Spring Boot系列(8)——RabbitMQ确认、退回模式及死信队列

 1 #选择确认类型为交互

 2 spring.rabbitmq.publisher-confirm-type=correlated

 1     @Test
 2     /**
 3      * the test is testing confirm-function in rabbitmq
 4      */
 5     void messageSendTestWithConfirm(){
 6 
 7         /*
 8          * 设置消息确认回调方法；
 9          * @ack 为true时，表示投递成功；为false表示投递失败；
10          * @CorrelationData 为自定义反馈信息；
11          * @cause 为投递失败的原因；
12          */
13         rabbitTemplate.setConfirmCallback(new RabbitTemplate.ConfirmCallback() {
14             @Override
15             public void confirm(CorrelationData correlationData, boolean ack, String cause) {
16                 if(!ack){
17                     logger.error("correlationData："+ correlationData);
18                     logger.error("ack："+ack);
19                     logger.error("cause："+cause);
20                 }
21             }
22         });
23 
24         //消息内容
25         Map<String,String> map = new HashMap<>();
26         map.put("message","testing confire function");
27 
28         //设置自定义反馈消息
29         String uuid = UUID.randomUUID().toString();
30         logger.info("消息唯一ID："+uuid);
31         CorrelationData correlationData = new CorrelationData();
32         correlationData.setId(uuid);
33 
34         //并不存在名为“exchange-dog”的exchange
35         rabbitTemplate.convertAndSend("exchange-dog","dog",map,correlationData);
36 
37     }

1  c.d.amqp.SpringBootAmqpApplicationTests  : 消息唯一ID：e6601e83-fad7-4b53-9968-c74828e62b23
2  o.s.a.r.c.CachingConnectionFactory       : Attempting to connect to: [192.168.22.130:5672]
3  o.s.a.r.c.CachingConnectionFactory       : Created new connection: rabbitConnectionFactory#f7cdf8:0/SimpleConnection@397ef2 [delegate=amqp://guest@192.168.22.130:5672/, localPort= 8055]
4  o.s.a.r.c.CachingConnectionFactory       : Channel shutdown: channel error; protocol method: #method<channel.close>(reply-code=404, reply-text=NOT_FOUND - no exchange ‘exchange-dog‘ in vhost ‘/‘, class-id=60, method-id=40)
5  c.d.amqp.SpringBootAmqpApplicationTests  : correlationData：CorrelationData [id=e6601e83-fad7-4b53-9968-c74828e62b23]
6  c.d.amqp.SpringBootAmqpApplicationTests  : ack：false
7  c.d.amqp.SpringBootAmqpApplicationTests  : cause：channel error; protocol method: #method<channel.close>(reply-code=404, reply-text=NOT_FOUND - no exchange ‘exchange-dog‘ in vhost ‘/‘, class-id=60, method-id=40)

1 #开启返回模式

2spring.rabbitmq.publisher-returns=true

 1     @Test
 2     void messageSendTestWithReturn(){
 3         /*
 4          * 设置消息返回回调方法；
 5          * 该方法执行时则表示消息投递失败
 6          * @message 为反馈信息；
 7          * @replyCode 一个反馈代码，表示不同投递失败原因；
 8          * @replyText 反馈信息
 9          */
10         rabbitTemplate.setReturnCallback(new RabbitTemplate.ReturnCallback() {
11             @Override
12             public void returnedMessage(Message message, int replyCode, String replyText, String exchange, String routingKey) {
13                 logger.error("返回消息配置："+message.getMessageProperties().toString());
14                 logger.error("反馈代码："+replyCode);
15                 logger.error("反馈内容："+replyText);
16                 logger.error("exchange："+exchange);
17                 logger.error("routingKey："+routingKey);
18             }
19         });
20 
21         //消息内容
22         Map<String,String> map = new HashMap<>();
23         map.put("message","testing return function");
24 
25         //并不存在名为“dog”的routingKey，即投不到现有的queue里
26         rabbitTemplate.convertAndSend("exchange-direct","dog",map);
27     }

