springboot集成rabbitmq(实战)

RabbitMQ简介 RabbitMQ使用Erlang语言开发的开源消息队列系统,基于AMQP协议来实现(AMQP的主要特征是面向消息、队列、路由、可靠性、安全)。支持多种客户端,如:Python、Ruby、.NET、Java、JMS、C、PHP、ActionScript、XMPP、STOMP等,支持AJAX。用于在分布式系统中存储转发消息,在易用性、扩展性、高可用性等方面表现很出色。

相关概念

消息队列通常有三个概念:发送消息(生产者)、队列、接收消息(消费者)。RabbitMQ在这个基本概念之上,多做了一层抽象,在发送消息和队列之间,加入了交换机。这样发送消息和队列就没有直接关系,而是通过交换机来做转发,交换机会根据分发策略把消息转给队列。

图一(MQ基本模型):

P为发送消息(生产者)、Q为消息队列、C为接收消息(消费者)

图二(RabbitMQ模型):

P为发送消息(生产者)、X为交换机、Q为消息队列、C为接收消息(消费者)

                                              图一                             图二

RabbitMQ比较重要的几个概念:

虚拟主机:RabbitMQ支持权限控制,但是最小控制粒度为虚拟主机。一个虚拟主机可以包含多个交换机、队列、绑定。

交换机:RabbitMQ分发器,根据不同的策略将消息分发到相关的队列。

队列:缓存消息的容器。

绑定:设置交换机与队列的关系。

是时候表演真正的技术了

为了方便演示,我们分别创建两个springboot项目:

spring-boot-rabbitmq-producer(生产者)

spring-boot-rabbitmq-consumer(消费者)

注意:实际项目中,一个系统可能即为生产者、又为消费者。

1.添加基础配置

生产者、消费者基础配置相同。

1.1)集成rabbitmq,添加maven依赖

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
    </dependency>
    
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-amqp</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

 1.2)添加rabbitmq服务配置(application.properties)

#rabbitmq相关配置
spring.rabbitmq.host=192.168.15.131
spring.rabbitmq.port=5672
spring.rabbitmq.username=admin
spring.rabbitmq.password=123456

2.交换机——DirectExchange

DirectExchange是RabbitMQ的默认交换机,直接使用routingKey匹配队列。

2.1)添加一个配置类(消费者)

配置一个routingKey为notify.payment的消息队列

@Configuration
public class DirectConfig {
	@Bean
	public Queue paymentNotifyQueue() {
		return new Queue("notify.payment");
	}
}

2.2)添加一个消息监听类(消费者)

监听routingKey为notify.payment的队列消息

@Component
@RabbitListener(queues = "notify.payment")
public class PaymentNotifyReceive {
	@RabbitHandler
	public void receive(String msg) {
		LogUtil.info("notify.payment receive message: "+msg);
	}
}

2.3)添加一个消息发送类(生产者)

将消息发送至默认的交换机且routingKey为notify.payment

@Component
public class PaymentNotifySender {
	@Autowired
	private AmqpTemplate rabbitTemplate;
	
	public void sender(String msg){
		LogUtil.info("notify.payment send message: "+msg);
		rabbitTemplate.convertAndSend("notify.payment", msg);
	}
}

2.4)添加一个测试类(生产者)

@RunWith(SpringRunner.class)
@SpringBootTest
public class PaymentNotifySenderTests {
	@Autowired
	private PaymentNotifySender sender;
	
	@Test
	public void test_sender() {
		sender.sender("支付订单号:"+System.currentTimeMillis());
	}
}

2.5)执行test_sender()方法

生产者日志:

2018-05-14 16:28:53.264  INFO 10624 --- [           main] c.l.sender.PaymentNotifySenderTests      : Starting PaymentNotifySenderTests on LAPTOP-1DF7S904 with PID 10624 (started by lianjinsoft...
2018-05-14 16:28:53.265  INFO 10624 --- [           main] c.l.sender.PaymentNotifySenderTests      : No active profile set, falling back to default profiles: default
2018-05-14 16:28:53.305  INFO 10624 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@...
2018-05-14 16:28:54.133  INFO 10624 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.amqp.rabbit.annotation.RabbitBootstrapConfiguration' of type ...
2018-05-14 16:28:55.104  INFO 10624 --- [           main] o.s.c.support.DefaultLifecycleProcessor  : Starting beans in phase 2147483647
2018-05-14 16:28:55.114  INFO 10624 --- [           main] c.l.sender.PaymentNotifySenderTests      : Started PaymentNotifySenderTests in 2.246 seconds (JVM running for 3.199)
2018-05-14 16:28:55.343  INFO 10624 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:1526286535342
2018-05-14 16:28:55.383  INFO 10624 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Attempting to connect to: [192.168.15.131:5672]
2018-05-14 16:28:55.444  INFO 10624 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Created new connection: rabbitConnectionFactory#38be305c:0/SimpleConnection@71984c3 ...
2018-05-14 16:28:55.483  INFO 10624 --- [       Thread-2] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@7eac9008: ...
2018-05-14 16:28:55.485  INFO 10624 --- [       Thread-2] o.s.c.support.DefaultLifecycleProcessor  : Stopping beans in phase 2147483647

消费者日志:

2018-05-14 16:28:55.490  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:1526286535342

分析日志:

从生产者日志第7行可以看出,消息已经成功发送。

从消费者日志可以看出,消息已经成功接收。

3.交换机——TopicExchange

TopicExchange是按规则转发消息,是交换机中最灵活的一个。也是最常用的一个。

3.1)添加一个配置类(消费者)

