目录
前言
本文讲述rabbitmq高级特性confirm和return
提示：以下是本篇文章正文内容，下面案例可供参考
一、原理说明
二、创建maven项目并且引入依赖
1.引入rabbitmq和spring内容库
代码如下（示例）：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.zy</groupId>
<artifactId>rabbitmq-consumer-confirm-spring</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.3.3</version>
</dependency>
<dependency>
<groupId>org.springframework.amqp</groupId>
<artifactId>spring-rabbit</artifactId>
<version>2.3.4</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.3.3</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
2.创建rabbitmq.properties和rabbitmq-producer-confirm-spring.xml两个配置文件
rabbitmq.properties配置文件：
rabbitmq.host=127.0.0.1 //rabbitmq-server主机地址
rabbitmq.port=5672 //rabbitmq-server端口
rabbitmq.username=zysf01 //用户名
rabbitmq.password=zysf01 //密码
rabbitmq.virtual-host=/zysf //虚拟机
producer-confirm-spring.xml配置文件：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:rabbit="http://www.springframework.org/schema/rabbit"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/rabbit
http://www.springframework.org/schema/rabbit/spring-rabbit.xsd">
<!--加载配置文件-->
<context:property-placeholder location="classpath:rabbitmq.properties"/>
<!-- 定义rabbitmq connectionFactory -->
<rabbit:connection-factory id="connectionFactory" host="${rabbitmq.host}"
port="${rabbitmq.port}"
username="${rabbitmq.username}"
password="${rabbitmq.password}"
virtual-host="${rabbitmq.virtual-host}"
confirm-type="CORRELATED"
/>
<!--定义管理交换机、队列-->
<rabbit:admin connection-factory="connectionFactory"/>
<!--定义rabbitTemplate对象操作可以在代码中方便发送消息-->
<rabbit:template id="rabbitTemplate" connection-factory="connectionFactory"/>
<!--消息的可靠性投递（生产端）-->
<rabbit:queue id="test_queue_confirm" name="test_queue_confirm"></rabbit:queue>
<rabbit:direct-exchange name="test_exchange_confirm">
<rabbit:bindings>
<rabbit:binding queue="test_queue_confirm" key="confirm"></rabbit:binding>
</rabbit:bindings>
</rabbit:direct-exchange>
</beans>
1.接下来我们需要在配置文件rabbitmq-producer-confirm-spring.xml中激活confirm功能，在rabbit:connection-factory标签中添加confirm-type=“CORRELATED”，老版本添加publisher-confirms=“true”
2.给rabbitTemplate设置回调函数，并实现confirm方法
@Test
public void testConfirm() {
rabbitTemplate.setConfirmCallback(new RabbitTemplate.ConfirmCallback() {
//confirm(CorrelationData correlationData, 发送消息时可以设置配置信息，这里就是那个信息
// boolean b, ack代表是否成功收到消息
// String s) cause代表失败的原因
@Override
public void confirm(CorrelationData correlationData, boolean b, String s) {
System.out.println("confirm方法被执行了...");
}
});
//发送消息
rabbitTemplate.convertAndSend("test_exchange_confirm","confirm","message confirm...");
}
总结
提示：
1.创建maven项目
2.在rabbitmq.properties配置文件中配置rabbitmq-server服务链接参数
3.在rabbitmq-producer-confirm-spring.xml配置文件中配置exchange和queue
4.接下来我们需要在配置文件rabbitmq-producer-confirm-spring.xml中激活confirm功能，在rabbit:connection-factory标签中添加confirm-type=“CORRELATED”，老版本添加publisher-confirms=“true”
5.给rabbitTemplate设置回调函数，并实现confirm方法
6.注意测试时需要引入rabbitmq-producer-confirm-spring.xml配置文件
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:rabbitmq-producer-confirm-spring.xml")
public class ConfirmTest {
@Autowired
private RabbitTemplate rabbitTemplate;
/**
* 确认模式：
* 1.确认模式开启：ConnectionFactory中开启publisher-confirms="true"|新版本中ConnectionFactory中开启confirm-type="CORRELATED"
* 2.在rabbitTemplate中定义回调函数
*
*/
@Test
public void testConfirm() {
rabbitTemplate.setConfirmCallback(new RabbitTemplate.ConfirmCallback() {
//confirm(CorrelationData correlationData, 发送消息时可以设置配置信息，这里就是那个信息
// boolean b, ack代表是否成功收到消息
// String s) cause代表失败的原因
@Override
public void confirm(CorrelationData correlationData, boolean b, String s) {
System.out.println("confirm方法被执行了...");
}
});
//发送消息
rabbitTemplate.convertAndSend("test_exchange_confirm","confirm","message confirm...");
}
}