SpringBoot——ElasticSearch入门和初步实战

• ElasticSearch基础知识和启动

link

• SpringCloud——ElasticSearch实战

1. 1 首先要启动ElasticSearch 进入bin文件cmd——>elasticsearch

1. 2 pom.xml

<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>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.6</version>
		</dependency>

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

		<dependency>
			<groupId>com.google.code.gson</groupId>
			<artifactId>gson</artifactId>
			<version>2.8.0</version>
		</dependency>
	</dependencies>

1. 3 实体类

@Document(indexName = "testgoods", type = "goods")
//indexName索引名称 可以理解为数据库名 必须为小写 不然会报org.elasticsearch.indices.InvalidIndexNameException异常
//type类型 可以理解为表名
public class GoodsInfo implements Serializable {
    private Long id;
    private String name;
    private String description;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

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

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public GoodsInfo(Long id, String name, String description) {
        this.id = id;
        this.name = name;
        this.description = description;
    }

    public GoodsInfo() {
    }
}

1. 4 dao

import com.example.elk.pojo.GoodsInfo;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
import org.springframework.stereotype.Component;

@Component
public interface GoodsRepository extends ElasticsearchRepository<GoodsInfo, Long> {
}

1. 5 ctrl

import com.example.elk.dao.GoodsRepository;
import com.example.elk.pojo.GoodsInfo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;


@RestController
public class GoodsController {

    @Autowired
    private GoodsRepository goodsRepository;

    //http://localhost:8888/save
    @GetMapping("save")
    public String save() {
        Long goodId = System.currentTimeMillis();
        GoodsInfo goodsInfo = new GoodsInfo(goodId,
                "商品" + System.currentTimeMillis(), "这是一个测试商品");
        goodsRepository.save(goodsInfo);
        return "" + goodId;
    }

    //http://localhost:8888/delete?id=1525415333329
    @GetMapping("delete")
    public String delete(long id) {
        goodsRepository.deleteById(id);
        return "success";
    }

    //http://localhost:8888/update?id=1525417362754&name=修改&description=修改
    @GetMapping("update")
    public String update(long id, String name, String description) {
        GoodsInfo goodsInfo = new GoodsInfo(id,
                name, description);
        goodsRepository.save(goodsInfo);
        return "success";
    }

    //http://localhost:8888/getOne?id=1525417362754
    @GetMapping("getOne")
    public GoodsInfo getOne(long id) {
        GoodsInfo goodsInfo = goodsRepository.findById(id).get();
        return goodsInfo;
    }

}

1. 6 application.properties或application.yml

spring.data.elasticsearch.repositories.enabled = true
spring.data.elasticsearch.cluster-nodes =127.0.0.1:9300

1. 7 如果你已经开启了kibana（cmd——>kibana）则利用语法： GET /index/type/id    或者直接利用接口