这次总结一下用户在微信内打开网页时,可以调用微信支付完成下单功能的模块开发,也就是在微信内的H5页面通过jsApi接口实现支付功能。当然了,微信官网上的微信支付开发文档也讲解的很详细,并且有实现代码可供参考,有的朋友直接看文档就可以自己实现此支付接口的开发了。
一、前言
为何我还写一篇微信支付接口的博文呢?第一,我们必须知道,所谓的工作经验很多都是靠总结出来的,你只有总结了更多知识,积累了更多经验,你才能在该行业中脱颖而出,我个人觉得如今的招聘,很多都需要工作经验(1年、3年、5年....),其实,工作时间的长久不能衡量一个人技术水平的高低,有的人一年的工作经验能拿3年工作经验的程序猿的工资,有的3年工作经验的却有可能比别人只有一年工作经验的还低,所以说,总结才能让自己的知识体系,经验深度更牛逼更稳固(虽然写一篇博文挺花费时间的);第二,写博文分享给大家还是挺有成就感的,首先是能让新手从我分享的博文中能学到东西,并且能快速将博文所讲解的技术运用到实际中来,所以我写的博文基本上能让新人快速读懂并且容易理解,另外,技术大神的话,看到博文有讲解的不对之处,还可以指出,并且可以交流,何乐而不为呢,我们需要的就是分享和交流。
扯远了,直接进入该主题的详解。
现在的微信支付方式有N种,看下图,有刷卡支付、公众号支付、扫码支付和APP支付,另外还有支付工具的开发,本博文选择的是公众号支付借口而开发进行讲解,其他几种支付接口开发基本上思路都是一样的,只要你能看懂我这博文所讲解的基本思路,你基本上也能独自开发其他几个支付接口。
二、思路详解
我们可以拿微信支付接口文档里的业务流程时序图看看,如下图,基本思路是这样子:首先在后台生成一个链接,展示给用户让用户点击(例如页面上有微信支付的按钮),用户点击按钮后,网站后台会根据订单的相关信息生成一个支付订单,此时会调用统一下单接口,对微信支付系统发起请求,而微信支付系统受到请求后,会根据请求过来的数据,生成一个 预支付交易会话标识(prepay_id,就是通过这个来识别该订单的),我们的网站收到微信支付系统的响应后,会得到prepay_id,然后通过自己构造微信支付所需要的参数,接着将支付所需参数返回给客户端,用户此时可能会有一个订单信息页,会有一个按钮,点击支付,此时会调用JSAPI接口对微信支付系统发起 请求支付,微信支付系统检查了请求的相关合法性之后,就会提示输入密码,用户此时输入密码确认,微信支付系统会对其进行验证,通过的话会返回支付结果,然后微信跳转会H5页面,这其中有一步是异步通知网站支付结果,我们网站需要对此进行处理(比如说异步支付结果通过后,需要更新数据表或者订单信息,例如标志用户已支付该订单了,同时也需要更新订单日志,防止用户重复提交订单)。
三、代码讲解
本次开发环境用的是php5.6 + MySQL + Redis + Linux + Apache,所选用的框架的CI框架(这些环境不一定需要和我的一致,框架也可以自己选择,反正自己稍微修改下代码就能移植过去了)。
微信支付接口的开发代码我已经提前写好了,在这里我对其进行分析讲解,方便大家能轻松理解,当然,假如你有一定的基础,直接看代码就能理清所有流程了,并且我的代码基本上都写上了注释(对于新手来说,这一点比微信文档所提供的代码好一点)。
1、构造一个链接展示给用户
这里我们提前需要知道一个点,那就是请求统一下单接口需要微信用户的openid(详情可看这https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_1),而获取openid需要先获取code(详情可看这微信登录接口),所以我们需要构造一个获取code的URL:
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');
}
}
在这先看看model里所写的几个类:model里有几个类:微信支付类、统一下单接口类、响应型接口基类、请求型接口基类、所有接口基类、配置类。为何要分那么多类而不在一个类里实现所有的方法的,因为,这样看起来代码逻辑清晰,哪个类该干嘛就干嘛。
这里我直接附上model的代码了,里面基本上每一个类每一个方法甚至每一行代码都会有解释的了,这里我就不对其展开一句句分析了:
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Wxpay_model extends CI_Model {
public function __construct() {
parent::__construct();
}
/**
* 返回可以获得微信code的URL (用以获取openid)
* @return [type] [description]
*/
public function retWxPayUrl() {
$jsApi = new JsApi_handle();
return $jsApi->createOauthUrlForCode();
}
/**
* 微信jsapi点击支付
* @param [type] $data [description]
* @return [type] [description]
*/
public function wxPayJsApi($data) {
$jsApi = new JsApi_handle();
//统一下单接口所需数据
$payData = $this->returnData($data);
//获取code码,用以获取openid
$code = $_GET['code'];
$jsApi->setCode($code);
//通过code获取openid
$openid = $jsApi->getOpenId();
$unifiedOrderResult = null;
if ($openid != null) {
//取得统一下单接口返回的数据
$unifiedOrderResult = $this->getResult($payData, 'JSAPI', $openid);
//获取订单接口状态
$returnMessage = $this->returnMessage($unifiedOrder, 'prepay_id');
if ($returnMessage['resultCode']) {
$jsApi->setPrepayId($retuenMessage['resultField']);
//取得wxjsapi接口所需要的数据
$returnMessage['resultData'] = $jsApi->getParams();
}
return $returnMessage;
}
}
/**
* 统一下单接口所需要的数据
* @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;
}
/**
* 返回统一下单接口结果 (参考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']); //商户订单号
$unifiedOrder->setParam('total_fee', $payData['total_fee']); //总金额
$unifiedOrder->setParam('attach', $payData['attach']); //附加数据
