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崛起于Springboot2.0.X之整合RabbitMQ企业场景开发(46)

日期:2019-08-23点击:349

1、博客涵盖点

   1.1 入门级rabbitMQ,了解五种默认的五种开发方案

   1.2 使用ssm xml方式集成rabbitMq,五种模式+死信队列方案+jdk8

   1.3 本博客项目码云地址:==》springboot+RabbitMQ+所有场景

    1、fanout:发布/订阅模式     2、rounting:路由模式 3、topic:通配符模式 4、延迟队列之使用CustomExchange方案:需要安装延迟插件 点击==》安装详情 5、延迟队列之死信队列

2、场景

引言:(九天博客实时更新修改,即便你是复制到你的网站博客,也看不到每一篇博客的优化,不如关注我哈) RabbitMQ 场景应用: 1、秒杀场景:高并发请求线程进入消息队列,根据先进先出原则,执行秒杀逻辑 2、延迟队列【两种方式 使用插件延迟 和 死信队列延迟】: 2.1:用户下订单,但是不支付,超过30分钟订单自动取消 2.2:用户注册成功之后,需要过一段时间比如一周后校验用户的使用情况,如果发现用户活跃度较低,则发送邮件或者短信来提醒用户使用。 2.3: 延迟重试。比如消费者从队列里消费消息时失败了,但是想要延迟一段时间后自动重试 3、异步操作【异步操作比同步快】: 3.1:异步记录用户操作日志:用户的登陆app,发送到消息队列,监听记录用户的登陆时间、设备,来源ip等信息... 3.2:异步发送邮件:注册或者忘记密码的时候,通常某某网站会提示发送你邮箱一个链接,请点击。 3.3:异步发送短信验证码:用户忘记密码或者使用手机验证码登陆时,可以执行异步,没必要让程序串行完成所有操作最后才能接受到验证码

3、pom文件

     springboot 2.0.X的依赖大家自己加上去吧,应该也适用于 springboot2.1.X。

<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-amqp</artifactId> </dependency> <!--工具类--> <dependency> <groupId>cn.hutool</groupId> <artifactId>hutool-all</artifactId> <version>4.6.1</version> </dependency>

4、application.properties

spring.rabbitmq.host=localhost spring.rabbitmq.port=5672 spring.rabbitmq.username=guest spring.rabbitmq.password=guest spring.rabbitmq.virtual-host=/ spring.rabbitmq.listener.simple.concurrency=3 spring.rabbitmq.listener.simple.max-concurrency=10 spring.rabbitmq.listener.simple.acknowledge-mode=manual

5、java配置类

    4.1 rabbitmq配置

import org.springframework.amqp.core.AcknowledgeMode; import org.springframework.amqp.core.AmqpAdmin; import org.springframework.amqp.rabbit.annotation.EnableRabbit; import org.springframework.amqp.rabbit.config.SimpleRabbitListenerContainerFactory; import org.springframework.amqp.rabbit.connection.CachingConnectionFactory; import org.springframework.amqp.rabbit.connection.ConnectionFactory; import org.springframework.amqp.rabbit.core.RabbitAdmin; import org.springframework.amqp.rabbit.core.RabbitTemplate; import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter; import org.springframework.amqp.support.converter.MessageConverter; import org.springframework.beans.factory.annotation.Value; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; @Configuration @EnableRabbit public class RabbbitConfig { @Value("${spring.rabbitmq.host}") public String host; @Value("${spring.rabbitmq.port}") public int port; @Value("${spring.rabbitmq.username}") public String username; @Value("${spring.rabbitmq.password}") public String password; @Value("${spring.rabbitmq.virtual-host}") public String virtual_host; @Bean public ConnectionFactory connectionFactory() { CachingConnectionFactory connectionFactory = new CachingConnectionFactory(host); connectionFactory.setUsername(username); connectionFactory.setPassword(password); connectionFactory.setPort(port); connectionFactory.setVirtualHost(virtual_host); return connectionFactory; } @Bean public AmqpAdmin amqpAdmin() { return new RabbitAdmin(connectionFactory()); } @Bean public RabbitTemplate rabbitTemplate() { return new RabbitTemplate(connectionFactory()); } //配置消费者监听的容器 @Bean public SimpleRabbitListenerContainerFactory rabbitListenerContainerFactory() { SimpleRabbitListenerContainerFactory factory = new SimpleRabbitListenerContainerFactory(); factory.setConnectionFactory(connectionFactory()); factory.setConcurrentConsumers(3); factory.setMaxConcurrentConsumers(10); factory.setAcknowledgeMode(AcknowledgeMode.MANUAL);//设置确认模式手工确认 return factory; } @Bean MessageConverter messageConverter() { return new Jackson2JsonMessageConverter(); } }

