SpringBoot集成ES实战

SpringBoot 集成 ES 实战（仅代码，用作以后参考）

Myconfig.java 配置类

package org.sophia.elasticsearchlearn;

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

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

@Configuration
public class MyConfig {

    /**
     * es的构造
     * @return
     * @throws UnknownHostException
     */
    @Bean
    public TransportClient client() throws UnknownHostException {

        InetSocketTransportAddress node = new InetSocketTransportAddress(
                InetAddress.getByName("localhost"),
                9300
        );

        Settings settings = Settings.builder()
                .put("cluster.name", "wali")
                .build();

        TransportClient client = new PreBuiltTransportClient(settings);
        client.addTransportAddress(node);
        return client;
    }
}

Application.java 增删改查操作类

package org.sophia.elasticsearchlearn;

import org.elasticsearch.action.delete.DeleteResponse;
import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.action.search.SearchRequestBuilder;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.action.search.SearchType;
import org.elasticsearch.action.update.UpdateRequest;
import org.elasticsearch.action.update.UpdateResponse;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.index.query.BoolQueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.index.query.RangeQueryBuilder;
import org.elasticsearch.search.SearchHit;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.format.annotation.DateTimeFormat;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ExecutionException;

@SpringBootApplication
@RestController
public class Application {

    @Autowired
    private TransportClient client;

    @GetMapping("/")
    public String index(){
        return "index";
    }

    /**
     * 根据ID查询
     * @param id
     * @return
     */
    @GetMapping("/get/people/man")
    @ResponseBody
    public ResponseEntity get(@RequestParam(name = "id", defaultValue = "") String id){

        if(id.isEmpty()){
            return new ResponseEntity(HttpStatus.NOT_FOUND);
        }

        //prepareGet预执行
        GetResponse result = this.client.prepareGet("people", "man", id).get();

        if(! result.isExists()){
            return new ResponseEntity(HttpStatus.NOT_FOUND);
        }

        return new ResponseEntity(result.getSource(), HttpStatus.OK);

    }

    /**
     * 增加
     * @param name
     * @param age
     * @param date
     * @param country
     * @return
     */
    @PostMapping("/add/people/man")
    @ResponseBody
    public ResponseEntity add(
            @RequestParam(name = "name") String name,
            @RequestParam(name = "age") int age,
            @RequestParam(name = "date") @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss") Date date,
            @RequestParam(name = "country") String country
    ){
        try {
            XContentBuilder content = XContentFactory.jsonBuilder()
                    .startObject()
                    .field("name", name)
                    .field("age", age)
                    .field("date", date.getTime())
                    .field("country", country)
                    .endObject();
            // prepareIndex构建索引
            IndexResponse result = this.client.prepareIndex("people", "man")
                    .setSource(content)
                    .get();
            return new ResponseEntity(result.getId(), HttpStatus.OK);
        } catch (IOException e) {
            e.printStackTrace();
            return new ResponseEntity(HttpStatus.INTERNAL_SERVER_ERROR);
        }

    }

    /**
     * 根据ID删除
     * @param id
     * @return
     */
    @DeleteMapping("/del/people/man")
    @ResponseBody
    public ResponseEntity del(@RequestParam(name = "id") String id){
        DeleteResponse result = this.client.prepareDelete("people", "man", id).get();
        return new ResponseEntity(result.getResult().toString(), HttpStatus.OK);

    }

    /**
     * 根据ID更新
     * @param id
     * @param name
     * @param age
     * @param date
     * @param country
     * @return
     */
    @PutMapping("/update/people/man")
    @ResponseBody
    public ResponseEntity update(@RequestParam(name = "id") String id,
            @RequestParam(name = "name", required = false) String name,
            @RequestParam(name = "age", required = false) Integer age,
            @RequestParam(name = "date", required = false) @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss") Date date,
            @RequestParam(name = "country", required = false) String country){
        UpdateRequest update = new UpdateRequest("people", "man", id);
        try {
            XContentBuilder content = XContentFactory.jsonBuilder()
                    .startObject();
            if(null != name){
                content.field("name", name);
            }
            if(null != age){
                content.field("age", age);
            }
            if(null != date){
                content.field("date", date);
            }
            if(null != country){
                content.field("country", country);
            }
            content.endObject();
            update.doc(content);


        } catch (IOException e) {
            e.printStackTrace();
            return new ResponseEntity(HttpStatus.INTERNAL_SERVER_ERROR);
        }

        try {
            UpdateResponse result = this.client.update(update).get();
            return new ResponseEntity(result.getResult().toString(), HttpStatus.OK);
        } catch (InterruptedException e) {
            e.printStackTrace();
            return new ResponseEntity(HttpStatus.INTERNAL_SERVER_ERROR);
        } catch (ExecutionException e) {
            e.printStackTrace();
            return new ResponseEntity(HttpStatus.INTERNAL_SERVER_ERROR);
        }

    }

    /**
     * 复合条件查询
     * @param name
     * @param minAge
     * @param maxAge
     * @return
     */
    @PostMapping("/query/people/man")
    @ResponseBody
    public ResponseEntity query(
            @RequestParam(name = "name", required = false) String name,
            @RequestParam(name = "gt_age", defaultValue = "0") Integer minAge,
            @RequestParam(name = "lt_age", required = false) Integer maxAge

    ){
        BoolQueryBuilder boolQuery = QueryBuilders.boolQuery();
        if(null != name){
            boolQuery.must(QueryBuilders.matchQuery("name", name));

        }

        RangeQueryBuilder rangeQuery = QueryBuilders.rangeQuery("age")
                .from(minAge);

        if(null != maxAge && 0 < maxAge){
            rangeQuery.to(maxAge);
        }

        boolQuery.filter(rangeQuery);

        SearchRequestBuilder builder = this.client.prepareSearch("people")
                .setTypes("man")
                .setSearchType(SearchType.DFS_QUERY_THEN_FETCH)
                .setQuery(boolQuery)
                .setFrom(0)
                .setSize(10);

//        System.out.println(builder);
        SearchResponse response = builder.get();
        List<Map<String, Object>> result = new ArrayList<Map<String, Object>>();
        for(SearchHit hit : response.getHits()){
            result.add(hit.getSource());
        }
        return new ResponseEntity(result, HttpStatus.OK);
    }

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

pom.xml maven配置

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>

	<groupId>org.sophia</groupId>
	<artifactId>elasticsearchlearn</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>elasticsearchlearn</name>
	<description>Demo project for Spring Boot</description>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.0.1.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>

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

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

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

        <dependency>
            <groupId>org.elasticsearch.client</groupId>
            <artifactId>transport</artifactId>
            <version>5.5.2</version>
        </dependency>

        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
            <version>2.11.0</version>
        </dependency>
	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>
</project>

代码源于慕课网的《ElasticSearch入门》课程，纯手打，用作以后参考

原文链接：https://blog.csdn.net/m0_37738114/article/details/80040666