$unifiedOrder->setParam('notify_url', base_url('/Wxpay/pay_callback'));//通知地址
$unifiedOrder->setParam('trade_type', $trade_type); //交易类型
//非必填参数,商户可根据实际情况选填
//$unifiedOrder->setParam("sub_mch_id","XXXX");//子商户号
//$unifiedOrder->setParam("device_info","XXXX");//设备号
//$unifiedOrder->setParam("time_start","XXXX");//交易起始时间
//$unifiedOrder->setParam("time_expire","XXXX");//交易结束时间
//$unifiedOrder->setParam("goods_tag","XXXX");//商品标记
//$unifiedOrder->setParam("product_id","XXXX");//商品ID
return $unifiedOrder->getResult();
}
/**
* 返回微信订单状态
*/
public function returnMessage($unifiedOrderResult,$field){
$arrMessage=array("resultCode"=>0,"resultType"=>"获取错误","resultMsg"=>"该字段为空");
if($unifiedOrderResult==null){
$arrMessage["resultType"]="未获取权限";
$arrMessage["resultMsg"]="请重新打开页面";
}elseif ($unifiedOrderResult["return_code"] == "FAIL")
{
$arrMessage["resultType"]="网络错误";
$arrMessage["resultMsg"]=$unifiedOrderResult['return_msg'];
}
elseif($unifiedOrderResult["result_code"] == "FAIL")
{
$arrMessage["resultType"]="订单错误";
$arrMessage["resultMsg"]=$unifiedOrderResult['err_code_des'];
}
elseif($unifiedOrderResult[$field] != NULL)
{
$arrMessage["resultCode"]=1;
$arrMessage["resultType"]="生成订单";
$arrMessage["resultMsg"]="OK";
$arrMessage["resultField"] = $unifiedOrderResult[$field];
}
return $arrMessage;
}
/**
* 微信回调接口返回 验证签名并回应微信
* @param [type] $xml [description]
* @return [type] [description]
*/
public function wxPayNotify($xml) {
$notify = new Wxpay_server();
$notify->saveData($xml);
//验证签名,并回复微信
//对后台通知交互时,如果微信收到商户的应答不是成功或者超时,微信认为通知失败
//微信会通过一定的策略(如30分钟共8次),定期重新发起通知
if ($notify->checkSign() == false) {
$notify->setReturnParameter("return_code","FAIL");//返回状态码
$notify->setReturnParameter("return_msg","签名失败");//返回信息
} else {
$notify->checkSign=TRUE;
$notify->setReturnParameter("return_code","SUCCESS");//设置返回码
}
return $notify;
}
}
/**
* JSAPI支付——H5网页端调起支付接口
*/
class JsApi_handle extends JsApi_common {
public $code;//code码,用以获取openid
public $openid;//用户的openid
public $parameters;//jsapi参数,格式为json
public $prepay_id;//使用统一支付接口得到的预支付id
public $curl_timeout;//curl超时时间
function __construct()
{
//设置curl超时时间
$this->curl_timeout = WxPayConf::CURL_TIMEOUT;
}
/**
* 生成获取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;
}
/**
* 设置code
* @param [type] $code [description]
*/
public function setCode($code) {
$this->code = $code;
}
/**
* 作用:设置prepay_id
*/
public function setPrepayId($prepayId)
{
$this->prepay_id = $prepayId;
}
/**
* 作用:获取jsapi的参数
*/
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;
}
/**
* 通过curl 向微信提交code 用以获取openid
* @return [type] [description]
*/
public function getOpenId() {
//创建openid 的链接
$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);
//执行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;
}
/**
* 生成可以获取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;
}
}
/**
* 统一下单接口类
*/
class UnifiedOrder_handle extends Wxpay_client_handle {
public function __construct() {
//设置接口链接
$this->url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
//设置curl超时时间
$this->curl_timeout = WxPayConf::CURL_TIMEOUT;
}
}
/**
* 响应型接口基类
*/
class Wxpay_server_handle extends JsApi_common{
