SpringBoot整合RabbitMQ
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首先是Erlang下载和环境配置以及RabbitMQ的下载
在这里我想吐槽一下Erlang的官网,为啥你这么特,下载个东西这么墨迹
百度网盘:https://pan.baidu.com/s/1f2N40EjJOK9Vvdkz3EPEsQ
提取码:5fia
相信我,百度网盘虽然垃圾,但是绝对比erlang网站强不少
环境变量
博客链接:https://blog.csdn.net/zhm3023/article/details/82217222
在这里感谢这位大佬的博客给我提供了很多帮助,(合十)
maven依赖
1 <!--rabbitmq--> 2 <dependency> 3 <groupId>org.springframework.boot</groupId> 4 <artifactId>spring-boot-starter-amqp</artifactId> 5 </dependency>
config
1 package com.zdj.config; 2 3 4 5 6 7 import org.springframework.amqp.core.AmqpAdmin; 8 import org.springframework.amqp.rabbit.config.SimpleRabbitListenerContainerFactory; 9 import org.springframework.amqp.rabbit.connection.CachingConnectionFactory; 10 import org.springframework.amqp.rabbit.connection.ConnectionFactory; 11 import org.springframework.amqp.rabbit.core.RabbitAdmin; 12 import org.springframework.amqp.rabbit.core.RabbitTemplate; 13 import org.springframework.context.annotation.Bean; 14 import org.springframework.context.annotation.Configuration; 15 16 @Configuration 17 public class RabbitMqConfig { 18 @Bean 19 public ConnectionFactory connectionFactory() { 20 //地址 21 CachingConnectionFactory connectionFactory = new CachingConnectionFactory("127.0.0.1"); 22 //端口 23 connectionFactory.setPort(5672); 24 //default username guest 25 connectionFactory.setUsername("guest"); 26 //default password guest 27 connectionFactory.setPassword("guest"); 28 // vhost can be null 29 //connectionFactory.setVirtualHost("虚拟主机名"); 30 return connectionFactory; 31 } 32 //amqp 管理 33 @Bean 34 public AmqpAdmin amqpAdmin(){ 35 return new RabbitAdmin(connectionFactory()); 36 } 37 //rabbit模板 38 @Bean 39 public RabbitTemplate rabbitTemplate(){ 40 return new RabbitTemplate(connectionFactory()); 41 } 42 @Bean 43 public SimpleRabbitListenerContainerFactory rabbitListenerContainerFactory(){ 44 SimpleRabbitListenerContainerFactory factory = new SimpleRabbitListenerContainerFactory(); 45 factory.setConnectionFactory(connectionFactory()); 46 factory.setConcurrentConsumers(3); 47 factory.setMaxConcurrentConsumers(10); 48 return factory; 49 } 50 //定义exchange 51 public static final String EXCHANGE_A = "my-mq-exchange_1"; 52 public static final String EXCHANGE_B = "my-mq-exchange_2"; 53 public static final String EXCHANGE_C = "my-mq-exchange_3"; 54 //queue 55 public static final String QUEUE_A = "QUEUE_1"; 56 public static final String QUEUE_B = "QUEUE_2"; 57 public static final String QUEUE_C = "QUEUE_3"; 58 //routingKey 59 public static final String ROUTINGKEY_A = "spring-boot-routingKey_1"; 60 public static final String ROUTINGKEY_B = "spring-boot-routingKey_2"; 61 public static final String ROUTINGKEY_C = "spring-boot-routingKey_3"; 62 }
QueueConfig
package com.zdj.config; import org.springframework.amqp.core.Queue; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; /** * create three queues */ @Configuration public class RabbitMqQueueConfig { @Bean(value = "queue1") public Queue queue_A(){ return new Queue(RabbitMqConfig.QUEUE_A); } @Bean(value = "queue2") public Queue queue_B(){ return new Queue(RabbitMqConfig.QUEUE_B); } @Bean(value = "queue3") public Queue queue_C(){ return new Queue(RabbitMqConfig.QUEUE_C); } }
DirectExchangeConfig
