***PHP基於H5的微信支付開發詳解(CI框架)

  此次總結一下用戶在微信內打開網頁時,能夠調用微信支付完成下單功能的模塊開發,也就是在微信內的H5頁面經過jsApi接口實現支付功能。固然了,微信官網上的微信支付開發文檔也講解的很詳細,而且有實現代碼可供參考,有的朋友直接看文檔就能夠本身實現此支付接口的開發了。javascript

  1、前言php

  爲什麼我還寫一篇微信支付接口的博文呢?第一,咱們必須知道,所謂的工做經驗不少都是靠總結出來的,你只有總結了更多知識,積累了更多經驗,你才能在該行業中脫穎而出,我我的以爲現在的招聘,不少都須要工做經驗(1年、3年、5年....),其實,工做時間的長久不能衡量一我的技術水平的高低,有的人一年的工做經驗能拿3年工做經驗的程序猿的工資,有的3年工做經驗的卻有可能比別人只有一年工做經驗的還低,因此說,總結才能讓本身的知識體系,經驗深度更牛逼更穩固(雖然寫一篇博文挺花費時間的);第二,寫博文分享給你們仍是挺有成就感的,首先是能讓新手從我分享的博文中能學到東西,而且能快速將博文所講解的技術運用到實際中來,因此我寫的博文基本上能讓新人快速讀懂而且容易理解,另外,技術大神的話,看到博文有講解的不對之處,還能夠指出,而且能夠交流,何樂而不爲呢,咱們須要的就是分享和交流。html

  扯遠了,直接進入該主題的詳解。java

  如今的微信支付方式有N種,看下圖,有刷卡支付、公衆號支付、掃碼支付和APP支付,另外還有支付工具的開發,本博文選擇的是公衆號支付藉口而開發進行講解,其餘幾種支付接口開發基本上思路都是同樣的,只要你能看懂我這博文所講解的基本思路,你基本上也能獨自開發其餘幾個支付接口。redis

  2、思路詳解數據庫

  咱們能夠拿微信支付接口文檔裏的業務流程時序圖看看,以下圖,基本思路是這樣子:首先在後臺生成一個連接,展現給用戶讓用戶點擊(例如頁面上有微信支付的按鈕),用戶點擊按鈕後,網站後臺會根據訂單的相關信息生成一個支付訂單,此時會調用統一下單接口,對微信支付系統發起請求,而微信支付系統受到請求後,會根據請求過來的數據,生成一個 預支付交易會話標識(prepay_id,就是經過這個來識別該訂單的),咱們的網站收到微信支付系統的響應後,會獲得prepay_id,而後經過本身構造微信支付所須要的參數,接着將支付所需參數返回給客戶端,用戶此時可能會有一個訂單信息頁,會有一個按鈕,點擊支付,此時會調用JSAPI接口對微信支付系統發起 請求支付,微信支付系統檢查了請求的相關合法性以後,就會提示輸入密碼,用戶此時輸入密碼確認,微信支付系統會對其進行驗證,經過的話會返回支付結果,而後微信跳轉會H5頁面,這其中有一步是異步通知網站支付結果,咱們網站須要對此進行處理(好比說異步支付結果經過後,須要更新數據表或者訂單信息,例如標誌用戶已支付該訂單了,同時也須要更新訂單日誌,防止用戶重複提交訂單)。json

  3、代碼講解api

  本次開發環境用的是php5.6 + MySQL + Redis + Linux + Apache,所選用的框架的CI框架(這些環境不必定須要和個人一致,框架也能夠本身選擇,反正本身稍微修改下代碼就能移植過去了)。數組

  微信支付接口的開發代碼我已經提早寫好了,在這裏我對其進行分析講解,方便你們能輕鬆理解,固然,假如你有必定的基礎,直接看代碼就能理清全部流程了,而且個人代碼基本上都寫上了註釋(對於新手來講,這一點比微信文檔所提供的代碼好一點)。緩存

  一、構造一個連接展現給用戶

  這裏咱們提早須要知道一個點,那就是請求統一下單接口須要微信用戶的openid(詳情可看這https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_1),而獲取openid須要先獲取code(詳情可看這微信登陸接口),因此咱們須要構造一個獲取code的URL:

複製代碼
Wxpay.php文件:
<?php defined('BASEPATH') OR exit('No direct script access allowed'); class Wxpay extends MY_Controller { public function __construct() { parent::__construct(); $this->load->model('wxpay_model'); //$this->load->model('wxpay'); } public function index() { //微信支付 $this->smarty['wxPayUrl'] = $this->wxpay_model->retWxPayUrl(); $this->displayView('wxpay/index.tpl'); } }
複製代碼

  在這先看看model裏所寫的幾個類:model裏有幾個類:微信支付類、統一下單接口類、響應型接口基類、請求型接口基類、全部接口基類、配置類。爲什麼要分那麼多類而不在一個類裏實現全部的方法的,由於,這樣看起來代碼邏輯清晰,哪一個類該幹嗎就幹嗎。

  這裏我直接附上model的代碼了,裏面基本上每個類每個方法甚至每一行代碼都會有解釋的了,這裏我就不對其展開一句句分析了:

  

