标题：PHP7框架之Lumen之Hello World,PHP7下的Lumen (5.5.*)框架之Hello World,如何调用Models下面的数据层，触目了解其MVC思想和取数据成功实践于基于其领悟，学下先进。
出处：向东博客 专注WEB应用 构架之美 --- 构架之美，在于尽态极妍 | 应用之美，在于药到病除
时间：Fri, 13 Jan 2017 15:20:12 +0000
作者：jackxiang
地址：http://jackxiang.com/post/9177/

内容：
背景：听说Lumen起家是以一个叫av的框架，larvael。以Auth2.0起步，Lumen是精简版本，于是想了解一下。发现居然边TM路由就卡住了，Fuck，不光是我老外也有这个问题，都没有解决，主要是一个Nginx的转写问题，这块在Lumen的文档里写的很垃圾，我都不知这些人是怎么写文档的，有用Apache，有Nginx的就不能写细一点么，说一下原理啥的，关键是Nginx配置文件里面的：location /里面的重写。
From:http://blog.csdn.net/wowkk/article/details/52104689

Lumen 5.5.*版本的Lumen，目录：lumen-clear-edition
composer create-project laravel/lumen lumen-clear-edition --prefer-dist  "5.5.*"  # proc_open,

 vi ms/survey/bootstrap/app.php 
require __DIR__.'/../config/providers.php'

vi ms/survey/config/providers.php 
<?php
$app->register(Common\Providers\RedisServiceProvider::class);
$app->register(Common\Providers\MysqlServiceProvider::class);
$app->register(Common\Providers\KafkaServiceProvider::class);
$app->register(Common\Providers\EventServiceProvider::class);
$app->register(Common\Providers\QueueServiceProvider::class);

注册的文件在：
ls ./lumen-clear-edition/common/Providers
EventServiceProvider.php  MysqlServiceProvider.php  RedisServiceProvider.php

启动方法：
启动方法#服务提供者中注册一个视图 composer 则应该在 boot 方法中完成。此方法会在所有其它的服务提供者被注册后才被调用，意味着你能访问已经被框架注册的所有其它服务：https://lumen.laravel-china.org/docs/5.3/providers，ServiceProvider类，和绑定easy_kafka类：
lumen-clear-edition/common/Providers/KafkaServiceProvider.php

<?php
namespace Common\Providers;
use Illuminate\Support\ServiceProvider;

class KafkaServiceProvider extends ServiceProvider{

        public function register(){
                $this->app->bind('easy_kafka',function(){
                        return new \Common\Service\Kafka\Kafka(); #vi lumen-clear-edition/common/Service/Kafka/Kafka.php 绑定的easy_kafka这个类名在这儿： lumen-clear-edition/common/Facades/Kafka.php
                });
        }
}

vi lumen-clear-edition/common/Service/Kafka/Kafka.php   #自己写这个类的方法。

<?php
namespace Common\Service\Kafka;

use Kafka\ProducerConfig;
use Kafka\Producer;
use Illuminate\Support\Facades\Config;

Class Kafka{


绑定的easy_kafka在这儿:
lumen-clear-edition/common/Facades/Kafka.php

<?php
namespace Common\Facades;
use Illuminate\Support\Facades\Facade;

class Kafka extends Facade{
        protected static function getFacadeAccessor(){
                return 'easy_kafka';
        }
}


ms/survey/app/Http/Controllers/Api/V1/ActivityController.php  #路由@./ms/survey/routes/web.php 
$router->group(['namespace'=>'Api\V1'], function () use ($router) {
    $router->post('activity/form', ['uses' => 'ActivityController@form']);

use App\Helpers\Client\SurveyClient;
public function form(Request $request){
  ......
  $client = new SurveyClient();
  $client->reportInfo($data);
}


ms/survey/app/Helpers/Client/SurveyClient.php  

namespace App\Helpers\Client;
use Common\Facades\Queue as Queue;  #这句引入ms/lumen-clear-edition/common/Facades/Queue.php
public function reportInfo($info){
  Queue::load('mysql')->push('survey_reportInfo',['class'=>'survey','method'=>'reportInfo','dataKey'=>"survey_reportInfo_{$info['iid']}_{$info['uid']}"],$info);
}


类的加载，common文件夹位置：
    "autoload": {
        "psr-4": {
            "App\\": "app/",
            "Common\\": "common/"
        }
    },
#composer dump-autoload --optimize
Do not run Composer as root/super user! See https://getcomposer.org/root for details
Generating optimized autoload files