配置一个routingKey为api.core的消息队列并绑定在coreExchange交换机上(交换机的匹配规则为api.core.*)

配置一个routingKey为api.payment的消息队列并绑定在paymentExchange交换机上(交换机的匹配规则为api.payment.#)

@Configuration
public class TopicConfig {
	@Bean
	public Queue coreQueue() {
		return new Queue("api.core");
	}
	
	@Bean
	public Queue paymentQueue() {
		return new Queue("api.payment");
	}
	
	@Bean
	public TopicExchange coreExchange() {
		return new TopicExchange("coreExchange");
	}
	
	@Bean
	public TopicExchange paymentExchange() {
		return new TopicExchange("paymentExchange");
	}
	
	@Bean
	public Binding bindingCoreExchange(Queue coreQueue, TopicExchange coreExchange) {
		return BindingBuilder.bind(coreQueue).to(coreExchange).with("api.core.*");
	}
	
	@Bean
	public Binding bindingPaymentExchange(Queue paymentQueue, TopicExchange paymentExchange) {
		return BindingBuilder.bind(paymentQueue).to(paymentExchange).with("api.payment.#");
	}
}

3.2)添加两个消息监听类(消费者)

监听routingKey为api.core的队列消息

@Component
public class ApiCoreReceive {
	@RabbitHandler
	@RabbitListener(queues = "api.core")
	public void user(String msg) {
		LogUtil.info("api.core receive message: "+msg);
	}
}

监听routingKey为api.payment的队列消息

@Component
public class ApiPaymentReceive {
	@RabbitHandler
	@RabbitListener(queues = "api.payment")
	public void order(String msg) {
		LogUtil.info("api.payment.order receive message: "+msg);
	}
}

3.3)添加两个消息发送类(生产者)

添加一个user()方法,发送消息至coreExchange交换机且routingKey为api.core.user

添加一个userQuery()方法,发送消息至coreExchange交换机且routingKey为api.core.user.query

@Component
public class ApiCoreSender {
	@Autowired
	private AmqpTemplate rabbitTemplate;
	
	public void user(String msg){
		LogUtil.info("api.core.user send message: "+msg);
		rabbitTemplate.convertAndSend("coreExchange", "api.core.user", msg);
	}
	
	public void userQuery(String msg){
		LogUtil.info("api.core.user.query send message: "+msg);
		rabbitTemplate.convertAndSend("coreExchange", "api.core.user.query", msg);
	}
}

添加一个order()方法,发送消息至paymentExchange交换机且routingKey为api.payment.order

添加一个orderQuery()方法,发送消息至paymentExchange交换机且routingKey为api.payment.order.query

添加一个orderDetailQuery()方法,发送消息至paymentExchange交换机且routingKey为api.payment.order.detail.query

@Component
public class ApiPaymentSender {
	@Autowired
	private AmqpTemplate rabbitTemplate;
	
	public void order(String msg){
		LogUtil.info("api.payment.order send message: "+msg);
		rabbitTemplate.convertAndSend("paymentExchange", "api.payment.order", msg);
	}
	
	public void orderQuery(String msg){
		LogUtil.info("api.payment.order.query send message: "+msg);
		rabbitTemplate.convertAndSend("paymentExchange", "api.payment.order.query", msg);
	}
	
	public void orderDetailQuery(String msg){
		LogUtil.info("api.payment.order.detail.query send message: "+msg);
		rabbitTemplate.convertAndSend("paymentExchange", "api.payment.order.detail.query", msg);
	}
}

3.4)添加两个测试类(生产者)

测试ApiCoreSender类中的相关方法

@RunWith(SpringRunner.class)
@SpringBootTest
public class ApiCoreSenderTests {
	@Autowired
	private ApiCoreSender sender;
	
	@Test
	public void test_user() {
		sender.user("用户管理!");
	}
	
	@Test
	public void test_userQuery() {
		sender.userQuery("查询用户信息!");
	}
}

测试ApiPaymentSender类中的相关方法

@RunWith(SpringRunner.class)
@SpringBootTest
public class ApiPaymentSenderTests {
	@Autowired
	private ApiPaymentSender sender;
	
	@Test
	public void test_order() {
		sender.order("订单管理!");
	}
	
	@Test
	public void test_orderQuery() {
		sender.orderQuery("查询订单信息!");
	}
	
	@Test
	public void test_orderDetailQuery() {
		sender.orderDetailQuery("查询订单详情信息!");
	}
}

3.5)验证

3.5.1)执行ApiCoreSenderTests测试类

生产者日志:

2018-05-14 16:30:05.804  INFO 7340 --- [           main] c.lianjinsoft.sender.ApiCoreSenderTests  : Starting ApiCoreSenderTests on LAPTOP-1DF7S904 with PID 7340 (started by lianjinsoft in ...
2018-05-14 16:30:05.805  INFO 7340 --- [           main] c.lianjinsoft.sender.ApiCoreSenderTests  : No active profile set, falling back to default profiles: default
2018-05-14 16:30:05.851  INFO 7340 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@1e800aaa: ...
2018-05-14 16:30:06.553  INFO 7340 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.amqp.rabbit.annotation.RabbitBootstrapConfiguration' of type ...
2018-05-14 16:30:07.375  INFO 7340 --- [           main] o.s.c.support.DefaultLifecycleProcessor  : Starting beans in phase 2147483647
2018-05-14 16:30:07.385  INFO 7340 --- [           main] c.lianjinsoft.sender.ApiCoreSenderTests  : Started ApiCoreSenderTests in 1.922 seconds (JVM running for 2.846)
2018-05-14 16:30:07.431  INFO 7340 --- [           main] com.lianjinsoft.util.LogUtil             : api.core.user send message: 用户管理!
2018-05-14 16:30:07.463  INFO 7340 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Attempting to connect to: [192.168.15.131:5672]
2018-05-14 16:30:07.578  INFO 7340 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Created new connection: rabbitConnectionFactory#56ace400:0/SimpleConnection@773cbf4f...
2018-05-14 16:30:07.647  INFO 7340 --- [           main] com.lianjinsoft.util.LogUtil             : api.core.user.query send message: 查询用户信息!
2018-05-14 16:30:07.716  INFO 7340 --- [       Thread-2] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@1e800aaa: ...
2018-05-14 16:30:07.728  INFO 7340 --- [       Thread-2] o.s.c.support.DefaultLifecycleProcessor  : Stopping beans in phase 2147483647