    4.2 Exchange配置

import org.springframework.amqp.core.*; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.stereotype.Component; import java.util.HashMap; import java.util.Map; /** * @Author:MuJiuTian * @Description:所有的exchange列表 * @Date: Created in 下午11:04 2019/8/19 */ @Component @Configuration public class ExchangeConfig { /** * 创建类型:fanout交换机 */ @Bean public FanoutExchange fanoutExchange() { return new FanoutExchange("fanout_exchange",true,false,null); } /** * 创建类型:direct交换机 */ @Bean public DirectExchange directExchange() { return new DirectExchange("direct_exchange",true,false,null); } /** * 创建类型:topic交换机 */ @Bean public TopicExchange topicExchange() { return new TopicExchange("IExchange",true,false,null); } /** * 创建类型:custom交换机,该交换机需要安装delay_rabbitmq插件才能运行 */ @Bean public CustomExchange customExchange() { Map<String, Object> args = new HashMap<>(); args.put("x-delayed-type", "direct"); return new CustomExchange("custom_exchange","x-delayed-message",true,false,args); } /** * 创建类型:headers交换机 */ @Bean public HeadersExchange headersExchange() { return new HeadersExchange("headers_exchange",true,false,null); } /** * 延迟:immediate交换机 */ @Bean public DirectExchange immediateExchange() { return new DirectExchange("immediate_exchange"); } /** * 延迟:dlx_delay交换机 */ @Bean public DirectExchange dlxExchange() { return new DirectExchange("dlx_delay_exchange"); } }

    4.3 Queue配置

import org.springframework.amqp.core.Queue; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.stereotype.Component; import java.util.HashMap; import java.util.Map; /** * @Author:MuJiuTian * @Description: 所有的队列统一配置 * @Date: Created in 下午11:36 2019/8/19 */ @Configuration @Component public class QueueConfig { /** * 针对fanout交换机的队列 */ @Bean public Queue fanoutQueue1() { return new Queue("fanout_queue_1"); } /** * 针对fanout交换机的队列 */ @Bean public Queue fanoutQueue2() { return new Queue("fanout_queue_2"); } /** * 针对direct交换机的队列 */ @Bean public Queue directQueue1() { return new Queue("direct_queue_1"); } /** * 针对direct交换机的队列 */ @Bean public Queue directQueue2() { return new Queue("direct_queue_2"); } /** * 针对topic交换机的队列 */ @Bean public Queue topicQueue1() { return new Queue("topic_queue_1"); } /** * 针对topic交换机的队列 */ @Bean public Queue topicQueue2() { return new Queue("topic_queue_2"); } /** * 延迟队列 */ @Bean public Queue delayQueue() { return new Queue("delay_queue"); } /** * 死信队列方式中的立即消费队列 */ @Bean public Queue immediateQueue() { return new Queue("immediate"); } /** * 死信队列方式中的延迟队列 */ @Bean public Queue dlxDelay() { Map<String,Object> map = new HashMap<>(); //map.put("x-message-ttl",6000);,延迟时间,不过我们不需要在这里配置,在service设置就好了 // x-dead-letter-exchange 声明了队列里的死信转发到的DLX名称 map.put("x-dead-letter-exchange","immediate_exchange"); // x-dead-letter-routing-key 声明了这些死信在转发时携带的 routing-key 名称。 map.put("x-dead-letter-routing-key","immediate_road"); return new Queue("dlx_delay_queue",true,false,false,map); } }

