微信小程序实现支付功能-白红宇

微信小程序实现支付功能

阅读量：6368 次

发布时间：2019-06-23

本文共 12533 字，大约阅读时间需要 41 分钟。

小程序支付，没有封装支付代码：直接上一段可用的流程代码吧：

微信小程序支付官网文档有详细的说明，这里我就不再赘述啦：

客户端js:

wx.request({url:'https://www.xxxx.com/order/store',//改成你自己的链接header:{'Content-Type':'application/x-www-form-urlencoded'},method:'POST',success:function(res){console.log(res.data);console.log('调起支付');wx.requestPayment({'timeStamp': res.data.timeStamp,'nonceStr': res.data.nonceStr,'package': res.data.package,'signType':'MD5','paySign': res.data.paySign,'success':function(res){console.log('success');wx.showToast({title:'支付成功',icon:'success',duration:3000});},'fail':function(res){console.log('fail');},'complete':function(res){console.log('complete');}});},fail:function(res){console.log(res.data)}});

后端部分：laravel5:<?php

namespace App\Http\Controllers\Api\Order;use App\Models\Order;use App\Models\OrderGoods;use Illuminate\Http\Request;use App\Http\Controllers\Controller;use App\Models\Member;use App\Models\MemberAddress;use App\Models\Product;use App\Http\Requests;use App\Http\Requests\Interfaces\MemberCheck;use Carbon\Carbon;class OrderController extends Controller{    use MemberCheck;    public function __construct()    {        $config = array(            'appid'         => env('WECHAT_APPID'),//小程序appid            'pay_mchid'     => env('WECH_ID'),//商户号            'pay_apikey' =>env('WECHAT_KEY'),//可在微信商户后台生成支付秘钥        );        $this->config = $config;    }    /**     * 生成订单号     * @author      lxhui<772932587@qq.com>     * @since 1.0     * @return array     */    private static function trade_no() {        list($usec, $sec) = explode(" ", microtime());        $usec = substr(str_replace('0.', '', $usec), 0 ,4);        $str  = rand(10,99);        return date("YmdHis").$usec.$str;    }    /**     * order     * @author      lxhui<772932587@qq.com>     * @since 1.0     * @return array     */    public function store(Request $request )    {        \DB::beginTransaction();        try{            if( !$this->checkMember(['openid'=>$request->openid]))                return response()->json(['code'=>200,'status'=>0,'message'=>'该openid未注册']);            $config = $this->config;            $result =json_decode($request->apiParams,true);            if( !$result['addressInfo'])                return response()->json(['code'=>200,'status'=>0,'message'=>'收货地址不能为空']);            if( !$result['orderInfo'])                return response()->json(['code'=>200,'status'=>0,'message'=>'订单商品不能为空']);            $address_data = [                'openid'=>$request->openid,                'realname'=>$result['addressInfo']['userName'],                'mobile'=>$result['addressInfo']['telNumber'],                'province'=>$result['addressInfo']['provinceName'],                'city'=>$result['addressInfo']['cityName'],                'area'=>$result['addressInfo']['countyName'],                'address'=>$result['addressInfo']['detailInfo'],                'zipcode'=>$result['addressInfo']['postalCode'],            ];            $model = MemberAddress::firstOrCreate($address_data);            $productArray =$result['orderInfo'];            $products = [];            $orderProducts = [];            $productsFee = 0.0; //支付商品总价            foreach ($productArray as $val) {                $product = Product::find($val['goodsid']);                $productsFee += $product->marketprice * $val['total'];            }            // 计算价格            $shippingFee = 10.0;            $totalFee = $productsFee + $shippingFee;            // 创建订单            $ordersn = self::trade_no();            $order = new Order();            $order->ordersn = $ordersn;            $order->openid = $request->openid;            $order->price = $totalFee;            $order->goodsprice = $totalFee;            $order->createtime =time();            $order->addressid = $model->id;            $order->storeid = $request->storeid;            $order->save();            $orderid = $order->id;            $order_goods = new OrderGoods();            foreach ($productArray as $val) {                $product = Product::find($val['goodsid']);                $product=['orderid'=>$orderid,'goodsid'=>$val['goodsid'],'price'=>$product->marketprice,'total'=>$val['total'],'openid'=>$request->openid];                