public $data; //接收到的数据,类型为关联数组
public $returnParams; //返回参数,类型为关联数组
/**
* 将微信请求的xml转换成关联数组
* @param [type] $xml [description]
* @return [type] [description]
*/
public function saveData($xml) {
$this->data = $this->xmlToArray($xml);
}
/**
* 验证签名
* @return [type] [description]
*/
public function checkSign() {
$tmpData = $this->data;
unset($temData['sign']);
$sign = $this->getSign($tmpData);
if ($this->data['sign'] == $sign) {
return true;
}
return false;
}
/**
* 设置返回微信的xml数据
*/
function setReturnParameter($parameter, $parameterValue)
{
$this->returnParameters[$this->trimString($parameter)] = $this->trimString($parameterValue);
}
/**
* 将xml数据返回微信
*/
function returnXml()
{
$returnXml = $this->createXml();
return $returnXml;
}
}
/**
* 请求型接口的基类
*/
class Wxpay_client_handle extends JsApi_common{
public $params; //请求参数,类型为关联数组
public $response; //微信返回的响应
public $result; //返回参数,类型类关联数组
public $url; //接口链接
public $curl_timeout; //curl超时时间
/**
* 设置请求参数
* @param [type] $param [description]
* @param [type] $paramValue [description]
*/
public function setParam($param, $paramValue) {
$this->params[$this->tirmString($param)] = $this->trimString($paramValue);
}
/**
* 获取结果,默认不使用证书
* @return [type] [description]
*/
public function getResult() {
$this->postxml();
$this->result = $this->xmlToArray($this->response);
return $this->result;
}
/**
* post请求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; //公众号ID
$this->params['mch_id'] = WxPayConf::MCHID; //商户号
$this->params['nonce_str'] = $this->createNoncestr(); //随机字符串
$this->params['sign'] = $this->getSign($this->params); //签名
return $this->arrayToXml($this->params);
}
}
/**
* 所有接口的基类
*/
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;
}
/**
* 产生随机字符串,不长于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;
}
/**
* 格式化参数 拼接字符串,签名过程需要使用
* @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;
}
/**
* 生成签名
* @param [type] $params [description]
* @return [type] [description]
*/
public function getSign($obj) {
foreach ($obj as $k => $v) {
$params[$k] = $v;
}
//签名步骤一:按字典序排序参数
ksort($params);
$str = $this->ToUrlParams($params, false);
//签名步骤二:在$str后加入key
$str = $str."$key=".WxPayConf::KEY;
//签名步骤三:md5加密
$str = md5($str);
//签名步骤四:所有字符转为大写
$result = strtoupper($str);
return $result;
}
/**
* array转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;
}
/**
* 将xml转为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到对应的接口
* @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
$ch = curl_init();
//设置超时
curl_setopt($ch, CURL_TIMEOUT, $second);
curl_setopt($ch, CURL_URL, $url);
//这里设置代理,如果有的话
//curl_setopt($ch,CURLOPT_PROXY, '8.8.8.8');
//curl_setopt($ch,CURLOPT_PROXYPORT, 8080);
curl_setopt($ch, CURL_SSL_VERIFYHOST, FALSE);
curl_setopt($ch, CURL_SSL_VERIFYPEER, FALSE);
//设置header
curl_setopt($ch, CURL_HEADER, FALSE);
//要求结果为字符串且输出到屏幕上
curl_setopt($ch, CURL_RETURNTRANSFER, TRUE);
//以post方式提交
curl_setopt($ch, CURL_POST, TRUE);
curl_setopt($ch, CURL_POSTFIELDS, $xml);
//执行curl
$res = curl_exec($ch);
if ($res) {
curl_close($ch);
return $res;
} 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;
}
}
}
/**
* 配置类
*/
class WxPayConf {
//微信公众号身份的唯一标识。
