本文将介绍在springboot中整合elasticsearch。

1、前提约束

• 完成elasticsearch中的分词、停词以及扩展词库配置
  https://www.jianshu.com/p/2d80cea58018

  2、操作步骤

• 创建一个springboot项目
  https://www.jianshu.com/p/de979f53ad80
• 加入以下依赖

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-elasticsearch</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/commons-beanutils/commons-beanutils -->
        <dependency>
            <groupId>commons-beanutils</groupId>
            <artifactId>commons-beanutils</artifactId>
            <version>1.9.3</version>
        </dependency>

• 在主启动类同级目录下创建ElasticSearchConfig.java

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

@Configuration
public class ElasticSearchConfig {

    @Bean
    public RestHighLevelClient getRestHighLevelClient() {
        String[] ips = {"localhost:9200"};
        HttpHost[] httpHosts = new HttpHost[ips.length];
        for (int i = 0; i < ips.length; i++) {
            httpHosts[i] = HttpHost.create(ips[i]);
        }
        RestClientBuilder builder = RestClient.builder(httpHosts);
        return new RestHighLevelClient(builder);
    }
}

• 在主启动类同级目录下创建ElasticSearchController.java

import org.apache.commons.beanutils.BeanUtils;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.client.RestHighLevelClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import java.util.Map;

@RestController
public class ElasticSearchController{


    @Resource
    RestHighLevelClient restHighLevelClient;

    @GetMapping("/adddoc")
    public void insertDoc(String id, String name, String desc) throws Exception {
        Student student = new Student("xiaoli", "xiaoli is a cute kid");
        Map map = BeanUtils.describe(student);
        IndexRequest request = new IndexRequest("test", "doc", id);
        request.source(map);
        restHighLevelClient.index(request);
    }
}

class Student {
    private String name;
    private String desc;

    public Student(String name, String desc) {
        this.name = name;
        this.desc = desc;
    }

    public Student() {
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getDesc() {
        return desc;
    }

    public void setDesc(String desc) {
        this.desc = desc;
    }

    @Override
    public String toString() {
        return "Student{" +
                "name='" + name + '\'' +
                ", desc='" + desc + '\'' +
                '}';
    }
}

• 启动主启动类，测试
  在浏览器中输入http://localhost:8080/adddoc，我们便能看到在es中加入了新文档。
  以上就是springboot与elasticsearch整合的过程。

05 springboot与elasticsearch的整合

原文：https://www.cnblogs.com/alichengxuyuan/p/12513406.html