<?php defined('BASEPATH') OR exit('No direct script access allowed'); class Wxpay_model extends CI_Model { public function __construct() { parent::__construct(); } /** * 返回能夠得到微信code的URL (用以獲取openid) * @return [type] [description] */
    public function retWxPayUrl() { $jsApi = new JsApi_handle(); return $jsApi->createOauthUrlForCode(); } /** * 微信jsapi點擊支付 * @param [type] $data [description] * @return [type] [description] */
    public function wxPayJsApi($data) { $jsApi = new JsApi_handle(); //統一下單接口所需數據
        $payData = $this->returnData($data); //獲取code碼,用以獲取openid
        $code = $_GET['code']; $jsApi->setCode($code); //經過code獲取openid
        $openid = $jsApi->getOpenId(); $unifiedOrderResult = null; if ($openid != null) { //取得統一下單接口返回的數據
            $unifiedOrderResult = $this->getResult($payData, 'JSAPI', $openid); //獲取訂單接口狀態
            $returnMessage = $this->returnMessage($unifiedOrder, 'prepay_id'); if ($returnMessage['resultCode']) { $jsApi->setPrepayId($retuenMessage['resultField']); //取得wxjsapi接口所須要的數據
                $returnMessage['resultData'] = $jsApi->getParams(); } return $returnMessage; } } /** * 統一下單接口所須要的數據 * @param [type] $data [description] * @return [type] [description] */
    public function returnData($data) { $payData['sn'] = $data['sn']; $payData['body'] = $data['goods_name']; $payData['out_trade_no'] = $data['order_no']; $payData['total_fee'] = $data['fee']; $payData['attach'] = $data['attach']; return $payData; } /** * 返回統一下單接口結果 (參考https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_1) * @param [type] $payData [description] * @param [type] $trade_type [description] * @param [type] $openid [description] * @return [type] [description] */
    public function getResult($payData, $trade_type, $openid = null) { $unifiedOrder = new UnifiedOrder_handle(); if ($opneid != null) { $unifiedOrder->setParam('openid', $openid); } $unifiedOrder->setParam('body', $payData['body']);  //商品描述
        $unifiedOrder->setParam('out_trade_no', $payData['out_trade_no']); //商戶訂單號
        $unifiedOrder->setParam('total_fee', $payData['total_fee']);    //總金額
        $unifiedOrder->setParam('attach', $payData['attach']);  //附加數據
        $unifiedOrder->setParam('notify_url', base_url('/Wxpay/pay_callback'));//通知地址
        $unifiedOrder->setParam('trade_type', $trade_type); //交易類型 //非必填參數,商戶可根據實際狀況選填 //$unifiedOrder->setParam("sub_mch_id","XXXX");//子商戶號 //$unifiedOrder->setParam("device_info","XXXX");//設備號 //$unifiedOrder->setParam("time_start","XXXX");//交易起始時間 //$unifiedOrder->setParam("time_expire","XXXX");//交易結束時間 //$unifiedOrder->setParam("goods_tag","XXXX");//商品標記 //$unifiedOrder->setParam("product_id","XXXX");//商品ID
        
        return $unifiedOrder->getResult(); } /** * 返回微信訂單狀態 */
    public function returnMessage($unifiedOrderResult,$field){ $arrMessage=array("resultCode"=>0,"resultType"=>"獲取錯誤","resultMsg"=>"該字段爲空"); if($unifiedOrderResult==null){ $arrMessage["resultType"]="未獲取權限"; $arrMessage["resultMsg"]="請從新打開頁面"; }elseif ($unifiedOrderResult["return_code"] == "FAIL") { $arrMessage["resultType"]="網絡錯誤"; $arrMessage["resultMsg"]=$unifiedOrderResult['return_msg']; } elseif($unifiedOrderResult["result_code"] == "FAIL") { $arrMessage["resultType"]="訂單錯誤"; $arrMessage["resultMsg"]=$unifiedOrderResult['err_code_des']; } elseif($unifiedOrderResult[$field] != NULL) { $arrMessage["resultCode"]=1; $arrMessage["resultType"]="生成訂單"; $arrMessage["resultMsg"]="OK"; $arrMessage["resultField"] = $unifiedOrderResult[$field]; } return $arrMessage; } /** * 微信回調接口返回 驗證簽名並回應微信 * @param [type] $xml [description] * @return [type] [description] */
    public function wxPayNotify($xml) { $notify = new Wxpay_server(); $notify->saveData($xml); //驗證簽名,並回復微信 //對後臺通知交互時,若是微信收到商戶的應答不是成功或者超時,微信認爲通知失敗 //微信會經過必定的策略(如30分鐘共8次),按期從新發起通知
        if ($notify->checkSign() == false) { $notify->setReturnParameter("return_code","FAIL");//返回狀態碼
            $notify->setReturnParameter("return_msg","簽名失敗");//返回信息
        } else { $notify->checkSign=TRUE; $notify->setReturnParameter("return_code","SUCCESS");//設置返回碼
 } return $notify; } } /** * JSAPI支付——H5網頁端調起支付接口 */
class JsApi_handle extends JsApi_common { public $code;//code碼,用以獲取openid
    public $openid;//用戶的openid
    public $parameters;//jsapi參數,格式爲json
    public $prepay_id;//使用統一支付接口獲得的預支付id
    public $curl_timeout;//curl超時時間

    function __construct() { //設置curl超時時間
        $this->curl_timeout = WxPayConf::CURL_TIMEOUT; } /** * 生成獲取code的URL * @return [type] [description] */
    public function createOauthUrlForCode() { //重定向URL
        $redirectUrl = "http://www.itcen.cn/wxpay/confirm/".$orderId."?showwxpaytitle=1"; $urlParams['appid'] = WxPayConf::APPID; $urlParams['redirect_uri'] = $redirectUrl; $urlParams['response_type'] = 'code'; $urlParams['scope'] = 'snsapi_base'; $urlParams['state'] = "STATE"."#wechat_redirect"; //拼接字符串
        $queryString = $this->ToUrlParams($urlParams, false); return "https://open.weixin.qq.com/connect/oauth2/authorize?".$queryString; } /** * 設置code * @param [type] $code [description] */
    public function setCode($code) { $this->code = $code; } /** * 做用:設置prepay_id */
    public function setPrepayId($prepayId) { $this->prepay_id = $prepayId; } /** * 做用:獲取jsapi的參數 */
    public function getParams() { $jsApiObj["appId"] = WxPayConf::APPID; $timeStamp = time(); $jsApiObj["timeStamp"] = "$timeStamp"; $jsApiObj["nonceStr"] = $this->createNoncestr(); $jsApiObj["package"] = "prepay_id=$this->prepay_id"; $jsApiObj["signType"] = "MD5"; $jsApiObj["paySign"] = $this->getSign($jsApiObj); $this->parameters = json_encode($jsApiObj); return $this->parameters; } /** * 經過curl 向微信提交code 用以獲取openid * @return [type] [description] */
    public function getOpenId() { //建立openid 的連接
        $url = $this->createOauthUrlForOpenid(); //初始化
        $ch = curl_init(); curl_setopt($ch, CURL_TIMEOUT, $this->curl_timeout); curl_setopt($ch, CURL_URL, $url); curl_setopt($ch, CURL_SSL_VERIFYPEER, FALSE); curl_setopt($ch, CURL_SSL_VERIFYHOST, FALSE); curl_setopt($ch, CURL_HEADER, FALSE); curl_setopt($ch, CURL_RETURNTRANSFER, TRUE); //執行curl
        $res = curl_exec($ch); curl_close($ch); //取出openid
        $data = json_decode($res); if (isset($data['openid'])) { $this->openid = $data['openid']; } else { return null; } return $this->openid; } /** * 生成能夠獲取openid 的URL * @return [type] [description] */
    public function createOauthUrlForOpenid() { $urlParams['appid'] = WxPayConf::APPID; $urlParams['secret'] = WxPayConf::APPSECRET; $urlParams['code'] = $this->code; $urlParams['grant_type'] = "authorization_code"; $queryString = $this->ToUrlParams($urlParams, false); return "https://api.weixin.qq.com/sns/oauth2/access_token?".$queryString; } } /** * 統一下單接口類 */
class UnifiedOrder_handle extends Wxpay_client_handle { public function __construct() { //設置接口連接
        $this->url = "https://api.mch.weixin.qq.com/pay/unifiedorder"; //設置curl超時時間
        $this->curl_timeout = WxPayConf::CURL_TIMEOUT; } } /** * 響應型接口基類 */
class Wxpay_server_handle extends JsApi_common{ public $data; //接收到的數據,類型爲關聯數組
    public $returnParams;   //返回參數,類型爲關聯數組

