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教你在laravel如何使用elaticsearch(步驟分明)

藏色散人
藏色散人轉載
2021-10-15 15:24:562463瀏覽

以下由Laravel教學專欄帶大家介紹在laravel如何使用elaticsearch(步驟分明),希望對大家有幫助!

安裝相關擴充包

  • guzzlehttp/guzzle
  • elasticsearch/elasticsearch
  • #laravel /scout
  • babenkoivan/scout-elasticsearch-driver
  • predis/predis  資料量大需要使用佇列同步、拉取資料時安裝

#1.安裝guzzlehttp/guzzle

composer require guzzlehttp/guzzle

#在app/Services 目錄下編寫Http 服務類別

<?php

namespace App\Services;use GuzzleHttp\Client;use GuzzleHttp\Cookie\CookieJar;class HttpService{

    protected $client;

    public function __construct()
    {
        $this->client = new Client(['verify' => false, 'timeout' => 0,]);
    }

    /**
     * 发送 get 请求
     * @param $url
     * @param array $aQueryParam
     * @param string $isDecode
     * [@return](https://learnku.com/users/31554) mixed
     * @throws \GuzzleHttp\Exception\GuzzleException
     */
    public function get($url, $aQueryParam = [], $isDecode = true)
    {
        $response = $this->client->request('GET',
            $url,
            [
                'query' => $aQueryParam            ]);
        if($isDecode){
            return \GuzzleHttp\json_decode($response->getbody()->getContents(), true);
        }
        return $response->getbody()->getContents();
    }

    /**
     *  发送 post 请求
     * @param $url
     * @param array $aParam
     * @param string $type
     * @param string $isDecode
     * [@return](https://learnku.com/users/31554) mixed
     * @throws \GuzzleHttp\Exception\GuzzleException
     */
    public function post($url, $aParam = [], $type = 'form_params', $isDecode = true)
    {
        $aOptions = [];
        // Sending application/x-www-form-urlencoded POST
        if ($type == 'form_params') {
            $aOptions['form_params'] = $aParam;
        }
        //  upload JSON data
        if ($type == 'json') {
            $aOptions['json'] = $aParam;
        }
        $response = $this->client->request('POST', $url, $aOptions);

        if($isDecode){
            return \GuzzleHttp\json_decode($response->getbody()->getContents(), true);
        }
        return $response->getbody()->getContents();
    }

    /**
     *  发送 put 请求
     * @param $url
     * @param array $aParam
     * @param string $type
     * @param string $isDecode
     * [@return](https://learnku.com/users/31554) mixed
     * @throws \GuzzleHttp\Exception\GuzzleException
     */
    public function put($url, $aParam = [], $type = 'form_params', $isDecode = true)
    {
        $aOptions = [];
        // Sending application/x-www-form-urlencoded POST
        if ($type == 'form_params') {
            $aOptions['form_params'] = $aParam;
        }
        //  upload JSON data
        if ($type == 'json') {
            $aOptions['json'] = $aParam;
        }
        $response = $this->client->request('PUT', $url, $aOptions);

        if($isDecode){
            return \GuzzleHttp\json_decode($response->getbody()->getContents(), true);
        }
        return $response->getbody()->getContents();
    }

    /**
     * 保存远程文件到本地
     * 跟随第三方服务器url重定向
     * @param $url
     * [@return](https://learnku.com/users/31554) bool|string
     */
    public function getRemoteFile($url)
    {
        $jar = new CookieJar();
        $aOptions = ['cookies' => $jar];
        $response = $this->client->request('GET', $url, $aOptions);
        return $response->getBody()->getContents();
    }}

#2.安裝elasticsearch/elasticsearch

composer require elasticsearch/elasticsearch

3.安裝laravel/scout

composer require laravel/scout

php artisan vendor:publish --provider="Laravel\Scout\ScoutServiceProvider"

4.安裝scout 第三方驅動程式babenkoivan/scout-elasticsearch-driver

composer require babenkoivan/scout-elasticsearch-driver

php artisan vendor:publish --provider="ScoutElastic\ScoutElasticServiceProvider"

scout 服務配置,在env 中增加配置項目

// 驱动的host,若需账密:http://es_username:password@127.0.0.1:9200SCOUT_ELASTIC_HOST=elasticsearch:9200// 驱动SCOUT_DRIVER=elastic// 队列配置,数据量大时建议开启SCOUT_QUEUE=true

5.安裝predis/predis

composer require predis/predis

#初始化elatic Template

  • 這裡以artisan 指令的方式設定產生指令檔

    php artisan make:command EsInit
    <?php
    namespace App\Console\Commands;use App\Services\HttpService;use Illuminate\Console\Command;class EsInit extends Command{
      /**
       * The name and signature of the console command.
       *
       * @var string
       */
      protected $signature = &#39;es:init&#39;;
    