const APPID = 'wx654a22c6423213b7';
//受理商ID,身份标识
const MCHID = '10043241';
const MCHNAME = 'KellyCen的博客';
//商户支付密钥Key。
const KEY = '0000000000000000000000000000000';
//JSAPI接口中获取openid
const APPSECRET = '000000000000000000000000000';
//证书路径,注意应该填写绝对路径
const SSLCERT_PATH = '/home/WxPayCacert/apiclient_cert.pem';
const SSLKEY_PATH = '/home/WxPayCacert/apiclient_key.pem';
const SSLCA_PATH = '/home/WxPayCacert/rootca.pem';
//本例程通过curl使用HTTP POST方法,此处可修改其超时时间,默认为30秒
const CURL_TIMEOUT = 30;
}
Wxpay_model.php
Wxpay_model.php
获取到code的URL后,将其分配到页面去,让用户去点击,用户进行点击后,就会从微信服务器获取到code,然后回调到redirect_uri所指的地址去。
2、获取到code后,会回调到redirect_uri所指向的地址去,这里是到了/Wxpay/confirm/,看看这个confirm方法是打算干嘛的:
/**
* 手机端微信支付,此处是授权获取到code时的回调地址
* @param [type] $orderId 订单编号id
* @return [type] [description]
*/
public function confirm($orderId) {
//先确认用户是否登录
$this->ensureLogin();
//通过订单编号获取订单数据
$order = $this->wxpay_model->get($orderId);
//验证订单是否是当前用户
$this->_verifyUser($order);
//取得支付所需要的订单数据
$orderData = $this->returnOrderData[$orderId];
//取得jsApi所需要的数据
$wxJsApiData = $this->wxpay_model->wxPayJsApi($orderData);
//将数据分配到模板去,在js里使用
$this->smartyData['wxJsApiData'] = json_encode($wxJsApiData, JSON_UNESCAPED_UNICODE);
$this->smartyData['order'] = $orderData;
$this->displayView('wxpay/confirm.tpl');
}
这一步开始去取JSAPI支付接口所需要的数据了,这一步算是最主要的一步,这里还会调用统一下单接口获取到prepay_id,我们跳到
$this->wxpay_model->wxPayJsApi($orderData) 看看:
/**
* 微信jsapi点击支付
* @param [type] $data [description]
* @return [type] [description]
*/
public function wxPayJsApi($data) {
$jsApi = new JsApi_handle();
//统一下单接口所需数据
$payData = $this->returnData($data);
//获取code码,用以获取openid
$code = $_GET['code'];
$jsApi->setCode($code);
//通过code获取openid
$openid = $jsApi->getOpenId();
$unifiedOrderResult = null;
if ($openid != null) {
//取得统一下单接口返回的数据
$unifiedOrderResult = $this->getResult($payData, 'JSAPI', $openid);
//获取订单接口状态
$returnMessage = $this->returnMessage($unifiedOrder, 'prepay_id');
if ($returnMessage['resultCode']) {
$jsApi->setPrepayId($retuenMessage['resultField']);
//取得wxjsapi接口所需要的数据
$returnMessage['resultData'] = $jsApi->getParams();
}
return $returnMessage;
}
}
这里首先是取得下单接口所需要的数据;
接着获取到code码,通过code码获取到openid;
然后调用统一下单接口,取得下单接口的响应数据,即prepay_id;
最后取得微信支付JSAPI所需要的数据。
这就是上面这个方法所要做的事情,取到数据后,会将数据分配到模板里,然后根据官方文档所给的参考格式将其放在js里,如下面的代码:
<!doctype html>
<html>
<head lang="zh-CN">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!-- Make sure that we can test against real IE8 -->
<meta http-equiv="X-UA-Compatible" content="IE=8" />
<title></title>
</head>
<body>
<a href="javascript:callpay();" id="btnOrder">点击支付</a>
</body>
<script type="text/javascript">
//将数据付给js变量
var wxJsApiData = {$wxJsApiData};
function onBridgeReady()
{
//格式参考官方文档 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>
3、此时用户只需要点击支付,就可以开始进入支付界面了,接着就是输入密码,确认,最后会提示支付成功,紧接着网站会提供一个支付成功跳转页面。类似微信文档里所提供的图片这样,这里我就直接截取文档里的案例图了:
4、这里还有一步,就是微信支付系统会异步通知网站后台用户的支付结果。在获取统一下单数据时,我们指定了一个通知地址,在model里可以找到
支付成功后,微信支付系统会将支付结果异步发送到此地址上/Wxpay/pay_callback/ ,我们来看一下这个方法
/**
* 支付回调接口
* @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;
$payInfo['msg'] = '通信出错';
} elseif ($notify->data['result_code'] == 'FAIL') {
$payInfo['status'] = FALSE;
