springboot整合Elasticsearch
springboot 2.2.5.RELEASE
Elasticsearch 7.17.6
Elasticsearch下载地址https://www.elastic.co/cn/downloads/elasticsearch
还有个大概的对应版本图:

如果要使用IK分词器的话,也有版本对应关系:

先准备好环境,然后开始第一步:
一: 解压Elasticsearch,bin\elasticsearch.bat 启动。
二:pom 添加 Elasticsearch jar,版本让它自己控制,我这里没有指定。
<!-- 整合Elasticsearch --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-elasticsearch</artifactId> </dependency>
三:新建student 实体类(没有装IK分词器的时候,不要指定ik_smart,ik_max_word等等,不然报错。)
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.data.annotation.Id;
import org.springframework.data.elasticsearch.annotations.Document;
import org.springframework.data.elasticsearch.annotations.Field;
import org.springframework.data.elasticsearch.annotations.FieldType;
import java.io.Serializable;
/** elasticsearch demo
* @date 20221123 11:13
*/
@Data
@AllArgsConstructor
@NoArgsConstructor
//indexName名字如果是字母那么必须是小写字母
@Document(indexName = "student")
public class Student implements Serializable {
@Id
@Field(store = true, type = FieldType.Keyword)
private Integer id;
@Field(store = true, type = FieldType.Keyword)
private String name;
@Field(store = true, type = FieldType.Text)
//Text可以分词 ik_smart=粗粒度分词 ik_max_word 为细粒度分词
private String address;
@Field(index = false, store = true, type = FieldType.Integer)
private Integer age;
@Field(index = false, store = true, type = FieldType.Keyword)
private String createTime;
}
第四步:创建接口类 StudentMapper
import ideal4j.pfa.resume.model.Student;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
/**
* @ClassName: StudentMapper
* @Description: elasticsearch demo
* @Date 2022/11/23
* @Version 1.0
*/
public interface StudentMapper extends ElasticsearchRepository<Student, Integer> {
}
第五步:创建action 类
import com.alibaba.fastjson.JSON;
import ideal4j.pfa.resume.mapper.StudentMapper;
import ideal4j.pfa.resume.model.Student;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import java.util.Optional;
/**
* @ClassName: TestAction
* @Description:
* @Date 2022/11/23 13:59
*/
@RestController
public class TestAction {
@Autowired
public StudentMapper studentMapper;
@PostMapping("/elasticsearch/test")
public Student test(@RequestBody Student student) {
return studentMapper.save(student);
}
@GetMapping("/elasticsearch/student")
public Student get(@RequestParam Integer id) {
Optional<Student> student = studentMapper.findById(id);
System.out.println(JSON.toJSONString(student));
return student.get();
}
}
第六步:postman展示测试成果


问题一:Elasticsearch启动控制台乱码,参考:https://www.cnblogs.com/isyysblog/p/16917608.html
问题二:Elasticsearch版本不对应,sava 一直报错,查询也查不到,刚开始用的5.5.3。
问题三:刚开始可以不安装IK分词器,事儿多。
问题四:kibana 如果使用,要下载对应版本,不然用不了。
祝大家工作顺利,生活如意!

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