使用JMS进行消息传递

<？xml版本=“ 1.0”编码=“ 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 https://maven.apache.org/xsd/maven-4.0.0.xsd”>
	<modelVersion> 4.0.0 </ modelVersion>
	<父母>
		<groupId> org.springframework.boot </ groupId>
		<artifactId> spring-boot-starter-parent </ artifactId>
		<version> 2.4.4 </ version>
		<relativePath /> <！-从存储库中查找父级->
	</ parent>
	<groupId> com.example </ groupId>
	<artifactId> gs-messaging-jms </ artifactId>
	<version> 0.0.1-SNAPSHOT </ version>
	<name> gs-messaging-jms </ name>
	<description> Spring Boot的演示项目</ description>
	<属性>
		<java.version> 1.8 </java.version>
	</ properties>
	<依赖项>
		<依赖性>
			<groupId> org.springframework.boot </ groupId>
			<artifactId> spring-boot-starter-activemq </ artifactId>
		</ dependency>

		<依赖性>
			<groupId> org.springframework.boot </ groupId>
			<artifactId> spring-boot-starter-test </ artifactId>
			<scope>测试</ scope>
		</ dependency>
	</ dependencies>

	<内部版本>
		<插件>
			<插件>
				<groupId> org.springframework.boot </ groupId>
				<artifactId> spring-boot-maven-plugin </ artifactId>
			</ plugin>
		</ plugins>
	</ build>

</ project>

插件{
	id'org.springframework.boot'版本'2.4.4'
	id'io.spring.dependency-management'版本'1.0.11.RELEASE'
	id'java'
}

组='com.example'
版本='0.0.1-SNAPSHOT'
sourceCompatibility ='1.8'

储存库{
	mavenCentral（）
}

依赖项{
	实现'org.springframework.boot：spring-boot-starter-activemq'
	testImplementation'org.springframework.boot：spring-boot-starter-test'
}

测试 {
	useJUnitPlatform（）
}

package hello;

public class Email {

  private String to;
  private String body;

  public Email() {
  }

  public Email(String to, String body) {
    this.to = to;
    this.body = body;
  }

  public String getTo() {
    return to;
  }

  public void setTo(String to) {
    this.to = to;
  }

  public String getBody() {
    return body;
  }

  public void setBody(String body) {
    this.body = body;
  }

  @Override
  public String toString() {
    return String.format("Email{to=%s, body=%s}", getTo(), getBody());
  }

}

package hello;

import org.springframework.jms.annotation.JmsListener;
import org.springframework.stereotype.Component;

@Component
public class Receiver {

  @JmsListener(destination = "mailbox", containerFactory = "myFactory")
  public void receiveMessage(Email email) {
    System.out.println("Received <" + email + ">");
  }

}

package hello;

import javax.jms.ConnectionFactory;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jms.DefaultJmsListenerContainerFactoryConfigurer;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.jms.annotation.EnableJms;
import org.springframework.jms.config.DefaultJmsListenerContainerFactory;
import org.springframework.jms.config.JmsListenerContainerFactory;
import org.springframework.jms.core.JmsTemplate;
import org.springframework.jms.support.converter.MappingJackson2MessageConverter;
import org.springframework.jms.support.converter.MessageConverter;
import org.springframework.jms.support.converter.MessageType;

@SpringBootApplication
@EnableJms
public class Application {

  @Bean
  public JmsListenerContainerFactory<?> myFactory(ConnectionFactory connectionFactory,
                          DefaultJmsListenerContainerFactoryConfigurer configurer) {
    DefaultJmsListenerContainerFactory factory = new DefaultJmsListenerContainerFactory();
    // This provides all boot's default to this factory, including the message converter
    configurer.configure(factory, connectionFactory);
    // You could still override some of Boot's default if necessary.
    return factory;
  }

  @Bean // Serialize message content to json using TextMessage
  public MessageConverter jacksonJmsMessageConverter() {
    MappingJackson2MessageConverter converter = new MappingJackson2MessageConverter();
    converter.setTargetType(MessageType.TEXT);
    converter.setTypeIdPropertyName("_type");
    return converter;
  }

  public static void main(String[] args) {
    // Launch the application
    ConfigurableApplicationContext context = SpringApplication.run(Application.class, args);

    JmsTemplate jmsTemplate = context.getBean(JmsTemplate.class);

    // Send a message with a POJO - the template reuse the message converter
    System.out.println("Sending an email message.");
    jmsTemplate.convertAndSend("mailbox", new Email("[email protected]", "Hello"));
  }

}