消费者日志:

2018-05-14 16:30:07.609  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : api.core receive message: 用户管理!

分析日志:

从生产者日志第7、10行可以看出,api.core.user和api.core.user.query消息均已发送成功。

从消费者日志可以看出,只有api.core.user发送的消息被收到了。

问题:

为什么api.core.user.query发送的消息没有被api.core队列监听消费?

答:因为在TopicConfig配置类中,我们对api.core队列绑定的交换机规则是api.core.*,而通配符“*”只能向后多匹配一层路径。

3.5.2)执行ApiPaymentSenderTests测试类

生产者日志:

2018-05-14 16:31:12.823  INFO 6460 --- [           main] c.l.sender.ApiPaymentSenderTests         : Starting ApiPaymentSenderTests on LAPTOP-1DF7S904 with PID 6460 (started by lianjinsoft in ...
2018-05-14 16:31:12.823  INFO 6460 --- [           main] c.l.sender.ApiPaymentSenderTests         : No active profile set, falling back to default profiles: default
2018-05-14 16:31:12.857  INFO 6460 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@1e800aaa: ...
2018-05-14 16:31:13.718  INFO 6460 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.amqp.rabbit.annotation.RabbitBootstrapConfiguration' of type ...
2018-05-14 16:31:14.530  INFO 6460 --- [           main] o.s.c.support.DefaultLifecycleProcessor  : Starting beans in phase 2147483647
2018-05-14 16:31:14.539  INFO 6460 --- [           main] c.l.sender.ApiPaymentSenderTests         : Started ApiPaymentSenderTests in 2.05 seconds (JVM running for 2.945)
2018-05-14 16:31:14.592  INFO 6460 --- [           main] com.lianjinsoft.util.LogUtil             : api.payment.order.query send message: 查询订单信息!
2018-05-14 16:31:14.638  INFO 6460 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Attempting to connect to: [192.168.15.131:5672]
2018-05-14 16:31:14.762  INFO 6460 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Created new connection: rabbitConnectionFactory#47404bea:0/SimpleConnection@6b54655f ...
2018-05-14 16:31:14.819  INFO 6460 --- [           main] com.lianjinsoft.util.LogUtil             : api.payment.order.detail.query send message: 查询订单详情信息!
2018-05-14 16:31:14.825  INFO 6460 --- [           main] com.lianjinsoft.util.LogUtil             : api.payment.order send message: 订单管理!
2018-05-14 16:31:14.836  INFO 6460 --- [       Thread-2] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@1e800aaa: ...
2018-05-14 16:31:14.840  INFO 6460 --- [       Thread-2] o.s.c.support.DefaultLifecycleProcessor  : Stopping beans in phase 2147483647

消费者日志:

2018-05-14 16:31:14.809  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : api.payment.order receive message: 查询订单信息!
2018-05-14 16:31:14.821  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : api.payment.order receive message: 查询订单详情信息!
2018-05-14 16:31:14.829  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : api.payment.order receive message: 订单管理!

分析日志:

从生产者日志第7、10、11行可以看出,api.payment.order.query、api.payment.order.detail.query、api.payment.order消息均发送成功。

从消费者日志可以看出,api.payment.order队列监听到了所有消息并均处理成功了。

知识点:

TopicExchange交换机支持使用通配符*、#

*号只能向后多匹配一层路径。

#号可以向后匹配多层路径。

4.交换机——HeadersExchange

HeadersExchange交换机是根据请求消息中设置的header attribute参数类型来匹配的(和routingKey没有关系)。

4.1)添加一个配置类(消费者)

配置一个routingKey为credit.bank的消息队列并绑定在creditBankExchange交换机上

配置一个routingKey为credit.finance的消息队列并绑定在creditFinanceExchange交换机上

@Configuration
public class HeadersConfig {
	@Bean
	public Queue creditBankQueue() {
		return new Queue("credit.bank");
	}
	
	@Bean
	public Queue creditFinanceQueue() {
		return new Queue("credit.finance");
	}
	
	@Bean
	public HeadersExchange creditBankExchange() {
		 return new HeadersExchange("creditBankExchange");
	}
	
	@Bean
	public HeadersExchange creditFinanceExchange() {
		 return new HeadersExchange("creditFinanceExchange");
	}
	
	@Bean
	public Binding bindingCreditAExchange(Queue creditBankQueue, HeadersExchange creditBankExchange) {
		Map<String,Object> headerValues = new HashMap<>();
		headerValues.put("type", "cash");
		headerValues.put("aging", "fast");
		return BindingBuilder.bind(creditBankQueue).to(creditBankExchange).whereAll(headerValues).match();
	}
	
