摘要：如果读者对微信开发没有一个主观上的认识，那么建议读者先研读微信公众平台开发者文档，然后再阅读本文，效果更佳另外本文的分章节版本可以在八宝粥的博客找到。在中新建微信公众号后台配置在微信公众号后台配置和，然后提交验证即可。
本文内容较多，包括微信接入、获取微信用户信息、微信支付、JSSDK配置参数获取等部分。如果读者对微信开发没有一个主观上的认识，那么建议读者先研读微信公众平台开发者文档，然后再阅读本文，效果更佳！另外本文的分章节版本可以在八宝粥的博客找到。
接入微信 Yii2后台配置20160712-Update：微信开发的完整例子已经整理在Github，欢迎查看： yii2-wechat-demo。
1.在app/config/params.php中配置token参数
return [
//微信接入
"wechat" =>[
"token" => "your token",
],
];
2.在app/config/main.php中配置路由
因为接口模块使用的RESTful API，所以需要定义路由规则。
"urlManager" => [
"enablePrettyUrl" => true,
"enableStrictParsing" => true,
"showScriptName" => false,
"rules" => [
[
"class" => "yii
estUrlRule",
"controller" => "wechat",
"extraPatterns" => [
"GET valid" => "valid",
],
],
],
],
3.在app/controllers中新建WechatController
checkSignature($signature,$timestamp,$nonce)){
echo $echoStr;
}
}
private function checkSignature($signature,$timestamp,$nonce)
{
// you must define TOKEN by yourself
$token = Yii::$app->params["wechat"]["token"];
if (!$token) {
echo "TOKEN is not defined!";
} else {
$tmpArr = array($token, $timestamp, $nonce);
// use SORT_STRING rule
sort($tmpArr, SORT_STRING);
$tmpStr = implode( $tmpArr );
$tmpStr = sha1( $tmpStr );
if( $tmpStr == $signature ){
return true;
}else{
return false;
}
}
}
}
微信公众号后台配置
在微信公众号后台配置URL和Token，然后提交验证即可。
URL:http://app.demo.com/wechats/valid Token:your token获取用户信息 用户表设计
CREATE TABLE `wechat_user` ( `id` int(11) NOT NULL, `openid` varchar(255) COLLATE utf8_unicode_ci NOT NULL, `nickname` varchar(50) COLLATE utf8_unicode_ci NOT NULL COMMENT "微信昵称", `sex` tinyint(4) NOT NULL COMMENT "性别", `headimgurl` varchar(255) COLLATE utf8_unicode_ci NOT NULL COMMENT "头像", `country` varchar(50) COLLATE utf8_unicode_ci NOT NULL COMMENT "国家", `province` varchar(50) COLLATE utf8_unicode_ci NOT NULL COMMENT "省份", `city` varchar(50) COLLATE utf8_unicode_ci NOT NULL COMMENT "城市", `access_token` varchar(255) COLLATE utf8_unicode_ci NOT NULL, `refresh_token` varchar(255) COLLATE utf8_unicode_ci NOT NULL, `created_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP ) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci; ALTER TABLE `wechat_user` ADD PRIMARY KEY (`id`);获取用户信息的相关接口
1.用户授权接口：获取access_token、openid等；获取并保存用户资料到数据库
public function actionAccesstoken()
{
$code = $_GET["code"];
$state = $_GET["state"];
$appid = Yii::$app->params["wechat"]["appid"];
$appsecret = Yii::$app->params["wechat"]["appsecret"];
$request_url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=".$appid."&secret=".$appsecret."&code=".$code."&grant_type=authorization_code";
//初始化一个curl会话
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $request_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$result = curl_exec($ch);
curl_close($ch);
$result = $this->response($result);
//获取token和openid成功，数据解析
$access_token = $result["access_token"];
$refresh_token = $result["refresh_token"];
$openid = $result["openid"];
//请求微信接口，获取用户信息
$userInfo = $this->getUserInfo($access_token,$openid);
$user_check = WechatUser::find()->where(["openid"=>$openid])->one();
if ($user_check) {
//更新用户资料
} else {
//保存用户资料
}
//前端网页的重定向
if ($openid) {
return $this->redirect($state.$openid);
} else {
return $this->redirect($state);
}
}
2.从微信获取用户资料
public function getUserInfo($access_token,$openid)
{
$request_url = "https://api.weixin.qq.com/sns/userinfo?access_token=".$access_token."&openid=".$openid."&lang=zh_CN";
//初始化一个curl会话
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $request_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$result = curl_exec($ch);
curl_close($ch);
$result = $this->response($result);
return $result;
}
3.获取用户资料接口
public function actionUserinfo()
{
if(isset($_REQUEST["openid"])){
$openid = $_REQUEST["openid"];
$user = WechatUser::find()->where(["openid"=>$openid])->one();
if ($user) {
$result["error"] = 0;
$result["msg"] = "获取成功";
$result["user"] = $user;
} else {
$result["error"] = 1;
$result["msg"] = "没有该用户";
}
} else {
$result["error"] = 1;
$result["msg"] = "openid为空";
}
return $result;
