在Spring Boot 2中集成MyBatis和Elasticsearch,你需要遵循以下步骤:
在你的pom.xml
文件中添加以下依赖:
<!-- Spring Boot Starter Data Elasticsearch -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
</dependency>
<!-- MyBatis Starter -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mybatis</artifactId>
</dependency>
<!-- Elasticsearch Client -->
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>elasticsearch-java</artifactId>
</dependency>
在application.yml
或application.properties
文件中添加Elasticsearch的配置信息:
spring:
elasticsearch:
rest:
uris: http://localhost:9200
创建一个Java类来表示Elasticsearch中的文档。例如,我们创建一个User
类:
public class User {
private String id;
private String name;
private Integer age;
// Getters and Setters
}
创建一个接口来扩展ElasticsearchRepository
,以便对Elasticsearch进行操作:
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
public interface UserRepository extends ElasticsearchRepository<User, String> {
}
在application.yml
或application.properties
文件中添加MyBatis的配置信息:
mybatis:
type-aliases-package: com.example.demo.entity
mapper-locations: classpath:mapper/*.xml
在src/main/resources/mapper
目录下创建一个名为UserMapper.xml
的文件,用于定义SQL映射:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.example.demo.entity.User">
<resultMap id="UserResultMap" type="com.example.demo.entity.User">
<id property="id" column="id"/>
<result property="name" column="name"/>
<result property="age" column="age"/>
</resultMap>
<select id="findAll" resultMap="UserResultMap">
SELECT * FROM user
</select>
</mapper>
创建一个Service类来处理业务逻辑:
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class UserService {
@Autowired
private UserRepository userRepository;
public List<User> findAll() {
return userRepository.findAll();
}
}
创建一个Controller类来处理HTTP请求:
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
@RestController
public class UserController {
@Autowired
private UserService userService;
@GetMapping("/users")
public List<User> findAll() {
return userService.findAll();
}
}
现在你已经成功地在Spring Boot 2中集成了MyBatis和Elasticsearch。你可以运行你的应用程序并通过/users
端点访问Elasticsearch中的数据。
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