微信小程序实现微信支付完整流程指南

const app = getApp()

wx.request({
  url: 'https://example.com/pay',
  data: {
    openid: app.globalData.openid,
    total_fee: 100
  },
  success: res => {
    wx.requestPayment({
      timeStamp: res.timeStamp,
      nonceStr: res.nonceStr,
      package: res.package,
      signType: res.signType,
      paySign: res.paySign,
      success: res => {
        console.log(res)
      },
      fail: res => {
        console.log(res)
      }
    })
  }
})

wx.requestPayment({
  timeStamp: res.timeStamp,
  nonceStr: res.nonceStr,
  package: res.package,
  signType: res.signType,
  paySign: res.paySign,
  success: res => {
    // 支付成功，跳转到下一个页面
    wx.navigateTo({
      url: '/pages/order/success'
    })
  },
  fail: res => {
    // 支付失败，展示支付失败提示
    wx.showToast({
      title: '支付失败',
      icon: 'none'
    })
  }
})