$payInfo['msg'] = '业务出错';
} 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']){
//这里要记录到日志处理(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{
//这里要记录到日志处理(略)
$this->model->order->onPayFailure($payInfo['sn'], $payInfo['order_no'], $payInfo['platform_no'],'', $payInfo['user_sign'], $payInfo, '订单支付失败 ['.$payInfo['msg'].']');
}
}
这方法就是对支付是否成功,对网站的支付相关逻辑进行后续处理,例如假如支付失败,就需要记录日志里说明此次交易失败,或者是做某一些逻辑处理,而支付成功又该如何做处理,等等。
这里我们就分析下这个方法 $this->wxpay_model->wxPayNotify($postData); 对异步返回的数据进行安全性校验,例如验证签名,看看model里的这个方法:
/**
* 微信回调接口返回 验证签名并回应微信
* @param [type] $xml [description]
* @return [type] [description]
*/
public function wxPayNotify($xml) {
$notify = new Wxpay_server();
$notify->saveData($xml);
//验证签名,并回复微信
//对后台通知交互时,如果微信收到商户的应答不是成功或者超时,微信认为通知失败
//微信会通过一定的策略(如30分钟共8次),定期重新发起通知
if ($notify->checkSign() == false) {
$notify->setReturnParameter("return_code","FAIL");//返回状态码
$notify->setReturnParameter("return_msg","签名失败");//返回信息
} else {
$notify->checkSign=TRUE;
$notify->setReturnParameter("return_code","SUCCESS");//设置返回码
}
return $notify;
}
如果验证通过,则就开始进行交易成功或者失败时所要做的逻辑处理了,这逻辑处理的代码我就不写了,因为每一个网站的处理方式都不一样,我这里是这样处理的,我把思路写下,方便不懂的朋友可以按着我的思路去完善后续的处理:首先是查看数据库里的订单日志表,看这笔交易之前是否已经交易过了,交易过就不用再更新数据表了,如果没交易过,就会将之前存在redis的订单数据给取出来,再将这些数据插入到订单日志表里,差不多就这样处理。
好了,基于H5的微信支付接口开发详解就讲到这里,如果你认真理清博文里所讲解的思路,自己基本上也可以尝试开发此接口了,同时只要会了这个,你也基本上可以开发二维码支付,刷卡支付等等的支付接口。
这里我附上此次开发中的完整代码供大家阅读:
<?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');
}
/**
* 手机端微信支付,此处是授权获取到code时的回调地址
* @param [type] $orderId 订单编号id
* @return [type] [description]
*/
public function confirm($orderId) {
//先确认用户是否登录
$this->ensureLogin();
//通过订单编号获取订单数据
$order = $this->wxpay_model->get($orderId);
//验证订单是否是当前用户
$this->_verifyUser($order);
//取得支付所需要的订单数据
$orderData = $this->returnOrderData[$orderId];
//取得jsApi所需要的数据
$wxJsApiData = $this->wxpay_model->wxPayJsApi($orderData);
//将数据分配到模板去,在js里使用
$this->smartyData['wxJsApiData'] = json_encode($wxJsApiData, JSON_UNESCAPED_UNICODE);
$this->smartyData['order'] = $orderData;
$this->displayView('wxpay/confirm.tpl');
}
/**
* 支付回调接口
* @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;
$payInfo['msg'] = '通信出错';
} elseif ($notify->data['result_code'] == 'FAIL') {
$payInfo['status'] = FALSE;
$payInfo['msg'] = '业务出错';
} 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']){
//这里要记录到日志处理(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{
//这里要记录到日志处理(略)
$this->model->order->onPayFailure($payInfo['sn'], $payInfo['order_no'], $payInfo['platform_no'],'', $payInfo['user_sign'], $payInfo, '订单支付失败 ['.$payInfo['msg'].']');
}
}
/**
* 返回支付所需要的数据
* @param [type] $orderId 订单号
* @param string $data 订单数据,当$data数据存在时刷新$orderData缓存,因为订单号不唯一
* @return [type] [description]
*/
public function returnOrderData($orderId, $data = '') {
//获取订单数据
$order = $this->wxpay_model->get($orderId);
if (0 === count($order)) return false;
if (empty($data)) {
$this->load->library('RedisCache');
//取得缓存在redis的订单数据
$orderData = $this->rediscache->getJson("order:orderData:".$orderId);
if (empty($orderData)) {
//如果redis里没有,则直接读数据库取
$this->load->model('order_model');
$order = $this->order_model->get($orderId);
if (0 === count($order)) {
