原文:
微信JSAPI支付(比较详细) 关于getRrandWCPayRequest:fail_invalid appid 错误
首先微信支付需注册 微信公从平台开发 和 微信支付商户平台
关于4个密钥,如何获得:有图
AppID(应用ID) :wx000000000 (来自微信公众平台-》开发者中心-》配置项-》开发者ID-》AppID(应用ID)) AppSecret(应用密钥) :62d0000000000000000000ae (来自微信公众平台-》开发者中心-》配置项-》开发者ID-》AppSecret(应用密钥)) 商户号 :0000000 (来自微信支付商户平台-》帐号设置 -》帐号信息-》基本帐号信息-》微信支付商户号:00000000 (小知:纯数字)) 商户密钥: :0c8300000000000000000b (来自您申请微信支付商户平台时发送到你邮件里的一串码,若丢失,可重新申请,步骤:商户平台-》帐户设置-》API安全-》API密钥-》右下角有“设置密钥”)
关于代码,我将整理为一个页面:wxpay.php
header("Content-type: text/html; charset=utf-8"); $wx = new wxpay(); $payment = array( 'wxpay_AppSecret' => '0c830a000000000f12b0b',//(来自您申请微信支付商户平台时发送到你邮件里的一串码,若丢失,可重新申请,步骤:商户平台-》帐户设置-》API安全-》API密钥-》右下角有“设置密钥”) 'wxpay_AppID' => 'wx00000000b30',//(来自微信公众平台-》开发者中心-》配置项-》开发者ID-》AppID(应用ID)) 'wxpay_shanghuID' => '120000102',//(来自微信支付商户平台-》帐号设置 -》帐号信息-》基本帐号信息-》微信支付商户号:00000000 (小知:纯数字)) ); $order = array( 'order_sn' => '201505191450',//这是订单SN 'order_amount' => 0.01, //金额 ); $openid = 'oT0000000000000000GNkNM3s';//此OPENID是微信的唯一标识,需用API获得,此贴按下不表,择日发贴
$notify_url = "http://m.sgfoot.com/auth/respond.php";//必须是授权目录http://m.sgfoot.com/auth/ echo $wx->get_code($openid, $order, $payment); /** * 微信支付类 */ class wxpay { var $parameters; // cft 参数 var $payment; // 配置信息 /** * 生成支付代码 * * @param array $order * 订单信息 * @param array $payment * 支付方式信息 */ function get_code($openid, $order, $payment, $notify_url) { // 配置参数 $this->payment = $payment; //设置必填参数 //根目录url $out_trade_no = $order['order_sn'] . 'o' . rand(1, 100); $this->setParameter('body', $order['order_sn']); $this->setParameter("openid", "{$openid}");//用户唯一标识 $this->setParameter("out_trade_no", $out_trade_no);//商户订单号 $this->setParameter("total_fee", $order['order_amount'] * 100);//总金额 $this->setParameter("notify_url", "{$notify_url}");//通知地址 $this->setParameter("trade_type", "JSAPI");//交易类型 $prepay_id = $this->getPrepayId(); $jsApiParameters = $this->getParameters($prepay_id); // wxjsbridge $js = '<script type="text/javascript"> function jsApiCall(){WeixinJSBridge.invoke("getBrandWCPayRequest",'.$jsApiParameters.',function(res){if(res.err_msg == "get_brand_wcpay_request:ok"){location.href="/respond.php?code=wxpay&status=1&subject='.$out_trade_no.'"}else{window.location.href="respond.php?code=wxpay&status=0&subject="}});}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>'; $button = '<div style="text-align:center"><button class="c-btn3" type="button" onclick="callpay()" style="background:#f16681;display:inline-block;padding:5px 10px;border-radius:3px;font-size:14px;color:#fff;border:1px solid #fff;" >微信安全支付</button></div>' . $js; return $button; } function trimString($value) { $ret = null; if (null != $value) { $ret = $value; if (strlen($ret) == 0) { $ret = null; } } return $ret; } /** * 作用:产生随机字符串,不长于32位 */ public function createNoncestr( $length = 32 ) { $chars = "abcdefghijklmnopqrstuvwxyz0123456789"; $str =""; for ( $i = 0; $i < $length; $i++ ) { $str.= substr($chars, mt_rand(0, strlen($chars)-1), 1); } return $str; } /** * 作用:设置请求参数 */ function setParameter($parameter, $parameterValue) { $this->parameters[$this->trimString($parameter)] = $this->trimString($parameterValue); } /** * 作用:生成签名 */ public function getSign($Obj) { foreach ($Obj as $k => $v) { $Parameters[$k] = $v; } //签名步骤一:按字典序排序参数 ksort($Parameters); $buff = ""; foreach ($Parameters as $k => $v) { $buff .= $k . "=" . $v . "&"; } $String; if (strlen($buff) > 0) { $String = substr($buff, 0, strlen($buff)-1); } //echo '【string1】'.$String.'</br>'; //签名步骤二:在string后加入KEY $String = $String."&key=".$this->payment['wxpay_AppSecret']; //echo "【string2】".$String."</br>"; //签名步骤三:MD5加密 $String = md5($String); //echo "【string3】 ".$String."</br>"; //签名步骤四:所有字符转为大写 $result_ = strtoupper($String); //echo "【result】 ".