微信公众号支付

下面以微信公众号支付为例，公众号支付必须在微信浏览器中调起。

同时微信公众号要开启相应的权限，主要有：

1、获取用户权限（在公众号管理平台-》设置-》公众号设置-》功能设置当中有“业务域名”、“js 接口安全域名”、“网页授权域名”，均需设置如www.baidu.com ，子目录的可设置为test.baidu.com/wxpaycs ，每月最多可修改 3 次）

2、商户平台的开发配置（在商户平台产品中心-》开发配置-》公众号支付里设置支付授权目录，最多可添加 5 个，可设置如http://www.baidu.com/pay/）

新建支付服务类文件\Service\WxpayService.class.php

<?php
namespace Home\Service;

class WxpayService {
    /**
     * 微信配置信息
     * 原包需要修改\lib\WxPay.Config.php里相应的配置，以下配置只供本类部分调用
     * 原包需要修改\example\WxPay.JsApiPay.php里相应的引入require_once  dirname ( __FILE__ ).DIRECTORY_SEPARATOR."../lib/WxPay.Api.php";
     * 原包需要修改\lib\WxPay.Api.php里537行左右curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE);//严格校验
     */
    function __construct() {
        $payConfig = array(
            'APPID' => D('Config')->get('wxpay_appid'), //'wx*******', //绑定支付的APPID（必须配置，开户邮件中可查看）
            'MCHID' => D('Config')->get('wxpay_mchid'), //'******', //商户号（必须配置，开户邮件中可查看）
            'KEY' => '******', //商户支付密钥，参考开户邮件设置（必须配置，登录商户平台自行设置）设置地址：https://pay.weixin.qq.com/index.php/account/api_cert
            'APPSECRET' => '******', //公众帐号secert（仅JSAPI支付的时候需要配置， 登录公众平台，进入开发者中心可设置），获取地址：https://mp.weixin.qq.com/advanced/advanced?action=dev&t=advanced/dev&token=2005451881&lang=zh_CN
            'notify_url' => C('PROTOCOL') . $_SERVER['SERVER_NAME'] . U('Pay/wxpay_notify_url'), //异步通知地址
            'pay_log_txt' => __ROOT__ . '/Public/wxpay_log_bef74b0ac451f8e6e5301453f94799856.txt', //支付日志(需要先建立此文件)
        );
        $this->payConfig = $payConfig;
    }

    /**
     * 获取支付宝配置参数
     * @return array
     */
    public function getConfig() {
        return $this->payConfig;
    }

    /**
     * 设置支付配置参数
     * @param $data
     */
    public function setConfig($data) {
        $payConfig = $this->payConfig;
        foreach ($data as $k => $v) {
            $payConfig[$k] = $v;
        }
        $this->payConfig = $payConfig;
    }

    /**
     * 支付处理
     * @param $data
     * @return mixed
     */
    public function pay($data) {
        Vendor('Wxpay.lib.WxPay#Api');
        Vendor('Wxpay.example.WxPay#JsApiPay');
        $config = $this->payConfig;
        //①、获取用户openid
        $tools = new \JsApiPay();
        $WxData = S('WxData-'.session('uid'));//这里要带上会员uid标识，防止出现“下单账号与支付账号不一致”
        //②、统一下单
        $input = new \WxPayUnifiedOrder();
        $input->SetBody($data['body']);
        $input->SetAttach($data['attach']);
        $input->SetOut_trade_no($data['out_trade_no']);
        $input->SetTotal_fee($data['total_fee']);
        $input->SetTime_start(date("YmdHis"));
        $input->SetTime_expire(date("YmdHis", time() + 600));
        $input->SetGoods_tag($data['goods_tag']);
        $input->SetNotify_url($config['notify_url']);
        $input->SetTrade_type("JSAPI");
        $input->SetOpenid($WxData['openid']);
        $order = \WxPayApi::unifiedOrder($input);
        //dump($order);dump($data);dump(S('userInfo'));die;
        $jsApiParameters = $tools->GetJsApiParameters($order);
        $editAddress = $tools->GetEditAddressParameters(); //获取共享收货地址js函数参数
        $reData['jsApiParameters'] = $jsApiParameters;
        $reData['editAddress'] = $editAddress;
        return $reData;
    }

