微信网站开发合同,塘厦三局医院,重庆网络学院登录入口,深圳建设项目环保网站办事指南提示#xff1a;文章写完后#xff0c;目录可以自动生成#xff0c;如何生成可参考右边的帮助文档 文章目录 发布订阅模式 (fanout)---案例前言RabbitListener和RabbitHandler的使用 1.通过Spring官网快速创建一个RabbitMQ的生产者项目2.导入项目后在application.yml文件中配… 提示文章写完后目录可以自动生成如何生成可参考右边的帮助文档 文章目录 发布订阅模式 (fanout)---案例前言RabbitListener和RabbitHandler的使用 1.通过Spring官网快速创建一个RabbitMQ的生产者项目2.导入项目后在application.yml文件中配置3.创建一个RabbitMqConfig配置类4. 生产者5.测试生产者创建mq是否成功访问网址 http://localhost:15672/#/queues 6.再创建一个消费者项目7. 创建消费者8.测试消费者接收信息 发布订阅模式 (fanout)—案例
前言 RabbitListener和RabbitHandler的使用 1.通过Spring官网快速创建一个RabbitMQ的生产者项目 2.导入项目后在application.yml文件中配置
# 服务端口
server:port: 8081#配置rabbitmq服务 测试不用写默认本机
spring:rabbitmq:username: guest #默认账号password: guest #默认密码virtual-host: /host: localhostport: 5672#消息确认配置项#确认消息已发送到交换机 Exchangepublisher-confirm-type: correlated#确认消息已发送到队列: Queuepublisher-returns: true
3.创建一个RabbitMqConfig配置类
package com.exam.RebbitMQ.config;import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.FanoutExchange;
import org.springframework.amqp.core.Queue;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;Configuration
public class RabbitMqConfig {//1:声明注册fanout模式的交换机,参数1对应的service的fanoutName参数2持久化(true,false),参数3自动删除false/trueBeanpublic FanoutExchange fanoutExchange(){return new FanoutExchange(fanout_order_exchang, true, false);}//2:声明队列 sms.fanout.queue,email.fanout.queue,duanxin.fanout.queue//参数1:名字,参数2:持久化队列true//短信队列Beanpublic Queue smsQueue() {System.err.println(执行了sms);return new Queue(sms.fanout.queue,true);}Beanpublic Queue duanxinQueue() {System.err.println(执行了duanxin);return new Queue(duanxin.fanout.queue,true);}//邮箱队列Beanpublic Queue emailQueue() {System.err.println(执行了email);return new Queue(email.fanout.queue,true);}//3:完成绑定关系(队列和交换机完成绑定关系)Beanpublic Binding smsBinding() {//把smsQueue放到fanoutExchange交换机上面return BindingBuilder.bind(smsQueue()).to(fanoutExchange());}Beanpublic Binding duanxinBinding() {//把duanxinQueue放到fanoutExchange交换机上面return BindingBuilder.bind(duanxinQueue()).to(fanoutExchange());}Beanpublic Binding emailBinding() {//把emailQueue放到fanoutExchange交换机上面return BindingBuilder.bind(emailQueue()).to(fanoutExchange());}}
4. 生产者
OrderService
package com.exam.RebbitMQ.service;public interface OrderService {void makeOrder(String userid,String productid,int num);
}
OrderServiceImpl
package com.exam.RebbitMQ.service.Impl;import java.util.UUID;import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;import com.exam.RebbitMQ.service.OrderService;Service
public class OrderServiceImpl implements OrderService{Autowiredprivate RabbitTemplate rabbitTemplate;/*** 模拟用户下单 **/public void makeOrder(String userid,String productid,int num) {//1.根据商品ID查询商品是否充足//2.保存订单String orderId UUID.randomUUID().toString();System.err.println(订单生成成功orderId);//3.通过MQ来完成消息的分发//参数1:交换机 参数二:路由key/queue队列名称 参数三:消息内容String exchangName fanout_order_exchang;String routingKey ;rabbitTemplate.convertAndSend(exchangName, routingKey, orderId);}}
5.测试生产者创建mq是否成功
在项目的test中发送请求
package com.huyi.rabbitmq;import com.huyi.rabbitmq.service.OrderService;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;SpringBootTest
class RabbitMqApplicationTests {Autowiredprivate OrderService orderService;Testvoid contextLoads() {orderService.makeOrder(1,1, 18);}} 访问网址 http://localhost:15672/#/queues 6.再创建一个消费者项目 yml配置
# 服务端口
server:port: 8082#配置rabbitmq服务 测试不用写默认本机
spring:rabbitmq:username: guest #默认账号password: guest #默认密码virtual-host: /host: localhostport: 5672#消息确认配置项#确认消息已发送到交换机 Exchangepublisher-confirm-type: correlated#确认消息已发送到队列: Queuepublisher-returns: true
7. 创建消费者
SmsConsumerService、SmsConsumerServiceImpl
package com.huyi.rabbitmq_consumber.service;public interface SmsConsumerService {void reviceMessage(String message);
}package com.huyi.rabbitmq_consumber.service.Impl;import com.huyi.rabbitmq_consumber.service.SmsConsumerService;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;Component
public class SmsConsumerServiceImpl implements SmsConsumerService {//注意这里要和生产者RabbitMqConfig文件中的名字对应起来RabbitListener(queues {sms.fanout.queue})public void reviceMessage(String message) {System.err.println(sms_fanout--接收到了订单信息);}
}
EmailConsumerService、EmailConsumerServiceImpl
package com.huyi.rabbitmq_consumber.service;public interface EmailConsumerService {void reviceMessage(String message);
}
package com.huyi.rabbitmq_consumber.service.Impl;import com.huyi.rabbitmq_consumber.service.EmailConsumerService;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;Component
RabbitListener(queues {email.fanout.queue})
public class EmailConsumerServiceImpl implements EmailConsumerService {RabbitHandlerpublic void reviceMessage(String message) {System.err.println(Email_fanout--接收到了订单信息message);}
}
DuanxinConsumerService、DuanxinConsumerServiceImpl
package com.huyi.rabbitmq_consumber.service;public interface DuanxinConsumerService {void reviceMessage(String message);
}
package com.huyi.rabbitmq_consumber.service.Impl;import com.huyi.rabbitmq_consumber.service.DuanxinConsumerService;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;Component
RabbitListener(queues {duanxin.fanout.queue})
public class DuanxinConsumerServiceImpl implements DuanxinConsumerService {RabbitHandlerpublic void reviceMessage(String message) {System.err.println(Duanxin_fanout--接收到了订单信息message);}}
8.测试消费者接收信息
启动消费者项目 启动生产者项目 查看消费者项目是否监听到了生产者的信息
