rabbitmq学习10:使用spring-amqp发送消息及异步接收消息
前面我们已经学习了发送消息及同步接收消息的例子了。下面我们来看看如何通过Spring配置来实现异步接收消息。
现在我们建立两个WEB项目。发送消息的项目命名为”rabbitmq-demo-producer“ ,异步接受的消息项目名称”rabbitmq-demo-consumer“。
下面来看看rabbitmq-demo-producer项目中发送信息的程序及配置。
MessageProducer类是用于发送消息的类。实现如下
package com.abin.rabbitmq; import org.springframework.amqp.rabbit.core.RabbitTemplate; public class MessageProducer { private RabbitTemplate rabbitTemplate; public void sendMessage(Integer i) { String message = "Hello World wubin " + "#" + i; //Exchange的名称为"hello.topic",routingkey的名称为"hello.world.q123ueue" rabbitTemplate.convertAndSend("hello.topic", "hello.world.q123ueue", message); System.out.println("发送第" + i + "个消息成功!内容为:" + message); // String messages = "Hello World direct " + "#" + i; // rabbitTemplate.convertAndSend("hello.direct", "hello.world.queue", // messages); // System.out.println("发送第" + i + "个消息成功!内容为:" + messages); } public void setRabbitTemplate(RabbitTemplate rabbitTemplate) { this.rabbitTemplate = rabbitTemplate; } }
spring的配置文件如下:applicationContext-rabbitmq.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> <bean id="connectionFactory" class="org.springframework.amqp.rabbit.connection.SingleConnectionFactory"> <constructor-arg value="localhost" /> <property name="username" value="guest" /> <property name="password" value="guest" /> </bean> <bean id="amqpAdmin" class="org.springframework.amqp.rabbit.core.RabbitAdmin"> <constructor-arg ref="connectionFactory" /> </bean> <bean id="rabbitTemplate" class="org.springframework.amqp.rabbit.core.RabbitTemplate"> <constructor-arg ref="connectionFactory"></constructor-arg> </bean> <bean id="messageProducer" class="com.abin.rabbitmq.MessageProducer"> <property name="rabbitTemplate"> <ref bean="rabbitTemplate" /> </property> </bean> </beans>
对于发送消息的程序自己可以实现,我是通过Struts2来实现的,例如
package com.abin.action; import java.util.Date; import com.abin.rabbitmq.MessageProducer; import com.opensymphony.xwork2.ActionSupport; public class SendAction extends ActionSupport { private MessageProducer messageProducer; public String execute() throws Exception { Date a = new Date(); long b = System.currentTimeMillis(); for (int i = 0; i <= 10000; i++) { messageProducer.sendMessage(i); } System.out.println(a); System.out.println(new Date()); System.out.println("共花了" + (System.currentTimeMillis() - b) + "ms"); return null; } public void setMessageProducer(MessageProducer messageProducer) { this.messageProducer = messageProducer; } }
发送消息项目的程序差不多就这些了
下面来看看接受消息的程序如下
HelloWorldHandler类用于接收消息的处理类,如下
package com.abin.rabbitmq; import java.util.Date; public class HelloWorldHandler { public void handleMessage(String text) { System.out.println("Received: " + text); System.out.println(new Date()); } }
spring的配置文件如下:applicationContext-rabbitmq.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> <!-- 创建connectionFactory --> <bean id="connectionFactory" class="org.springframework.amqp.rabbit.connection.SingleConnectionFactory"> <constructor-arg value="localhost" /> <property name="username" value="guest" /> <property name="password" value="guest" /> </bean> <!-- 创建rabbitAdmin 代理类 --> <bean id="rabbitAdmin" class="org.springframework.amqp.rabbit.core.RabbitAdmin"> <constructor-arg ref="connectionFactory" /> </bean> <!-- 创建rabbitTemplate 消息模板类 --> <bean id="rabbitTemplate" class="org.springframework.amqp.rabbit.core.RabbitTemplate"> <constructor-arg ref="connectionFactory"></constructor-arg> </bean> <!-- 声明Queue并设定Queue的名称 --> <bean id="helloWorldQueue" class="org.springframework.amqp.core.Queue"> <constructor-arg value="hello.world.queue"></constructor-arg> </bean> <!-- 声明消息转换器为SimpleMessageConverter --> <bean id="messageConverter" class="org.springframework.amqp.support.converter.SimpleMessageConverter"> </bean> <!-- 声明Exchange的类型为topic并设定Exchange的名称 --> <bean id="hellotopic" class="org.springframework.amqp.core.TopicExchange"> <constructor-arg value="hello.topic"></constructor-arg> </bean> <!-- 声明Exchange的类型为direct并设定Exchange的名称 --> <bean id="hellodirect" class="org.springframework.amqp.core.DirectExchange"> <constructor-arg value="hello.direct"></constructor-arg> </bean> <!-- 通过Binding来判定Queue、Exchange、routingKey --> <!-- 其中构建Binding的参数1是Queue,参数2是Exchange,参数3是routingKey --> <bean id="queuebling" class="org.springframework.amqp.core.Binding"> <constructor-arg index="0" ref="helloWorldQueue"></constructor-arg> <constructor-arg index="1" ref="hellotopic"></constructor-arg> <constructor-arg index="2" value="hello.world.#"></constructor-arg> </bean> <!-- 监听生产者发送的消息开始 --> <!-- 用于接收消息的处理类 --> <bean id="helloWorldHandler" class="com.abin.rabbitmq.HelloWorldHandler"> </bean> <!-- 用于消息的监听的代理类MessageListenerAdapter --> <bean id="helloListenerAdapter" class="org.springframework.amqp.rabbit.listener.adapter.MessageListenerAdapter"> <constructor-arg ref="helloWorldHandler" /> <property name="defaultListenerMethod" value="handleMessage"></property> <property name="messageConverter" ref="messageConverter"></property> </bean> <!-- 用于消息的监听的容器类SimpleMessageListenerContainer,对于queueName的值一定要与定义的Queue的值相同 --> <bean id="listenerContainer" class="org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer"> <property name="queueName" value="hello.world.queue"></property> <property name="connectionFactory" ref="connectionFactory"></property> <property name="messageListener" ref="helloListenerAdapter"></property> </bean> <!-- 监听生产者发送的消息结束 --> </beans>
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