在Spring Boot 2中集成MyBatis和RabbitMQ消息队列,你需要完成以下几个步骤:
在你的pom.xml
文件中添加以下依赖:
<!-- Spring Boot Starter Web -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- Spring Boot Starter MyBatis -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mybatis</artifactId>
</dependency>
<!-- Spring Boot Starter RabbitMQ -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-amqp</artifactId>
</dependency>
在application.yml
或application.properties
文件中配置RabbitMQ连接信息:
spring:
rabbitmq:
host: localhost
port: 5672
username: guest
password: guest
virtual-host: /
创建一个配置类,用于初始化RabbitMQ的连接工厂和消息模板:
@Configuration
public class RabbitMQConfig {
@Bean
public ConnectionFactory connectionFactory() {
CachingConnectionFactory connectionFactory = new CachingConnectionFactory();
connectionFactory.setHost("localhost");
connectionFactory.setPort(5672);
connectionFactory.setUsername("guest");
connectionFactory.setPassword("guest");
connectionFactory.setVirtualHost("/");
return connectionFactory;
}
@Bean
public RabbitTemplate rabbitTemplate() {
return new RabbitTemplate(connectionFactory());
}
}
创建一个配置类,用于初始化MyBatis的SqlSessionFactory和Mapper扫描器:
@Configuration
@MapperScan("com.example.demo.mapper")
public class MyBatisConfig {
@Bean
public SqlSessionFactory sqlSessionFactory(DataSource dataSource) throws Exception {
SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
factoryBean.setDataSource(dataSource);
return factoryBean.getObject();
}
}
创建一个生产者类,用于发送消息到RabbitMQ队列:
@Service
public class MessageProducer {
@Autowired
private RabbitTemplate rabbitTemplate;
public void sendMessage(String exchange, String routingKey, Object message) {
rabbitTemplate.convertAndSend(exchange, routingKey, message);
}
}
创建一个消费者类,用于从RabbitMQ队列接收消息并处理:
@Service
public class MessageConsumer {
@RabbitListener(queues = "myQueue")
public void receiveMessage(String message) {
System.out.println("Received message: " + message);
// 处理消息的逻辑
}
}
创建一个Mapper接口,用于定义数据库操作方法:
public interface UserMapper {
User getUserById(Long id);
}
创建一个映射文件UserMapper.xml
,用于定义SQL语句和映射关系:
<?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.mapper.UserMapper">
<select id="getUserById" resultType="com.example.demo.entity.User">
SELECT * FROM user WHERE id = #{id}
</select>
</mapper>
创建一个实体类User
,用于映射数据库表:
public class User {
private Long id;
private String name;
private Integer age;
// 省略getter和setter方法
}
现在你已经成功地在Spring Boot 2中集成了MyBatis和RabbitMQ消息队列。你可以根据实际需求进行相应的调整和扩展。
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