    /** * 將微信請求的xml轉換成關聯數組 * @param [type] $xml [description] * @return [type] [description] */
    public function saveData($xml) { $this->data = $this->xmlToArray($xml); } /** * 驗證簽名 * @return [type] [description] */
    public function checkSign() { $tmpData = $this->data; unset($temData['sign']); $sign = $this->getSign($tmpData); if ($this->data['sign'] == $sign) { return true; } return false; } /** * 設置返回微信的xml數據 */
    function setReturnParameter($parameter, $parameterValue) { $this->returnParameters[$this->trimString($parameter)] = $this->trimString($parameterValue); } /** * 將xml數據返回微信 */
    function returnXml() { $returnXml = $this->createXml(); return $returnXml; } } /** * 請求型接口的基類 */
class Wxpay_client_handle extends JsApi_common{ public $params; //請求參數,類型爲關聯數組
    public $response; //微信返回的響應
    public $result; //返回參數,類型類關聯數組
    public $url; //接口連接
    public $curl_timeout; //curl超時時間

    /** * 設置請求參數 * @param [type] $param [description] * @param [type] $paramValue [description] */
    public function setParam($param, $paramValue) { $this->params[$this->tirmString($param)] = $this->trimString($paramValue); } /** * 獲取結果,默認不使用證書 * @return [type] [description] */
    public function getResult() { $this->postxml(); $this->result = $this->xmlToArray($this->response); return $this->result; } /** * post請求xml * @return [type] [description] */
    public function postxml() { $xml = $this->createXml(); $this->response = $this->postXmlCurl($xml, $this->curl, $this->curl_timeout); return $this->response; } public function createXml() { $this->params['appid'] = WxPayConf::APPID; //公衆號ID
        $this->params['mch_id'] = WxPayConf::MCHID; //商戶號
        $this->params['nonce_str'] = $this->createNoncestr();   //隨機字符串
        $this->params['sign'] = $this->getSign($this->params);  //簽名
        
        return $this->arrayToXml($this->params); } } /** * 全部接口的基類 */
class JsApi_common { function __construct() { } public function trimString($value) { $ret = null; if (null != $value) { $ret = trim($value); if (strlen($ret) == 0) { $ret = null; } } return $ret; } /** * 產生隨機字符串,不長於32位 * @param integer $length [description] * @return [type] [description] */
    public function createNoncestr($length = 32) { $chars = "abcdefghijklmnopqrstuvwxyz0123456789"; $str = ''; for ($i = 0; $i < $length; $i++) { $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1); } return $str; } /** * 格式化參數 拼接字符串,簽名過程須要使用 * @param [type] $urlParams [description] * @param [type] $needUrlencode [description] */
    public function ToUrlParams($urlParams, $needUrlencode) { $buff = ""; ksort($urlParams); foreach ($urlParams as $k => $v) { if($needUrlencode) $v = urlencode($v); $buff .= $k .'='. $v .'&'; } $reqString = ''; if (strlen($buff) > 0) { $reqString = substr($buff, 0, strlen($buff) - 1); } return $reqString; } /** * 生成簽名 * @param [type] $params [description] * @return [type] [description] */
    public function getSign($obj) { foreach ($obj as $k => $v) { $params[$k] = $v; } //簽名步驟一:按字典序排序參數
        ksort($params); $str = $this->ToUrlParams($params, false); //簽名步驟二:在$str後加入key
        $str = $str."$key=".WxPayConf::KEY; //簽名步驟三:md5加密
        $str = md5($str); //簽名步驟四:全部字符轉爲大寫
        $result = strtoupper($str); return $result; } /** * array轉xml * @param [type] $arr [description] * @return [type] [description] */
    public function arrayToXml($arr) { $xml = "<xml>"; foreach ($arr as $k => $v) { if (is_numeric($val)) { $xml .= "<".$key.">".$key."</".$key.">"; } else { $xml .= "<".$key."><![CDATA[".$val."]]></".$key.">"; } } $xml .= "</xml>"; return $xml; } /** * 將xml轉爲array * @param [type] $xml [description] * @return [type] [description] */
    public function xmlToArray($xml) { $arr = json_decode(json_encode(simplexml_load_string($xml, 'SinpleXMLElement', LIBXML_NOCDATA)), true); return $arr; } /** * 以post方式提交xml到對應的接口 * @param [type] $xml [description] * @param [type] $url [description] * @param integer $second [description] * @return [type] [description] */
    public function postXmlCurl($xml, $url, $second = 30) { //初始化curl
        $ch = curl_init(); //設置超時
        curl_setopt($ch, CURL_TIMEOUT, $second); curl_setopt($ch, CURL_URL, $url); //這裏設置代理,若是有的話 //curl_setopt($ch,CURLOPT_PROXY, '8.8.8.8'); //curl_setopt($ch,CURLOPT_PROXYPORT, 8080);
        curl_setopt($ch, CURL_SSL_VERIFYHOST, FALSE); curl_setopt($ch, CURL_SSL_VERIFYPEER, FALSE); //設置header
        curl_setopt($ch, CURL_HEADER, FALSE); //要求結果爲字符串且輸出到屏幕上
        curl_setopt($ch, CURL_RETURNTRANSFER, TRUE); //以post方式提交
        curl_setopt($ch, CURL_POST, TRUE); curl_setopt($ch, CURL_POSTFIELDS, $xml); //執行curl
        $res = curl_exec($ch); if ($res) { curl_close($ch); return $res; } else { $error = curl_errno($ch); echo "curl出錯,錯誤碼:$error"."<br>"; echo "<a href='http://curl.haxx.se/libcurl/c/libcurl-errors.html'>錯誤緣由查詢</a></br>"; curl_close($ch); return false; } } } /** * 配置類 */
class WxPayConf { //微信公衆號身份的惟一標識。
    const APPID = 'wx654a22c6423213b7'; //受理商ID,身份標識
    const MCHID = '10043241'; const MCHNAME = 'KellyCen的博客'; //商戶支付密鑰Key。
    const KEY = '0000000000000000000000000000000'; //JSAPI接口中獲取openid
    const APPSECRET = '000000000000000000000000000'; //證書路徑,注意應該填寫絕對路徑
    const SSLCERT_PATH = '/home/WxPayCacert/apiclient_cert.pem'; const SSLKEY_PATH = '/home/WxPayCacert/apiclient_key.pem'; const SSLCA_PATH = '/home/WxPayCacert/rootca.pem'; //本例程經過curl使用HTTP POST方法,此處可修改其超時時間,默認爲30秒
    const CURL_TIMEOUT = 30; } Wxpay_model.php
Wxpay_model.php

