详解Laravel8 ES封装及其使用方法

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详解Laravel8 ES封装及其使用方法

【相关推荐:laravel视频教程】

composer 安装

composer require elasticsearch/elasticsearch

ES 封装

<?php
namespace App\Es;
use Elasticsearch\ClientBuilder;
class MyEs
{
    //ES客户端链接
    private $client;
    /**
     * 构造函数
     * MyElasticsearch constructor.
     */
    public function __construct()
    {
        $this->client = ClientBuilder::create()->setHosts([&#39;127.0.0.1:9200&#39;])->build();
    }
    /**
     * 判断索引是否存在
     * @param string $index_name
     * @return bool|mixed|string
     */
    public function exists_index($index_name = &#39;test_ik&#39;)
    {
        $params = [
            &#39;index&#39; => $index_name
        ];
        try {
            return $this->client->indices()->exists($params);
        } catch (\Elasticsearch\Common\Exceptions\BadRequest400Exception $e) {
            $msg = $e->getMessage();
            $msg = json_decode($msg,true);
            return $msg;
        }
    }
    /**
     * 创建索引
     * @param string $index_name
     * @return array|mixed|string
     */
    public function create_index($index_name = &#39;test_ik&#39;) { // 只能创建一次
        $params = [
            &#39;index&#39; => $index_name,
            &#39;body&#39; => [
                &#39;settings&#39; => [
                    &#39;number_of_shards&#39; => 5,
                    &#39;number_of_replicas&#39; => 1
                ]
            ]
        ];
        try {
            return $this->client->indices()->create($params);
        } catch (\Elasticsearch\Common\Exceptions\BadRequest400Exception $e) {
            $msg = $e->getMessage();
            $msg = json_decode($msg,true);
            return $msg;
        }
    }
    /**
     * 删除索引
     * @param string $index_name
     * @return array
     */
    public function delete_index($index_name = &#39;test_ik&#39;) {
        $params = [&#39;index&#39; => $index_name];
        $response = $this->client->indices()->delete($params);
        return $response;
    }
    /**
     * 添加文档
     * @param $id
     * @param $doc [&#39;id&#39;=>100, &#39;title&#39;=>&#39;phone&#39;]
     * @param string $index_name
     * @param string $type_name
     * @return array
     */
    public function add_doc($id,$doc,$index_name = &#39;test_ik&#39;,$type_name = &#39;goods&#39;) {
        $params = [
            &#39;index&#39; => $index_name,
            &#39;type&#39; => $type_name,
            &#39;id&#39; => $id,
            &#39;body&#39; => $doc
        ];
        $response = $this->client->index($params);
        return $response;
    }
    /**
     * 判断文档存在
     * @param int $id
     * @param string $index_name
     * @param string $type_name
     * @return array|bool
     */
    public function exists_doc($id = 1,$index_name = &#39;test_ik&#39;,$type_name = &#39;goods&#39;) {
        $params = [
            &#39;index&#39; => $index_name,
            &#39;type&#39; => $type_name,
            &#39;id&#39; => $id
        ];
        $response = $this->client->exists($params);
        return $response;
    }
    /**
     * 获取文档
     * @param int $id
     * @param string $index_name
     * @param string $type_name
     * @return array
     */
    public function get_doc($id = 1,$index_name = &#39;test_ik&#39;,$type_name = &#39;goods&#39;) {
        $params = [
            &#39;index&#39; => $index_name,
            &#39;type&#39; => $type_name,
            &#39;id&#39; => $id
        ];
        $response = $this->client->get($params);
        return $response;
    }
    /**
     * 更新文档
     * @param int $id
     * @param string $index_name
     * @param string $type_name
     * @param array $body [&#39;doc&#39; => [&#39;title&#39; => &#39;苹果手机iPhoneX&#39;]]
     * @return array
     */
    public function update_doc($id = 1,$index_name = &#39;test_ik&#39;,$type_name = &#39;goods&#39;, $body=[]) {
        // 可以灵活添加新字段,最好不要乱添加
        $params = [
            &#39;index&#39; => $index_name,
            &#39;type&#39; => $type_name,
            &#39;id&#39; => $id,
            &#39;body&#39; => $body
        ];
        $response = $this->client->update($params);
        return $response;
    }
    /**
     * 删除文档
     * @param int $id
     * @param string $index_name
     * @param string $type_name
     * @return array
     */
    public function delete_doc($id = 1,$index_name = &#39;test_ik&#39;,$type_name = &#39;goods&#39;) {
        $params = [
            &#39;index&#39; => $index_name,
            &#39;type&#39; => $type_name,
            &#39;id&#39; => $id
        ];
        $response = $this->client->delete($params);
        return $response;
    }
    /**
     * 搜索文档 (分页,排序,权重,过滤)
     * @param string $index_name
     * @param string $type_name
     * @param array $body
     * $body = [
                &#39;query&#39; => [
                    &#39;match&#39; => [
                        &#39;fang_name&#39; => [
                            &#39;query&#39; => $fangName
                        ]
                    ]
                ],
                &#39;highlight&#39;=>[
                    &#39;fields&#39;=>[
                        &#39;fang_name&#39;=>[
                            &#39;pre_tags&#39;=>[
                                &#39;<span style="color: red">&#39;
                            ],
                            &#39;post_tags&#39;=>[
                                &#39;</span>&#39;
                            ]
                        ]
                    ]
                ]
            ];
     * @return array
     */
    public function search_doc($index_name = "test_ik",$type_name = "goods",$body=[]) {
        $params = [
            &#39;index&#39; => $index_name,
            &#39;type&#39; => $type_name,
            &#39;body&#39; => $body
        ];
        $results = $this->client->search($params);
        return $results;
    }
}

