laravel 框架接入第三方支付宝扫码支付（万众云平台）

首先在控制器方法，去请求第三方的扫码支付接口

//去充值的界面
    public function recharge(Request $request){

        $data['money']=$request->input('money');//钱数
        $data['order_id']=$request->input('order_id');//订单号
        $data['card_num']=$request->input('card_num');//元宝数量
        $data['username']=$request->session()->get("username");//用户昵称

        $url = 'http://epay.taidupay.com/api/pay/unifiedOrder';
        $key = '';//平台申请的app_key
        $datas = [
            'appId' =>'',//平台申请的app_id
            'timestamp' => (string)time(),
            'nonce' => time().rand(),
            'service' => 'alipay.native',
            'orderNo' => $data['order_id'],
            'totalAmount' =>1,
            'clientIp' => '116.62.214.81',
            'attach' => 'ces',
            'notifyUrl' => 'http://116.62.214.81/city.php',//异步回调地址(必须是外网访问到的地址)
            'body' => '元宝',
        ];
        ksort($datas);

        $signOStr = '';
        foreach ($datas as $k => $val) {
            if ($signOStr != '') {
                $signOStr .= '&';
            }
            $signOStr .= $k . '=' . $val;
        }
        $signOStr = $signOStr . '&key=' . $key;
        $datas['sign'] = strtoupper(MD5($signOStr));

        $data['rs'] = json_decode($this->json_post($url, json_encode($datas)), true);
        //print_r($data['rs']);die;
        if($data['rs']['success'] == true && $data['rs']['status'] == 0){

            echo json_decode($data['rs']['payInfo'], true);
        }else{
            echo " alert('订单编号重复！');parent.location.href='http://116.62.214.81/userInfo'; ";

        }

        return view('recharge')->with('data', $data);

    }
 
    public function json_post($url, $data){
        $ch = curl_init();
        $header = [
            'Accept-Charset: utf-8',
            'Content-Type: application/json'
        ];
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
        curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
        curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (compatible; MSIE 5.01; Windows NT 5.0)');
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
        curl_setopt($ch, CURLOPT_AUTOREFERER, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        $tmpInfo = curl_exec($ch);
        $errorno=curl_errno($ch);

        return $tmpInfo;
    }
city.php异步处理文件内容
 
      
header("Content-type:text/html;charset=utf-8");
    $get_data = file_get_contents('php://input', 'r');
    //file_put_contents('a.txt',$get_data);

        $get_data = json_decode($get_data, true);
        $key = '1bdc6c80b3cb8987e2720bd965748593f07bb3e9';
        $data = $get_data;
        unset($data['sign']);
        ksort($data);


        $signOStr = '';
        foreach ($data as $k => $val) {
            if ($signOStr != '') {
                $signOStr .= '&';
            }
            $signOStr .= $k . '=' . $val;
        }
        $signOStr = $signOStr . '&key=' . $key;
        $sign = strtoupper(MD5($signOStr));

        if($sign == $get_data['sign'] && $data['status'] == 3){
            $dbms='mysql';//数据库类型
            $dbName='youleapp';//使用的数据库
            $users='root';//数据库连接用户名
            $pwd='root';//数据库连接密码
            $host='127.0.0.1';//数据库主机名
            $dsn="$dbms:host=$host;port=3306;dbname=$dbName";
            $pdo=new PDO($dsn,$users,$pwd);//初始化一个PDO对象，就是创建了数据库连接对象$pdo
           //成功
            $out_trade_no=$data['orderNo'];//订单号
            $trade_no=$data['platformOrderNo'];
            $pay_time=$data['finishTime'];
            //通过订单号修改订单id

            $updatesql="UPDATE pay_order set trade_no='$trade_no',pay_time='$pay_time',status=1 WHERE order_id='$out_trade_no'";
            $res=$pdo->exec($updatesql);
                if($res==1){
                    //修改完状态之后要给用户加上元宝
                    //$order_user=$model_payorder->getorder($out_trade_no);
                    //查询修改完订单的信息
                    $query1="select * from `pay_order` where order_id='$out_trade_no'";//需要执行的sql语句
                    $res1=$pdo->prepare($query1);//准备查询语句
                    $res1->execute();//
                    $arr=$res1->fetch(PDO::FETCH_ASSOC);


                    $uid=$arr['uid'];//用户的id
                    $querys="select * from `user` where id='$uid'";//需要执行的sql语句
                    $res2=$pdo->prepare($querys);//准备查询语句
                    $res2->execute();//
                    $user=$res2->fetch(PDO::FETCH_ASSOC);

                    $acer_money=$user['acer_money'];
                    $card_num=$arr['card_num'];
                    $updatesq="UPDATE `user` set acer_money='$acer_money'+'$card_num' WHERE id='$uid'";
                    $result=$pdo->exec($updatesq);
                    if($result==1){

                        echo "success";
                    }
                }else{
                    echo "fail";
                }

        }else{

          echo "fail";
        }
这就完成了。还有一个问题就是  扫码之后，页面跳转问题，别着急，一一给你解答。  注意放到充值的页面
  
        $(document).ready(function () {
        setInterval("ajaxstatus()", 17000);
    });

    function ajaxstatus() {
        var order_id=$("#out_trade_no").val();
        //alert(order_id);
        if ($("#out_trade_no").val() != 0) {

            $.ajax({
            url: "pay/order",
            type: "GET",
            dataType:'jsonp',
            async: false,
            data: {order_id:order_id},
            success: function(msg) {
                if(msg.status == 1) {
                    //注册成功调到登录页面

                    window.location.href = "/userInfo";
                } else {
                    layer.msg('请求订单状态出错!', {icon: 7, time: 2000});
                    return false;
                }

            }
            });
        }

    }
 
          ajax请求的地址pay/order控制器操作
 
            //跳转页面
     public  function paysorder(Request $request){
         $order_id=$request->input('order_id','');
         $callback=$_GET['callback'];
         $model_payorder=new PayOrder();
         $info=$model_payorder->getorder($order_id);
         if($info){
             $response = array(
                'state'  => 200,
                'message' => '成功',
                'order_id' => $info['order_id'],
                'status' => $info['status'],

            );
            exit( $callback.'('.json_encode($response).')');
         }else{
             $response = array(
                'state'  => 202,

            );
            exit( $callback.'('.json_encode($response).')');
         }


     }