# 签名
    params["sign"] = _sign_hmac_sha256(params, settings.WXPAY_API_V2_KEY)

    # 发送请求
    url = "https://fraud.mch.weixin.qq.com/secsvc/getrealnameinfo"  # 签名

    我的实现大概路线

文档：https://pay.wechatpay.cn/doc/v2/merchant/4011987792


流程：
1. 前端跳转授权小程序获取 auth_code
2. 后端用 auth_code 换取 access_token
3. 后端用 access_token 获取加密的实名信息
4. 用商户私钥解密实名信息
"""

log:
[SUCCESS] 跳转授权小程序成功 {"errMsg":"navigateToMiniProgram:ok"} at pages/user/realname/index.vue:103
uni.api.esm.js:502 [COMPLETE] 跳转完成 {"errMsg":"navigateToMiniProgram:ok"} at pages/user/realname/index.vue:114
uni.api.esm.js:502 App Hide at App.vue:49
uni.api.esm.js:502 App Show {"path":"pages/user/realname/index","query":{},"scene":1038,"referrerInfo":{"appId":"wx88736d7d39e2eda6","extraData":{"err_code":"SYSTEM_ERROR","err_code_des":" check product auth fail"}},"mode":"default","apiCategory":"default"} at App.vue:13
uni.api.esm.js:502 ========== 授权小程序返回原始数据 ========== at App.vue:19
uni.api.esm.js:502 {
  "appId": "wx88736d7d39e2eda6",
  "extraData": {
    "err_code": "SYSTEM_ERROR",
    "err_code_des": " check product auth fail"
  }
} at App.vue:20
uni.api.esm.js:502 =========================================== at App.vue:21