生成文件在这儿(挪动一下文件放到新目录，建议重新运行一下这个：composer dump-autoload --optimize，再就是如果有PHP的OPcache得重新启动一下PHP-FPM或关闭掉Opcache，/usr/local/php/etc/php.d/opcache.ini ，opcache.enable=0)：
./lumen-clear-edition/vendor/composer/autoload_psr4.php:    'Common\\' => array($baseDir . '/common'),
More:

    'DeepCopy\\' => array($vendorDir . '/myclabs/deep-copy/src/DeepCopy'),
    'Cron\\' => array($vendorDir . '/mtdowling/cron-expression/src/Cron'),
    'Common\\' => array($baseDir . '/common'),
    'Carbon\\' => array($vendorDir . '/nesbot/carbon/src/Carbon'),
    'Amp\\' => array($vendorDir . '/amphp/amp/lib'),


#find ./ -mtime 0 -type f
./composer.json   <== "Common\\": "common/"
./app/Http/Controllers/Api/V1/ActivityController.php
./app/Helpers/Client/SurveyClient.php
./common/Providers/UserServiceProvider.php
./common/Facades/User.php
./common/Services/User/User.php
./config/providers.php


composer dump-autoload --optimize改动的：
./vendor/autoload.php  ==》return ComposerAutoloaderInit7d1969d6b0c0a5e119f2b7e0932178e2::getLoader();
./vendor/composer/autoload_psr4.php
./vendor/composer/autoload_static.php
./vendor/composer/autoload_classmap.php
./vendor/composer/autoload_files.php
./vendor/composer/ClassLoader.php
./vendor/composer/autoload_namespaces.php
./vendor/composer/autoload_real.php

访问URL: http://47.93.207.136/activity/survey
最后，这个Provider的类如何使用参考，但写得不是很明白，最新版本的和实际使用并不定一模一样的：http://www.cnblogs.com/cxscode/p/7569856.html



路由：https://lumen.laravel.com/docs/5.4
中文文档：http://laravelacademy.org/laravel-docs-5_4
5.4这个路由，老外写得很简单，这帮人可能是想你去看他的代码吧，有很多人在问：
http://www.thinksaas.cn/ask/question/22000/
class KafkaServiceProvider extends ServiceProvider{
 return new \Common\Service\Kafka\Kafka(); #lumen-clear-edition/common/Service/Kafka/Kafka.php
lumen-clear-edition/common/Service/Kafka/Kafka.php 里：

use Kafka\ProducerConfig;
use Kafka\ProducerConfig;
use Kafka\Producer;
use Illuminate\Support\Facades\Config;
$this->_config = Config::get('kafka'); 




做微服务：/usr/local/nginx/conf/vhosts/ms.conf

server{
    listen 80 default_server;
    server_name  10.70.**.142;
    access_log   /data/logs/nginx/ms-access.log main;
    error_log    /data/logs/nginx/ms-error.log  warn;
    root /data/www/ms/;

    rewrite ^/(survey)/.*$ /$1/public/index.php last;

    location / {
        index index.shtml index.html index.htm index.php;
    }

    location ~ .*\.(php|php5)?$ {
        include fastcgi_params;
        fastcgi_pass unix:/dev/shm/php-fcgi.sock;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    }
}

server_name  10.70.**.142;
root /data/www/ms/;
rewrite ^/(survey)/.*$ /$1/public/index.php last;
http://10.70.33.140/survey/public/index.php
/data/www/ms/survey/public/index.php
路由：
/data/www/ms/survey/routes/web.php

一)$app->group(['prefix' => 'private','namespace'=>'Api\V1'], function () use ($app) {
    $app->get('survey/list', ['uses' => 'SurveyController@list']);
http://47.93.207.136/private/survey/list
app/Http/Controllers/Api/V1/SurveyController.php

二）$app->group(['namespace'=>'Api\V1'], function () use ($app) {
    $app->get('activity/survey', ['uses' => 'ActivityController@survey']);
http://47.93.207.136/activity/survey
app/Http/Controllers/Api/V1/ActivityController.php 里有一行：
$client = new SurveyClient();
./app/Helpers/Client/SurveyClient.php:class SurveyClient{

