csapi/application/expand/controller/WechatPay.php

<?php
namespace app\expand\controller;
use app\common\service\HelperService;
use app\index\service\wechat\JsApi_pub;
use app\index\service\wechat\UnifiedOrder_pub;
use app\index\service\wechat\Refund_pub;
use think\Config;
use think\Validate;
use think\Log;

/**
 * 微信支付接口
 * Class WeChat
 * @package app\expand\controller
 */
class WechatPay extends BaseAuth
{
    private $_Account = null;
    private $_APPID  = null;
    private $_APPSECRET = null;

    public function __construct(){

        parent::__construct();
        
        $this->getFileContext();
                
        /**
         * 当且仅当微信异步回调地址发起请求的的时候，放他通过
         */
         if($this->_inWhiteList){
            return true;
        }

        $this->_Account = $this->getKey($this->_apiCode);
        //验证是否具有访问这个接口的权限
        if(!isset($this->_Account['Wechat_pay_appId'])
            || !isset($this->_Account['Wechat_pay_appsecret'])
            || !isset($this->_Account['Wechat_pay_key'])
            || !isset($this->_Account['Wechat_pay_mchId'])
            || !isset($this->_Account['apiclientCert'])
            || !isset($this->_Account['apiclientKey'])
        ){

            HelperService::returnJson(['code'=>400,'msg'=>'WECHAT pay interface unauthorized access','data'=>$this->_Account]);
        }

        $this->_APPID = $this->_Account['Wechat_pay_appId'];
        $this->_APPSECRET = $this->_Account['Wechat_pay_appsecret'];
        $this->_apiclientCert = $this->_Account['apiclientCert'];
        $this->_apiclientKey = $this->_Account['apiclientKey'];

        $WechatPayTip = isset($this->_Account['Wechat_pay_tip'])
                ?$this->_Account['Wechat_pay_tip']:"";
        $WechatPaySubMchId = isset($this->_Account['Wechat_pay_sub_mchId'])
                ?$this->_Account['Wechat_pay_sub_mchId']:"";
        
        Config::set('WECHAT_APPID',$this->_APPID);
        Config::set('WECHAT_APPSECRET',$this->_APPSECRET);
        Config::set('WECHAT_CERT',$this->_apiclientCert);
        Config::set('WECHAT_KEY',$this->_apiclientKey);
        Config::set('WECHAT_TIP',$WechatPayTip);
        Config::set('WECHAT_MCHID',$this->_Account['Wechat_pay_mchId']);
        Config::set('WECHAT_SUB_MCHID',$WechatPaySubMchId);
        Config::set('WECHAT_PAY_KEY',$this->_Account['Wechat_pay_key']);
    }

    /**
     * 平台版支付接口
     */
    public function platformWxPay(){

        $param = $this->_sysParams;

        $rule = [
            'pay_notify_url|支付通知跳转'=>'max:1000',
            'order_no|订单编号'=>'require',
            'total_price|总金额'=>'require'
        ];
        
//        Log::record("platformWxPay:".$param);

        $validate = new Validate($rule);
        if(!$validate->check($param)){
            HelperService::returnJson(['code'=>400,'msg'=>$validate->getError(),'data'=>[]]);
        }

        session('pay_notify_url',$param['pay_notify_url']);
        session('order_no',$param['order_no']);
        session('total_price',$param['total_price']);

        require_once(APP_PATH.'/common/service/wechat/WxPayPubHelper.php');
        //使用jsapi接口
        $jsApi = new JsApi_pub();
        //通过code获得openid，通知的接口
        $httpFix = HelperService::getHttpHeader();
        $url = $jsApi->createOauthOpenidForCode("{$httpFix}{$_SERVER['HTTP_HOST']}/v1/getOpenId2Pay/apiCode/".$this->_apiCode, rand(1000,9999));
        HelperService::addLog([
            'data'=>$param,
            'url'=>$url,
        ]);
        header("Location: $url");
        exit;
    }

    /**
     * 支付获取openid之后跳转的地址
     */
    public function getOpenId2Pay(){
        //使用jsapi接口
        require_once(APP_PATH.'/common/service/wechat/WxPayPubHelper.php');
        $jsApi = new JsApi_pub();

        $code = $this->_sysParams['code'];
        $this->_apiCode = $this->_sysParams['apiCode'];
        
        $account = $this->getKey($this->_apiCode, false);
        
        Config::set('WECHAT_APPID',$account['Wechat_pay_appId']);
        Config::set('WECHAT_APPSECRET',$account['Wechat_pay_appsecret']);
        Config::set('WECHAT_MCHID',$account['Wechat_pay_mchId']);
        Config::set('WECHAT_PAY_KEY',$account['Wechat_pay_key']);
        
        $jsApi->setCode($code);
        $openInfo = $jsApi->getOpenidInfo();
        
        HelperService::addLog([
            'openInfo'=>$openInfo,
            'code'=>$code,
        ]);

        if(!isset($openInfo['openid'])){
            $notify_url = base64_decode(session('pay_notify_url'));
            header("HTTP/1.1 301 Moved Permanently");
            header("Location: $notify_url");
            exit;
        }
        $openid = $openInfo['openid'];

