# 微信小程序支付  进入小程序，下单，请求下单支付，调用小程序登录API来获取Openid（https://mp.weixin.qq.com/debug/wxadoc/dev/api/api-login.html#wxloginobject） ,生成商户订单，这些都是在小程序端完成的业务。 代码部分如下： wxpay: function () { var that = this wx.login({ success: function (res) { console.log("RRRRR", res.code)//getOpenId //获取getOpenId that.getOpenId(res.code) } }); }, getOpenId: function (code) { var that = this; wx.request({ url: `${app.globalData.API_URL}/order`, data: {}, method: 'post', success: function (res) { console.log('order_id') console.log(res.data) that.generateOrder(res.data.order_id) }, fail: function () { // fail }, complete: function () { // complete } }) }, /**生成商户订单 */ generateOrder: function (order_id) { var that = this //统一支付 wx.request({ url: `${app.globalData.DOMAIN}/mpbase/wxapp/wxpay/mp_id/d8d49a5800362843f29833e03038a72a/id/` + order_id, method: 'post', data: {}, success: function (res) { console.log(res) var pay = res.data //发起支付 var timeStamp = pay[0].timeStamp; console.log("timeStamp:" + timeStamp) var packages = pay[0].package; console.log("package:" + packages) var paySign = pay[0].paySign; console.log("paySign:" + paySign) var nonceStr = pay[0].nonceStr; console.log("nonceStr:" + nonceStr) var param = { "timeStamp": timeStamp, "package": packages, "paySign": paySign, "signType": "MD5", "nonceStr": nonceStr }; that.pay(param) }, }) }, /* 支付 */ pay: function (param) { console.log("支付") console.log(param) wx.requestPayment({ timeStamp: param.timeStamp, nonceStr: param.nonceStr, package: param.package, signType: param.signType, paySign: param.paySign, success: function (res) { // success console.log("支付") console.log(res) wx.navigateBack({ delta: 1, // 回退前 delta(默认为1) 页面 success: function (res) { wx.showToast({ title: '支付成功', icon: 'success', duration: 2000 }) }, fail: function () { // fail }, complete: function () { // complete } }) }, fail: function (res) { // fail console.log("支付失败") console.log(res) wx.showModal({ title: '提示', content: '支付失败', }) return }, complete: function () { // complete console.log("pay complete") } }) },