Installation#
docker run --name rabbitmq \
-p 5672:5672 \
-p 15672:15672 \
--network hm-net \
--hostname my-rabbit \
-e RABBITMQ_DEFAULT_USER=user \
-e RABBITMQ_DEFAULT_PASS=password \
-v mq_plugins:/plugins \
-d rabbitmq:3.8-management
Spring Boot Integration#
Sender#
- Sender timeout reconnect (asynchronous) configuration
spring:
application:
name: publisher
rabbitmq:
host: 192.168.208.128
port: 5672
username: user
password: password
virtual-host: /hmall
# Send confirm mechanism
publisher-confirm-type: correlated
publisher-returns: true
# Retry mechanism
template:
retry:
enabled: true
max-attempts: 3
initial-interval: 1000
max-interval: 10000
multiplier: 2
server:
port: 7081
- Using configuration:
- Configure message conversion service, the default is JDK serialization, which is not easy to read and takes up a lot of space. Compatibility is not high.
@Bean
public MessageConverter messageConverter() {
Jackson2JsonMessageConverter jackson2JsonMessageConverter = new Jackson2JsonMessageConverter();
jackson2JsonMessageConverter.setCreateMessageIds(true);
return jackson2JsonMessageConverter;
}
- Set message send callback
There are two cases for the callback: one is that when it reaches the exchange, it will return confirm information; if it does not reach the queue, it will call ReturnsCallback, which is generally an operational issue.
public void init() {
rabbitTemplate.setReturnsCallback(
(ReturnedMessage returned) -> {
System.out.println("Message lost: " + returned.getMessage());
}
);
rabbitTemplate.setBeforePublishPostProcessors((message) -> {
MessageProperties messageProperties = message.getMessageProperties();
String messageId = messageProperties.getMessageId();
System.out.println("messageId: " + messageId);
return message;
});
}
JAVA API Usage
- Usage with callback:
public void testRabiitStart() throws InterruptedException {
CorrelationData correlationData = new CorrelationData("1");
// Set callback
rabbitTemplate.setConfirmCallback((correlationData1, ack, cause) -> {
System.out.println("cause: " + cause);
System.out.println("correlationData: " + correlationData1);
if (ack) {
System.out.println("Message sent successfully");
} else {
System.out.println("Message sending failed");
}
});
// Queue name
String queueName = "queue.lyw";
// Send message, if there is no queue, it will be created automatically
rabbitTemplate.convertAndSend("direct.lyw", queueName, "hello rabbitmq", correlationData);
}
- Using delay queue
public void testRabiitMqDelayMessage() {
CorrelationData correlationData = new CorrelationData("1");
rabbitTemplate.convertAndSend("delay.direct", "delay.queue", "hello rabbitmq delay",
(Message message) -> {
message.getMessageProperties().setDelayLong(10000L);
return message;
}
, correlationData);
}
Consumer#
Spring Configuration
spring:
application:
name: publisher
rabbitmq:
host: 192.168.208.128
port: 5672
username: user
password: password
virtual-host: /hmall
listener:
simple:
# Indicates automatic acknowledgment, when sending fails, it will retry, if retries fail, send to dead letter queue (three strategies)
acknowledge-mode: auto
retry:
enabled: true
max-attempts: 3
initial-interval: 1000
max-interval: 10000
multiplier: 2
stateless: true
server:
port: 7082
Create exchange, queue, binding relationship
@Bean
public DirectExchange directExchange() {
return new DirectExchange("direct.lyw");
}
@Bean
public Queue queue() {
return new Queue("queue.lyw");
}
@Bean
public Binding binding(Queue queue, FanoutExchange fanoutExchange) {
return BindingBuilder.bind(queue).to(fanoutExchange);
}
Create message listener
@RabbitListener(queues = "work.queue1")
public void onMessageWorkerQueue2(String message) throws InterruptedException {
Thread.sleep(200);
Thread thread = Thread.currentThread();
log.info("Work queue 2 received message: {},time:{}, thread{}", message, LocalDateTime.now(), thread.getName());
}
Dead letter queue initialization
After reaching the retry count, there are three strategies:
@Bean
public MessageRecoverer republishMessageRecoverer(RabbitTemplate rabbitTemplate){
return new RepublishMessageRecoverer(rabbitTemplate, "error.direct", "error");
}
Using Delay Queue#
Install Plugin (github)
rabbitmq/rabbitmq-delayed-message-exchange: Delayed Messaging for RabbitMQ (github.com)
Copy plugin to plugin folder
Install plugin
rabbitmq-plugins enable rabbitmq_delayed_message_exchange
Create exchange, queue, binding relationship
@Bean
public Queue delayQueue() {
return new Queue("delay.queue");
}
@Bean
public DirectExchange delayExchange() {
return ExchangeBuilder.directExchange("delay.direct").delayed().durable(true).build();
}
@Bean Binding delayBinding(Queue delayQueue, DirectExchange delayExchange) {
return BindingBuilder.bind(delayQueue).to(delayExchange).with("delay.queue");
}
Send message
@Test
public void testRabiitMqDelayMessage() {
CorrelationData correlationData = new CorrelationData("1");
rabbitTemplate.convertAndSend("delay.direct", "delay.queue", "hello rabbitmq delay",
(Message message) -> {
message.getMessageProperties().setDelayLong(10000L);
return message;
}
, correlationData);
}
@Test
public void testRabiitMqDelayMessage2() {
rabbitTemplate.convertAndSend("delay.direct", "delay.queue", "1812793267355439105", message -> {
message.getMessageProperties().setDelayLong(10000L);
return message;
});
}
Consume delayed messages: Same as ordinary queues
This article is synchronized and updated to xLog by Mix Space
The original link is https://me.liuyaowen.club/posts/default/20240820and1