$result_."</br>"; return $result_; } /** * 作用:以post方式提交xml到对应的接口url */ public function postXmlCurl($xml,$url,$second=30) { //初始化curl $ch = curl_init(); //设置超时 curl_setopt($ch, CURLOP_TIMEOUT, $second); //这里设置代理,如果有的话 //curl_setopt($ch,CURLOPT_PROXY, '8.8.8.8'); //curl_setopt($ch,CURLOPT_PROXYPORT, 8080); curl_setopt($ch,CURLOPT_URL, $url); curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE); curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE); //设置header curl_setopt($ch, CURLOPT_HEADER, FALSE); //要求结果为字符串且输出到屏幕上 curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE); //post提交方式 curl_setopt($ch, CURLOPT_POST, TRUE); curl_setopt($ch, CURLOPT_POSTFIELDS, $xml); //运行curl $data = curl_exec($ch); curl_close($ch); //返回结果 if($data) { curl_close($ch); return $data; } else { $error = curl_errno($ch); echo "curl出错,错误码:$error"."<br>"; echo "<a href='http://curl.haxx.se/libcurl/c/libcurl-errors.html'>错误原因查询</a></br>"; curl_close($ch); return false; } } /** * 获取prepay_id */ function getPrepayId() { //设置接口链接 $url = "https://api.mch.weixin.qq.com/pay/unifiedorder"; try { //检测必填参数 if($this->parameters["out_trade_no"] == null){ throw new Exception("缺少统一支付接口必填参数out_trade_no!"."<br>"); }elseif($this->parameters["body"] == null){ throw new Exception("缺少统一支付接口必填参数body!"."<br>"); }elseif ($this->parameters["total_fee"] == null ) { throw new Exception("缺少统一支付接口必填参数total_fee!"."<br>"); }elseif ($this->parameters["notify_url"] == null) { throw new Exception("缺少统一支付接口必填参数notify_url!"."<br>"); }elseif ($this->parameters["trade_type"] == null) { throw new Exception("缺少统一支付接口必填参数trade_type!"."<br>"); }elseif ($this->parameters["trade_type"] == "JSAPI" && $this->parameters["openid"] == NULL){ throw new Exception("统一支付接口中,缺少必填参数openid!trade_type为JSAPI时,openid为必填参数!"."<br>"); } $this->parameters["appid"] = $this->payment['wxpay_AppID'];//公众账号ID $this->parameters["mch_id"] = $this->payment['wxpay_shanghuID'];//商户号 $this->parameters["spbill_create_ip"] = $_SERVER['REMOTE_ADDR'];//终端ip $this->parameters["nonce_str"] = $this->createNoncestr();//随机字符串 $this->parameters["sign"] = $this->getSign($this->parameters);//签名 $xml = "<xml>"; foreach ($this->parameters as $key=>$val) { if (is_numeric($val)) { $xml.="<".$key.">".$val."</".$key.">"; } else { $xml.="<".$key."><![CDATA[".$val."]]></".$key.">"; } } $xml.="</xml>"; }catch (Exception $e) { die($e->getMessage()); } $response = $this->postXmlCurl($xml, $url, 30); $result = json_decode(json_encode(simplexml_load_string($response, 'SimpleXMLElement', LIBXML_NOCDATA)), true); $prepay_id = $result["prepay_id"]; return $prepay_id; } /** * 作用:设置jsapi的参数 */ public function getParameters($prepay_id) { $timeStamp = time(); $jsApiObj["appId"] = $this->payment['wxpay_AppID']; $jsApiObj["timeStamp"] = "$timeStamp"; $jsApiObj["nonceStr"] = $this->createNoncestr(); $jsApiObj["package"] = "prepay_id=$prepay_id"; $jsApiObj["signType"] = "MD5"; $jsApiObj["paySign"] = $this->getSign($jsApiObj); $this->parameters = json_encode($jsApiObj); return $this->parameters; } }
关于报 getRrandWCPayRequest:fail_invalid appid 错误。
我的代码是基于ecshop开发的。一直报错。后来单狂拿出来,整理一个文件。将代码放在根目录的auth目录下。
支付目录是 http://m.sgfoot.com/auth/wxpay.php (wxpay.php则是上面的代码)
授权目录则是 http://m.sgfoot.com/auth/
(重点说明:授权目录填写是你支付的页面在哪个目录下就填当前目录下的目录。否则出错,不会弹出支付窗口。)
(经多次测试,如果在网站的根目录下,即使授权了,也报 getRrandWCPayRequest:fail_invalid appid 错误,解决方法则是:放在某目录下,再授权此目录,如果是根目录下,无法完成支付,必须要二级目录或三级等,不知这是微信硬性规定还是BUG)
关于返回页面,如下。放在当前支付目录下。respond.php
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> </head> <body> <?php /* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ if($_REQUEST['status'] == 1 && isset($_REQUEST['subject'])) { echo '支付成功'; }else { echo "支付失败"; } ?> </body> </html>