    4.4 exchange与queue关系绑定配置

import org.springframework.amqp.core.Binding; import org.springframework.amqp.core.BindingBuilder; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; /** * @Author:MuJiuTian * @Description: 所有的exchange与queue之间的routing key * @Date: Created in 下午11:39 2019/8/19 */ @Configuration public class BindingConfig { @Autowired ExchangeConfig exchange; @Autowired QueueConfig queue; @Bean public Binding bindFanout1() { return BindingBuilder.bind(queue.fanoutQueue1()).to(exchange.fanoutExchange()); } @Bean public Binding bindFanout2() { return BindingBuilder.bind(queue.fanoutQueue2()).to(exchange.fanoutExchange()); } @Bean public Binding bindDirectOrange() { return BindingBuilder.bind(queue.directQueue1()).to(exchange.directExchange()).with("orange"); } @Bean public Binding bindDirectBlack() { return BindingBuilder.bind(queue.directQueue2()).to(exchange.directExchange()).with("black"); } @Bean public Binding bindDirectGreen() { return BindingBuilder.bind(queue.directQueue2()).to(exchange.directExchange()).with("green"); } @Bean public Binding bindTopic1(){ Binding binding= BindingBuilder.bind(queue.topicQueue1()).to(exchange.topicExchange()).with("*.orange.*"); return binding; } @Bean public Binding bindTopic2(){ Binding binding= BindingBuilder.bind(queue.topicQueue2()).to(exchange.topicExchange()).with("*.*.rabbit"); return binding; } @Bean public Binding bindTopic3(){ Binding binding= BindingBuilder.bind(queue.topicQueue2()).to(exchange.topicExchange()).with("lazy.#"); return binding; } @Bean public Binding bindCustom() { return BindingBuilder.bind(queue.delayQueue()).to(exchange.customExchange()).with("delay_queue_road").noargs(); } @Bean public Binding immediate() { return BindingBuilder.bind(queue.immediateQueue()).to(exchange.immediateExchange()).with("immediate_road"); } @Bean public Binding dlxDelay() { return BindingBuilder.bind(queue.dlxDelay()).to(exchange.dlxExchange()).with("dlx_delay_road"); } }

6、实体类

import java.io.Serializable; /** * @Author:MuJiuTian * @Description: * @Date: Created in 下午6:01 2019/8/19 */ public class Mail implements Serializable { private static final long serialVersionUID = -8140693840257585779L; private String mailId; private String country; private Double weight; public Mail() { } public Mail(String mailId, String country, double weight) { this.mailId = mailId; this.country = country; this.weight = weight; } public String getMailId() { return mailId; } public void setMailId(String mailId) { this.mailId = mailId; } public String getCountry() { return country; } public void setCountry(String country) { this.country = country; } public double getWeight() { return weight; } public void setWeight(double weight) { this.weight = weight; } @Override public String toString() { return "Mail [mailId=" + mailId + ", country=" + country + ", weight=" + weight + "]"; } }