      /**
       * The console command description.
       *
       * @var string
       */
      protected $description = &#39;init laravel es for article&#39;;
    
      /**
       * Create a new command instance.
       *
       * [@return](https://learnku.com/users/31554) void
       */
      protected  $http;
      public function __construct()
      {
          parent::__construct();
          parent::__construct();
          $this->http = new HttpService();
      }
    
      /**
       * Execute the console command.
       *
       * [@return](https://learnku.com/users/31554) mixed
       */
      public function handle()
      {
          $this->createTemplate();
      }
      protected function createTemplate()
      {
          $aData = [
              /*
              * 这句是取在scout.php(scout是驱动)里我们配置好elasticsearch引擎的index项。
              * PS:其实都是取数组项,scout本身就是return一个数组,
              * scout.elasticsearch.index就是取
              * scout[elasticsearch][index]
              * */
              'template'=>config('scout.elasticsearch.index'),
              'mappings'=>[
                  'articles' => [
                      'properties' => [
                          'title' => [
                              'type' => 'text'
                          ],
                          'content' => [
                              'type' => 'text'
                          ],
                          'created_at' => [
                              'format' => 'yy-MM-dd HHss',
                              'type' => 'date'
                          ],
                          'updated_at' => [
                              'format' => 'yy-MM-dd HHss',
                              'type' => 'date'
                          ]
                      ]
                  ]
              ],
          ];
          $url = config('scout.elasticsearch.hosts')[0] . '/' . '_template/rtf';
          $this->http->put($url,$aData,'json');
      }}

    產生檢索model

    #
    php artisan make:model Models/Article

建立model 索引設定檔

  • Elasticsearch\ArticleIndexConfigurator.php
    <?php
    namespace App\Elasticsearch;use ScoutElastic\IndexConfigurator;use ScoutElastic\Migratable;class ArticleIndexConfigurator extends IndexConfigurator{
      use Migratable;
      protected $name = &#39;articles&#39;;
      /**
       * @var array
       */
      protected $settings = [
          &#39;analysis&#39; => [
              'analyzer' => [
                  'es_std' => [
                      'type' => 'standard',
                      'stopwords' => '_spanish_'
                  ]
              ]
          ]
      ];}

建立model 檢索規則檔案

  • Elasticsearch\SearchRules\ArticleRule.php

  • ##Elasticsearch\SearchRules\ArticleRule.php

設定model  Mapping 及擷取欄位
<?php
namespace App\Elasticsearch\SearchRules;use ScoutElastic\SearchRule;class ArticleRule extends SearchRule{
  /*
   * @inheritdoc
   */
  public function buildHighlightPayload()
  {
      return [
          &#39;fields&#39; => [
              'title' => [
                  'type' => 'unified',
              ],
              'content' => [
                  'type' => 'unified',
              ],
          ]
      ];
  }

  //进行 match 搜索,会分词
  public function buildQueryPayload()
  {
      $query = $this->builder->query;
      return [
          'must' => [
              'query_string' => [
                  'query' => $query,
              ],
          ],
      ];
  }}

    使用步驟
  • 產生elatic Template 類似mysql 表格結構
  • class Article extends Model{
        protected $indexConfigurator = ArticleIndexConfigurator::class;
        use Searchable;
    
        /**
         * 检索规则
         * @var string[]
         */
        protected $searchRules = [
            ArticleRule::class
        ];
    
        // 设置模型字段的映射关系
        protected $mapping = [
            'properties' => [
                'id' => [
                    'type' => 'integer',
                ],
                'title' => [
                    'type' => 'text',
                    'analyzer' => 'ik_max_word',
                    'search_analyzer' => 'ik_max_word',
                    'index_options' => 'offsets',
                    'store' => true
                ],
                'content' => [
                    'type' => 'text',
                    'analyzer' => 'ik_max_word',
                    'search_analyzer' => 'ik_max_word',
                    'index_options' => 'offsets',
                    'store' => true
                ],
                'number' => [
                    'type' => 'integer',
                ],
            ],
        ];
    
        /**
         * 设置 es 检索返回的字段
         * [@return](https://learnku.com/users/31554) array
         */
        public function toSearchableArray() {
            return [
                'id' => $this->id,
                'title' => $this->title,
                'content' => $this->content,
            ];
        }}

  • 更新elatic 類型對應
  • #
    php artisan es:init

  • 資料庫資料導入elatic
  • php artisan elastic:update-mapping "App\Models\Article"

  • PS:其他指令
  • 清除elatic 資料
php artisan scout:import "App\Models\Article"

使用檢索
php artisan scout:flush "App\Models\Article"

###其他使用請自行檢視文件###

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