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>