Laravel5.5 综合使用

<blockquote>使用 Laravel5.5 开发一个自动交割的项目，把使用到的开源扩展包及特性整理起来，以供后续使用。</blockquote> <h2>一、安装IDE提示工具</h2> <p>Laravel IDE Helper 是一个极其好用的代码提示及补全工具，可以给编写代码带来极大的便利。</p> <h3>1、安装</h3>

# 如果只想在开发环境安装请加上 --dev
composer require barryvdh/laravel-ide-helper

<p>安装 doctrine/dbal 「请装上它，在为模型注释字段的时候必须用到它」</p>

# 如果只想在开发环境安装请加上 --dev
composer require "doctrine/dbal: ~2.3"

<p>详细安装方法，请参考这篇博文： <a href="https://laravel-china.org/articles/10172/laravel-super-good-code-prompt-tool-laravel-ide-helper" rel="nofollow noreferrer">Laravel 超好用代码提示工具 Laravel IDE Helper</a></p> <p>三个常用命令</p> <blockquote><ul> <li>php artisan ide-helper:generate - 为 Facades 生成注释</li> <li>php artisan ide-helper:models - 为数据模型生成注释</li> <li>php artisan ide-helper:meta - 生成 PhpStorm Meta file</li> </ul></blockquote> <h2>二、Monolog日志包</h2> <p>日志的重要程度不言而喻, 不管是在开发过程中, 还是部署到生产环境后, 都是经常使用的.<br>随着 <code>psr-3</code> 的出现, 终于统一了 <code>php</code> 中日志的风格.但是, 好用的记录日志系统, 也很重要.<br><code>monolog</code> 是我遇到的最好的日志系统.而且, laravel 中也是用的 <code>monolog</code>。</p> <h3>安装</h3>

composer require monolog/monolog

<h3>用法</h3> <p>Github地址：<a href="https://github.com/Seldaek/monolog" rel="nofollow noreferrer">monolog/monolog</a></p>

<?php

use Monolog\Logger;
use Monolog\Handler\StreamHandler;

// create a log channel
$log = new Logger('name');
$log->pushHandler(new StreamHandler('path/to/your.log', Logger::WARNING));
// $logger->pushHandler(new StreamHandler(storage_path() . '/logs/spider.log'));

// add records to the log
$log->warning('Foo');
$log->error('Bar');

<h2>三、抓包工具</h2> <p><a href="https://github.com/guzzle/guzzle" rel="nofollow noreferrer">Guzzle</a> 是一个十分强大的php的模拟HTTP client的第三方库，可以通过composer安装</p> <p><a href="https://github.com/FriendsOfPHP/Goutte" rel="nofollow noreferrer">Goutte</a> 是一个用来解析HTML文档的第三方库，可以通过composer安装</p> <h3>安装</h3>

composer require fabpot/goutte
composer require guzzlehttp/guzzle

<h3>创建命令</h3>

php artisan make:command Spider

<h3>命令参数</h3>

// concurrency为并发数 keyWords为查询关键词
protected $signature = 'command:spider {concurrency} {keyWords*}'; 

<h3>实战</h3>

<?php

namespace App\Console\Commands;

use Goutte\Client as GoutteClient;
use GuzzleHttp\Client as GuzzleClient;
use GuzzleHttp\Pool;
use Illuminate\Console\Command;
use Monolog\Logger;
use Monolog\Handler\StreamHandler;

class Spider extends Command
{

    private $totalPageCount;
    private $counter        = 1;
    private $concurrency    = 7;  // 同时并发抓取
    private $logger         = null;

    private $urls = [
        'https://www.feixiaohao.com/currencies/bitcoin/', // BTC
        'https://www.feixiaohao.com/currencies/decred/',  // DCR
    ];

    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'test:spider-request'; //concurrency为并发数  keyWords为查询关键词


    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'php spider';

    /**
     * Create a new command instance.
     *
     * @return void
     */
    public function __construct()
    {
        parent::__construct();
    }

    /**
     * Execute the console command.
     *
     * @return mixed
     */
    public function handle()
    {
        // 实例化一个日志实例, 参数是 channel name
        $logger = new Logger('spider');
        $logger->pushHandler(new StreamHandler(storage_path() . '/logs/spider.log'));
        $this->totalPageCount = count($this->urls);

        $guzzleClent = new GuzzleClient();
        $client = new GoutteClient();

        $client->setClient($guzzleClent);

        $request = function ($total) use ($client){
            foreach ($this->urls as $url){
                yield function () use($client, $url){
                    return $client->request('GET',$url);
                };
            }
        };

        // @DOC http://docs.guzzlephp.org/en/stable/quickstart.html?highlight=pool
        // /Users/kaiyiwang/Code/digcoin/vendor/symfony/dom-crawler/Crawler.php
        $pool = new Pool($guzzleClent,$request($this->totalPageCount), [
            'concurrency' => $this->concurrency,
            'fulfilled' => function ($response, $index) use ($logger){
                $res = $response->html();
                 // print_r($res);

                $logger->info($res);

                $this->info("请求第 $index 个请求，连接 " . $this->urls[$index]);

                $this->countedAndCheckEnded();
            },
            'rejected' => function ($reason, $index){
                $this->error("rejected" );
                $this->error("rejected reason: " . $reason );
                $this->countedAndCheckEnded();
            },
        ]);

        // 开始发送请求
        $promise = $pool->promise();
        $promise->wait();

    }

    public function countedAndCheckEnded()
    {
        if ($this->counter < $this->totalPageCount){
            $this->counter++;
            return;
        }
        $this->info("请求结束！");
    }

    // 运行命令：php artisan test:spider-request
}

<h3>2.项目中添加定时命令</h3> <p>在 <code>App\Console\Kernel</code> 类的 <code>schedule</code> 方法中定义预定的命令：</p>

 protected function schedule(Schedule $schedule)
    {
        // $schedule->command('inspire')
        //          ->hourly();

        // php artisan test:spider-request, 每十分钟调用一次
        $schedule->command('test:spider-request')
            ->everyFifteenMinutes()->withoutOverlapping();
    }

<p>添加好了之后，我们可以直接使用这个命令测试定时任务是否可以执行：</p>

> php /home/vagrant/Code/digcoin/artisan test:spider-request

<p>OK，只需要简单的两步便可实现laravel的定时任务添加。</p> <p>更多关于Laravel的任务调度，请看考该文：<a href="https://laravel-china.org/docs/laravel/5.5/scheduling/1325" rel="nofollow noreferrer">Laravel 的任务调度（计划任务）功能 Task Scheduling</a></p>

原文地址：https://segmentfault.com/a/1190000015968429

来源：oschina

链接：https://my.oschina.net/u/4408081/blog/3748353