[大数据]Laravel + Elasticsearch 实现中文搜索

安装Elasticsearch-php

https://github.com/elastic/elasticsearch-php

使用composer安装：

在项目目录下，执行以下命令

composer require elasticsearch/elasticsearch

配置php.ini

配置php.ini的sys_temp_dir

;sys_temp_dir = "/tmp"
sys_temp_dir = "D:\phpstudy_pro\Extensions\tmp\tmp"

否则，使用过程中可能会出现以下报错

?

?继续composer安装：

composer require tamayo/laravel-scout-elastic

composer require laravel/scout

php artisan vendor:publish

选择：Laravel\Scout\ScoutServiceProvider

?

?修改驱动为?elasticsearch：

'driver' => env('SCOUT_DRIVER', 'elasticsearch'),

创建索引用 Laravel 自带的 Artisan 命令行功能。

php artisan make:command ESOpenCommand

?下面就可以借助插件，创建我们的 Index，直接看代码：

namespace App\Console\Commands;

use Elasticsearch\ClientBuilder;
use Illuminate\Console\Command; 



public function handle()
    {
    $host = config('scout.elasticsearch.hosts');
    $index = config('scout.elasticsearch.index');
    $client = ClientBuilder::create()->setHosts($host)->build();

    if ($client->indices()->exists(['index' => $index])) {
        $this->warn("Index {$index} exists, deleting...");
        $client->indices()->delete(['index' => $index]);
    }

    $this->info("Creating index: {$index}");

    return $client->indices()->create([
        'index' => $index,
        'body' => [
            'settings' => [
                'number_of_shards' => 1,
                'number_of_replicas' => 0
            ],
            'mappings' => [
                '_source' => [
                    'enabled' => true
                ],
                'properties' => [
                    'id' => [
                        'type' => 'long'
                    ],
                    'title' => [
                        'type' => 'text',
                        'analyzer' => 'ik_max_word',
                        'search_analyzer' => 'ik_smart'
                    ],
                    'subtitle' => [
                        'type' => 'text',
                        'analyzer' => 'ik_max_word',
                        'search_analyzer' => 'ik_smart'
                    ],
                    'content' => [
                        'type' => 'text',
                        'analyzer' => 'ik_max_word',
                        'search_analyzer' => 'ik_smart'
                    ]
                ],
            ]
        ]
    ]);
}

?创建mapping

php artisan esoc:mapping

Laravel Model 使用

Laravel 框架已经为我们推荐使用 Scout 全文搜索，我们只需要在 Article Model 加上官方所说的内容即可，很简单，推荐大家看 Scout 使用文档：Scout 全文搜索《Laravel 6 中文文档》，下面直接上代码：

Scout 全文搜索 | 官方扩展包 |《Laravel 6 中文文档 6.x》| Laravel China 社区 (learnku.com)

Scout 提供了 Artisan 命令 import 用来导入所有已存在的记录到搜索索引中。

php artisan scout:import "App\Article"

<?php

namespace App;

use App\Tools\Markdowner;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;
use Laravel\Scout\Searchable;

class Article extends Model
{
    use Searchable;

    protected $connection = 'blog';
    protected $table = 'articles';
    use SoftDeletes;

    /**
     * The attributes that should be mutated to dates.
     *
     * @var array
     */
    protected $dates = ['published_at', 'created_at', 'deleted_at'];

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'user_id',
        'last_user_id',
        'category_id',
        'title',
        'subtitle',
        'slug',
        'page_image',
        'content',
        'meta_description',
        'is_draft',
        'is_original',
        'published_at',
        'wechat_url',
    ];

    protected $casts = [
        'content' => 'array'
    ];

    /**
     * Set the content attribute.
     *
     * @param $value
     */
    public function setContentAttribute($value)
    {
        $data = [
            'raw'  => $value,
            'html' => (new Markdowner)->convertMarkdownToHtml($value)
        ];

        $this->attributes['content'] = json_encode($data);
    }

    /**
     * 获取模型的可搜索数据
     *
     * @return array
     */
    public function toSearchableArray()
    {
        $data = [
            'id' => $this->id,
            'title' => $this->title,
            'subtitle' => $this->subtitle,
            'content' => $this->content['html']
        ];

        return $data;
    }

    public function searchableAs()
    {
        return '_doc';
    }
}

有了数据，我们可以测试看看能不能查询到数据。

还是一样的，创建一个命令：

php artisan make:command ElasearchCommand

class ElasearchCommand extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'command:search {query}';

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

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

    /**
     * Execute the console command.
     *
     * @return mixed
     */
    public function handle()
    {
        $article = Article::search($this->argument('query'))->first();
        $this->info($article->title);
    }
}

?IK 分词器安装

?Releases · medcl/elasticsearch-analysis-ik · GitHub

?总结:

Elasticsearch 安装；
Elasticsearch IK 分词器插件安装；
Elasticsearch 可视化工具 ElasticHQ 和 Kibana 的安装和简单使用；
Scout 的使用；
Elasticsearch 和 Scout 结合使用。

Laravel + Elasticsearch 实现中文搜索 | Laravel China 社区 (learnku.com)