1 c.d.amqp.SpringBootAmqpApplicationTests  : 返回消息配置：MessageProperties [headers={}, contentType=application/x-java-serialized-object, contentLength=0, receivedDeliveryMode=PERSISTENT, priority=0, deliveryTag=0]
2 c.d.amqp.SpringBootAmqpApplicationTests  : 反馈代码：312
3 c.d.amqp.SpringBootAmqpApplicationTests  : 反馈内容：NO_ROUTE
4 c.d.amqp.SpringBootAmqpApplicationTests  : exchange：exchange-direct
5 c.d.amqp.SpringBootAmqpApplicationTests  : routingKey：dog

1 #手动消息应答

2 spring.rabbitmq.listener.simple.acknowledge-mode=manual

 1     /*
 2      * 消息手动应答
 3      * @RabbitListener注解监听来自指定队列的消息
 4      */
 5 
 6     @RabbitListener(queues = "springboot-queue")
 7     public void revice(Message message,Channel channel) throws IOException {
 8         try{
 9             logger.info("消息ID："+message.getMessageProperties().getHeader("spring_returned_message_correlation"));
10             logger.info("消息标签："+String.valueOf(message.getMessageProperties().getDeliveryTag()));
11             /* 设置Qos机制
12              * 第一个参数：单条消息的大小(0表示即无限制)
13              * 第二个参数：每次处理消息的数量
14              * 第三个参数：是否为consumer级别（false表示仅当前channel有效）
15              */
16             channel.basicQos(0,1,false);
17             //手动应答消息　　第一个参数是所确认消息的标识，第二参数是是否批量确认
18             channel.basicAck(message.getMessageProperties().getDeliveryTag(),false);
19             
20         }catch (Exception e){
21             channel.basicReject(message.getMessageProperties().getDeliveryTag(),false);
22             logger.error("消息ID："+message.getMessageProperties().getHeader("spring_returned_message_correlation"));
23             logger.error("接收消息发送错误："+e.getMessage());
24         }
25     }

 1     /*
 2      * 创建消息队列的对象：exchange、queue、绑定规则
 3      */
 4     @Test
 5     void createObjectOfMQ(){
 6 
 7         /*
 8          * 在普通队列上配置参数。表示若本队列有死信，则转发到配置指定的转发器中去
 9          * @参数键：x-dead-letter-exchange
10          * @参数名：接收死信的交换器
11          */
12         Map<String,Object> arguments = new HashMap<>();
13         arguments.put("x-dead-letter-exchange","springboot-dlx-exchange");
14 
15         amqpAdmin.declareExchange(new DirectExchange("springboot-direct"));
16         amqpAdmin.declareQueue(new Queue("springboot.queue",true,false,false,arguments));
17         amqpAdmin.declareBinding(new Binding("springboot.queue", Binding.DestinationType.QUEUE,"springboot-direct","springboot",null));
18 
19         //接收死信的交换器
20         amqpAdmin.declareExchange(new TopicExchange("springboot-dlx-exchange"));
21         //交换器收到的死信都转发到该队列，#表示接收所有消息
22         amqpAdmin.declareQueue(new Queue("springboot-dlx.queue",true));
23         amqpAdmin.declareBinding(new Binding("springboot-dlx.queue", Binding.DestinationType.QUEUE,"springboot-dlx-exchange","#",null));
24     }

 1    @Test
 2     void sendMessageWithTTL(){
 3         String str = "dlx test";
 4 
 5         //setExpiration表示设置该消息存活时间
 6         //5秒后该消息未被消息，则转发到死信交换器
 7         Message message = MessageBuilder.withBody(str.getBytes())
 8                 .setExpiration("5000")
 9                 .setContentEncoding("UTF-8")
10                 .setMessageId("dlx-001")
11                 .build();
12 
13         //将消息发送到配置了"x-dead-letter-exchange"参数的队列
14         rabbitTemplate.convertAndSend("springboot-direct","springboot",message);
15     }