<?php
namespace App\Helpers\Client;

use Common\Facades\Redis as Redis;    #./lumen-clear-edition/common/Facades/Redis.php 
use Common\Facades\DB as DB;           # ls ./lumen-clear-edition/common/Facades/DB.php 
use Common\Facades\Queue as Queue; # 在框架目录：ls ./lumen-clear-edition/common/Facades/Queue.php 

class SurveyClient{


Lumen (5.5.2) (Laravel Components 5.5.*),路由的写法有点不一样：
$router->group(['prefix' => 'private','namespace'=>'Api\V1'], function () use ($router) {
        $router->get('survey/list', ['uses' => 'SurveyController@list']);

$router->group(['namespace'=>'Api\V1'], function () use ($router) {
        $router->get('activity/survey', ['uses' => 'ActivityController@survey']);


调用层级及配置文件的一个情况，二是如何引入框架目录的入口：
./app/Http/Controllers/Api/V1/SurveyController.php:class SurveyController extends Controller{
/**
 * 删除互动
 */
public function delete(Request $request){
  $iid = intval($request->input('iid'));
  $res = Survey::deleteSurvey($iid);#调用Models
  return $this->out($res?1:0,$res?"success":"failed");
}

调用Models位置：
./app/Models/Survey.php:        public static function deleteSurvey($iid){

<?php
namespace App\Models;
use Common\Facades\DB as DB;
use Common\Helpers\UnifiedIdHelper;
use App\Helpers\Server\SurveyServer;

class Survey{
/**
 * 删除指定活动
 * @param  [type] $iid [description]
 * @return [type]      [description]
 */
public static function deleteSurvey($iid){
  return DB::connection()->table('survey')->where('id',$iid)->update(['state'=>1]);
}

配置文件：
/data/www/ms/survey/config_production/database.php
/data/www/ms/survey/config_production/kafka.php
/data/www/ms/survey/config_production/redis.php

vi /data/htdocs/lumen.levoo.com/bootstrap/app.php   #引入框架目录

require_once __DIR__.'/../vendor/autoload.php';
//实现App命名空间自动注册
$loader = new \Composer\Autoload\ClassLoader();
$loader->setPsr4('App\\',__DIR__.'/../app/');
$loader->register(true);
./bootstrap/app.php:require_once __DIR__.'/../../lumen-clear-edition/vendor/autoload.php';



======================================================================================
Lumen 中可以使用的 Facades，查看源代码，可用清单如下（https://segmentfault.com/a/1190000002902055）：
/survey/bootstrap/app.php:$app->withFacades();  $app->withFacades();
./lumen-clear-edition/vendor/laravel/lumen-framework/src/Application.php:    public function withFacades($aliases = true, $userAliases = [])
./vendor/laravel/lumen-framework/src/Application.php
public function withAliases($userAliases = [])
if (! static::$aliasesRegistered) {
  static::$aliasesRegistered = true;

  $merged = array_merge($defaults, $userAliases);

  foreach ($merged as $original => $alias) {
    class_alias($original, $alias);
  }
}


==========================================================================================
/usr/local/composer/composer.phar  global require "laravel/lumen-installer"
https://lumen.laravel.com/docs/5.4#server-requirements 下面的：
chmod a+x /root/.config/composer/vendor/laravel/lumen-installer/lumen
/root/.config/composer/vendor/bin/lumen new lumen.levoo.com

/data/htdocs/lumen.levoo.com/blog/routes/web.php

你可以将所有路由都定义在routes/web.php中。最基本的 Lumen 路由接收:
http://laravelacademy.org/post/6337.html



$app->group(['prefix'=>'test'],function($app){
    $app->get("/index",["uses" => "TestController@index"]);
                                                                                                                                                                                                               
});


【lumen】基础点记录使用：blog.csdn.net/imdingding/article/details/48679359
app/Http/routes.php中进行路由配置可以使用如下路由组的形式，在路由上lumen和laravel有一些区别
$app->group(['prefix' => 'scrollnews','namespace' => 'App\Http\Controllers'],function($app) {
$app->get('/','NewsController@showall');
$app->get('/{time}_{newpage}.htm','NewsController@showtime');
$app->get('/{newpage}.htm', 'NewsController@show');

});


http://123.57.252.183/test/index
hello Lumen (5.4.5) (Laravel Components 5.4.*)
/data/htdocs/lumen.levoo.com/app/Http/Controllers/TestController.php