	@Bean
	public Binding bindingCreditBExchange(Queue creditFinanceQueue, HeadersExchange creditFinanceExchange) {
		Map<String,Object> headerValues = new HashMap<>();
		headerValues.put("type", "cash");
		headerValues.put("aging", "fast");
		return BindingBuilder.bind(creditFinanceQueue).to(creditFinanceExchange).whereAny(headerValues).match();
	}
}

4.2)添加一个消息监听类(消费者)

添加creditBank()方法,监听routingKey为credit.bank的队列消息

添加creditFinance()方法,监听routingKey为credit.finance的队列消息

@Component
public class ApiCreditReceive {
	@RabbitHandler
	@RabbitListener(queues = "credit.bank")
	public void creditBank(String msg) {
		LogUtil.info("credit.bank receive message: "+msg);
	}
	
	@RabbitHandler
	@RabbitListener(queues = "credit.finance")
	public void creditFinance(String msg) {
		LogUtil.info("credit.finance receive message: "+msg);
	}
}

4.3)添加一个消息发送类(生产者)

添加一个creditBank()方法,发送消息至creditBankExchange交换机且routingKey为credit.bank

添加一个creditFinance()方法,发送消息至creditFinanceExchange交换机且routingKey为credit.finance

@Component
public class ApiCreditSender {
	@Autowired
	private AmqpTemplate rabbitTemplate;
	
	public void creditBank(Map<String, Object> head, String msg){
		LogUtil.info("credit.bank send message: "+msg);
		rabbitTemplate.convertAndSend("creditBankExchange", "credit.bank", getMessage(head, msg));
	}
	
	public void creditFinance(Map<String, Object> head, String msg){
		LogUtil.info("credit.finance send message: "+msg);
		rabbitTemplate.convertAndSend("creditFinanceExchange", "credit.finance", getMessage(head, msg));
	}
}

4.4)添加一个测试类(生产者)

@RunWith(SpringRunner.class)
@SpringBootTest
public class ApiCreditSenderTests {
	@Autowired
	private ApiCreditSender sender;
	
	@Test
	public void test_creditBank_type() {
		Map<String,Object> head = new HashMap<>();
		head.put("type", "cash");
		sender.creditBank(head, "银行授信(部分匹配)");
	}
	
	@Test
	public void test_creditBank_all() {
		Map<String,Object> head = new HashMap<>();
		head.put("type", "cash");
		head.put("aging", "fast");
		sender.creditBank(head, "银行授信(全部匹配)");
	}
	
	@Test
	public void test_creditFinance_type() {
		Map<String,Object> head = new HashMap<>();
		head.put("type", "cash");
		sender.creditFinance(head, "金融公司授信(部分匹配)");
	}
	
	@Test
	public void test_creditFinance_all() {
		Map<String,Object> head = new HashMap<>();
		head.put("type", "cash");
		head.put("aging", "fast");
		sender.creditFinance(head, "金融公司授信(全部匹配)");
	}
}

4.5)执行ApiCreditSenderTests测试类

生产者日志:

2018-05-14 16:32:18.954  INFO 5204 --- [           main] c.l.sender.ApiCreditSenderTests          : Starting ApiCreditSenderTests on LAPTOP-1DF7S904 with PID 5204 (started by lianjinsoft in...
2018-05-14 16:32:18.964  INFO 5204 --- [           main] c.l.sender.ApiCreditSenderTests          : No active profile set, falling back to default profiles: default
2018-05-14 16:32:19.007  INFO 5204 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@1e800aaa: ...
2018-05-14 16:32:19.609  INFO 5204 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.amqp.rabbit.annotation.RabbitBootstrapConfiguration' of type ...
2018-05-14 16:32:20.437  INFO 5204 --- [           main] o.s.c.support.DefaultLifecycleProcessor  : Starting beans in phase 2147483647
2018-05-14 16:32:20.446  INFO 5204 --- [           main] c.l.sender.ApiCreditSenderTests          : Started ApiCreditSenderTests in 1.839 seconds (JVM running for 2.759)
2018-05-14 16:32:20.566  INFO 5204 --- [           main] com.lianjinsoft.util.LogUtil             : credit.bank send message: 银行授信(部分匹配)
2018-05-14 16:32:20.574  INFO 5204 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Attempting to connect to: [192.168.15.131:5672]
2018-05-14 16:32:20.666  INFO 5204 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Created new connection: rabbitConnectionFactory#56ace400:0/SimpleConnection@773cbf4f...
2018-05-14 16:32:21.064  INFO 5204 --- [           main] com.lianjinsoft.util.LogUtil             : credit.finance send message: 金融公司授信(全部匹配)
2018-05-14 16:32:21.070  INFO 5204 --- [           main] com.lianjinsoft.util.LogUtil             : credit.bank send message: 银行授信(全部匹配)
2018-05-14 16:32:21.077  INFO 5204 --- [           main] com.lianjinsoft.util.LogUtil             : credit.finance send message: 金融公司授信(部分匹配)
2018-05-14 16:32:21.109  INFO 5204 --- [       Thread-2] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@1e800aaa: ...
2018-05-14 16:32:21.114  INFO 5204 --- [       Thread-2] o.s.c.support.DefaultLifecycleProcessor  : Stopping beans in phase 2147483647

消费者日志:

2018-05-14 16:32:21.093  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : credit.finance receive message: 金融公司授信(全部匹配)
2018-05-14 16:32:21.094  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : credit.bank receive message: 银行授信(全部匹配)
2018-05-14 16:32:21.097  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : credit.finance receive message: 金融公司授信(部分匹配)

分析日志:

通过生产者日志第7、10、11、12可以看出,测试的4个方法均已成功发送消息。

通过消费者日志可以看出,credit.bank监听的队列有一条消息没有接收到。

问题:

为什么ApiCreditSenderTests.test_creditBank_type()发送的消息,没有被处理?

