我正在尝试使用以下代码段收听主题。但是,默认情况下,其监听队列。在这种情况下,没有xml配置。我完全依靠注释。此外,我完全依靠Spring Boot提供的AutoConfiguration。我不确定如何在JmsListener中将目标类型设置为主题。SpringJMS专家请帮忙。
@Component public class MyTopicListener { @JmsListener(destination = "${trans.alert.topic}") public void receiveMessage(TransactionAlert alert) { logger.info("AlertSubscriberEmail :: Sending Email => <" + alert + ">"); } }
我只是从以下网址获取了完整的Spring引导示例:https://github.com/spring-guides/gs-messaging- jms/
在此创建用于从队列发送和接收消息。要将其更改为主题,必须在Factory实例中设置Pub-Sub属性。
import org.springframework.beans.factory.support.BeanDefinitionBuilder; import org.springframework.beans.factory.support.DefaultListableBeanFactory; 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.connection.CachingConnectionFactory; 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; import javax.jms.ConnectionFactory; @SpringBootApplication @EnableJms public class JmsSampleApplication { public void registerBeans(ConfigurableApplicationContext context ){ BeanDefinitionBuilder builder = BeanDefinitionBuilder.rootBeanDefinition(JmsTemplate.class); CachingConnectionFactory cachingConnectionFactory = new CachingConnectionFactory(); builder.addPropertyValue("connectionFactory", cachingConnectionFactory); // set property value DefaultListableBeanFactory factory = (DefaultListableBeanFactory) context.getAutowireCapableBeanFactory(); factory.registerBeanDefinition("jmsTemplateName", builder.getBeanDefinition()); } @Bean public JmsListenerContainerFactory<?> topicListenerFactory(ConnectionFactory connectionFactory, DefaultJmsListenerContainerFactoryConfigurer configurer) { DefaultJmsListenerContainerFactory factory = new DefaultJmsListenerContainerFactory(); factory.setPubSubDomain(true); // 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 public JmsListenerContainerFactory<?> queueListenerFactory(ConnectionFactory connectionFactory, DefaultJmsListenerContainerFactoryConfigurer configurer) { DefaultJmsListenerContainerFactory factory = new DefaultJmsListenerContainerFactory(); //factory.setPubSubDomain(true); // This provides all boot's default to this factory, including the message converter configurer.configure(factory, connectionFactory); 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) { ConfigurableApplicationContext context = SpringApplication.run(JmsSampleApplication.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.topic", new Email("info@example.com", "Hello")); jmsTemplate.convertAndSend("mailbox.queue", new Email("info@example.com", "Hello")); } }
听众
package org.springboot.jms; import org.springframework.jms.annotation.JmsListener; import org.springframework.stereotype.Component; /** * Created by RGOVIND on 10/20/2016. */ @Component public class HelloTopicListener { @JmsListener(destination = "mailbox.topic", containerFactory = "topicListenerFactory") public void receiveTopicMessage(Email email) { System.out.println("Received <" + email + ">"); } @JmsListener(destination = "mailbox.queue", containerFactory = "queueListenerFactory") public void receiveQueueMessage(Email email) { System.out.println("Received <" + email + ">"); } }
完成此操作后,您就可以全部订阅所选的主题。
当然,有多种方法,您可以为不同的jmsTemplates提供一个bean映射,当您根据队列或主题需要它们时可以使用每种bean。模板和bean可以用您选择的本SO问题中讨论的方法实例化。希望能帮助到你