8+ez+jdRAbLByrckgTSFn2X70DSPmiTpKa6gx7FIBenAic1BD1TPAVXY5Kpn6C7IRRf49NLByxZtUPqpZlPuK2BuUSQ=="

4.接口返回报错：

{

    "code": "SIGN_ERROR",

    "detail": {

        "detail": {

            "issue": "sign not match"

        },

        "field": "signature",

        "location": "authorization",

        "sign_information": {

            "method": "POST",

            "sign_message_length": 431,

            "truncated_sign_message": "POST\n/v3/pay/transactions/jsapi\n1689466311\nHMzxj20230716081151868550\n{\r\n    \"\n",

            "url": "/v3/pay/transactions/jsapi"

        }

    },

    "message": "签名错误，请检查后再试"

}