 

  獲取到code的URL後,將其分配到頁面去,讓用戶去點擊,用戶進行點擊後,就會從微信服務器獲取到code,而後回調到redirect_uri所指的地址去。

  二、獲取到code後,會回調到redirect_uri所指向的地址去,這裏是到了/Wxpay/confirm/,看看這個confirm方法是打算幹嗎的

複製代碼
   /**
     * 手機端微信支付,此處是受權獲取到code時的回調地址
     * @param  [type] $orderId 訂單編號id
     * @return [type]          [description]
     */ 
    public function confirm($orderId) {
        //先確認用戶是否登陸
        $this->ensureLogin();
        //經過訂單編號獲取訂單數據
        $order = $this->wxpay_model->get($orderId);
        //驗證訂單是不是當前用戶
        $this->_verifyUser($order);

        //取得支付所須要的訂單數據
        $orderData = $this->returnOrderData[$orderId];
        //取得jsApi所須要的數據
        $wxJsApiData = $this->wxpay_model->wxPayJsApi($orderData);
        //將數據分配到模板去,在js裏使用
        $this->smartyData['wxJsApiData'] = json_encode($wxJsApiData, JSON_UNESCAPED_UNICODE);
        $this->smartyData['order'] = $orderData;
        $this->displayView('wxpay/confirm.tpl');
        
    }
複製代碼

  這一步開始去取JSAPI支付接口所須要的數據了,這一步算是最主要的一步,這裏還會調用統一下單接口獲取到prepay_id,咱們跳到

  $this->wxpay_model->wxPayJsApi($orderData) 看看:

複製代碼
/**
     * 微信jsapi點擊支付
     * @param  [type] $data [description]
     * @return [type]       [description]
     */
    public function wxPayJsApi($data) {
        $jsApi = new JsApi_handle();
        //統一下單接口所需數據
        $payData = $this->returnData($data);
        //獲取code碼,用以獲取openid
        $code = $_GET['code'];
        $jsApi->setCode($code);
        //經過code獲取openid
        $openid = $jsApi->getOpenId();
        
        $unifiedOrderResult = null;
        if ($openid != null) {
            //取得統一下單接口返回的數據
            $unifiedOrderResult = $this->getResult($payData, 'JSAPI', $openid);
            //獲取訂單接口狀態
            $returnMessage = $this->returnMessage($unifiedOrder, 'prepay_id');
            if ($returnMessage['resultCode']) {
                $jsApi->setPrepayId($retuenMessage['resultField']);
                //取得wxjsapi接口所須要的數據
                $returnMessage['resultData'] = $jsApi->getParams();
            } 

            return $returnMessage;
        }
    }
複製代碼

  這裏首先是取得下單接口所須要的數據;

  接着獲取到code碼,經過code碼獲取到openid;

  而後調用統一下單接口,取得下單接口的響應數據,即prepay_id;

  最後取得微信支付JSAPI所須要的數據。

  這就是上面這個方法所要作的事情,取到數據後,會將數據分配到模板裏,而後根據官方文檔所給的參考格式將其放在js裏,以下面的代碼:

複製代碼
<!doctype html>  
<html>  
<head lang="zh-CN">  
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!-- Make sure that we can test against real IE8 -->
<meta http-equiv="X-UA-Compatible" content="IE=8" />
<title></title>
</head>
<body>

<a href="javascript:callpay();" id="btnOrder">點擊支付</a>
</body>  
<script type="text/javascript">
    //將數據付給js變量
    var wxJsApiData = {$wxJsApiData};
    function onBridgeReady()
        {
            //格式參考官方文檔 https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=7_7&index=6
            WeixinJSBridge.invoke(
                'getBrandWCPayRequest',
                $.parseJSON(wxJsApiData.resultData),
                function(res){
                    if(res.err_msg == "get_brand_wcpay_request:ok" ){
                        window.location.href="/wxpay/paysuccess/"+{$order.sn}; 
                    }

                } 
            );
        }
        function callpay()
        { 
            if(!wxJsApiData.resultCode){
                alert(wxJsApiData.resultType+","+wxJsApiData.resultMsg+"!");
                return false;
            }
            if (typeof WeixinJSBridge == "undefined"){
                if( document.addEventListener ){
                    document.addEventListener('WeixinJSBridgeReady', onBridgeReady, false);
                }else if (document.attachEvent){
                    document.attachEvent('WeixinJSBridgeReady', onBridgeReady);
                    document.attachEvent('onWeixinJSBridgeReady', onBridgeReady);
                }
            }else{
                onBridgeReady();
            }
        }
</script>
</html>
複製代碼

  三、此時用戶只須要點擊支付,就能夠開始進入支付界面了,接着就是輸入密碼,確認,最後會提示支付成功,緊接着網站會提供一個支付成功跳轉頁面。相似微信文檔裏所提供的圖片這樣,這裏我就直接截取文檔裏的案例圖了:

  四、這裏還有一步,就是微信支付系統會異步通知網站後臺用戶的支付結果。在獲取統一下單數據時,咱們指定了一個通知地址,在model裏能夠找到

  支付成功後,微信支付系統會將支付結果異步發送到此地址上/Wxpay/pay_callback/ ,咱們來看一下這個方法

複製代碼
/**
     * 支付回調接口
     * @return [type] [description]
     */
    public function pay_callback() {
        $postData = '';
        if (file_get_contents("php://input")) {
            $postData = file_get_contents("php://input");
        } else {
            return;
        }
        $payInfo = array();
        $notify = $this->wxpay_model->wxPayNotify($postData);

        if ($notify->checkSign == TRUE) {
            if ($notify->data['return_code'] == 'FAIL') {
                $payInfo['status'] = FALSE;
                $payInfo['msg'] = '通訊出錯';
            } elseif ($notify->data['result_code'] == 'FAIL') {
                $payInfo['status'] = FALSE;
                $payInfo['msg'] = '業務出錯';
            } else {
                $payInfo['status'] = TRUE;
                $payInfo['msg'] = '支付成功';
                $payInfo['sn']=substr($notify->data['out_trade_no'],8);
                $payInfo['order_no'] = $notify->data['out_trade_no'];
                $payInfo['platform_no']=$notify->data['transaction_id'];
                $payInfo['attach']=$notify->data['attach'];
                $payInfo['fee']=$notify->data['cash_fee'];
                $payInfo['currency']=$notify->data['fee_type'];
                $payInfo['user_sign']=$notify->data['openid'];
            }
        }
        $returnXml = $notify->returnXml();

        echo $returnXml;

        $this->load->library('RedisCache');
        if($payInfo['status']){
           //這裏要記錄到日誌處理(略)
            $this->model->order->onPaySuccess($payInfo['sn'], $payInfo['order_no'], $payInfo['platform_no'],'', $payInfo['user_sign'], $payInfo);
            $this->redis->RedisCache->set('order:payNo:'.$payInfo['order_no'],'OK',5000);
        }else{
           //這裏要記錄到日誌處理(略)
            $this->model->order->onPayFailure($payInfo['sn'], $payInfo['order_no'], $payInfo['platform_no'],'', $payInfo['user_sign'], $payInfo, '訂單支付失敗 ['.$payInfo['msg'].']');
        }
    }
複製代碼

  這方法就是對支付是否成功,對網站的支付相關邏輯進行後續處理,例如假如支付失敗,就須要記錄日誌裏說明這次交易失敗,或者是作某一些邏輯處理,而支付成功又該如何作處理,等等。

  這裏咱們就分析下這個方法 $this->wxpay_model->wxPayNotify($postData); 對異步返回的數據進行安全性校驗,例如驗證簽名,看看model裏的這個方法:

複製代碼
/**
     * 微信回調接口返回  驗證簽名並回應微信
     * @param  [type] $xml [description]
     * @return [type]      [description]
     */
    public function wxPayNotify($xml) {
        $notify = new Wxpay_server();
        $notify->saveData($xml);
        //驗證簽名,並回復微信
        //對後臺通知交互時,若是微信收到商戶的應答不是成功或者超時,微信認爲通知失敗
        //微信會經過必定的策略(如30分鐘共8次),按期從新發起通知
        if ($notify->checkSign() == false) {
            $notify->setReturnParameter("return_code","FAIL");//返回狀態碼
            $notify->setReturnParameter("return_msg","簽名失敗");//返回信息
        } else {
            $notify->checkSign=TRUE;
            $notify->setReturnParameter("return_code","SUCCESS");//設置返回碼
        }

        return $notify;
    }
複製代碼

  若是驗證經過,則就開始進行交易成功或者失敗時所要作的邏輯處理了,這邏輯處理的代碼我就不寫了,由於每個網站的處理方式都不同,我這裏是這樣處理的,我把思路寫下,方便不懂的朋友能夠按着個人思路去完善後續的處理:首先是查看數據庫裏的訂單日誌表,看這筆交易以前是否已經交易過了,交易過就不用再更新數據表了,若是沒交易過,就會將以前存在redis的訂單數據給取出來,再將這些數據插入到訂單日誌表裏,差很少就這樣處理。

 

  好了,基於H5的微信支付接口開發詳解就講到這裏,若是你認真理清博文裏所講解的思路,本身基本上也能夠嘗試開發此接口了,同時只要會了這個,你也基本上能夠開發二維碼支付,刷卡支付等等的支付接口。

     這裏我附上這次開發中的完整代碼供你們閱讀:

<?php defined('BASEPATH') OR exit('No direct script access allowed'); class Wxpay extends MY_Controller { public function __construct() { parent::__construct(); $this->load->model('wxpay_model'); //$this->load->model('wxpay');
 } public function index() { //微信支付
        $this->smarty['wxPayUrl'] = $this->wxpay_model->retWxPayUrl(); $this->displayView('wxpay/index.tpl'); } /** * 手機端微信支付,此處是受權獲取到code時的回調地址 * @param [type] $orderId 訂單編號id * @return [type] [description] */ 
    public function confirm($orderId) { //先確認用戶是否登陸
        $this->ensureLogin(); //經過訂單編號獲取訂單數據
        $order = $this->wxpay_model->get($orderId); //驗證訂單是不是當前用戶
        $this->_verifyUser($order); //取得支付所須要的訂單數據
        $orderData = $this->returnOrderData[$orderId]; //取得jsApi所須要的數據
        $wxJsApiData = $this->wxpay_model->wxPayJsApi($orderData); //將數據分配到模板去,在js裏使用
        $this->smartyData['wxJsApiData'] = json_encode($wxJsApiData, JSON_UNESCAPED_UNICODE); $this->smartyData['order'] = $orderData; $this->displayView('wxpay/confirm.tpl'); } /** * 支付回調接口 * @return [type] [description] */
    public function pay_callback() { $postData = ''; if (file_get_contents("php://input")) { $postData = file_get_contents("php://input"); } else { return; } $payInfo = array(); $notify = $this->wxpay_model->wxPayNotify($postData); if ($notify->checkSign == TRUE) { if ($notify->data['return_code'] == 'FAIL') { $payInfo['status'] = FALSE; $payInfo['msg'] = '通訊出錯'; } elseif ($notify->data['result_code'] == 'FAIL') { $payInfo['status'] = FALSE; $payInfo['msg'] = '業務出錯'; } else { $payInfo['status'] = TRUE; $payInfo['msg'] = '支付成功'; $payInfo['sn']=substr($notify->data['out_trade_no'],8); $payInfo['order_no'] = $notify->data['out_trade_no']; $payInfo['platform_no']=$notify->data['transaction_id']; $payInfo['attach']=$notify->data['attach']; $payInfo['fee']=$notify->data['cash_fee']; $payInfo['currency']=$notify->data['fee_type']; $payInfo['user_sign']=$notify->data['openid']; } } $returnXml = $notify->returnXml(); echo $returnXml; $this->load->library('RedisCache'); if($payInfo['status']){ //這裏要記錄到日誌處理(略)
            $this->model->order->onPaySuccess($payInfo['sn'], $payInfo['order_no'], $payInfo['platform_no'],'', $payInfo['user_sign'], $payInfo); $this->redis->RedisCache->set('order:payNo:'.$payInfo['order_no'],'OK',5000); }else{ //這裏要記錄到日誌處理(略)
            $this->model->order->onPayFailure($payInfo['sn'], $payInfo['order_no'], $payInfo['platform_no'],'', $payInfo['user_sign'], $payInfo, '訂單支付失敗 ['.$payInfo['msg'].']'); } } /** * 返回支付所須要的數據 * @param [type] $orderId 訂單號 * @param string $data 訂單數據,當$data數據存在時刷新$orderData緩存,由於訂單號不惟一 * @return [type] [description] */
    public function returnOrderData($orderId, $data = '') { //獲取訂單數據
        $order = $this->wxpay_model->get($orderId); if (0 === count($order)) return false; if (empty($data)) { $this->load->library('RedisCache'); //取得緩存在redis的訂單數據
            $orderData = $this->rediscache->getJson("order:orderData:".$orderId); if (empty($orderData)) { //若是redis裏沒有,則直接讀數據庫取
                $this->load->model('order_model'); $order = $this->order_model->get($orderId); if (0 === count($order)) { return false; } $data = $order; } else { //若是redis裏面有的話,直接返回數據
                return $orderData; } } //支付前緩存所須要的數據
        $orderData['id'] = $data['id']; $orderData['fee'] = $data['fee']; //支付平臺須要的數據
        $orderData['user_id'] = $data['user_id']; $orderData['sn'] = $data['cn']; //這是惟一編號
        $orderData['order_no'] = substr(md5($data['sn'].$data['fee']), 8, 8).$data['sn']; $orderData['fee'] = $data['fee']; $orderData['time'] = $data['time']; $orderData['goods_name'] = $data['goods_name']; $orderData['attach'] = $data['attach']; //將數據緩存到redis裏面
        $this->rediscache->set("order:orderData:".$orderId, $orderData, 3600*24); //作個標識緩存到redis,用以判斷該訂單是否已經支付了
        $this->rediscache->set("order:payNo:".$orderData['order_no'], "NO", 3600*24); return $orderData; } private function _verifyUser($order) { if (empty($order)) show_404(); if (0 === count($order)) show_404(); //判斷訂單表裏的用戶id是不是當前登陸者的id
        if ($order['user_id'] == $this->uid) return; show_error('只能查看本身的訂單'); } } 控制器:Wxpay.php
控制器:Wxpay.php
<?php defined('BASEPATH') OR exit('No direct script access allowed'); class Wxpay_model extends CI_Model { public function __construct() { parent::__construct(); } /** * 返回能夠得到微信code的URL (用以獲取openid) * @return [type] [description] */
    public function retWxPayUrl() { $jsApi = new JsApi_handle(); return $jsApi->createOauthUrlForCode(); } /** * 微信jsapi點擊支付 * @param [type] $data [description] * @return [type] [description] */
    public function wxPayJsApi($data) { $jsApi = new JsApi_handle(); //統一下單接口所需數據
        $payData = $this->returnData($data); //獲取code碼,用以獲取openid
        $code = $_GET['code']; $jsApi->setCode($code); //經過code獲取openid
        $openid = $jsApi->getOpenId(); $unifiedOrderResult = null; if ($openid != null) { //取得統一下單接口返回的數據
            $unifiedOrderResult = $this->getResult($payData, 'JSAPI', $openid); //獲取訂單接口狀態
            $returnMessage = $this->returnMessage($unifiedOrder, 'prepay_id'); if ($returnMessage['resultCode']) { $jsApi->setPrepayId($retuenMessage['resultField']); //取得wxjsapi接口所須要的數據
                $returnMessage['resultData'] = $jsApi->getParams(); } return $returnMessage; } } /** * 統一下單接口所須要的數據 * @param [type] $data [description] * @return [type] [description] */
    public function returnData($data) { $payData['sn'] = $data['sn']; $payData['body'] = $data['goods_name']; $payData['out_trade_no'] = $data['order_no']; $payData['total_fee'] = $data['fee']; $payData['attach'] = $data['attach']; return $payData; } /** * 返回統一下單接口結果 (參考https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_1) * @param [type] $payData [description] * @param [type] $trade_type [description] * @param [type] $openid [description] * @return [type] [description] */
    public function getResult($payData, $trade_type, $openid = null) { $unifiedOrder = new UnifiedOrder_handle(); if ($opneid != null) { $unifiedOrder->setParam('openid', $openid); } $unifiedOrder->setParam('body', $payData['body']);  //商品描述
        $unifiedOrder->setParam('out_trade_no', $payData['out_trade_no']); //商戶訂單號
        $unifiedOrder->setParam('total_fee', $payData['total_fee']);    //總金額
        $unifiedOrder->setParam('attach', $payData['attach']);  //附加數據
        $unifiedOrder->setParam('notify_url', base_url('/Wxpay/pay_callback'));//通知地址
        $unifiedOrder->setParam('trade_type', $trade_type); //交易類型 //非必填參數,商戶可根據實際狀況選填 //$unifiedOrder->setParam("sub_mch_id","XXXX");//子商戶號 //$unifiedOrder->setParam("device_info","XXXX");//設備號 //$unifiedOrder->setParam("time_start","XXXX");//交易起始時間 //$unifiedOrder->setParam("time_expire","XXXX");//交易結束時間 //$unifiedOrder->setParam("goods_tag","XXXX");//商品標記 //$unifiedOrder->setParam("product_id","XXXX");//商品ID
        
        return $unifiedOrder->getResult(); } /** * 返回微信訂單狀態 */
    public function returnMessage($unifiedOrderResult,$field){ $arrMessage=array("resultCode"=>0,"resultType"=>"獲取錯誤","resultMsg"=>"該字段爲空"); if($unifiedOrderResult==null){ $arrMessage["resultType"]="未獲取權限"; $arrMessage["resultMsg"]="請從新打開頁面"; }elseif ($unifiedOrderResult["return_code"] == "FAIL") { $arrMessage["resultType"]="網絡錯誤"; $arrMessage["resultMsg"]=$unifiedOrderResult['return_msg']; } elseif($unifiedOrderResult["result_code"] == "FAIL") { $arrMessage["resultType"]="訂單錯誤"; $arrMessage["resultMsg"]=$unifiedOrderResult['err_code_des']; } elseif($unifiedOrderResult[$field] != NULL) { $arrMessage["resultCode"]=1; $arrMessage["resultType"]="生成訂單"; $arrMessage["resultMsg"]="OK"; $arrMessage["resultField"] = $unifiedOrderResult[$field]; } return $arrMessage; } /** * 微信回調接口返回 驗證簽名並回應微信 * @param [type] $xml [description] * @return [type] [description] */
    public function wxPayNotify($xml) { $notify = new Wxpay_server(); $notify->saveData($xml); //驗證簽名,並回復微信 //對後臺通知交互時,若是微信收到商戶的應答不是成功或者超時,微信認爲通知失敗 //微信會經過必定的策略(如30分鐘共8次),按期從新發起通知
        if ($notify->checkSign() == false) { $notify->setReturnParameter("return_code","FAIL");//返回狀態碼
            $notify->setReturnParameter("return_msg","簽名失敗");//返回信息
        } else { $notify->checkSign=TRUE; $notify->setReturnParameter("return_code","SUCCESS");//設置返回碼
 } return $notify; } } /** * JSAPI支付——H5網頁端調起支付接口 */
class JsApi_handle extends JsApi_common { public $code;//code碼,用以獲取openid
    public $openid;//用戶的openid
    public $parameters;//jsapi參數,格式爲json
    public $prepay_id;//使用統一支付接口獲得的預支付id
    public $curl_timeout;//curl超時時間