return false;
}
$data = $order;
} else {
//如果redis里面有的话,直接返回数据
return $orderData;
}
}
//支付前缓存所需要的数据
$orderData['id'] = $data['id'];
$orderData['fee'] = $data['fee'];
//支付平台需要的数据
$orderData['user_id'] = $data['user_id'];
$orderData['sn'] = $data['cn'];
//这是唯一编号
$orderData['order_no'] = substr(md5($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'];
//将数据缓存到redis里面
$this->rediscache->set("order:orderData:".$orderId, $orderData, 3600*24);
//做个标识缓存到redis,用以判断该订单是否已经支付了
$this->rediscache->set("order:payNo:".$orderData['order_no'], "NO", 3600*24);
return $orderData;
}
private function _verifyUser($order) {
if (empty($order)) show_404();
if (0 === count($order)) show_404();
//判断订单表里的用户id是否是当前登录者的id
if ($order['user_id'] == $this->uid) return;
show_error('只能查看自己的订单');
}
}
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();
}
/**
* 返回可以获得微信code的URL (用以获取openid)
* @return [type] [description]
*/
public function retWxPayUrl() {
$jsApi = new JsApi_handle();
return $jsApi->createOauthUrlForCode();
}
/**
* 微信jsapi点击支付
* @param [type] $data [description]
* @return [type] [description]
*/
public function wxPayJsApi($data) {
$jsApi = new JsApi_handle();
//统一下单接口所需数据
$payData = $this->returnData($data);
//获取code码,用以获取openid
$code = $_GET['code'];
$jsApi->setCode($code);
//通过code获取openid
$openid = $jsApi->getOpenId();
$unifiedOrderResult = null;
if ($openid != null) {
//取得统一下单接口返回的数据
$unifiedOrderResult = $this->getResult($payData, 'JSAPI', $openid);
//获取订单接口状态
$returnMessage = $this->returnMessage($unifiedOrder, 'prepay_id');
if ($returnMessage['resultCode']) {
$jsApi->setPrepayId($retuenMessage['resultField']);
//取得wxjsapi接口所需要的数据
$returnMessage['resultData'] = $jsApi->getParams();
}
return $returnMessage;
}
}
/**
* 统一下单接口所需要的数据
* @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;
}
/**
* 返回统一下单接口结果 (参考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']); //商户订单号
$unifiedOrder->setParam('total_fee', $payData['total_fee']); //总金额
$unifiedOrder->setParam('attach', $payData['attach']); //附加数据
$unifiedOrder->setParam('notify_url', base_url('/Wxpay/pay_callback'));//通知地址
$unifiedOrder->setParam('trade_type', $trade_type); //交易类型
//非必填参数,商户可根据实际情况选填
//$unifiedOrder->setParam("sub_mch_id","XXXX");//子商户号
//$unifiedOrder->setParam("device_info","XXXX");//设备号
//$unifiedOrder->setParam("time_start","XXXX");//交易起始时间
//$unifiedOrder->setParam("time_expire","XXXX");//交易结束时间
//$unifiedOrder->setParam("goods_tag","XXXX");//商品标记
//$unifiedOrder->setParam("product_id","XXXX");//商品ID
return $unifiedOrder->getResult();
}
/**
* 返回微信订单状态
*/
public function returnMessage($unifiedOrderResult,$field){
$arrMessage=array("resultCode"=>0,"resultType"=>"获取错误","resultMsg"=>"该字段为空");
if($unifiedOrderResult==null){
$arrMessage["resultType"]="未获取权限";
$arrMessage["resultMsg"]="请重新打开页面";
}elseif ($unifiedOrderResult["return_code"] == "FAIL")
{
$arrMessage["resultType"]="网络错误";
$arrMessage["resultMsg"]=$unifiedOrderResult['return_msg'];
}
elseif($unifiedOrderResult["result_code"] == "FAIL")
{
$arrMessage["resultType"]="订单错误";
$arrMessage["resultMsg"]=$unifiedOrderResult['err_code_des'];
}
