Add AMQP section to the documetation

Closes gh-3348
pull/3435/head
Lucas Saldanha 10 years ago committed by Stephane Nicoll
parent 61c5258246
commit 0ce7be4413

@ -2934,6 +2934,140 @@ more details.
[[boot-features-amqp]]
=== AMQP
The Advanced Message Queuing Protocol (AMQP) is a platform-neutral, wire-level protocol for
message-oriented middleware. The Spring AMQP project applies core Spring concepts to the development of
AMQP-based messaging solutions.
[[boot-features-rabbitmq]]
==== RabbitMQ support
RabbitMQ is a lightweight, reliable, scalable and portable message broker based on the AMQP protocol.
Spring uses RabbitMQ to communicate using the AMQP protocol.
RabbitMQ configuration is controlled by external configuration properties in
`+spring.rabbitmq.*+`. For example, you might declare the following section in
`application.properties`:
[source,properties,indent=0]
----
spring.rabbitmq.host=localhost
spring.rabbitmq.port=5672
spring.rabbitmq.username=guest
spring.rabbitmq.password=guest
----
See
{sc-spring-boot-autoconfigure}/amqp/RabbitProperties.{sc-ext}[`RabbitProperties`]
for more of the supported options.
TIP: Check http://spring.io/blog/2010/06/14/understanding-amqp-the-protocol-used-by-rabbitmq/[Understanding AMQP, the protocol used by RabbitMQ]
for more details.
[[boot-features-using-amqp-template]]
[[boot-features-using-amqp-sending]]
==== Sending a message
Spring's `AmqpTemplate` and `AmqpAdmin` are auto-configured and you can autowire them directly into your own
beans:
[source,java,indent=0]
----
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.amqp.core.AmqpAdmin;
import org.springframework.amqp.core.AmqpTemplate;
import org.springframework.stereotype.Component;
@Component
public class MyBean {
private final AmqpAdmin amqpAdmin;
private final AmqpTemplate amqpTemplate;
@Autowired
public MyBean(AmqpAdmin amqpAdmin, AmqpTemplate amqpTemplate) {
this.adminTemplate = adminTemplate;
this.amqpTemplate = amqpTemplate;
}
// ...
}
----
To send a message you should declare a queue using `AmqpAdmin` and then use `AmqpTemplate` to send
the message to the declared queue.
[source,java,indent=0]
----
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.amqp.core.AmqpAdmin;
import org.springframework.amqp.core.AmqpTemplate;
import org.springframework.stereotype.Component;
@Component
public class MyBean {
// ...
@PostConstruct
public void setUpQueue() {
this.amqpAdmin.declareQueue(new Queue("foo"));
}
public void send() {
this.rabbitTemplate.convertAndSend("foo", "hello");
}
}
----
[[boot-features-using-amqp-receiving]]
==== Receiving a message
Spring's `ConnectionFactory` is auto-configured and you can autowire it directly into your own
beans.
To receive a message from a queue you should create a `SimpleMessageListenerContainer`
using the configured `ConnectionFactory`. The `SimpleMessageListenerContainer` is
responsible for handling incoming messages through it's `MessageListenerAdapter`.
[source,java,indent=0]
----
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer;
import org.springframework.amqp.rabbit.listener.adapter.MessageListenerAdapter;
@SpringBootApplication
public class AmqpDemoApplication {
@Autowired
private ConnectionFactory connectionFactory;
@Bean
public SimpleMessageListenerContainer container() {
SimpleMessageListenerContainer container = new SimpleMessageListenerContainer(
this.connectionFactory);
MessageListenerAdapter adapter = new MessageListenerAdapter(new Object() {
public void handleMessage(String msg) {
System.out.println(msg);
}
});
container.setMessageListener(adapter);
container.setQueueNames("foo");
return container;
}
// ...
}
----
In the code above the `SimpleMessageListenerContainer` was configured to receive messages from the declared "foo" queue.
When a message is sent to "foo" queue it will be delivered to the handleMessage(String msg) method.
[[boot-features-email]] [[boot-features-email]]
== Sending email == Sending email
The Spring Framework provides an easy abstraction for sending email using the The Spring Framework provides an easy abstraction for sending email using the

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