    function __construct() { //設置curl超時時間
        $this->curl_timeout = WxPayConf::CURL_TIMEOUT; } /** * 生成獲取code的URL * @return [type] [description] */
    public function createOauthUrlForCode() { //重定向URL
        $redirectUrl = "http://www.itcen.cn/wxpay/confirm/".$orderId."?showwxpaytitle=1"; $urlParams['appid'] = WxPayConf::APPID; $urlParams['redirect_uri'] = $redirectUrl; $urlParams['response_type'] = 'code'; $urlParams['scope'] = 'snsapi_base'; $urlParams['state'] = "STATE"."#wechat_redirect"; //拼接字符串
        $queryString = $this->ToUrlParams($urlParams, false); return "https://open.weixin.qq.com/connect/oauth2/authorize?".$queryString; } /** * 設置code * @param [type] $code [description] */
    public function setCode($code) { $this->code = $code; } /** * 做用:設置prepay_id */
    public function setPrepayId($prepayId) { $this->prepay_id = $prepayId; } /** * 做用:獲取jsapi的參數 */
    public function getParams() { $jsApiObj["appId"] = WxPayConf::APPID; $timeStamp = time(); $jsApiObj["timeStamp"] = "$timeStamp"; $jsApiObj["nonceStr"] = $this->createNoncestr(); $jsApiObj["package"] = "prepay_id=$this->prepay_id"; $jsApiObj["signType"] = "MD5"; $jsApiObj["paySign"] = $this->getSign($jsApiObj); $this->parameters = json_encode($jsApiObj); return $this->parameters; } /** * 經過curl 向微信提交code 用以獲取openid * @return [type] [description] */
    public function getOpenId() { //建立openid 的連接
        $url = $this->createOauthUrlForOpenid(); //初始化
        $ch = curl_init(); curl_setopt($ch, CURL_TIMEOUT, $this->curl_timeout); curl_setopt($ch, CURL_URL, $url); curl_setopt($ch, CURL_SSL_VERIFYPEER, FALSE); curl_setopt($ch, CURL_SSL_VERIFYHOST, FALSE); curl_setopt($ch, CURL_HEADER, FALSE); curl_setopt($ch, CURL_RETURNTRANSFER, TRUE); //執行curl
        $res = curl_exec($ch); curl_close($ch); //取出openid
        $data = json_decode($res); if (isset($data['openid'])) { $this->openid = $data['openid']; } else { return null; } return $this->openid; } /** * 生成能夠獲取openid 的URL * @return [type] [description] */
    public function createOauthUrlForOpenid() { $urlParams['appid'] = WxPayConf::APPID; $urlParams['secret'] = WxPayConf::APPSECRET; $urlParams['code'] = $this->code; $urlParams['grant_type'] = "authorization_code"; $queryString = $this->ToUrlParams($urlParams, false); return "https://api.weixin.qq.com/sns/oauth2/access_token?".$queryString; } } /** * 統一下單接口類 */
class UnifiedOrder_handle extends Wxpay_client_handle { public function __construct() { //設置接口連接
        $this->url = "https://api.mch.weixin.qq.com/pay/unifiedorder"; //設置curl超時時間
        $this->curl_timeout = WxPayConf::CURL_TIMEOUT; } } /** * 響應型接口基類 */
class Wxpay_server_handle extends JsApi_common{ public $data; //接收到的數據,類型爲關聯數組
    public $returnParams;   //返回參數,類型爲關聯數組

    /** * 將微信請求的xml轉換成關聯數組 * @param [type] $xml [description] * @return [type] [description] */
    public function saveData($xml) { $this->data = $this->xmlToArray($xml); } /** * 驗證簽名 * @return [type] [description] */
    public function checkSign() { $tmpData = $this->data; unset($temData['sign']); $sign = $this->getSign($tmpData); if ($this->data['sign'] == $sign) { return true; } return false; } /** * 設置返回微信的xml數據 */
    function setReturnParameter($parameter, $parameterValue) { $this->returnParameters[$this->trimString($parameter)] = $this->trimString($parameterValue); } /** * 將xml數據返回微信 */
    function returnXml() { $returnXml = $this->createXml(); return $returnXml; } } /** * 請求型接口的基類 */
class Wxpay_client_handle extends JsApi_common{ public $params; //請求參數,類型爲關聯數組
    public $response; //微信返回的響應
    public $result; //返回參數,類型類關聯數組
    public $url; //接口連接
    public $curl_timeout; //curl超時時間

    /** * 設置請求參數 * @param [type] $param [description] * @param [type] $paramValue [description] */
    public function setParam($param, $paramValue) { $this->params[$this->tirmString($param)] = $this->trimString($paramValue); } /** * 獲取結果,默認不使用證書 * @return [type] [description] */
    public function getResult() { $this->postxml(); $this->result = $this->xmlToArray($this->response); return $this->result; } /** * post請求xml * @return [type] [description] */
    public function postxml() { $xml = $this->createXml(); $this->response = $this->postXmlCurl($xml, $this->curl, $this->curl_timeout); return $this->response; } public function createXml() { $this->params['appid'] = WxPayConf::APPID; //公衆號ID
        $this->params['mch_id'] = WxPayConf::MCHID; //商戶號
        $this->params['nonce_str'] = $this->createNoncestr();   //隨機字符串
        $this->params['sign'] = $this->getSign($this->params);  //簽名
        