}
微信支付
1.微信支付接口：打包支付数据
public function actionPay(){
if(isset($_REQUEST["uid"])&&isset($_REQUEST["oid"])&&isset($_REQUEST["totalFee"])){
//uid、oid、totalFee
$uid = $_REQUEST["uid"];
$oid = $_REQUEST["oid"];
$totalFee = $_REQUEST["totalFee"];
$timestamp = time();
//微信支付参数
$appid = Yii::$app->params["wechat"]["appid"];
$mchid = Yii::$app->params["wechat"]["mchid"];
$key = Yii::$app->params["wechat"]["key"];
$notifyUrl = Yii::$app->params["wechat"]["notifyUrl"];
//支付打包
$wx_pay = new WechatPay($mchid, $appid, $key);
$package = $wx_pay->createJsBizPackage($uid, $totalFee, $oid, $notifyUrl, $timestamp);
$result["error"] = 0;
$result["msg"] = "支付打包成功";
$result["package"] = $package;
return $result;
}else{
$result["error"] = 1;
$result["msg"] = "请求参数错误";
}
return $result;
}
2.接收微信发送的异步支付结果通知
public function actionNotify(){
$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
$postObj = simplexml_load_string($postStr, "SimpleXMLElement", LIBXML_NOCDATA);
//
if ($postObj === false) {
die("parse xml error");
}
if ($postObj->return_code != "SUCCESS") {
die($postObj->return_msg);
}
if ($postObj->result_code != "SUCCESS") {
die($postObj->err_code);
}
//微信支付参数
$appid = Yii::$app->params["wechat"]["appid"];
$mchid = Yii::$app->params["wechat"]["mchid"];
$key = Yii::$app->params["wechat"]["key"];
$wx_pay = new WechatPay($mchid, $appid, $key);
//验证签名
$arr = (array)$postObj;
unset($arr["sign"]);
if ($wx_pay->getSign($arr, $key) != $postObj->sign) {
die("签名错误");
}
//支付处理正确-判断是否已处理过支付状态
$orders = Order::find()->where(["uid"=>$postObj->openid, "oid"=>$postObj->out_trade_no, "status" => 0])->all();
if(count($orders) > 0){
//更新订单状态
foreach ($orders as $order) {
//更新订单
$order["status"] = 1;
$order->update();
}
return "
3.微信支付类 WechatPay.php
mchid = $mchid;
$this->appid = $appid;
$this->key = $key;
}
public function createJsBizPackage($openid, $totalFee, $outTradeNo, $orderName, $notifyUrl, $timestamp){
$config = array(
"mch_id" => $this->mchid,
"appid" => $this->appid,
"key" => $this->key,
);
$unified = array(
"appid" => $config["appid"],
"attach" => "支付",
"body" => $orderName,
"mch_id" => $config["mch_id"],
"nonce_str" => self::createNonceStr(),
"notify_url" => $notifyUrl,
"openid" => $openid,
"out_trade_no" => $outTradeNo,
"spbill_create_ip" => "127.0.0.1",
"total_fee" => intval($totalFee * 100),
"trade_type" => "JSAPI",
);
$unified["sign"] = self::getSign($unified, $config["key"]);
$responseXml = self::curlPost("https://api.mch.weixin.qq.com/pay/unifiedorder", self::arrayToXml($unified));
$unifiedOrder = simplexml_load_string($responseXml, "SimpleXMLElement", LIBXML_NOCDATA);
if ($unifiedOrder === false) {
die("parse xml error");
}
if ($unifiedOrder->return_code != "SUCCESS") {
die($unifiedOrder->return_msg);
}
if ($unifiedOrder->result_code != "SUCCESS") {
die($unifiedOrder->err_code);
}
$arr = array(
"appId" => $config["appid"],
"timeStamp" => $timestamp,
"nonceStr" => self::createNonceStr(),
"package" => "prepay_id=" . $unifiedOrder->prepay_id,
"signType" => "MD5",
);
$arr["paySign"] = self::getSign($arr, $config["key"]);
return $arr;
}
public static function curlGet($url = "", $options = array()){
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
if (!empty($options)) {
curl_setopt_array($ch, $options);
}
//https请求 不验证证书和host
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
public static function curlPost($url = "", $postData = "", $options = array()){
if (is_array($postData)) {
$postData = http_build_query($postData);
}
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
curl_setopt($ch, CURLOPT_TIMEOUT, 30); //设置cURL允许执行的最长秒数
if (!empty($options)) {
curl_setopt_array($ch, $options);
}
//https请求 不验证证书和host
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
public static function createNonceStr($length = 16){
$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
$str = "";
for ($i = 0; $i<$length; $i++){
$str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
}
return $str;
}