答:因为在HeadersConfig配置类中,creditBankExchange交换机的匹配规则是完全匹配,即header attribute参数必须完成一致。

5.交换机——FanoutExchange

FanoutExchange交换机是转发消息到所有绑定队列(广播模式,和routingKey没有关系)。

5.1)添加一个配置类(消费者)

配置一个routingKey为api.report.payment的消息队列并绑定在reportExchange交换机上

配置一个routingKey为api.report.refund的消息队列并绑定在reportExchange交换机上

@Configuration
public class FanoutConfig {
	@Bean
	public Queue reportPaymentQueue() {
		return new Queue("api.report.payment");
	}
	
	@Bean
	public Queue reportRefundQueue() {
		return new Queue("api.report.refund");
	}
	
	@Bean
	public FanoutExchange reportExchange() {
		 return new FanoutExchange("reportExchange");
	}
	
	@Bean
	public Binding bindingReportPaymentExchange(Queue reportPaymentQueue, FanoutExchange reportExchange) {
		return BindingBuilder.bind(reportPaymentQueue).to(reportExchange);
	}
	
	@Bean
	public Binding bindingReportRefundExchange(Queue reportRefundQueue, FanoutExchange reportExchange) {
		return BindingBuilder.bind(reportRefundQueue).to(reportExchange);
	}
}

5.2)添加一个消息监听类(消费者)

添加payment()方法,监听routingKey为api.report.payment的队列消息

添加refund()方法,监听routingKey为api.report.refund的队列消息

@Component
public class ApiReportReceive {
	@RabbitHandler
	@RabbitListener(queues = "api.report.payment")
	public void payment(String msg) {
		LogUtil.info("api.report.payment receive message: "+msg);
	}
	
	@RabbitHandler
	@RabbitListener(queues = "api.report.refund")
	public void refund(String msg) {
		LogUtil.info("api.report.refund receive message: "+msg);
	}
}

5.3)添加一个消息发送类(生产者)

添加一个generateReports()方法,发送消息至reportExchange交换机

@Component
public class ApiReportSender {
	@Autowired
	private AmqpTemplate rabbitTemplate;
	
	public void generateReports(String msg){
		LogUtil.info("api.generate.reports send message: "+msg);
		rabbitTemplate.convertAndSend("reportExchange", "api.generate.reports", msg);
	}
}

5.4)添加一个测试类(生产者)

@RunWith(SpringRunner.class)
@SpringBootTest
public class ApiReportSenderTests {
	@Autowired
	private ApiReportSender sender;
	
	@Test
	public void test_generateReports() {
		sender.generateReports("开始生成报表!");
	}
}

5.5)执行ApiReportSenderTests测试类

生产者日志:

2018-05-14 16:33:41.453  INFO 14356 --- [           main] c.l.sender.ApiReportSenderTests          : Starting ApiReportSenderTests on LAPTOP-1DF7S904 with PID 14356 (started by lianjinsoft in ...
2018-05-14 16:33:41.454  INFO 14356 --- [           main] c.l.sender.ApiReportSenderTests          : No active profile set, falling back to default profiles: default
2018-05-14 16:33:41.490  INFO 14356 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@1e800aaa: ...
2018-05-14 16:33:42.094  INFO 14356 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.amqp.rabbit.annotation.RabbitBootstrapConfiguration' of type...
2018-05-14 16:33:42.960  INFO 14356 --- [           main] o.s.c.support.DefaultLifecycleProcessor  : Starting beans in phase 2147483647
2018-05-14 16:33:42.972  INFO 14356 --- [           main] c.l.sender.ApiReportSenderTests          : Started ApiReportSenderTests in 1.939 seconds (JVM running for 2.843)
2018-05-14 16:33:43.037  INFO 14356 --- [           main] com.lianjinsoft.util.LogUtil             : api.generate.reports send message: 开始生成报表!
2018-05-14 16:33:43.054  INFO 14356 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Attempting to connect to: [192.168.15.131:5672]
2018-05-14 16:33:43.174  INFO 14356 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Created new connection: rabbitConnectionFactory#56ace400:0/SimpleConnection@773cbf4f...
2018-05-14 16:33:43.237  INFO 14356 --- [       Thread-2] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@1e800aaa:...
2018-05-14 16:33:43.240  INFO 14356 --- [       Thread-2] o.s.c.support.DefaultLifecycleProcessor  : Stopping beans in phase 2147483647

消费者日志:

2018-05-14 16:33:43.205  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : api.report.payment receive message: 开始生成报表!
2018-05-14 16:33:43.207  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : api.report.refund receive message: 开始生成报表!

分析日志:

通过生产者日志第7行可以看出,消息已发送成功。

通过消费者日志可以看出,api.report.payment和api.report.refund队列均收到了同一个消息。

6.多对一

在实际项目中,我们的系统通常会做集群、分布式或灾备部署。那么就会出现一对多、多对一或多对多的场景。

那么咱们本地如何模拟多对一呢?

