微信小程序实现支付功能
Posted 周伯通的麦田
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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/api/payfee.php‘,//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 = $config; } /** * 生成订单号 * @author lxhui<[email protected]> * @since 1.0 * @return array */ private static function trade_no() { list($usec, $sec) = explode(" ", microtime()); $usec = substr(str_replace(‘0.‘, ‘‘, $usec), 0 ,4); $str = rand(10,99); return date("YmdHis").$usec.$str; } /** * order * @author lxhui<[email protected]> * @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 = ‘城里网商城订单‘; $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‘, ‘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 //file_put_contents(‘/Statics/log1.txt‘,$res,FILE_APPEND); $content = self::xml2array($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=‘<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>‘; }else{ $str=‘<xml><return_code><![CDATA[FAIL]]></return_code><return_msg><![CDATA[签名失败]]></return_msg></xml>‘; } 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 = $level == 1 ? "<xml>" : ‘‘; foreach($arr as $tagname => $value) { if (is_numeric($tagname)) { $tagname = $value[‘TagName‘]; unset($value[‘TagName‘]); } if(!is_array($value)) { $s .= "<{$tagname}>".(!is_numeric($value) ? ‘<![CDATA[‘ : ‘‘).$value.(!is_numeric($value) ? ‘]]>‘ : ‘‘)."</{$tagname}>"; } else { $s .= "<{$tagname}>" . $this->array2xml($value, $level + 1)."</{$tagname}>"; } } $s = preg_replace("/([\x01-\x08\x0b-\x0c\x0e-\x1f])+/", ‘ ‘, $s); return $level == 1 ? $s."</xml>" : $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
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