Yii2.0实现微信公众号后台开发

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' => 'yiirestUrlRule','controller' => 'wechat','extraPatterns' => ['GET valid' => 'valid',],],],],3.在app/controllers中新建WechatController<?phpnamespace apicontrollers;use Yii;use yiirestActiveController;class WechatController extends ActiveController{public $modelClass = '';public function actionValid(){$echoStr = $_GET["echostr"];$signature = $_GET["signature"];$timestamp = $_GET["timestamp"];$nonce = $_GET["nonce"];//valid signature , optionif($this->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, $nonce);// use SORT_STRING rulesort($tmpArr, SORT_STRING);$tmpStr = implode( $tmpArr );$tmpStr = sha1( $tmpStr );if( $tmpStr == $signature ){return true;}else{return false;}}}}微信公众号后台配置在微信公众号后台配置URL和Token，然后提交验证即可。URL:http://app.demo.com/wechats/validToken:your token获取用户信息用户表设计CREATE TABLE `wechat_user` (`id` int(11) NOT NULL,`openid` varchar(255) COLLATE utf8_unicode_ci NOT NULL,`nickname` varchar(50) COLLATE utf8_unicode_ci NOT NULL COMMENT '微信昵称',`sex` tinyint(4) NOT NULL COMMENT '性别',`headimgurl` varchar(255) COLLATE utf8_unicode_ci NOT NULL COMMENT '头像',`country` varchar(50) COLLATE utf8_unicode_ci NOT NULL COMMENT '国家',`province` varchar(50) COLLATE utf8_unicode_ci NOT NULL COMMENT '省份',`city` varchar(50) COLLATE utf8_unicode_ci NOT NULL COMMENT '城市',`access_token` varchar(255) COLLATE utf8_unicode_ci NOT NULL,`refresh_token` varchar(255) COLLATE utf8_unicode_ci NOT NULL,`created_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;ALTER TABLE `wechat_user`ADD PRIMARY KEY (`id`);获取用户信息的相关接口1.用户授权接口：获取access_token、openid等；获取并保存用户资料到数据库public function actionAccesstoken(){$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 '<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>';} else {//订单状态已更新，直接返回return '<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>';}}3.微信支付类 WechatPay.php<?phpnamespace apisdk;use Yii;class WechatPay{protected $mchid;protected $appid;protected $key;public function construct($mchid, $appid, $key){$this->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, $options);}//https请求 不验证证书和hostcurl_setopt($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, $options);}//https请求 不验证证书和hostcurl_setopt($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){$xml = "<xml>";foreach ($arr as $key => $val){if (is_numeric($val)) {$xml .= "<" . $key . ">" . $val . "</" . $key . ">";} else {$xml .= "<" . $key . "><![CDATA[" . $val . "]]></" . $key . ">";}}$xml .= "</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1jsApiList: [] // 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<?phpnamespace apisdk;use Yii;class WechatPay{public function getSignPackage($url) {$jsapiTicket = self::getJsApiTicket();$timestamp = time();$nonceStr = self::createNonceStr();// 这里参数的顺序要按照 key 值 ASCII 码升序排序$string = "jsapi_ticket=".$jsapiTicket."&noncestr=".$nonceStr."×tamp=".$timestamp."&url=".$url;$signature = sha1($string);$signPackage = array("appId"=> $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, $options);}//https请求 不验证证书和hostcurl_setopt($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, $options);}//https请求 不验证证书和hostcurl_setopt($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;}以上就是Yii2.0实现微信公众号后台开发的详细内容，更多请关注小潘博客其它相关文章！