array_push($products, $product);            }            /* 生产预订单参数 */            $openid = $request->openid;            $body = '商城订单';            $order_sn = $ordersn;            $total_fee = $totalFee;            //统一下单参数构造            $unifiedorder = array(                'appid'            => $config['appid'],                'mch_id'        => $config['pay_mchid'],                'nonce_str'        => self::getNonceStr(),                'body'            => $body,                'out_trade_no'    => $order_sn,                'total_fee'        => $total_fee * 100,                'spbill_create_ip'    => $request->getClientIp(),                'notify_url'    => 'https://'.$_SERVER['HTTP_HOST'].'/Api/Wxpay/notify',// 支付微信回调的url，可自定义,非必须                'trade_type'    => 'JSAPI',                'openid'        => $request->openid,//'oIXoL0ZpfG3NdSE8Qa-S1GcEHJGY'//测试openid            );            $unifiedorder['sign'] = self::makeSign($unifiedorder);            //请求数据            $xmldata = self::array2xml($unifiedorder);            $url = 'https://api.mch.weixin.qq.com/pay/unifiedorder';            $res = self::curl_post_ssl($url, $xmldata);            if(!$res){                return response()->json(['code'=>200,'status'=>0,'message'=>'无法连接服务器']);                //self::return_err("Can't connect the server");            }             //file_put_contents是用来查看服务器返回的结果 测试完可以删除了,可以使用laravel自带日志功能             //file_put_contents('/public/log.txt',$res,FILE_APPEND); 　　　　　　　　\Log::info(json_encode($res));             $content = self::xml2array($res);            $result_code= isset($content['result_code']) ? $content['result_code'] : '';            $return_code = isset($content['return_code']) ? $content['return_code'] : '';            if(strval($result_code) == 'FAIL'){                return self::return_err(strval($content['err_code_des']));            }            if(strval($return_code) == 'FAIL'){                return self::return_err(strval($content['return_msg']));            }            $data = $this->pay($content['prepay_id']);            \DB::table("eshop_order_goods")->insert($products);            \DB::commit();            return response()->json(['code'=>200,'status'=>1,'message'=>'提交成功','data'=>$data]);        } catch (\Exception $e){            \DB::rollback();//事务回滚            return response()->json(['code'=>200,'status'=>0,'message'=>$e->getMessage()]);        }    }    /**     * 进行支付接口签名     * @param string $prepay_id 预支付ID(调用prepay()方法之后的返回数据中获取)     * @return  json的数据     */    public function pay($prepay_id){        $config = $this->config;        $data = array(            'appId'        => $config['appid'],            'timeStamp'    => time(),            'nonceStr'    => self::getNonceStr(),            'package'    => 'prepay_id='.$prepay_id,            'signType'    => 'MD5'        );        $data['paySign'] = self::makeSign($data);        return $data;    }    //微信支付回调验证    public function notify(){        $xml = $GLOBALS['HTTP_RAW_POST_DATA'];        // 这句file_put_contents是用来查看服务器返回的XML数据 测试完可以删除了        //file_put_contents(APP_ROOT.'/Statics/log2.txt',$res,FILE_APPEND);        //将服务器返回的XML数据转化为数组        $data = self::xml2array($xml);        // 保存微信服务器返回的签名sign        $data_sign = $data['sign'];        // sign不参与签名算法        unset($data['sign']);        $sign = self::makeSign($data);        // 判断签名是否正确  判断支付状态        if ( ($sign===$data_sign) && ($data['return_code']=='SUCCESS') && ($data['result_code']=='SUCCESS') ) {            $result = $data;            //获取服务器返回的数据            $order_sn = $data['out_trade_no'];            //订单单号            $openid = $data['openid'];                    //付款人openID            $total_fee = $data['total_fee'];            //付款金额            $transaction_id = $data['transaction_id'];     //微信支付流水号            //更新数据库            $this->updateDB($order_sn,$openid,$total_fee,$transaction_id);        }else{            $result = false;        }        // 返回状态给微信服务器        if ($result) {            $str='
     
      
      
      
      
     ';        }else{            $str='
     
      
      
      
      