6.1)为了测试方便,我们复用PaymentNotifyReceive案例,在PaymentNotifySenderTests测试类中,增加测试方法

test_sender_many2one_1:请求参数为偶数

test_sender_many2one_2:请求参数为奇数

@Test
public void test_sender_many2one_1() throws Exception {
	for (int i = 0; i < 20; i+=2) {
		sender.sender("支付订单号:"+i);
		Thread.sleep(1000);
	}
}

@Test
public void test_sender_many2one_2() throws Exception {
	for (int i = 1; i < 20; i+=2) {
		sender.sender("支付订单号:"+i);
		Thread.sleep(1000);
	}
}

6.2)执行test_sender_many2one_1()、test_sender_many2one_2()方法

生产者1日志:

2018-05-14 16:34:49.249  INFO 5064 --- [           main] c.l.sender.PaymentNotifySenderTests      : Starting PaymentNotifySenderTests on LAPTOP-1DF7S904 with PID 5064 (started by lianjinsoft in...
2018-05-14 16:34:49.250  INFO 5064 --- [           main] c.l.sender.PaymentNotifySenderTests      : No active profile set, falling back to default profiles: default
2018-05-14 16:34:49.297  INFO 5064 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@7eac9008:...
2018-05-14 16:34:49.989  INFO 5064 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.amqp.rabbit.annotation.RabbitBootstrapConfiguration' of type ...
2018-05-14 16:34:51.267  INFO 5064 --- [           main] o.s.c.support.DefaultLifecycleProcessor  : Starting beans in phase 2147483647
2018-05-14 16:34:51.293  INFO 5064 --- [           main] c.l.sender.PaymentNotifySenderTests      : Started PaymentNotifySenderTests in 2.449 seconds (JVM running for 3.366)
2018-05-14 16:34:51.357  INFO 5064 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:0
2018-05-14 16:34:51.370  INFO 5064 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Attempting to connect to: [192.168.15.131:5672]
2018-05-14 16:34:51.817  INFO 5064 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Created new connection: rabbitConnectionFactory#56ace400:0/SimpleConnection@773cbf4f ...
2018-05-14 16:34:52.866  INFO 5064 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:2
2018-05-14 16:34:53.870  INFO 5064 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:4
2018-05-14 16:34:54.870  INFO 5064 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:6
2018-05-14 16:34:55.871  INFO 5064 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:8
2018-05-14 16:34:56.872  INFO 5064 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:10
2018-05-14 16:34:57.872  INFO 5064 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:12
2018-05-14 16:34:58.873  INFO 5064 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:14
2018-05-14 16:34:59.875  INFO 5064 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:16
2018-05-14 16:35:00.876  INFO 5064 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:18
2018-05-14 16:35:01.882  INFO 5064 --- [       Thread-2] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@7eac9008:...
2018-05-14 16:35:01.883  INFO 5064 --- [       Thread-2] o.s.c.support.DefaultLifecycleProcessor  : Stopping beans in phase 2147483647

生产者2日志:

2018-05-14 16:34:52.689  INFO 13988 --- [           main] c.l.sender.PaymentNotifySenderTests      : Starting PaymentNotifySenderTests on LAPTOP-1DF7S904 with PID 13988 (started by lianjinsoft in...
2018-05-14 16:34:52.690  INFO 13988 --- [           main] c.l.sender.PaymentNotifySenderTests      : No active profile set, falling back to default profiles: default
2018-05-14 16:34:52.738  INFO 13988 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@7eac9008: ...
2018-05-14 16:34:53.444  INFO 13988 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.amqp.rabbit.annotation.RabbitBootstrapConfiguration' of type ...
2018-05-14 16:34:54.567  INFO 13988 --- [           main] o.s.c.support.DefaultLifecycleProcessor  : Starting beans in phase 2147483647
2018-05-14 16:34:54.575  INFO 13988 --- [           main] c.l.sender.PaymentNotifySenderTests      : Started PaymentNotifySenderTests in 2.237 seconds (JVM running for 4.18)
2018-05-14 16:34:54.788  INFO 13988 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:1
2018-05-14 16:34:54.796  INFO 13988 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Attempting to connect to: [192.168.15.131:5672]
2018-05-14 16:34:54.870  INFO 13988 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Created new connection: rabbitConnectionFactory#305f7627:0/SimpleConnection@665e9289...
2018-05-14 16:34:55.903  INFO 13988 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:3
2018-05-14 16:34:56.903  INFO 13988 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:5
2018-05-14 16:34:57.904  INFO 13988 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:7
2018-05-14 16:34:58.904  INFO 13988 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:9
2018-05-14 16:34:59.905  INFO 13988 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:11
2018-05-14 16:35:00.906  INFO 13988 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:13
2018-05-14 16:35:01.907  INFO 13988 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:15
2018-05-14 16:35:02.907  INFO 13988 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:17
2018-05-14 16:35:03.910  INFO 13988 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:19
2018-05-14 16:35:04.928  INFO 13988 --- [       Thread-2] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@7eac9008:...
2018-05-14 16:35:04.932  INFO 13988 --- [       Thread-2] o.s.c.support.DefaultLifecycleProcessor  : Stopping beans in phase 2147483647

消费者日志:

2018-05-14 16:34:51.853  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:0
2018-05-14 16:34:52.871  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:2
2018-05-14 16:34:53.871  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:4
2018-05-14 16:34:54.871  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:6
2018-05-14 16:34:54.902  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:1
2018-05-14 16:34:55.872  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:8
2018-05-14 16:34:55.904  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:3
2018-05-14 16:34:56.873  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:10
2018-05-14 16:34:56.905  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:5
2018-05-14 16:34:57.873  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:12
2018-05-14 16:34:57.905  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:7
2018-05-14 16:34:58.878  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:14
2018-05-14 16:34:58.906  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:9
2018-05-14 16:34:59.877  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:16
2018-05-14 16:34:59.906  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:11
2018-05-14 16:35:00.877  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:18
2018-05-14 16:35:00.909  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:13
2018-05-14 16:35:01.909  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:15
2018-05-14 16:35:02.911  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:17
2018-05-14 16:35:03.914  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:19

分析日志:

从生产者1、生产者2日志中可以看出,所有消息均已经发送成功。

从消费者日志可以看出,所有消息均被成功接收处理。

7.一对多

如何模拟一对多?

