网上有很多关于YII2.0微信开发教程，但是太过复杂凌乱，所以今天在这里给大家整理总结利用Yii2微信后台开发的系列了，给需要的小伙伴们参考。
一：接入微信
Yii2后台配置
1.在app/config/params.PHP中配置token参数
[
'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。
[
'enablePrettyUrl' => true,'enableStrictParsing' => true,'showScriptName' => false,'rules' => [
[
'class' => 'yii\rest\UrlRule','controller' => 'wechat','extraPatterns' => [
'GET valid' => 'valid',
3.在app/controllers中新建WechatController
PHP;">
namespace api\controllers;
use Yii;
use yii\rest\ActiveController;
class WechatController extends ActiveController
{
public $modelClass = '';
public function actionValid()
{
$echoStr = $_GET["echostr"];
$signature = $_GET["signature"];
$timestamp = $_GET["timestamp"];
$nonce = $_GET["nonce"];
//valid signature,option
if($this->checkSignature($signature,$timestamp,$nonce)){
echo $echoStr;
}
}
private function checkSignature($signature,$nonce)
{
// you must define TOKEN by yourself
$token = Yii::$app->params['wechat']['token'];
if (!$token) {
echo 'TOKEN is not defined!';
} else {
$tmpArr = array($token,$nonce);
// use SORT_STRING rule
sort($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。
PHP;">
URL:http://app.demo.com/wechats/valid
Token:your token
二：获取用户信息
用户表设计
代码如下:
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
代码如下:
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);
}
}
代码如下:
response($result);
return $result;
}
where(['openid'=>$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;
}
三：微信支付
1.微信支付接口：打包支付数据
代码如下:
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 $result;
}
2.接收微信发送的异步支付结果通知
代码如下:
return_code != 'SUCCESS') {
die($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,$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
代码如下:
mchid = $mchid;
$this->appid = $appid;
$this->key = $key;
}
public function createJsBizPackage($openid,$outTradeNo,$orderName,$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,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($ch,1);
curl_setopt($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,$url);
curl_setopt($ch,CURLOPT_POST,CURLOPT_POSTFIELDS,$postData);
curl_setopt($ch,30); //设置cURL允许执行的最长秒数
if (!empty($options)) {
curl_setopt_array($ch,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 . "";
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,strlen($buff) - 1);
}
return $reqPar;
}
}
四：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：
代码如下:
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
代码如下:
$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 = ";
$res = json_decode(self::curlGet($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 = ";
$res = json_decode(self::curlGet($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 = '',1);
}
return $str;
}
}
2.获取config参数接口
params['wechat']['appid'];
$mchid = Yii::$app->params['wechat']['mchid'];
$key = Yii::$app->params['wechat']['key'];
$wx_pay = new WechatPay($mchid,$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;
}