    /**
     * 记录支付异步记录
     * @param $data
     */
    public function setPaylog($data) {
        $config = $this->payConfig;
        $str = serialize($data) . "\r\n==================================================================================\r\n";
        import("Org.Util.File");
        $file = new \File($config['pay_log_txt']);
        $realfiel = $file->getRealFile();
        file_put_contents($realfiel, $str, FILE_APPEND);
    }

    /**
     * 将xml转为数组
     * @param $xml
     * @return mixed
     */
    public function xmlToArray($xml) {
        //将XML转为array
        $array_data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
        return $array_data;
    }
}

支付处理控制器

<?php
namespace Home\Controller;

use Think\Controller;
use Common\Controller\HomeController;

/**
 * 商城订单支付控制器
 * Class PayController
 * @package Home\Controller
 */
class PayController extends HomeController {

    /**
     * 初始化
     */
    function __construct() {
        parent::__construct();
        $pay_scene = 1; //支付场景为订单支付
        $ModelObj = D('Order'); //订单存储模型
        $bodytags = '产品购买';
        $is_test = true; //是否为测试，使用不同的支付金额
        $this->pay_scene = $pay_scene;
        $this->ModelObj = $ModelObj;
        $this->bodytags = $bodytags;
        $this->is_test = $is_test;
    }

    /**
     * 微信支付
     */
    public function wxpay() {
        $ModelObj = $this->ModelObj;
        //接收记录初始订单号
        $order_number = I('order_number') ? I('order_number') : session('order_number');
        session('order_number', $order_number);
        if (I('order_number')) {
            //如果传过来的订单号则跳转先获取用户信息
            $this->redirect('wx_getuser');
        }

        $order = $ModelObj->where(array('order_number' => $order_number))->find();
        //支付数据
        $payData = array(
            'out_trade_no' => $order['order_number'],
            'attach' => $order_number, //商家数据包原封不动地返回
            'total_fee' => $this->is_test ? 1 : $order['real_all_money'] * 100, ////微信支付是以分为单位的。
            'body' => $this->bodytags,
            'goods_tag' => $this->bodytags,
        );
        $reData = D('Wxpay', 'Service')->pay($payData);
        $this->reData = $reData;
        $this->order = $order;
        $this->display('wxpay');
    }

    /**
     * 获取微信用户信息
     */
    public function wx_getuser() {
        $payConfig = D('Wxpay', 'Service')->getConfig();
        $appid = $payConfig['APPID'];
        $appsecret = $payConfig['APPSECRET'];
        //如果是换取了code或access_token处于有效状态则获取用户信息。如果换取了code动作后则原access_token就会失效。
        if (I('code') || S('WxData-'.session('uid'))) {//这里要带上会员uid标识，防止出现“下单账号与支付账号不一致”
            $code = I('code');
            if (!S('WxData-'.session('uid'))) {//这里要带上会员uid标识，防止出现“下单账号与支付账号不一致”
                $open_id_url = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid=' . $appid . '&secret=' . $appsecret . '&code=' . $code . '&grant_type=authorization_code';
                $ch = curl_init();
                curl_setopt($ch, CURLOPT_URL, $open_id_url);
                curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
                curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
                curl_setopt($ch, CURLOPT_HEADER, FALSE);
                curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
                $result = curl_exec($ch);
                curl_close($ch);
                $access_token_info = json_decode($result, true);
                //保存access_token信息
                S('WxData-'.session('uid'), $access_token_info, $access_token_info['expires_in'] - 1000);//这里要带上会员uid标识，防止出现“下单账号与支付账号不一致”
            }
            $data = S('WxData-'.session('uid'));//这里要带上会员uid标识，防止出现“下单账号与支付账号不一致”
            //换取用户信息
            $user_info_url = 'https://api.weixin.qq.com/sns/userinfo?access_token=' . $data['access_token'] . '&openid=' . $data['openid'] . '&lang=zh_CN';
            $ch = curl_init();
            curl_setopt($ch, CURLOPT_URL, $user_info_url);
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
            curl_setopt($ch, CURLOPT_HEADER, FALSE);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
            $userinfo = curl_exec($ch);
            curl_close($ch);
            $userinfoArr = json_decode($userinfo, true);
            S('userInfo', $userinfoArr); //保存用户信息可供存储这里不要用session，用数据缓存
            $this->redirect('wxpay'); //回跳到支付处理页
        } else {
            //换取code
            $code_url = 'https://open.weixin.qq.com/connect/oauth2/authorize?appid=' . $appid . '&redirect_uri=' . urlencode(C('PROTOCOL') . $_SERVER['SERVER_NAME'] . U(CONTROLLER_NAME . '/' . ACTION_NAME)) . '&response_type=code&scope=snsapi_userinfo&state=state_str#wechat_redirect';
            header("Location:" . $code_url);
            exit();
        }
    }

