完美解决！@JellyBool @Jiang Kun

@Jiang Kun 呃不是不是!!是我有点忙乱，然后没有看见第一条回复。现在马上去试试先谢谢啦！

@Jiang Kun 你的问题解决了？

@JellyBool 好的，代码是更新到服务器了，welcome页面的文字会更新。我先清除下缓存试试。

@JellyBool 没有呀，写在外面了，在帖子顶部有路由的代码。

还有就是版本信息

    "laravel/framework": "5.2.*",
    "overtrue/laravel-wechat": "~3.0"

麻烦诸位了，帮忙看看是什么问题。我是新手，折腾好久了，还是无法解决问题。

路由文件

Route::get('/', function () {
    return view('welcome');
});

Route::group(['middleware' => ['web']], function () {
    // 不要放这里就不会启用 csrf});

Route::any('/wechat', 'WechatController@serve');

控制器文件

class WechatController extends Controller
{
    public function serve()
    {
        Log::info('request arrived.'); 
        $wechat = app('wechat');
        $wechat->server->setMessageHandler(function($message){
            return "欢迎关注 overtrue！";
        });

        Log::info('return response.');

        return $wechat->server->serve();
    }
}

laravel日志

[2016-04-07 17:49:27] local.ERROR: exception 'Illuminate\Session\TokenMismatchException' in /var/www/wechat_riguo/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken.php:67
Stack trace:
#0 [internal function]: Illuminate\Foundation\Http\Middleware\VerifyCsrfToken->handle(Object(Illuminate\Http\Request), Object(Closure))
#1 /var/www/wechat_riguo/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(124): call_user_func_array(Array, Array)
#2 [internal function]: Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
.......后面还有好长......

WeChat日志

[2016-04-07 17:59:40] easywechat.DEBUG: Current configuration: {"debug":true,"use_laravel_cache":true,"app_id":"wxa286a68def0e2c","secret":"8cbb4a67c5b3d50844d6252ccb1817","token":"wechat","aes_key":"OAdbkQMMv7i6wytvBQbsCWCAvlhf6kiofG6R1i9DpCE","log":{"level":"debug","file":"/var/www/wechat_riguo/storage/logs/wechat.log"  []
[2016-04-07 17:59:40] easywechat.DEBUG: Request received: {"Method":"GET","URI":"/wechat?signature=bdf0cd824e1d0ef663f9d093308480e6565e0f62&echostr=3427265654774280636&timestamp=1460051980&nonce=413835758","Query":"echostr=3427265654774280636&nonce=413835758&signature=bdf0cd824e1d0ef663f9d093308480e6565e0f62&timestamp=1460051980","Protocal":"HTTP/1.0","Content":""} []
[2016-04-07 17:59:40] easywechat.DEBUG: Output 'echostr' is '3427265654774280636'. [] []

*******

shadowsocks，部署在路由器里面，实现所有接入的终端，自动科学上网，而且有智能模式，不影响国内。哎，不多说了，怕查水表的。