1 package com.zdj.config; 2 3 import org.springframework.amqp.core.Binding; 4 import org.springframework.amqp.core.BindingBuilder; 5 import org.springframework.amqp.core.DirectExchange; 6 import org.springframework.amqp.core.Queue; 7 import org.springframework.beans.factory.annotation.Qualifier; 8 import org.springframework.context.annotation.Bean; 9 import org.springframework.context.annotation.Configuration; 10 11 /** 12 * @author fqg 13 * @csdn 14 * @date 2020/6/17 15 * 16 * directExchange 直连交换机 17 */ 18 19 @Configuration 20 public class DirectExchangeConfig { 21 //create directExchange 22 @Bean(value = "exchange_A") 23 public DirectExchange directExchange(){ 24 DirectExchange directExchange = new DirectExchange(RabbitMqConfig.EXCHANGE_A); 25 return directExchange; 26 } 27 //connect exchange_A with queue_A 28 @Bean(value = "exchange_AtoQueue_A") 29 public Binding exchange_AtoQueue_A(@Qualifier("queue1") Queue queue){ 30 return BindingBuilder.bind(queue).to(directExchange()).with(RabbitMqConfig.ROUTINGKEY_A); 31 } 32 //connect exchange_A with queue_B 33 @Bean(value = "exchange_AtoQueue_B") 34 public Binding exchange_AtoQueue_B(@Qualifier("queue2") Queue queue){ 35 return BindingBuilder.bind(queue).to(directExchange()).with(RabbitMqConfig.ROUTINGKEY_B); 36 } 37 }
FanoutExchangeConfig
package com.zdj.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.beans.factory.annotation.Qualifier; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; @Configuration public class FanoutExchangeConfig { @Bean(value = "exchange2") public FanoutExchange fanoutExchange(){ FanoutExchange fanoutExchange = new FanoutExchange("exchange2"); return fanoutExchange; } @Bean(value = "exchange2toQueue3") public Binding exchange2toQueue3(@Qualifier("queue3") Queue queue){ return BindingBuilder.bind(queue).to(fanoutExchange()); } }
Producer
package com.zdj.producer; import com.zdj.config.RabbitMqConfig; import org.springframework.amqp.rabbit.connection.CorrelationData; import org.springframework.amqp.rabbit.core.RabbitTemplate; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; import java.util.UUID; @Component public class MsgProducer implements RabbitTemplate.ConfirmCallback { @Autowired private RabbitTemplate rabbitTemplate; public void sendMsg(String content){ CorrelationData correlationId = new CorrelationData(UUID.randomUUID().toString()); //put content to queue according to the routingKey_A rabbitTemplate.convertAndSend(RabbitMqConfig.EXCHANGE_A, RabbitMqConfig.ROUTINGKEY_A, content, correlationId); } /** * callback * @param correlationData * @param b * @param s */ @Override public void confirm(CorrelationData correlationData, boolean b, String s) { System.out.println("callbackId" + correlationData); if(b){ System.out.println("success consume"); }else{ System.out.println("fail consume"); } } }
Listener
package com.zdj.listener; import com.zdj.config.RabbitMqConfig; import org.springframework.amqp.rabbit.annotation.RabbitHandler; import org.springframework.amqp.rabbit.annotation.RabbitListener; import org.springframework.stereotype.Component; @Component @RabbitListener(queues = RabbitMqConfig.QUEUE_A) public class Queue1Listener1 { @RabbitHandler public void process(String content){ System.out.println("cpu1监听queue1:" + content); } }
package com.zdj.listener; import com.zdj.config.RabbitMqConfig; import org.springframework.amqp.rabbit.annotation.RabbitHandler; import org.springframework.amqp.rabbit.annotation.RabbitListener; import org.springframework.stereotype.Component; @Component @RabbitListener(queues = RabbitMqConfig.QUEUE_A) public class Queue1Listener2 { @RabbitHandler public void process(String content){ System.out.println("cpu2监听queue1" + content); } }
Test
package com.zdj.test; import com.zdj.TestZdjMainApplication; import com.zdj.producer.MsgProducer; 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(classes = TestZdjMainApplication.class) public class Test{ @Autowired private MsgProducer msgProducer; @Test public void set(){ for(int i = 0; i < 10; i++){ msgProducer.sendMsg("第" + i + "条"); } } }
问题:
1.RabbitMQ的几种Exchange消息调度策略
fanout,direct,Topic(*代表一个单词,#代表多个单词),headers(键值对)
2.使用情况
我最开始是想在前端和controller中间添加MQ,用作削峰和增加并发量,但是我想到的MQ不能实现实时的返回一些东西,所以没有实现转而实现了日志系统,定义了两个监听器监听队列,当打印出日志的时候只进行入队列操作,存储日志交给监听器来做。
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