        $unifiedOrder = new UnifiedOrder_pub();
        $money = intval(session('total_price'));
        if($money<=0){
            header("HTTP/1.1 500 支付调用失败(支付金额为0)");
            exit;
        }
        //设置统一支付接口参数
        $unifiedOrder->setParameter("openid", "$openid"); //商品描述
        $unifiedOrder->setParameter("body",Config::get('WECHAT_TIP')."[".date('Y-m-d H:i:s')."]"); //商品描述
        //自定义订单号，此处仅作举例
        $out_trade_no = $this->_apiCode."_".session('order_no');
        $unifiedOrder->setParameter("out_trade_no", $out_trade_no); //商户订单号
        $unifiedOrder->setParameter("total_fee", $money); //总金额
        $httpFix = HelperService::getHttpHeader();
        $unifiedOrder->setParameter("notify_url", "{$httpFix}{$_SERVER['HTTP_HOST']}/v1/platformNotifyUrl.html"); //通知地址
        $unifiedOrder->setParameter("trade_type", "JSAPI"); //交易类型
        $prepay_id = $unifiedOrder->getPrepayId($out_trade_no."_".time());
        $jsApi->setPrepayId($prepay_id);
        $jsApiParameters = $jsApi->getParameters();

        $notify_url = session('pay_notify_url')?base64_decode(session('pay_notify_url')):"/v1/paySuccess";
        
        HelperService::addLog([
            'data'=>$prepay_id,
            'url'=>$notify_url,
        ]);

        require_once(APP_PATH.'/expand/view/wechat/wxPlatformPay.php');
    }
    
    public function paySuccess(){
        return $this->fetch('wechat/paySuccess');
    }

    /**
     * 支付异步通知接口
     */
    public function platformNotifyUrl(){

        $this->getInput();
        $param = $this->_oldParams;

        
        $params = HelperService::object2Arr(simplexml_load_string($param, 'SimpleXMLElement', LIBXML_NOCDATA));

        if(empty($params)){
            HelperService::returnJson(['code' => 400, 'msg' => "参数错误"]);
        }

        try {
            $arr = ['total_fee', 'out_trade_no'];
            foreach ($arr as $key=>$value) {
                if (!isset($params[$value])) {
                    HelperService::returnJson(['code' => 400, 'msg' => "参数错误({$key})",'params'=>$params]);
                }
            }

            $tradeNoArr = explode('_', $params['out_trade_no']);
            if(count($tradeNoArr)<2){
                HelperService::returnJson(['code' => 400, 'msg' => "参数错误（trade）"],$param);
            }
            $companyCode = $tradeNoArr[0];
            $this->_Account = $this->getKey($companyCode,false);
            $orderNo = isset($tradeNoArr[1]) ? $tradeNoArr[1] : 0;

            //开发分发给不同的支付主体
            if(!isset($this->_Account['Wechat_pay_notify_url'])
                || empty($this->_Account['Wechat_pay_notify_url'])){
                HelperService::returnJson(['code' => 400, 'msg' => "回调地址不存在"],$param);
            }

            if(!is_array($this->_Account['Wechat_pay_notify_url'])){
                HelperService::returnJson(['code' => 400, 'msg' => "回调地址不是数组"],$param);
            }

            $notifyUrlArr = $this->_Account['Wechat_pay_notify_url'];
            foreach($notifyUrlArr as $url){
                $is_ssl = strpos($url, 'https://')!==false?true:false;

                $data = [
                    'order_no'=>$orderNo,
                    'total_price'=>"{$params['total_fee']}",
                    'out_trade_no'=>"{$params['out_trade_no']}"
                ];

                $times = 3;
                while($times--){
                    $res = HelperService::httpPost($url,json_encode($data),$is_ssl);
                    HelperService::addLog(['item'=>$url,'data'=>$data,'result'=>$res]);
                    if($res != false){
                        break;
                    }
                }
                
                if($times ==0){
                    Log::record("支付推送异常=>url:".$url."=>res:".  json_encode($res)."=>data:".  json_encode($data));
                }
            }
            
            HelperService::addLog(['ret'=>'success']);
            die('success');
        }catch (\Exception $ex){
            HelperService::addLog(['msg'=>$ex->getMessage(),"file"=>$ex->getFile(),"line"=>$ex->getLine()]);
            die('fail');
        }
    }
    
    
    
    /**
     * 平台版退款接口
     */
    public function platformRefund(){

        $params = $this->_params;
        $rule = [
            'out_trade_no'=>'require',
            'total_fee'=>'require',
            'refund_fee'=>'require',
            'op_user_id'=>'require'
        ];

        $validate = new Validate($rule);
        if(!$validate->check($params)){
            HelperService::returnJson(['code'=>400,'msg'=>$validate->getError()],$params);
        }

        require_once(APP_PATH.'/index/service/wechat/WxPayPubHelper.php');
        $Refund = new Refund_pub();
        $Refund->setParameter('out_trade_no',$params['out_trade_no']);
        $Refund->setParameter('out_refund_no',uniqid());
        $Refund->setParameter('total_fee',$params['total_fee']);
        $Refund->setParameter('refund_fee',$params['refund_fee']);
        $Refund->setParameter('op_user_id',$params['op_user_id']);
        $data = $Refund->getResult();
        $msg = isset($data['result_code'])?$data['result_code']:'fail';

        HelperService::returnJson(['code'=>200,'msg'=>"{$msg}",'data'=>$data]);
    }
    
}