<?php

namespace App\Http\Controllers;

use App\user;   //新增部分
use Laravel\Lumen\Routing\Controller as BaseController;
use Illuminate\Http\Request;

class TestController extends BaseController
{
    //直接传人sql方式操作数据库
    function index(Request $request){
        echo "hello Lumen (5.4.5) (Laravel Components 5.4.*)。";die;                                                                                                                                           
        return User::all();
    }
}


以上实践来源及变通参看了：http://blog.5ibc.net/p/87952.html

PHP message: PHP Fatal error:  Uncaught UnexpectedValueException: The stream or file "/data/htdocs/lumen.levoo.com/storage/logs/lumen.log" could not be opened: failed to open stream: Permission denied in /data/htdocs/lumen.levoo.com/vendor/monolog/monolog/src/Monolog/Handler/StreamHandler.php:107
mkdir
chmod -R 755 /data/htdocs/lumen.levoo.com/storage
chown -R www /data/htdocs/lumen.levoo.com/storage


Controller类的写法：https://segmentfault.com/q/1010000002727820
/data/htdocs/lumen.levoo.com/blog/app/Http/Controllers/AccountController.php



关于数据库配置文件：
默认情况下, Lumen 使用单一的 .env 文件来配置你的应用, 然而, 你也可以使用 Laravel 风格 的配置方法.
/data/htdocs/lumen.levoo.com/vendor/laravel/lumen-framework/config/database.php
文件夹下对应的配置文件复制到根目录下的 config 文件里面就行.
https://lumen.laravel-china.org/docs/5.3/configuration#configuration-files

Redis:
CACHE_DRIVER=file
SESSION_DRIVER=redis
QUEUE_DRIVER=sync

REDIS_HOST=192.168.1.248
REDIS_PASSWORD=null
REDIS_PORT=6379



今天在部署服务器的时候，使用composer来安装依赖。遇到了如下情况，这块出错好像和Redis配置有关，得在.env里配置好并运行起来。
　　The Process class relies on proc_open, which is not available on your PHP installation.
  [ErrorException]                                          
  proc_get_status() has been disabled for security reasons 
　　开始的时候，我有些不知所措，于是冷静下来思考一番，然后goolge了一下
解决方法：
　　在php.ini中，找到disable_functions选项，看看后面是否有proc_open函数被禁用了，如果有的话，去掉即可
　　其实如果php的文档熟悉的话，你应该马上就能知道proc_open实际上是一个函数，是php用来和shell交互的函数，一般这种可以直接作用于操作系统的函数是非常不安全的，对于这种不安全的函数，总是要做一些措施来进行保护

php artisan make:migration create_table_cars --create=cars
php artisan make:migration create_table_cars --create=cars
Created Migration: 2017_03_04_160644_create_table_cars
/data/htdocs/lumen.levoo.com/database/migrations/2017_03_04_160644_create_table_cars.php

    public function up()
    {
        Schema::create('cars', function (Blueprint $table) {
            $table->increments('id');
            $table->string('make');                                                                                                                                  
            $table->string('model');
            $table->string('year');
            $table->timestamps();
        });
    }



php artisan migrate
Migrated: 2017_03_04_161708_create_table_cars

migrations记录历史 /car 两个表：
id int(10) UNSIGNED
make  varchar(255)
model varchar(255)
year varchar(255)
create d_attimestamp


问题实践来源：http://www.cnblogs.com/crisenchou/p/6237781.html
打开方法来自:http://www.codesec.net/view/497671.html?winzoom=1



Model这块和Controll层的配置：
1）Controll层， /data/htdocs/lumen.levoo.com/app/Http/Controllers/TestController.php

<?php

namespace App\Http\Controllers;
use App\Models\Information;
use App\Models\Collection;

//use App\User;     //新增部分APP目录下
use App\Models\User; //App\Models\User目录下
use Laravel\Lumen\Routing\Controller as BaseController;
use Illuminate\Http\Request;

class TestController extends BaseController
{
    //直接传人sql方式操作数据库
    function index(Request $request){
        /*
            $UserModel = new User();
            $result = $User::all(); //这样也成
            $result2 = $UserModel::all2(); //这样也成
        */
        $result = User::all();
        $result2 = User::all2();//这个在Model自定义的all2也能被调用输出结果

        print_r($result);
        echo "<hr>";                                                                                                                                                                                           
        print_r($result2);
    }
}


