微信支付配置安全域名

// 在小程序的app.json中配置安全域名
{
  "networkTimeout": {
    "request": 10000,
    "downloadFile": 10000
  },
  "navigateToMiniProgramAppIdList": [
    "your-app-id"
  ],
  "setting": {
    "uploadFileMaxSize": 20480,
    "downloadFileMaxSize": 20480,
    "imageMaxSize": 20480,
    "imageMinSize": 100,
    "imageFit": "contain",
    "showImagePreview": true,
    "showImagePreviewMaxHeight": 500,
    "showImagePreviewMaxWidth": 500,
    "enableDebug": true,
    "safeDomain": [
      "https://your-safe-domain.com"
    ]
  }
}

// 在支付页面中进行支付
Page({
  pay: function() {
    wx.request({
      url: 'https://your-safe-domain.com/pay',
      method: 'POST',
      data: {
        orderId: '123456',
        amount: 100
      },
      success: function(res) {
        if (res.data.code === 0) {
          wx.requestPayment({
            timeStamp: res.data.timeStamp,
            nonceStr: res.data.nonceStr,
            package: res.data.package,
            signType: res.data.signType,
            paySign: res.data.paySign,
            success: function(res) {
              console.log('支付成功');
            },
            fail: function(res) {
              console.log('支付失败');
            }
          });
        } else {
          console.log('请求支付失败');
        }
      }
    });
  }
});