微信小程序支付接口的实例详解

微信小程序支付接口的实例详解
微信小程序支付第一步 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。小程序端代码// pages/pay/pay.jsvar app = getApp();Page({

微信小程序支付

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第一步 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,生成商户订单，这些都是在小程序端完成的业务。

小程序端代码// pages/pay/pay.jsvar app = getApp();Page({ data: {}, onLoad: function (options) { // 页面初始化 options为页面跳转所带来的参数 }, /* 微信支付 */ wxpay: function () { var that = this //登陆获取code wx.login({ success: function (res) { console.log(res.code) //获取openid that.getOpenId(res.code) } }); }, getOpenId: function (code) { var that = this; wx.request({ url: "https://api.weixin.qq.com/sns/jscode2session?appid=wxa142513e524e496c&secret=5d6a7d86048884e7c60f84f7aa85253c&js_code=" + code + "&grant_type=authorization_code", data: {}, method: 'GET', success: function (res) { console.log('返回openId') console.log(res.data) that.generateOrder(res.data.openid) }, fail: function () { // fail }, complete: function () { // complete } }) }, /**生成商户订单 */ generateOrder: function (openid) { var that = this //统一支付 wx.request({ url: 'http://localhost:8070/RMS/pay_pay.action', method: 'GET', data: { total_fee: '5', body: '支付测试', attach:'真假酒水' }, 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) }, complete: function () { // complete console.log("pay complete") } }) }})