day75-ElasticSearch-整合-SpringBoot整合high-level-client

1.API选择 - high-level-client

high-level-client是对low-level-client进行了封装就如mybatis与jdbc的关系

2.创建search模块

使用 spring initializer创建maven 模块

因为默认创建出来后父版本会是最新的版本

将父版本改为之前其他模块版本一致

看到父版本的依赖是6.8.6版本，复制过来并改为7.4.2版本

3.引入common依赖

添加注册服务的相关配置

4.引入依赖并做相关测试

这些在官网里都有https://www.elastic.co/guide/en/elasticsearch/client/java-rest/current/index.html 都在getting started内

<dependency>
    <groupId>org.elasticsearch.client</groupId>
    <artifactId>elasticsearch-rest-high-level-client</artifactId>
    <version>7.10.1</version>
</dependency>

创建配置类并注册实例

package com.atguigu.gulimall.search.config;

import org.apache.http.HttpHost;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * @author rengang
 * @version 1.0
 * @date 2020/12/21 10:58
 */
@Configuration
public class ElasticConfiguration {

    @Bean
    public RestHighLevelClient esRestClient(){
        RestHighLevelClient client = new RestHighLevelClient(
                RestClient.builder(
                        new HttpHost("192.168.56.10", 9200, "http")
                        ));
        return client;
    }

}

在测试类中测试

package com.atguigu.gulimall.search;


import org.elasticsearch.client.RestHighLevelClient;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest
public class GulimallSearchApplicationTests {

    @Autowired
    private RestHighLevelClient client;

    @Test
    public  void contextLoads() {
        System.out.println("client:"+client );
    }

}