2）Model层：/data/htdocs/lumen.levoo.com/app/Models/User.php

<?php
//namespace App; //这个得注释掉，容易和App/User.php发生错误引用。
namespace App\Models;

use Illuminate\Database\Eloquent\Model;
//默认操作数据库的users表，需要定制的话请看文档,下面有自己的配置。
class User extends Model
{
    /**
    * The connection name for the model.
    *
    * @var string
    */
    protected $connection = 'mysql';

    /**
    * 表名
    *
    * @var string
    */
    protected $table = 'levoo_sns_user'; //指定操作表名
    protected $primaryKey = "id";        //指定主键
    public $timestamps = false;
    protected $dateFormat = 'U';

    static public function all2(){
        $User = User::all();
        return $User;                                                                                                                                                                                          
    }
}


=================MVC模板学习=============================
/data/htdocs/lumen.levoo.com/app/Http/Controllers/TestController.php

<?php

namespace App\Http\Controllers;
use App\Models\Information;
use App\Models\Collection;

//use App\User;     //新增部分APP目录下
use App\Models\User; //App\Models\User目录下
use Laravel\Lumen\Routing\Controller as BaseController;
use Illuminate\Http\Request;

class TestController extends BaseController
{
    //直接传人sql方式操作数据库
    function index(Request $request){
        /*
            $UserModel = new User();
            $result = $User::all(); //这样也成
            $result2 = $UserModel::all2(); //这样也成
        */
        $result = User::all();
        //$result2 = User::all2();//这个在Model自定义的all2也能被调用输出结果
        /*
        print_r($result);                                                                                                                                            
        echo "<hr>";
        print_r($result2);
        */
        //view()->exists('user');
        return view('test', ['name' => 'jackX','results' => $result]);
    }
}


vi /data/htdocs/lumen.levoo.com/resources/views/test.blade.php


<!-- 该视图存放 resources/views/greeting.php -->

<html>
    <body>
        <h1>Hello, {{ $name }}</h1>
        <h1>Hello, {{ $name2 or 'Default' }}</h1>
        <h1>Hello, {!! $name !!}</h1>
        <h1>Array, {{ $results}}</h1>
        <h1>Array, {!! $results !!}</h1>
        Blade for each:<br>
        <h1>
            @foreach ($results as $user)
                <ul>
                <li>This is user {{ $user->id }}</li>
                <li>This is user {{ $user->mobile }}</li>
                <li>This is user {{ $user->fansmobile }}</li>
                <li>This is user {{ $user->followedTime }}</li>
                </ul>
            @endforeach
        </h1>
        <h1>
            @foreach ($results as $user)
                <ul>
                @if ($user->id == 1)
                   用户Id=1，标识一下:
                @endif
                <li>This is user {{ $user->id }}</li>
                <li>This is user {{ $user->mobile }}</li>
                <li>This is user {{ $user->fansmobile }}</li>
                <li>This is user {{ $user->followedTime }}</li>
                </ul>
            @endforeach
        </h1>
        <h1>只显示id=1的区块：</h1>
        <h1>
            @foreach ($results as $user)
                <ul>
                 @continue($user->id == 2)
                <li>This is user {{ $user->id }}</li>
                <li>This is user {{ $user->mobile }}</li>
                <li>This is user {{ $user->fansmobile }}</li>
                <li>This is user {{ $user->followedTime }}</li>
                </ul>
                 @break($user->id == 1)
            @endforeach
        </h1>
    </body>
</html>




模板输出：http://123.57.252.183/test/index
Hello, jackX

Hello, Default

Hello, jackX

Array, [{"id":1,"mobile":"1881**65108","fansmobile":"18810322234","followedTime":1211212121},{"id":2,"mobile":"1881**65108","fansmobile":"18810322232","followedTime":121212}]

Array, [{"id":1,"mobile":"1881**65108","fansmobile":"18810322234","followedTime":1211212121},{"id":2,"mobile":"1881**65108","fansmobile":"18810322232","followedTime":121212}]

Blade for each:
This is user 1
This is user 1881**65108
This is user 18810322234
This is user 1211212121
This is user 2
This is user 1881**65108
This is user 18810322232
This is user 121212
用户Id=1，标识一下:
This is user 1
This is user 1881**65108
This is user 18810322234
This is user 1211212121
This is user 2
This is user 1881**65108
This is user 18810322232
This is user 121212
只显示id=1的区块：