7、service层

public interface Producer { void sendMessage(String exchange, String rountingKey, Object object); void delayMessage(String exchange, String rountingKey, long time, Object object); void dlxDelayMessage(String exchange, String rountingKey, long time, Object object); void sendAndReceive(String exchange, String rountingKey, Object object); }
import com.example.rabbit.service.Producer; import org.springframework.amqp.rabbit.core.RabbitTemplate; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; /** * @Author:MuJiuTian * @Description: * @Date: Created in 下午9:52 2019/8/19 */ @Service @Transactional public class ProducerImpl implements Producer { @Autowired RabbitTemplate rabbitTemplate; /** * @Author:MuJiuTian * @Date:2019/8/20 下午4:10 * @Description: */ @Override public void sendMessage(String exchange, String rountingKey, Object object) { rabbitTemplate.convertAndSend(exchange,rountingKey,object); } /** * @Author:MuJiuTian * @Date:2019/8/20 下午4:41 * @Description: */ @Override public void delayMessage(String exchange, String rountingKey, long time, Object object) { rabbitTemplate.convertAndSend(exchange,rountingKey,object,message -> { message.getMessageProperties().setHeader("x-delay",time); return message; }); } @Override public void dlxDelayMessage(String exchange, String rountingKey, long time, Object object) { rabbitTemplate.convertAndSend(exchange, rountingKey, object, message -> { message.getMessageProperties().setExpiration(time + ""); return message; }); } /** * @Author:MuJiuTian * @Date:2019/8/20 下午4:46 * @Description:发送与消费一步完成,前提是监听器业务逻辑处理没有任何异常 */ @Override public void sendAndReceive(String exchange, String rountingKey, Object object) { rabbitTemplate.convertSendAndReceive(exchange,rountingKey,object); } }

8、controller层

import cn.hutool.core.date.DateUtil; import com.example.rabbit.entity.Mail; import com.example.rabbit.service.impl.ProducerImpl; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.bind.annotation.RestController; import java.util.Date; import java.util.Random; /** * @Author:MuJiuTian * @Description: * @Date: Created in 下午10:23 2019/8/19 */ @RestController public class RabbitController { @Autowired ProducerImpl producer; /** * @Author:MuJiuTian * @Date:2019/8/20 上午10:59 * @Description:使用fanout交换机模式测试rabbit,该模式没有routingKey */ @RequestMapping(value = "/fanout") public void fanout() { Mail mail = randomMail(); producer.sendMessage("fanout_exchange",null,mail); } /** * @Author:MuJiuTian * @Date:2019/8/20 上午11:00 * @Description:使用direct交换机模式测试rabbit,支持routingKey多路由模式 */ @RequestMapping(value = "/direct") public void direct() { Mail mail = randomMail(); producer.sendMessage("direct_exchange","",mail); } /** * @Author:MuJiuTian * @Date:2019/8/20 上午11:00 * @Description:使用topic交换机模式测试rabbit,支持routingKey通配符模式 */ @RequestMapping(value = "/topic") @ResponseBody public void topic() { Mail mail = randomMail(); //producer.sendMessage("IExchange","lazy.mm",mail); producer.sendMessage("IExchange","love.orange.hate",mail); } /** * @Author:MuJiuTian * @Date:2019/8/20 下午4:34 * @Description:延迟队列测试,毫秒为单位 */ @GetMapping(value = "/delay") @ResponseBody public void delay() { Mail mail = randomMail(); String now = DateUtil.format(new Date(),"yyyy-MM-dd HH:mm:ss"); System.out.println("延迟发送时间:"+now+"数据:"+mail.toString()); producer.delayMessage("custom_exchange","delay_queue_road",3000,mail); } /** * @Author:MuJiuTian * @Date:2019/8/21 上午10:17 * @Description:延迟队列死信队列方式 */ @GetMapping(value = "/dlxDelay") public void dlxDelay() { Mail mail = randomMail(); String now = DateUtil.format(new Date(),"yyyy-MM-dd HH:mm:ss"); System.out.println("延迟发送时间:"+now+"数据:"+mail.toString()); producer.dlxDelayMessage("dlx_delay_exchange","dlx_delay_road",3000,mail); } /** * 随机创建一个Mail实体对象,供接口测试 */ public static Mail randomMail() { Mail mail = new Mail(); mail.setMailId(new Random().nextInt(100)+""); mail.setCountry("China"); mail.setWeight(new Random().nextDouble()); return mail; } }