7.1)为了测试方便,我们继续复用PaymentNotifyReceive案例,在PaymentNotifySenderTests测试类中,增加测试方法

test_sender_one2many:循环调用20次。

@Test
public void test_sender_one2many() {
	for (int i = 0; i < 20; i++) {
		sender.sender("支付订单号:"+i);
	}
}

7.2)测试

为了达到一对多的效果,我们需要多启动一个(或多个)消费者。然后执行test_sender_one2many()测试方法。

生产者日志:

2018-05-14 16:36:27.703  INFO 7508 --- [           main] c.l.sender.PaymentNotifySenderTests      : Starting PaymentNotifySenderTests on LAPTOP-1DF7S904 with PID 7508 (started by lianjinsoft in...
2018-05-14 16:36:27.704  INFO 7508 --- [           main] c.l.sender.PaymentNotifySenderTests      : No active profile set, falling back to default profiles: default
2018-05-14 16:36:27.729  INFO 7508 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@7eac9008:...
2018-05-14 16:36:28.391  INFO 7508 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.amqp.rabbit.annotation.RabbitBootstrapConfiguration' of type...
2018-05-14 16:36:29.285  INFO 7508 --- [           main] o.s.c.support.DefaultLifecycleProcessor  : Starting beans in phase 2147483647
2018-05-14 16:36:29.303  INFO 7508 --- [           main] c.l.sender.PaymentNotifySenderTests      : Started PaymentNotifySenderTests in 2.197 seconds (JVM running for 3.097)
2018-05-14 16:36:29.504  INFO 7508 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:0
2018-05-14 16:36:29.516  INFO 7508 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Attempting to connect to: [192.168.15.131:5672]
2018-05-14 16:36:29.635  INFO 7508 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Created new connection: rabbitConnectionFactory#4f071df8:0/SimpleConnection@42a9e5d1...
2018-05-14 16:36:29.672  INFO 7508 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:1
2018-05-14 16:36:29.679  INFO 7508 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:2
2018-05-14 16:36:29.705  INFO 7508 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:3
2018-05-14 16:36:29.707  INFO 7508 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:4
2018-05-14 16:36:29.710  INFO 7508 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:5
2018-05-14 16:36:29.710  INFO 7508 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:6
2018-05-14 16:36:29.710  INFO 7508 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:7
2018-05-14 16:36:29.713  INFO 7508 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:8
2018-05-14 16:36:29.719  INFO 7508 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:9
2018-05-14 16:36:29.728  INFO 7508 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:10
2018-05-14 16:36:29.729  INFO 7508 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:11
2018-05-14 16:36:29.733  INFO 7508 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:12
2018-05-14 16:36:29.734  INFO 7508 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:13
2018-05-14 16:36:29.734  INFO 7508 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:14
2018-05-14 16:36:29.734  INFO 7508 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:15
2018-05-14 16:36:29.741  INFO 7508 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:16
2018-05-14 16:36:29.742  INFO 7508 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:17
2018-05-14 16:36:29.742  INFO 7508 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:18
2018-05-14 16:36:29.744  INFO 7508 --- [           main] com.lianjinsoft.util.LogUtil             : notify.payment send message: 支付订单号:19
2018-05-14 16:36:29.762  INFO 7508 --- [       Thread-2] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@7eac9008:...
2018-05-14 16:36:29.767  INFO 7508 --- [       Thread-2] o.s.c.support.DefaultLifecycleProcessor  : Stopping beans in phase 2147483647

消费者1日志:

2018-05-14 16:36:29.675  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:0
2018-05-14 16:36:29.690  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:2
2018-05-14 16:36:29.712  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:4
2018-05-14 16:36:29.714  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:6
2018-05-14 16:36:29.728  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:9
2018-05-14 16:36:29.733  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:11
2018-05-14 16:36:29.737  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:13
2018-05-14 16:36:29.740  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:15
2018-05-14 16:36:29.743  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:16
2018-05-14 16:36:29.745  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:18

消费者2日志:

2018-05-14 16:36:29.705  INFO 13448 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:1
2018-05-14 16:36:29.709  INFO 13448 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:3
2018-05-14 16:36:29.712  INFO 13448 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:5
2018-05-14 16:36:29.718  INFO 13448 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:7
2018-05-14 16:36:29.722  INFO 13448 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:8
2018-05-14 16:36:29.731  INFO 13448 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:10
2018-05-14 16:36:29.736  INFO 13448 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:12
2018-05-14 16:36:29.738  INFO 13448 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:14
2018-05-14 16:36:29.744  INFO 13448 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:17
2018-05-14 16:36:29.747  INFO 13448 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.payment receive message: 支付订单号:19

分析日志:

从生产者日志可以看出,所有的消息均已经发送成功。

从消费者1、消费者2日志可以看出,消息被两个消费者均衡消费了。

8.发送对象

实际项目中,请求信息可能包含多个字段。为了保证生产者与消费者两端的字段一致性,通常会传递一个对象。

8.1)为了测试方便,我们在DirectConfig中增加一个消息队列

@Bean
public Queue refundNotifyQueue() {
	return new Queue("notify.refund");
}

8.2)添加一个消息监听类(消费者)

监听routingKey为notify.refund的队列消息

@Component
@RabbitListener(queues = "notify.refund")
public class RefundNotifyReceive {
	@RabbitHandler
	public void receive(Order order) {
		LogUtil.info("notify.refund receive message: "+order);
	}
}