将数据表中所有数据添加至 ES

public function esAdd()
    {
        $data = Good::get()->toArray();
        $es = new MyEs();
        if (!$es->exists_index(&#39;goods&#39;)) {
            //创建es索引,es的索引相当于MySQL的数据库
            $es->create_index(&#39;goods&#39;);
        }
        foreach ($data as $model) {
            $es->add_doc($model[&#39;id&#39;], $model, &#39;goods&#39;, &#39;_doc&#39;);
        }
    }

每在 MySQL 里添加一条数据,在 es 里也添加一条

直接将代码补在 MySQL 添加入库的逻辑方法里即可

        //添加至MySQL
        $res=Good::insertGetId($arr);
        $es = new MyEs();
        if (!$es->exists_index(&#39;goods&#39;)) {
            $es->create_index(&#39;goods&#39;);
        }
        //添加至es
        $es->add_doc($res, $arr, &#39;goods&#39;, &#39;_doc&#39;);
        return $res;

进行 MySQL 数据修改时,也更新 es 的数据

直接将代码补在 MySQL 修改数据的逻辑方法里即可

      //修改MySQL的数据
        $res=Good::where(&#39;id&#39;,$id)->update($arr);
        $es = new MyEs();
        if (!$es->exists_index(&#39;goods&#39;)) {
            $es->create_index(&#39;goods&#39;);
        }
        //修改es的数据
        $es->update_doc($id, &#39;goods&#39;, &#39;_doc&#39;,[&#39;doc&#39;=>$arr]);
        return $res;

通过 ES 实现搜索功能

public function search()
    {
        //获取搜索值
        $search = \request()->get(&#39;search&#39;);
        if (!empty($search)) {
            $es = new MyEs();
            $body = [
                &#39;query&#39; => [
                    &#39;match&#39; => [
                        &#39;title&#39; => [
                            &#39;query&#39; => $search
                        ]
                    ]
                ],
                &#39;highlight&#39;=>[
                    &#39;fields&#39;=>[
                        &#39;title&#39;=>[
                            &#39;pre_tags&#39;=>[
                                &#39;<span style="color: red">&#39;
                            ],
                            &#39;post_tags&#39;=>[
                                &#39;</span>&#39;
                            ]
                        ]
                    ]
                ]
            ];
            $res = $es->search_doc(&#39;goods&#39;, &#39;_doc&#39;, $body);
            $data = array_column($res[&#39;hits&#39;][&#39;hits&#39;], &#39;_source&#39;);
            foreach ($data as $key=>&$v){
                 $v[&#39;title&#39;] = $res[&#39;hits&#39;][&#39;hits&#39;][$key][&#39;highlight&#39;][&#39;title&#39;][0];
            }
            unset($v);
            return $data;
        }
        $data = Good::get();
        return $data;
    }

另,补充 es 分页搜索

如果是在微信小程序中使用的话,运用上拉触底事件即可

此功能是在上面搜索功能之上添加代码实现的

1. 接收前台小程序传递来的当前页

2. 调用 es 封装类的搜索方法时,多传两个参数

3. 在 es 封装类的搜索方法中增加两个形参

搜索后搜索值高亮显示

如果是在微信小程序中使用的话,是直接将标签和值一起输出到页面的,加入解析富文本的标签可以将标签转化格式,达到高亮效果

<rich-text nodes="{{item.title}}"></rich-text>

原文作者:amateur

转自链接:https://learnku.com/articles/66177

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