9、监听器

import cn.hutool.core.date.DateUtil; import com.example.rabbit.entity.Mail; import com.rabbitmq.client.Channel; import org.springframework.amqp.rabbit.annotation.RabbitHandler; import org.springframework.amqp.rabbit.annotation.RabbitListener; import org.springframework.amqp.rabbit.core.RabbitTemplate; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.messaging.handler.annotation.Header; import org.springframework.messaging.handler.annotation.Headers; import org.springframework.messaging.handler.annotation.Payload; import org.springframework.stereotype.Component; import java.io.IOException; import java.text.DateFormat; import java.util.Date; import java.util.Map; /** * @Author:MuJiuTian * @Description: Message包含 @Payload Object obj和@Headers Map<String,Object> heads两者 * @Payload @Headers @Header(name = "amqp_deliveryTag") @RabbitListener @RabbitHandler 总共5个注解的使用 * @Date: Created in 下午10:06 2019/8/19 */ @Component public class MyListener { @Autowired RabbitTemplate rabbitTemplate; @RabbitListener(queues = "fanout_queue_1") public void fanoutQueue1(Mail mail) throws IOException { System.out.println("fanout_queue_1队列取出消息"+mail.toString()); } @RabbitListener(queues = "fanout_queue_2") public void fanoutQueue2(Mail mail) throws IOException { System.out.println("fanout_queue_2队列取出消息"+mail.toString()); } @RabbitListener(queues = "direct_queue_1") public void directQueue1(Mail mail) { System.out.println("direct_queue_1队列取出消息"+mail.toString()); } @RabbitListener(queues = "direct_queue_2") public void directQueue2(Mail mail) { System.out.println("direct_queue_2队列取出消息"+mail.toString()); } @RabbitListener(queues = "topic_queue_1") public void topicQueue1(Mail mail) { System.out.println("从topic_queue_1取出消息"+mail.toString()); } @RabbitListener(queues = "topic_queue_2") public void topicQueue2(@Payload Mail mail, @Headers Map<String,Object> heads,Channel channel) throws IOException { System.out.println("到达监听器,准备处理RabbitMQ业务逻辑,从topic_queue_2取出消息=="+mail.toString()); //第一步:业务逻辑处理,如活动秒杀 //第二部:业务逻辑处理成功之后,消费掉消息 channel.basicAck(Long.valueOf(heads.get("amqp_deliveryTag").toString()),true); } @RabbitListener(queues = "delay_queue") public void delay(@Payload Mail mail, @Header(name = "amqp_deliveryTag") long deliveryTag,Channel channel) throws IOException { System.out.println("延迟队列接受时间:"+ DateUtil.format(new Date(),"yyyy-MM-dd HH:mm:ss")); //第一步:业务逻辑处理,如下订单内30分钟不支付情况下,自动取消订单,这里就不写了,主要体现rabbitmq的延迟功能 //第二部:业务逻辑处理成功之后,消费掉消息 channel.basicAck(deliveryTag,false); } @RabbitListener(queues = "immediate") @RabbitHandler public void immediate(@Payload Mail mail) { System.out.println("此刻时间是:"+ DateUtil.format(new Date(), DateFormat.getDateTimeInstance())+"要处理的数据="+mail); } }

10、项目启动

    项目启动后,打开localhost:15672,里面的exchange和queue会自动配置好,不过还是要检查一下exchange和queue有没有绑定关系好,都可以了进行测试,如下:

    10.1 topic测试:http://localhost:8080/topic

    10.2 延迟队列,使用CustomExchange测试:http://localhost:8080/delay

    10.3 延迟队列,方式二,使用死信队列方式测试:http://localhost:8080/dlxDelay

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原文链接:https://my.oschina.net/mdxlcj/blog/3096549
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