    /**
     * 微信支付回调地址
     */
    public function wxpay_notify_url() {
        $ModelObj = $this->ModelObj;
        $payServiceObj = D('Wxpay', 'Service');
        $payConfig = $payServiceObj->getConfig();
        $xml = file_get_contents("php://input");
        $array = $payServiceObj->xmlToArray($xml);
        //记录日志
        $payServiceObj->setPaylog($array);
        //交易判断
        if ($array['result_code'] == 'SUCCESS' && $array['return_code'] == 'SUCCESS' && $array['mch_id'] == $payConfig['MCHID']) {
            $orderid = $array['out_trade_no'];
            //交易支付成功
            $re = $ModelObj->setPay($orderid, 2);
            $array['pay_scene'] = $this->pay_scene; //支付场景指定
            $re2 = D('PayWx')->addRecord($array); //增加支付详情参数
        }

    }

    /**
     * 微信成功跳转地址
     */
    public function wx_resultinfo() {
        $ModelObj = $this->ModelObj;
        $order_number = I('out_trade_no');
        $order = $ModelObj->where(array('order_number' => $order_number))->find();
        $this->order = $order;
        $this->display('pay_ok');
    }

}

其中微信支付 thml 页面模板

<!DOCTYPE html>
<html>
    <head>
        <title>微信在线付款</title>
        <meta charset="UTF-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <script src="http://res.wx.qq.com/open/js/jweixin-1.0.0.js"></script>
        <script type="text/javascript">
            //调用微信JS api 支付
            function jsApiCall() {
                WeixinJSBridge.invoke(
                        'getBrandWCPayRequest',
                        {$reData['jsApiParameters']},
                        function (res) {
                            WeixinJSBridge.log(res.err_msg);
                            //alert(res.err_code + res.err_desc + res.err_msg);
                            //alert(res.err_msg);
                            if (res.err_msg == 'get_brand_wcpay_request:ok') {
                                //alert('支付成功');
                                window.location.href = "{:U('wx_resultinfo',array('out_trade_no'=>$order['order_number']))}";
                            }
                        }
                );
            }

            function callpay() {
                if (typeof WeixinJSBridge == "undefined") {
                    if (document.addEventListener) {
                        document.addEventListener('WeixinJSBridgeReady', jsApiCall, false);
                    } else if (document.attachEvent) {
                        document.attachEvent('WeixinJSBridgeReady', jsApiCall);
                        document.attachEvent('onWeixinJSBridgeReady', jsApiCall);
                    }
                } else {
                    jsApiCall();
                }
            }
        </script>
        <script type="text/javascript">
            //获取共享地址
            function editAddress() {
                WeixinJSBridge.invoke(
                        'editAddress',
                        {$reData['editAddress']},
                        function (res) {
                            var value1 = res.proviceFirstStageName;
                            var value2 = res.addressCitySecondStageName;
                            var value3 = res.addressCountiesThirdStageName;
                            var value4 = res.addressDetailInfo;
                            var tel = res.telNumber;
                            alert(value1 + value2 + value3 + value4 + ":" + tel);
                        }
                );
            }
            callpay();//调起支付
        </script>
    </head>
    <body></body>
</html>