elseif($unifiedOrderResult[$field] != NULL)
{
$arrMessage["resultCode"]=1;
$arrMessage["resultType"]="生成订单";
$arrMessage["resultMsg"]="OK";
$arrMessage["resultField"] = $unifiedOrderResult[$field];
}
return $arrMessage;
}
/**
* 微信回调接口返回 验证签名并回应微信
* @param [type] $xml [description]
* @return [type] [description]
*/
public function wxPayNotify($xml) {
$notify = new Wxpay_server();
$notify->saveData($xml);
//验证签名,并回复微信
//对后台通知交互时,如果微信收到商户的应答不是成功或者超时,微信认为通知失败
//微信会通过一定的策略(如30分钟共8次),定期重新发起通知
if ($notify->checkSign() == false) {
$notify->setReturnParameter("return_code","FAIL");//返回状态码
$notify->setReturnParameter("return_msg","签名失败");//返回信息
} else {
$notify->checkSign=TRUE;
$notify->setReturnParameter("return_code","SUCCESS");//设置返回码
}
return $notify;
}
}
/**
* JSAPI支付——H5网页端调起支付接口
*/
class JsApi_handle extends JsApi_common {
public $code;//code码,用以获取openid
public $openid;//用户的openid
public $parameters;//jsapi参数,格式为json
public $prepay_id;//使用统一支付接口得到的预支付id
public $curl_timeout;//curl超时时间
function __construct()
{
//设置curl超时时间
$this->curl_timeout = WxPayConf::CURL_TIMEOUT;
}
/**
* 生成获取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;
}
/**
* 设置code
* @param [type] $code [description]
*/
public function setCode($code) {
$this->code = $code;
}
/**
* 作用:设置prepay_id
*/
public function setPrepayId($prepayId)
{
$this->prepay_id = $prepayId;
}
/**
* 作用:获取jsapi的参数
*/
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;
}
/**
* 通过curl 向微信提交code 用以获取openid
* @return [type] [description]
*/
public function getOpenId() {
//创建openid 的链接
$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);
//执行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;
}
/**
* 生成可以获取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;
}
}
/**
* 统一下单接口类
*/
class UnifiedOrder_handle extends Wxpay_client_handle {
public function __construct() {
//设置接口链接
$this->url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
//设置curl超时时间
$this->curl_timeout = WxPayConf::CURL_TIMEOUT;
}
}
/**
* 响应型接口基类
*/
class Wxpay_server_handle extends JsApi_common{
public $data; //接收到的数据,类型为关联数组
public $returnParams; //返回参数,类型为关联数组
/**
* 将微信请求的xml转换成关联数组
* @param [type] $xml [description]
* @return [type] [description]
*/
public function saveData($xml) {
$this->data = $this->xmlToArray($xml);
}
/**
* 验证签名
* @return [type] [description]
*/
public function checkSign() {
$tmpData = $this->data;
unset($temData['sign']);
$sign = $this->getSign($tmpData);
if ($this->data['sign'] == $sign) {
return true;
}
return false;
}
/**
* 设置返回微信的xml数据
*/
function setReturnParameter($parameter, $parameterValue)
{
$this->returnParameters[$this->trimString($parameter)] = $this->trimString($parameterValue);
}
/**
* 将xml数据返回微信
*/
function returnXml()
{
$returnXml = $this->createXml();
return $returnXml;
}
}
/**
* 请求型接口的基类
*/
class Wxpay_client_handle extends JsApi_common{
public $params; //请求参数,类型为关联数组
public $response; //微信返回的响应
public $result; //返回参数,类型类关联数组
public $url; //接口链接
public $curl_timeout; //curl超时时间
/**
* 设置请求参数
* @param [type] $param [description]
* @param [type] $paramValue [description]
*/
public function setParam($param, $paramValue) {