     ';        }        echo $str;        return $result;    }//---------------------------------------------------------------用到的函数------------------------------------------------------------    /**     * 错误返回提示     * @param string $errMsg 错误信息     * @param string $status 错误码     * @return  json的数据     */    protected function return_err($errMsg='error',$status=0){        return response()->json(['code'=>200,'result'=>'fail','status'=>$status,'errmsg'=>$errMsg]);    }    /**     * 正确返回     * @param     array $data 要返回的数组     * @return  json的数据     */    protected function return_data($data=array()){        return response()->json(['code'=>200,'result'=>'success','status'=>1,'data'=>$data]);    }    /**     * 将一个数组转换为 XML 结构的字符串     * @param array $arr 要转换的数组     * @param int $level 节点层级, 1 为 Root.     * @return string XML 结构的字符串     */    protected function array2xml($arr, $level = 1) {        $s = $level == 1 ? "
     
      " : '';        foreach($arr as $tagname => $value) {            if (is_numeric($tagname)) {                $tagname = $value['TagName'];                unset($value['TagName']);            }            if(!is_array($value)) {                $s .= "<{
    $tagname}>".(!is_numeric($value) ? '' : '')."
      ";            } else {                $s .= "<{
    $tagname}>" . $this->array2xml($value, $level + 1)."
      ";            }        }        $s = preg_replace("/([\x01-\x08\x0b-\x0c\x0e-\x1f])+/", ' ', $s);        return $level == 1 ? $s."
     " : $s;    }    /**     * 将xml转为array     * @param  string     $xml xml字符串     * @return array    转换得到的数组     */    protected function xml2array($xml){        //禁止引用外部xml实体        libxml_disable_entity_loader(true);        $result= json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);        return $result;    }    /**     *     * 产生随机字符串，不长于32位     * @param int $length     * @return 产生的随机字符串     */    protected function getNonceStr($length = 32) {        $chars = "abcdefghijklmnopqrstuvwxyz0123456789";        $str ="";        for ( $i = 0; $i < $length; $i++ )  {            $str .= substr($chars, mt_rand(0, strlen($chars)-1), 1);        }        return $str;    }    /**     * 生成签名     * @return 签名     */    protected function makeSign($data){        //获取微信支付秘钥        $key = $this->config['pay_apikey'];        // 去空        $data=array_filter($data);        //签名步骤一：按字典序排序参数        ksort($data);        $string_a=http_build_query($data);        $string_a=urldecode($string_a);        //签名步骤二：在string后加入KEY        //$config=$this->config;        $string_sign_temp=$string_a."&key=".$key;        //签名步骤三：MD5加密        $sign = md5($string_sign_temp);        // 签名步骤四：所有字符转为大写        $result=strtoupper($sign);        return $result;    }    /**     * 微信支付发起请求     */    protected function curl_post_ssl($url, $xmldata, $second=30,$aHeader=array()){        $ch = curl_init();        //超时时间        curl_setopt($ch,CURLOPT_TIMEOUT,$second);        curl_setopt($ch,CURLOPT_RETURNTRANSFER, 1);        //这里设置代理，如果有的话        //curl_setopt($ch,CURLOPT_PROXY, '10.206.30.98');        //curl_setopt($ch,CURLOPT_PROXYPORT, 8080);        curl_setopt($ch,CURLOPT_URL,$url);        curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);        curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,false);        if( count($aHeader) >= 1 ){            curl_setopt($ch, CURLOPT_HTTPHEADER, $aHeader);        }        curl_setopt($ch,CURLOPT_POST, 1);        curl_setopt($ch,CURLOPT_POSTFIELDS,$xmldata);        $data = curl_exec($ch);        if($data){            curl_close($ch);            return $data;        }        else {            $error = curl_errno($ch);            echo "call faild, errorCode:$error\n";            curl_close($ch);            return false;        }    }}

返回结果：

{    "code": 200,    "status": 1,    "message": "提交成功",    "data": {        "appId": "wxaxxxxxxxxxxxxx",        "timeStamp": 1499497335,        "nonceStr": "qqejagkybrh9rxmyfosze71qs49ppcub",        "package": "prepay_id=wx2017070815022850d11adcb80558793405",        "signType": "MD5",        "paySign": "285BCE1F0B93701D927FA5F6CBE10E86"    }}

代码没有完美封装，博友们如果有一套好的封装，请留下共享地址哈啊

转载地址：http://qwrma.baihongyu.com/

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