超级简单实现搭建elasticsearch API

首先澄清环境

jdk1.8

elasticsearch 5.5.3

idea  2018

创建时间 2019/1/5

前提：要保证es是可以正常使用的 在kibana或者head中正常查询 

elk 安装请转到  https://mp.csdn.net/postedit/85798493

上图  目录结构图

1.pom文件

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.ebuy.cloud</groupId>
    <artifactId>service-elasticsearch</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>service-elasticsearch</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>

        <elasticsearch.version>5.5.3</elasticsearch.version>
        <log4j2.version>2.6.2</log4j2.version>
        <fastjson.version>1.2.31</fastjson.version>
        <commons.lang3.version>3.4</commons.lang3.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.elasticsearch</groupId>
            <artifactId>elasticsearch</artifactId>
            <version>${elasticsearch.version}</version>
        </dependency>
        <dependency>
            <groupId>org.elasticsearch.client</groupId>
            <artifactId>transport</artifactId>
            <version>${elasticsearch.version}</version>
        </dependency>
        <!--fastJSON-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>${fastjson.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <optional>true</optional>
        </dependency>

    </dependencies>

2.客户端类

/**
 * 〈一句话功能简述〉<br>
 * 〈客户端类〉
 *
 * @author Administrator
 * @create 2019/1/2 0002
 */
package com.ebuy.cloud.serviceelasticsearch.config;


import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.InetSocketTransportAddress;
import org.elasticsearch.transport.client.PreBuiltTransportClient;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.net.InetAddress;
import java.net.UnknownHostException;

/**
 * 〈一句话功能简述〉<br>
 * 〈客户端类〉
 *
 * @author geyf
 * @create 2019/1/2 0002
 */
@Configuration
public class TransportClient {

    private static Logger logger = LoggerFactory.getLogger(TransportClient.class);
    @Bean
    public PreBuiltTransportClient client()throws UnknownHostException {
// 这里调用的是tcp端口默认为9300 一般未修改   9200为http端口无法使用
        InetSocketTransportAddress node=new InetSocketTransportAddress(InetAddress.getByName("192.168.71.146"),9300);
        // 修改es 集群名称对应配置文件中的cluster.name
        Settings settings= Settings.builder().put("cluster.name","ebuy").build();
        PreBuiltTransportClient client=new PreBuiltTransportClient(settings);
        client.addTransportAddress(node);
        return client;
    }

}

3.controller

/**
 * 〈一句话功能简述〉<br>
 * 〈查询服务〉
 *
 * @author Administrator
 * @create 2019/1/2 0002
 */
package com.ebuy.cloud.serviceelasticsearch.controller;

import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.action.get.GetResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

/**
 * 〈查询服务〉
 * @author Administrator
 * @create 2019/1/2 0002
 */
@RestController
public class SearchRestController {
    @Autowired
    private TransportClient client;

    @GetMapping("/index")
    public String index(){return  "index";}
    @GetMapping("/get/product/id")
    @ResponseBody
    public ResponseEntity get (@RequestParam(name="id") String id){
        if(id.isEmpty()) {
            return new ResponseEntity(HttpStatus.FAILED_DEPENDENCY);
        }
        // product 为index名称 job为type名称   传入id值
        GetResponse response=this.client.prepareGet("product","job",id).get();
        if(!response.isExists()) {
            return new ResponseEntity(HttpStatus.NOT_FOUND);
        }
        return new ResponseEntity(response.getSource(),HttpStatus.OK);
    }
}

4.application.properties

# Elasticsearch
elasticsearch.cluster.name=ebuy
#elasticsearch.ip=192.168.71.146
#elasticsearch.port=9200
elasticsearch.pool=5
server.port=8081

5.启动类

package com.ebuy.cloud.serviceelasticsearch;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class ServiceElasticsearchApplication {
    private static Logger logger = LoggerFactory.getLogger(ServiceElasticsearchApplication.class);
    public static void main(String[] args) {
        SpringApplication.run(ServiceElasticsearchApplication.class, args);
        logger.info("=============== Elasticsearch 启动成功 ==============");
    }
}

com.ebuy.cloud.serviceelasticsearch.constants.HttpStatusEnum

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com.ebuy.cloud.serviceelasticsearch.constants.ResponseVo

为两个工具类可以根据自己实际情况进行编写 无关紧要

启动项目 便可执行成功