$this->params[$this->tirmString($param)] = $this->trimString($paramValue);
}
/**
* 获取结果,默认不使用证书
* @return [type] [description]
*/
public function getResult() {
$this->postxml();
$this->result = $this->xmlToArray($this->response);
return $this->result;
}
/**
* post请求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; //公众号ID
$this->params['mch_id'] = WxPayConf::MCHID; //商户号
$this->params['nonce_str'] = $this->createNoncestr(); //随机字符串
$this->params['sign'] = $this->getSign($this->params); //签名
return $this->arrayToXml($this->params);
}
}
/**
* 所有接口的基类
*/
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;
}
/**
* 产生随机字符串,不长于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;
}
/**
* 格式化参数 拼接字符串,签名过程需要使用
* @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;
}
/**
* 生成签名
* @param [type] $params [description]
* @return [type] [description]
*/
public function getSign($obj) {
foreach ($obj as $k => $v) {
$params[$k] = $v;
}
//签名步骤一:按字典序排序参数
ksort($params);
$str = $this->ToUrlParams($params, false);
//签名步骤二:在$str后加入key
$str = $str."$key=".WxPayConf::KEY;
//签名步骤三:md5加密
$str = md5($str);
//签名步骤四:所有字符转为大写
$result = strtoupper($str);
return $result;
}
/**
* array转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;
}
/**
* 将xml转为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到对应的接口
* @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
$ch = curl_init();
//设置超时
curl_setopt($ch, CURL_TIMEOUT, $second);
curl_setopt($ch, CURL_URL, $url);
//这里设置代理,如果有的话
//curl_setopt($ch,CURLOPT_PROXY, '8.8.8.8');
//curl_setopt($ch,CURLOPT_PROXYPORT, 8080);
curl_setopt($ch, CURL_SSL_VERIFYHOST, FALSE);
curl_setopt($ch, CURL_SSL_VERIFYPEER, FALSE);
//设置header
curl_setopt($ch, CURL_HEADER, FALSE);
//要求结果为字符串且输出到屏幕上
curl_setopt($ch, CURL_RETURNTRANSFER, TRUE);
//以post方式提交
curl_setopt($ch, CURL_POST, TRUE);
curl_setopt($ch, CURL_POSTFIELDS, $xml);
//执行curl
$res = curl_exec($ch);
if ($res) {
curl_close($ch);
return $res;
} 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;
}
}
}
/**
* 配置类
*/
class WxPayConf {
//微信公众号身份的唯一标识。
const APPID = 'wx654a22c6423213b7';
//受理商ID,身份标识
const MCHID = '10043241';
const MCHNAME = 'KellyCen的博客';
//商户支付密钥Key。
const KEY = '0000000000000000000000000000000';
//JSAPI接口中获取openid
const APPSECRET = '000000000000000000000000000';
//证书路径,注意应该填写绝对路径
const SSLCERT_PATH = '/home/WxPayCacert/apiclient_cert.pem';
const SSLKEY_PATH = '/home/WxPayCacert/apiclient_key.pem';
const SSLCA_PATH = '/home/WxPayCacert/rootca.pem';
//本例程通过curl使用HTTP POST方法,此处可修改其超时时间,默认为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="{$wxPayUrl}">微信支付</a>
</body>
</html>
视图:index.tpl
视图:index.tpl
<!doctype html>
<html>
<head lang="zh-CN">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!-- Make sure that we can test against real IE8 -->
<meta http-equiv="X-UA-Compatible" content="IE=8" />
<title></title>
</head>
<body>
<a href="javascript:callpay();" id="btnOrder">点击支付</a>
</body>
<script type="text/javascript">
//将数据付给js变量
var wxJsApiData = {$wxJsApiData};
function onBridgeReady()
{
//格式参考官方文档 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>
视图:confirm.tpl
视图:confirm.tpl
里面所用到的一些自定义函数可以在我上一篇博文里找找,那里已经提供了代码参考了。