This is user 1
This is user 1881**65108
This is user 18810322234
This is user 1211212121

这个叫Blade的模板引擎解析成PHP的，也就是相当于没有啥大的损耗，如果它的算法还算先进的前提下，位置在：
/data/htdocs/lumen.levoo.com/storage/framework/views/9e3b647aebb6a248d1ae42408e87c3fc7f5bc520.php
为什么这么说呢，如下，我在想为何要搞成这样，PHP裸写不也一样么，像Ci框架啥的，思考思考，这样也算是能模板和程序分离罢：


        <h1>只显示id=1的区块：</h1>
        <h1>
            <?php $__currentLoopData = $results; $__env->addLoop($__currentLoopData); foreach($__currentLoopData as $user): $__env->incrementLoopIndices(); $loop = $__env->getLastLoop(); ?>
                <ul>
                 <?php if($user->id == 2) continue; ?>
                <li>This is user <?php echo e($user->id); ?></li>
                <li>This is user <?php echo e($user->mobile); ?></li>
                <li>This is user <?php echo e($user->fansmobile); ?></li>
                <li>This is user <?php echo e($user->followedTime); ?></li>
                </ul>
                 <?php if($user->id == 1) break; ?>
            <?php endforeach; $__env->popLoop(); $loop = $__env->getLastLoop(); ?>
        </h1>



主要是对这个模板有一个大体理解，和Smarty啥的有一个初步了解，参考自:
http://laravelacademy.org/post/6780.html




======================================================================
Nginx配置文件：

server
{
    listen       80 default_server;
    server_name  101.200.189.210 lumen.levoo.com;
    index index.html index.htm index.php;
    root  /data/htdocs/lumen.levoo.com/blog/public;
    autoindex on;
    autoindex_exact_size off;
    autoindex_localtime on;


    location ~ .*\.(php|php5)?$
    {
        fastcgi_pass unix:/dev/shm/php-fcgi.sock;
        fastcgi_index index.php;
        include fastcgi.conf;
    }

    location / {
        try_files $uri $uri/ /index.php?$query_string;
        #if (!-f $request_filename){                                                                                                  
        #    rewrite ^/(.+)$ /index.php?s=$1 last;
        #    break;
        #}
    }
    access_log /data/logs/nginx/access_lumen_levoo.log;
}



上面location / {里被注释掉的也成，只是优雅度不够，这块好像手册有说明，我当时把 try_files $uri $uri/ /index.php?$query_string;放到location ~ .*\.(php|php5)?$ 里了，发现不对。

http://123.57.252.183/foo
Hello World


老外：
http://stackoverflow.com/questions/32281294/lumen-simple-route-request-doesnt-work
老外也有这个问题：
http://laravel.io/forum/05-08-2014-nginx-laravel-routing-shows-404?page=1

主从数据库配置(多台读库配置):
http://blog.sina.com.cn/s/blog_9bbafb790102win1.html
基于Lumen搭建一个OAUTH2认证的API框架:
http://www.bibihub.com/php/lumen-mobile-api-oauth-2-authentication/

========DB学习=========
基本使用
注意：如果你想要使用DB门面，应该取消bootstrap/app.php文件中$app->withFacades()调用前的注释
vi bootstrap/app.php

下面这个需要门面：

$app->get('/foo', function () use ($app) {
    $results = app('db')->select("SELECT * FROM levoo_sns_user");
    print_r($results);
    $results = DB::select("SELECT * FROM levoo_sns_user");//这个需要门面
    print_r($results);
    return 'Hello World';                                           
});

一些报错的日志：SQLSTATE[HY000] [2002] Connection refused
grep: ./survey/config_production/config_production: Too many levels of symbolic links
./survey/config_production/app.php:    'lumen_log_path'=>'/data/logs/lumen/survey.log',  //框架日志
grep: ./survey/config/config_production: Too many levels of symbolic links
./survey/config/app.php:    'lumen_log_path'=>'/data/logs/lumen/survey.log',  //框架日志
tail -f survey.log 
Next Illuminate\Database\QueryException: SQLSTATE[HY000] [2002] Connection refused (SQL: select count(*) as aggregate from `survey` where `type` = 0 and `user` = 271 and `state` = 0) in /data/www/ms/lumen-clear-edition/vendor/illuminate/database/Connection.php:664


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