public static function arrayToXml($arr){
$xml = "";
foreach ($arr as $key => $val){
if (is_numeric($val)) {
$xml .= "<" . $key . ">" . $val . "";
} else {
$xml .= "<" . $key . ">";
}
}
$xml .= " ";
return $xml;
}
public static function getSign($params, $key){
ksort($params, SORT_STRING);
$unSignParaString = self::formatQueryParaMap($params, false);
$signStr = strtoupper(md5($unSignParaString . "&key=" . $key));
return $signStr;
}
protected static function formatQueryParaMap($paraMap, $urlEncode = false){
$buff = "";
ksort($paraMap);
foreach ($paraMap as $k => $v){
if (null != $v && "null" != $v) {
if ($urlEncode) {
$v = urlencode($v);
}
$buff .= $k . "=" . $v . "&";
}
}
$reqPar = "";
if (strlen($buff)>0) {
$reqPar = substr($buff, 0, strlen($buff) - 1);
}
return $reqPar;
}
}
获取JS-SDK的config参数
根据微信公众平台开发者文档：
所有需要使用JS-SDK的页面必须先注入配置信息，否则将无法调用（同一个url仅需调用一次，对于变化url的SPA的web app可在每次url变化时进行调用,目前Android微信客户端不支持pushState的H5新特性，所以使用pushState来实现web app的页面会导致签名失败，此问题会在Android6.2中修复）。
即：
wx.config({
debug: true, // 开启调试模式,调用的所有api的返回值会在客户端alert出来，若要查看传入的参数，可以在pc端打开，参数信息会通过log打出，仅在pc端时才会打印。
appId: "", // 必填，公众号的唯一标识
timestamp: , // 必填，生成签名的时间戳
nonceStr: "", // 必填，生成签名的随机串
signature: "",// 必填，签名，见附录1
jsApiList: [] // 必填，需要使用的JS接口列表，所有JS接口列表见附录2
});
1.微信支付类 WechatPay.php
$this->appid,
"nonceStr" => $nonceStr,
"timestamp" => $timestamp,
"url" => $url,
"signature" => $signature,
"rawString" => $string
);
return $signPackage;
}
public static function getJsApiTicket() {
//使用Redis缓存 jsapi_ticket
$redis = Yii::$app->redis;
$redis_ticket = $redis->get("wechat:jsapi_ticket");
if ($redis_ticket) {
$ticket = $redis_ticket;
} else {
$accessToken = self::getAccessToken();
$url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=".$accessToken;
$res = json_decode(self::curlGet($url));
$ticket = $res->ticket;
if ($ticket) {
$redis->set("wechat:jsapi_ticket", $ticket);
$redis->expire("wechat:jsapi_ticket", 7000);
}
}
return $ticket;
}
public static function getAccessToken() {
//使用Redis缓存 access_token
$redis = Yii::$app->redis;
$redis_token = $redis->get("wechat:access_token");
if ($redis_token) {
$access_token = $redis_token;
} else {
$appid = Yii::$app->params["wechat"]["appid"];
$appsecret = Yii::$app->params["wechat"]["appsecret"];
$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$appid."&secret=".$appsecret;
$res = json_decode(self::curlGet($url));
$access_token = $res->access_token;
if ($access_token) {
$redis->set("wechat:access_token", $access_token);
$redis->expire("wechat:access_token", 7000);
}
}
return $access_token;
}
public static function curlGet($url = "", $options = array()){
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
if (!empty($options)) {
curl_setopt_array($ch, $options);
}
//https请求 不验证证书和host
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
public static function curlPost($url = "", $postData = "", $options = array()){
if (is_array($postData)) {
$postData = http_build_query($postData);
}
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
curl_setopt($ch, CURLOPT_TIMEOUT, 30); //设置cURL允许执行的最长秒数
if (!empty($options)) {
curl_setopt_array($ch, $options);
}
//https请求 不验证证书和host
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
public static function createNonceStr($length = 16){
$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
$str = "";
for ($i = 0; $i<$length; $i++){
$str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
}
return $str;
}
}
2.获取config参数接口
public function actionConfig(){
if (isset($_REQUEST["url"])) {
$url = $_REQUEST["url"];
//微信支付参数
$appid = Yii::$app->params["wechat"]["appid"];
$mchid = Yii::$app->params["wechat"]["mchid"];
$key = Yii::$app->params["wechat"]["key"];
$wx_pay = new WechatPay($mchid, $appid, $key);
$package = $wx_pay->getSignPackage($url);
$result["error"] = 0;
$result["msg"] = "获取成功";
$result["config"] = $package;
} else {
$result["error"] = 1;
$result["msg"] = "参数错误";
}
return $result;
}
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