        return $this->arrayToXml($this->params); } } /** * 全部接口的基類 */
class JsApi_common { function __construct() { } public function trimString($value) { $ret = null; if (null != $value) { $ret = trim($value); if (strlen($ret) == 0) { $ret = null; } } return $ret; } /** * 產生隨機字符串,不長於32位 * @param integer $length [description] * @return [type] [description] */
    public function createNoncestr($length = 32) { $chars = "abcdefghijklmnopqrstuvwxyz0123456789"; $str = ''; for ($i = 0; $i < $length; $i++) { $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1); } return $str; } /** * 格式化參數 拼接字符串,簽名過程須要使用 * @param [type] $urlParams [description] * @param [type] $needUrlencode [description] */
    public function ToUrlParams($urlParams, $needUrlencode) { $buff = ""; ksort($urlParams); foreach ($urlParams as $k => $v) { if($needUrlencode) $v = urlencode($v); $buff .= $k .'='. $v .'&'; } $reqString = ''; if (strlen($buff) > 0) { $reqString = substr($buff, 0, strlen($buff) - 1); } return $reqString; } /** * 生成簽名 * @param [type] $params [description] * @return [type] [description] */
    public function getSign($obj) { foreach ($obj as $k => $v) { $params[$k] = $v; } //簽名步驟一:按字典序排序參數
        ksort($params); $str = $this->ToUrlParams($params, false); //簽名步驟二:在$str後加入key
        $str = $str."$key=".WxPayConf::KEY; //簽名步驟三:md5加密
        $str = md5($str); //簽名步驟四:全部字符轉爲大寫
        $result = strtoupper($str); return $result; } /** * array轉xml * @param [type] $arr [description] * @return [type] [description] */
    public function arrayToXml($arr) { $xml = "<xml>"; foreach ($arr as $k => $v) { if (is_numeric($val)) { $xml .= "<".$key.">".$key."</".$key.">"; } else { $xml .= "<".$key."><![CDATA[".$val."]]></".$key.">"; } } $xml .= "</xml>"; return $xml; } /** * 將xml轉爲array * @param [type] $xml [description] * @return [type] [description] */
    public function xmlToArray($xml) { $arr = json_decode(json_encode(simplexml_load_string($xml, 'SinpleXMLElement', LIBXML_NOCDATA)), true); return $arr; } /** * 以post方式提交xml到對應的接口 * @param [type] $xml [description] * @param [type] $url [description] * @param integer $second [description] * @return [type] [description] */
    public function postXmlCurl($xml, $url, $second = 30) { //初始化curl
        $ch = curl_init(); //設置超時
        curl_setopt($ch, CURL_TIMEOUT, $second); curl_setopt($ch, CURL_URL, $url); //這裏設置代理,若是有的話 //curl_setopt($ch,CURLOPT_PROXY, '8.8.8.8'); //curl_setopt($ch,CURLOPT_PROXYPORT, 8080);
        curl_setopt($ch, CURL_SSL_VERIFYHOST, FALSE); curl_setopt($ch, CURL_SSL_VERIFYPEER, FALSE); //設置header
        curl_setopt($ch, CURL_HEADER, FALSE); //要求結果爲字符串且輸出到屏幕上
        curl_setopt($ch, CURL_RETURNTRANSFER, TRUE); //以post方式提交
        curl_setopt($ch, CURL_POST, TRUE); curl_setopt($ch, CURL_POSTFIELDS, $xml); //執行curl
        $res = curl_exec($ch); if ($res) { curl_close($ch); return $res; } else { $error = curl_errno($ch); echo "curl出錯,錯誤碼:$error"."<br>"; echo "<a href='http://curl.haxx.se/libcurl/c/libcurl-errors.html'>錯誤緣由查詢</a></br>"; curl_close($ch); return false; } } } /** * 配置類 */
class WxPayConf { //微信公衆號身份的惟一標識。
    const APPID = 'wx654a22c6423213b7'; //受理商ID,身份標識
    const MCHID = '10043241'; const MCHNAME = 'KellyCen的博客'; //商戶支付密鑰Key。
    const KEY = '0000000000000000000000000000000'; //JSAPI接口中獲取openid
    const APPSECRET = '000000000000000000000000000'; //證書路徑,注意應該填寫絕對路徑
    const SSLCERT_PATH = '/home/WxPayCacert/apiclient_cert.pem'; const SSLKEY_PATH = '/home/WxPayCacert/apiclient_key.pem'; const SSLCA_PATH = '/home/WxPayCacert/rootca.pem'; //本例程經過curl使用HTTP POST方法,此處可修改其超時時間,默認爲30秒
    const CURL_TIMEOUT = 30; } 模型:Wxpay_model.php
模型:Wxpay_model.php
<!doctype html>  
<html>  
<head lang="zh-CN">  
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!-- Make sure that we can test against real IE8 -->
<meta http-equiv="X-UA-Compatible" content="IE=8" />
<title></title>
</head>
<body>

<a href="{$wxPayUrl}">微信支付</a>
</body>  
</html> 視圖:index.tpl
視圖:index.tpl
<!doctype html>  
<html>  
<head lang="zh-CN">  
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!-- Make sure that we can test against real IE8 -->
<meta http-equiv="X-UA-Compatible" content="IE=8" />
<title></title>
</head>
<body>

<a href="javascript:callpay();" id="btnOrder">點擊支付</a>
</body>  
<script type="text/javascript">
    //將數據付給js變量
    var wxJsApiData = {$wxJsApiData}; function onBridgeReady() { //格式參考官方文檔 https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=7_7&index=6
            WeixinJSBridge.invoke( 'getBrandWCPayRequest', $.parseJSON(wxJsApiData.resultData),
                function(res){ if(res.err_msg == "get_brand_wcpay_request:ok" ){ window.location.href="/wxpay/paysuccess/"+{$order.sn}; } } ); } function callpay() { if(!wxJsApiData.resultCode){ alert(wxJsApiData.resultType+","+wxJsApiData.resultMsg+"!"); return false; } if (typeof WeixinJSBridge == "undefined"){ if( document.addEventListener ){ document.addEventListener('WeixinJSBridgeReady', onBridgeReady, false); }else if (document.attachEvent){ document.attachEvent('WeixinJSBridgeReady', onBridgeReady); document.attachEvent('onWeixinJSBridgeReady', onBridgeReady); } }else{ onBridgeReady(); } } </script>
</html> 視圖:confirm.tpl
視圖:confirm.tpl

  裏面所用到的一些自定義函數能夠在我上一篇博文裏找找,那裏已經提供了代碼參考了。

  

轉自:https://www.cnblogs.com/it-cen/p/4950186.html

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