rabbitmq学习笔记2——消息发送与接收
创建项目
使用idea(版本2018.2),基于jdk1.8,springboot版本2.1,maven3.5.4
分别创建3个项目,group都为com.study.rabbitmq
项目1:framework,框架,存放共用的实体类
项目2:producer,生产者,存放消息发送服务
项目3:consumer,消费者,存放消息处理服务
1.framework项目,
创建package,命名为entity,在其下创建实体类order,只为模拟,设置了两个属性,id与no
注意:需要实现serializable接口,否则消息进行序列化时会报错。
package com.study.rabbitmq.framework.entity;
import lombok.data;
import java.io.serializable;
@data
public class order implements serializable {
private string id;
private string no;
}
2.producer项目
a.pom中增加对framework的依赖
<dependency>
<groupid>com.study.rabbitmq</groupid>
<artifactid>framework</artifactid>
<version>0.0.1-snapshot</version>
</dependency>
b.配置文件中增加rabbitmq连接信息
spring:
rabbitmq:
addresses: 127.0.0.1
port: 5672
username: guest
password: guest
virtual-host: /
server:
port: 8080
c.创建package,命名为service,其下创建消息发送服务,命名为messagesendservice
package com.study.rabbitmq.producer.service;
import lombok.extern.slf4j.slf4j;
import org.springframework.amqp.rabbit.connection.correlationdata;
import org.springframework.amqp.rabbit.core.rabbittemplate;
import org.springframework.beans.factory.annotation.autowired;
import com.study.rabbitmq.framework.entity.order;
import org.springframework.stereotype.service;
import java.util.uuid;
@service
@slf4j
public class messagesendservice {
@autowired
private rabbittemplate rabbittemplate;
public void sendorder(order order)
{
string messageid=uuid.randomuuid().tostring();
log.info(messageid);
correlationdata correlationdata=new correlationdata();
correlationdata.setid(messageid);
rabbittemplate.convertandsend("order-exchange","123",order,correlationdata);
}
}
3.consumer项目
a.pom中增加对framework的依赖
<dependency>
<groupid>com.study.rabbitmq</groupid>
<artifactid>framework</artifactid>
<version>0.0.1-snapshot</version>
</dependency>
b.配置文件中增加rabbitmq连接信息
spring:
rabbitmq:
addresses: 127.0.0.1
port: 5672
username: guest
password: guest
listener:
simple:
acknowledge-mode: manual
concurrency: 5
max-concurrency: 10
server:
port: 8081
c.创建package,命名为service,其下创建消息处理服务,命名为messagehandleservice
package com.study.rabbitmq.consumer.service;
import com.study.rabbitmq.framework.entity.order;
import lombok.extern.slf4j.slf4j;
import org.springframework.amqp.rabbit.annotation.*;
import org.springframework.messaging.handler.annotation.payload;
import org.springframework.stereotype.service;
@service
@slf4j
public class messagehanlerservice {
@rabbitlistener(bindings = @queuebinding(
value = @queue("order-queue"),
exchange =@exchange("order-exchange"),
key ="123"
))
@rabbithandler
public void handleorder(@payload order order)
{
log.info("开始处理订单信息");
log.info("订单编号为:"+order.getno());
}
}
配置rabbitmq服务
使用rabbitmq自带的管理页面,http://localhost:15672/#/
1.创建exchange,命名为order-exchange
2.创建queue,命名为order-queue
3.绑定二者,路由key设置为123
我们的应用向rabbitmq发送消息需要以上信息。
此处涉及一些rabbitmq的基本概念,交换机、队列,请自行了解rabbitmq框架体系。
发送消息测试
为producer项目下的messagesendservice创建junit测试
package com.study.rabbitmq.producer.service;
import com.study.rabbitmq.framework.entity.order;
import org.junit.test;
import org.junit.runner.runwith;
import org.springframework.beans.factory.annotation.autowired;
import org.springframework.boot.test.context.springboottest;
import org.springframework.test.context.junit4.springrunner;
@runwith(springrunner.class)
@springboottest
public class messagesendservicetest {
@autowired
private messagesendservice orderservice;
@test
public void sendorder() {
order order=new order();
order.setid("1");
order.setno("单号1247");
orderservice.sendorder(order);
}
}
运行测试
无报错,进入rabbitmq管理页面,http://localhost:15672/#/,进入queues的tab页,可看到,已经收到一条消息处于ready状态
接收消息
启动运行consumer项目,查看控制台输出的消息,确实消息已被接收及处理。