1.h5转后台
mui.openWindow({ url: "转向后台的网址/doMiniPay?payMoney=" + n + "&buyContent=" + buyContent + "&uid=" + uid, waiting: { autoShow: true, //自动显示等待框，默认为true title: '正在加载支付页面......', //等待对话框上显示的提示内容 } })url：转向后台的网址
payMoney：支付金额
buyContent：支付说明 举例：XXX公司充值
uid：用户id 用于将下单写入数据库
2.跳转小程序获取code
// 小程序webview支付 public function doMiniPay() {// $oid = I("oid"); $oid = $this-getOrderId(); $payjs = " script type='text/javascript' src='https://res.wx.qq.com/open/js/jweixin-1.3.2.js'/script script type='text/javascript' wx.miniProgram.getEnv(function(res) { if (res.miniprogram) { // 走在小程序的逻辑 var params = '?oid=" . $oid . "'; var path = '/pages/wxPay/wxPay'+params; //document.write(params); wx.miniProgram.navigateTo({url: path}); } }); /script "; echo $payjs; }- getOrderId方法为获取随机数方法
public function getOrderId($uid) { //日期:10位 timestamp $datetime = time(); //随机数 $newnum = $this-getNonceNums(); return $datetime . $newnum; }3.小程序端获取code 向后台请求获取openid
var app = getApp()Page({ onLoad: function (options) { var that = this wx.setStorageSync('oid', options.oid); wx.login({ success: function (res) { // 成功的话会返回： // {errMsg: "login:ok", code: "获取用户OpenID的ticket"} that.getOpenId(res.code) } }) }, getOpenId: function (jsCode) { var that = this wx.request({ url: '后台获取openid方法的网址login方法', data: { js_code: jsCode // wx.login()时得到的ticket }, success: function (res) { that.getPrePayId(res.data.openid) } }) },})4.后端获取openid方法
//小程序支付后端 public function login() { $params['appid'] = '';// 小程序的appID $params['secret'] = '';//小程序的appsecret $params['js_code'] = $_GET['js_code'];// 测试用的将值写入文档 // file_put_contents('./lilllsss.txt',$_GET['js_code'],FILE_APPEND); $params['grant_type'] = 'authorization_code'; $urls = "https://api.weixin.qq.com/sns/jscode2session?appid=".$params['appid']."&secret=".$params['secret']."&grant_type=authorization_code&js_code=".$params['js_code'].""; $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $urls); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_POSTFIELDS, $params); $output = curl_exec($ch); if (false === $output) { echo 'CURL Error:' . curl_error($ch); } echo $output; }5.小程序方法拿着openid请求prepayid并进行下单
getPrePayId: function (openId) { var that = this wx.request({ url: '后台wxpay方法获取prepayid', data: { openid: openId, oid: wx.getStorageSync('oid') }, success: function (res) { that.pay(res.data); } }) }, pay: function (data) { var that = this data.success = function (res) { that.payOver() } data.fail = function (res) { that.payOver() } wx.requestPayment(data) }, payOver: function () { wx.reLaunch({ url: '/pages/index/index?oid=' + wx.getStorageSync('oid') }) }6.后台下单 微信返回xml信息 将xml信息解析取到prepayid 打包数据返回给小程序端
// 小程序支付后端 public function wxpay(){ $oid = I("oid"); $dao = M();// $sql = "这里是去订单信息的sql";// $orderRs = $dao-query($sql); $weiXin = new Weixin(); $param['appid'] = '小程序的appid'; $param['mch_id'] = "商户号"; $param['nonce_str'] = $weiXin-getNonceNum();// 随机字符串 $param['body'] = "粮多多充值"; $param['out_trade_no'] = $this-getOrderId();//随机数+时间生成订单号 $param['total_fee'] = 1;//支付金额 $param['spbill_create_ip'] = $_SERVER['REMOTE_ADDR']; $param['notify_url'] = 'https://luoluotech.com/lddServer/pay/PayNotify.php'; $param['trade_type'] = "JSAPI"; //H5 支付类型 $param['openid'] = $_GET['openid']; // 按照要求计算sign// file_put_contents('./ldsdasdqweqwd.txt',$sequence,FILE_APPEND); ksort($param); $sequence = ''; foreach ($param as $key = $value) { $sequence .= "$key=$value&"; }// file_put_contents('./ldsdhiudsadqweqweqwd.txt',$sequence,FILE_APPEND); $apikey = "key商户平台自己设置的";// 这个是手动设置的 $sequence = $sequence ."key=$apikey";// file_put_contents('./ldsddasdqwessfd.txt',$sequence,FILE_APPEND); $param['sign'] = strtoupper(md5($sequence));// file_put_contents('./ldsdhirethbgfb.txt',$param['sign'],FILE_APPEND); // 给微信发出的请求，整个参数是个XML $xml = 'xml' . PHP_EOL; foreach ($param as $key = $value) { $xml .= "$key$value/$key" . PHP_EOL; } $xml .= '/xml'; $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, 'https://api.mch.weixin.qq.com/pay/unifiedorder'); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_POSTFIELDS, $xml); $output = curl_exec($ch); if (false === $output) { echo 'CURL Error:' . curl_error($ch); } // 下单成功的话，微信返回个XML，里面包含prepayID，提取出来 prepay_id![CDATA[这个就是我们要的值]]/prepay_id if (0 === preg_match('/prepay_id![CDATA[(w+)]]/prepay_id/', $output, $match)) { echo $output; exit(0); } file_put_contents('./ldadsadqweqewdsdggdfggfb.txt',$output,FILE_APPEND); $weiXin = new Weixin(); $prepayId = $match[1]; $response['appId'] = '小程序appid'; $response['nonceStr'] = $weiXin-getNonceNum(); $response['package'] = 'prepay_id=' . $prepayId; $response['signType'] = 'MD5'; $response['timeStamp'] = (string) time(); $sequence = ''; foreach ($response as $key = $value) { $sequence .= "$key=$value&"; } $response['paySign'] = strtoupper(md5("{$sequence}key=手动设置的商户key")); echo json_encode($response); }7.小程序调起微信支付
pay: function (data) { var that = this data.success = function (res) { that.payOver() } data.fail = function (res) { that.payOver() } wx.requestPayment(data) }, payOver: function () { wx.reLaunch({ url: '/pages/index/index?oid=' + wx.getStorageSync('oid') }) }
