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在Spring Boot 2中集成MyBatis和Elasticsearch,你需要遵循以下步驟:
在你的pom.xml
文件中添加以下依賴:
<!-- 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
創(chuàng)建一個Java類來表示Elasticsearch中的文檔。例如,我們創(chuàng)建一個User
類:
public class User {
private String id;
private String name;
private Integer age;
// Getters and Setters
}
創(chuàng)建一個接口來擴展ElasticsearchRepository
,以便對Elasticsearch進行操作:
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
目錄下創(chuàng)建一個名為UserMapper.xml
的文件,用于定義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>
創(chuàng)建一個Service類來處理業(yè)務(wù)邏輯:
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();
}
}
創(chuàng)建一個Controller類來處理HTTP請求:
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();
}
}
現(xiàn)在你已經(jīng)成功地在Spring Boot 2中集成了MyBatis和Elasticsearch。你可以運行你的應(yīng)用程序并通過/users
端點訪問Elasticsearch中的數(shù)據(jù)。
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