Send mail by Spring Integration gateway through Rabbit MQ

Maven dependency

<dependency>
  <groupId>org.springframework.integration</groupId>
  <artifactId>spring-integration-mail</artifactId>
  <version>2.2.3.RELEASE</version>
</dependency>

<dependency>
  <groupId>javax.mail</groupId>
  <artifactId>mail</artifactId>
  <version>1.4.6</version>
</dependency>

<dependency>
  <groupId>org.springframework.integration</groupId>
  <artifactId>spring-integration-amqp</artifactId>
  <version>2.2.3.RELEASE</version>
</dependency>

Gateway interface

import org.springframework.integration.annotation.Gateway;
import org.springframework.integration.annotation.Header;
import org.springframework.integration.annotation.Payload;
import org.springframework.integration.mail.MailHeaders;

public interface SendMail {

  @Gateway(requestChannel = "input")
  void send(@Header(MailHeaders.FROM) String from, @Header(MailHeaders.TO) String to, @Header(MailHeaders.SUBJECT) String subject, @Payload String message);

}

Spring configuration

<?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:int="http://www.springframework.org/schema/integration" xmlns:int-mail="http://www.springframework.org/schema/integration/mail"
  xmlns:int-amqp="http://www.springframework.org/schema/integration/amqp" xmlns:rabbit="http://www.springframework.org/schema/rabbit"
  xsi:schemaLocation="http://www.springframework.org/schema/integration/amqp http://www.springframework.org/schema/integration/amqp/spring-integration-amqp.xsd
    http://www.springframework.org/schema/integration/mail http://www.springframework.org/schema/integration/mail/spring-integration-mail.xsd
    http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration.xsd
    http://www.springframework.org/schema/rabbit http://www.springframework.org/schema/rabbit/spring-rabbit.xsd
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

  <rabbit:connection-factory id="rabbitConnectionFactory" host="xxx.xxx.xxx.xxx" virtual-host="/linus" username="linus_chien" password="xxx" />

  <int-amqp:channel id="input" connection-factory="rabbitConnectionFactory" queue-name="linus.test" />

  <int-mail:outbound-channel-adapter id="mailAdaptor" channel="input" host="xxx.xxx.xxx.xxx" />

  <int:gateway id="sendMail" service-interface="SendMail" />

</beans>

Test Case

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration
public class SpringIntegrationTest {

  @Autowired
  private SendMail sendMail;

  @Test
  public void test() {
    sendMail.send("linus_chien@xxx.xxx.xxx.xxx", "linus_chien@xxx.xxx.xxx.xxx", "Test", "This is a gateway annotation test.");
  }

}

就這樣沒寫什麼程式就可以發信了。