elastaicsearch简单入门项目

application.yml

spring:
  elasticsearch:
      host: 目标服务器 #本机就localhost，远程则写公网地址，注意开放端口，下同，例如127.0.0.1
      port: 9300
      cluster-name: my-application
      rest:
        uris: http://目标服务器:9200 

controller

package com.ruoyi.web.controller.elasticsearchTest.controller;


import com.ruoyi.web.controller.elasticsearchTest.domain.Student;
import com.ruoyi.web.controller.elasticsearchTest.service.StudentImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.elasticsearch.core.ElasticsearchRestTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@RequestMapping("/student")
public class StudentController {
    @Autowired
    private ElasticsearchRestTemplate elasticsearchRestTemplate;
    @Autowired
    private StudentImpl studentImpl;

    @PostMapping("/batchAdd")
    @ResponseBody
    public  void add(@RequestBody List<Student>students){
        System.out.println(students);
        studentImpl.saveAll(students);
    }
    @PostMapping("/add")
    public void add(@RequestBody Student student){
        studentImpl.save(student);
    }

    @PostMapping("/search/name")
    public Object searchName(String keyword){
        List<Student> students = studentImpl.findByNameLike(keyword);
        return students;
    }
}

ESConfig

package com.ruoyi.web.controller.elasticsearchTest.config;

import com.ruoyi.common.utils.StringUtils;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.TransportAddress;
import org.elasticsearch.transport.client.PreBuiltTransportClient;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

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

@Configuration
public class ESConfig {

    @Value("${spring.elasticsearch.host}")
    private String host;

    private int port;
    @Value("${spring.elasticsearch.port}")
    private void setPort(String str){
        if(StringUtils.isNotBlank(str)){
            port = Integer.valueOf(str);
        }
    }
    @Value("${spring.elasticsearch.cluster-name}")
    private String clusterName;

    @Bean
    public TransportClient client() throws UnknownHostException {

        //es集群连接
        TransportAddress node = new TransportAddress(
                InetAddress.getByName(host),
                port
        );

        //es集群配置（自定义配置） 连接自己安装的集群名称
        Settings settings = Settings.builder()
                .put("cluster.name", clusterName)
                .build();

        PreBuiltTransportClient client = new PreBuiltTransportClient(settings);

        client.addTransportAddress(node);

        return client;
    }
}

domain

package com.ruoyi.web.controller.elasticsearchTest.domain;


import lombok.Data;
import lombok.experimental.Accessors;
import org.springframework.data.annotation.Id;
import org.springframework.data.elasticsearch.annotations.Document;
import org.springframework.stereotype.Component;

@Component
@Data
@Accessors(chain = true)
@Document(indexName = "student")
public class Student {
    private  static  final  long serialVersionUID = 1L;

    @Id
    private String id;

    private String name;
    private String gender;
    private  Integer age;
}

Impl

package com.ruoyi.web.controller.elasticsearchTest.service;

import com.ruoyi.web.controller.elasticsearchTest.domain.Student;
import org.springframework.data.elasticsearch.annotations.Query;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;

import java.util.List;

@Component
public interface StudentImpl extends ElasticsearchRepository<Student,String> {

    List<Student> findByNameLike(String keyword);

    @Query("{\"match_phrase\":{\"name\":\"?0\"}}")
    List<Student>findByNameCustom(String keyword);
}

[
    {
        "name":"张三",
        "gender":"男",
        "age":24
    },
    {
        "name":"李四",
        "gender":"女",
        "age":22
    },
    {
        "name":"王五",
        "gender":"男",
        "age":33
    }
]

调用接口后

查询接口，查询的是张三的信息。