Java 当使用rabbitmq时,如何分别配置消费者和生产者spring引导应用程序?
我观看了一个教程,该教程解释了如何将RabbitMQ集成到SpringBoot应用程序中。在本教程中,Java 当使用rabbitmq时,如何分别配置消费者和生产者spring引导应用程序?,java,spring,spring-boot,rabbitmq,spring-amqp,Java,Spring,Spring Boot,Rabbitmq,Spring Amqp,我观看了一个教程,该教程解释了如何将RabbitMQ集成到SpringBoot应用程序中。在本教程中,ReceiveMessageHandler.java(Consumer)和SendMessageController.java(Producer)类位于同一个项目中。我想在两个不同的Spring Boot应用程序中实现它们。但是,由于ConfigureRabbitMq类的原因,我无法将教程项目分为两个消费者项目和生产者项目。因为它耦合了ReceiveMessageHandler.java(使用者
ReceiveMessageHandler.java
(Consumer)和SendMessageController.java
(Producer)类位于同一个项目中。我想在两个不同的Spring Boot应用程序中实现它们。但是,由于ConfigureRabbitMq
类的原因,我无法将教程项目分为两个消费者项目和生产者项目。因为它耦合了ReceiveMessageHandler.java
(使用者)和SendMessageController.java
(生产者)类
如何实现和配置两个不同的cosnumer和producer Spring引导应用程序
ConfigureRabbitMq.java
import com.example.demorabbitmq.rabbitmq.consumer.ReceiveMessageHandler;
import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.Queue;
import org.springframework.amqp.core.TopicExchange;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer;
import org.springframework.amqp.rabbit.listener.adapter.MessageListenerAdapter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
public class ConfigureRabbitMq {
public static final String EXCHANGE_NAME = "mikeexchange2";
public static final String QUEUE_NAME = "mikequeue2";
@Bean
Queue createQueue() {
return new Queue(QUEUE_NAME, true, false, false);
}
@Bean
TopicExchange exchange(){
return new TopicExchange(EXCHANGE_NAME);
}
@Bean
Binding binding(Queue q, TopicExchange exchange){
return BindingBuilder.bind(q).to(exchange).with("mike.#");
}
@Bean
SimpleMessageListenerContainer container(ConnectionFactory connectionFactory
, MessageListenerAdapter messageListenerAdapter){
SimpleMessageListenerContainer container = new SimpleMessageListenerContainer();
container.setConnectionFactory(connectionFactory);
container.setQueueNames(QUEUE_NAME);
container.setMessageListener(messageListenerAdapter);
return container;
}
@Bean
MessageListenerAdapter listenerAdapter(ReceiveMessageHandler handler){
return new MessageListenerAdapter(handler, "handleMessage");
}
}
ReceiveMessageHandler.java
(消费者)
SendMessageController.java
(制作人)
您需要在这两个项目中配置RabbitMQ,但不需要在Producer项目的ConfigureRabbitMq.class中创建以下bean:
@Bean
MessageListenerAdapter listenerAdapter(ReceiveMessageHandler handler){
return new MessageListenerAdapter(handler, "handleMessage");
}
然而,如果我在producer项目中使用这个bean,那么producer如何解析ReceiveMessageHandler类?因为它将被放置在唯一的消费者项目中。好的,我明白了。但是,如果我从producer项目中删除这个Bean,它会导致如下错误:
com.example.producer.rabbitmq.ConfigureRabbitMq中方法simpleMessageListenerContainer的参数1需要找不到类型为“org.springframework.amqp.rabbit.listener.adapter.MessageListenerAdapter”的bean。
您也不需要simpleMessageListenerContainer bean,在您的生产者类中,对吗?非常感谢您的帮助,在删除SimpleMessageListenerContainerBean后,它起作用了。我有一个问题,createQueue
、exchange
和binding
bean应该同时放置在消费者类和生产者类中吗?或者只有一个就足够了?
import com.example.demorabbitmq.rabbitmq.ConfigureRabbitMq;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class SendMessageController {
private final RabbitTemplate rabbitTemplate;
public SendMessageController(RabbitTemplate rabbitTemplate) {
this.rabbitTemplate = rabbitTemplate;
}
@PostMapping("/send")
public String sendMessage(@RequestParam String themessage){
rabbitTemplate.convertAndSend(ConfigureRabbitMq.EXCHANGE_NAME,
"mike.springmessages", themessage);
return "We have sent a message! :" + themessage;
}
}
@Bean
MessageListenerAdapter listenerAdapter(ReceiveMessageHandler handler){
return new MessageListenerAdapter(handler, "handleMessage");
}