修改登录回调为get3

app/controller/wechat/Login.php

@@ -81,7 +81,7 @@ class Login extends Base
 
         //获取AccessToken
         $getAccessTokenUrl = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid=' .
-            env('wechat.appid') . '&secret=' . env('app.appsecret') . '&code=' . $code .
+            env('wechat.appid') . '&secret=' . env('wechat.appsecret') . '&code=' . $code .
             '&grant_type=authorization_code';
 
         $tokenArr = file_get_contents($getAccessTokenUrl);
@@ -100,7 +100,7 @@ class Login extends Base
 
     private function doLogin(string $openid, array $userDetail): Response {
         $userInfo = (new WechatUser())->where('openid', $openid)->find();
-        if (empty($userInfo)) {
+        if (!empty($userInfo)) {
             $userInfo = WechatUser::create([
                 'nickname'    => $userDetail['nickname'],
                 'openid'      => $openid,