8.3)添加一个消息发送类(生产者)

@Component
public class RefundNotifySender {
	@Autowired
	private AmqpTemplate rabbitTemplate;
	
	public void sender(Order order){
		LogUtil.info("notify.refund send message: "+order);
		rabbitTemplate.convertAndSend("notify.refund", order);
	}
}

8.4)添加一个测试类

@RunWith(SpringRunner.class)
@SpringBootTest
public class RefundNotifySenderTests {
	@Autowired
	private RefundNotifySender sender;
	
	@Test
	public void test_sender() {
		Order order = new Order();
		order.setId(100001);
		order.setOrderId(String.valueOf(System.currentTimeMillis()));
		order.setAmount(new BigDecimal("1999.99"));
		order.setCreateTime(new Date());
		sender.sender(order);
	}
}

8.5)执行RefundNotifySenderTests测试类

生产者日志:

2018-05-14 16:37:47.038  INFO 13672 --- [           main] c.l.sender.RefundNotifySenderTests       : Starting RefundNotifySenderTests on LAPTOP-1DF7S904 with PID 13672 (started by lianjinsoft in...
2018-05-14 16:37:47.041  INFO 13672 --- [           main] c.l.sender.RefundNotifySenderTests       : No active profile set, falling back to default profiles: default
2018-05-14 16:37:47.070  INFO 13672 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@1e800aaa:...
2018-05-14 16:37:47.715  INFO 13672 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.amqp.rabbit.annotation.RabbitBootstrapConfiguration' of type ...
2018-05-14 16:37:48.779  INFO 13672 --- [           main] o.s.c.support.DefaultLifecycleProcessor  : Starting beans in phase 2147483647
2018-05-14 16:37:48.802  INFO 13672 --- [           main] c.l.sender.RefundNotifySenderTests       : Started RefundNotifySenderTests in 2.082 seconds (JVM running for 2.967)
2018-05-14 16:37:49.085  INFO 13672 --- [           main] com.lianjinsoft.util.LogUtil             : notify.refund send message: Order [id=100001, orderId=1526287069081, amount=1999.99, createTime=...
2018-05-14 16:37:49.104  INFO 13672 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Attempting to connect to: [192.168.15.131:5672]
2018-05-14 16:37:49.170  INFO 13672 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Created new connection: rabbitConnectionFactory#6b5894c8:0/SimpleConnection@38f57b3d [delegate=...
2018-05-14 16:37:49.265  INFO 13672 --- [       Thread-2] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@1e800aaa: ...
2018-05-14 16:37:49.266  INFO 13672 --- [       Thread-2] o.s.c.support.DefaultLifecycleProcessor  : Stopping beans in phase 2147483647

消费者日志:

2018-05-14 16:37:49.242  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.refund receive message: Order [id=100001, orderId=1526287069081, amount=1999.99, createTime=...

分析日志:

从生产者日志可以看出,order对象已经发送成功。

从消费者日志可以看出,order对象已经接受成功并可以直接使用。

注意:

传递的对象必须支持序列化(实现了Serializable接口)

9.RPC

RabbitMQ支持RPC远程调用,同步返回结果。

9.1)为了测试方便,我们在DirectConfig中增加一个消息队列

@Bean
public Queue queryOrderQueue() {
	return new Queue("query.order");
}

9.2)添加一个消息监听类(消费者)

监听routingKey为query.order的队列消息

@Component
@RabbitListener(queues = "query.order")
public class QueryOrderReceive {
	@RabbitHandler
	public Order receive(String orderId) {
		LogUtil.info("notify.refund receive message: "+orderId);
		
		Order order = new Order();
		order.setId(100001);
		order.setOrderId(orderId);
		order.setAmount(new BigDecimal("2999.99"));
		order.setCreateTime(new Date());
		return order;
	}
}

9.3)添加一个消息发送类(生产者)

@Component
public class QueryOrderSender {
	@Autowired
	private AmqpTemplate rabbitTemplate;
	
	public void sender(String orderId){
		LogUtil.info("query.order send message: "+orderId);
		Order order = (Order) rabbitTemplate.convertSendAndReceive("query.order", orderId);
		LogUtil.info("query.order return message: "+order);
	}
}

9.4)添加一个测试类

@RunWith(SpringRunner.class)
@SpringBootTest
public class QueryOrderSenderTests {
	@Autowired
	private QueryOrderSender sender;
	
	@Test
	public void test_sender() {
		sender.sender("900000001");
	}
}

9.5)执行QueryOrderSenderTests测试类

生产者日志:

2018-05-14 16:38:14.163  INFO 2024 --- [           main] c.l.sender.QueryOrderSenderTests         : Starting QueryOrderSenderTests on LAPTOP-1DF7S904 with PID 2024 (started by lianjinsoft in...
2018-05-14 16:38:14.164  INFO 2024 --- [           main] c.l.sender.QueryOrderSenderTests         : No active profile set, falling back to default profiles: default
2018-05-14 16:38:14.197  INFO 2024 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@7eac9008: ...
2018-05-14 16:38:14.848  INFO 2024 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.amqp.rabbit.annotation.RabbitBootstrapConfiguration' of type ...
2018-05-14 16:38:15.705  INFO 2024 --- [           main] o.s.c.support.DefaultLifecycleProcessor  : Starting beans in phase 2147483647
2018-05-14 16:38:15.715  INFO 2024 --- [           main] c.l.sender.QueryOrderSenderTests         : Started QueryOrderSenderTests in 1.927 seconds (JVM running for 3.079)
2018-05-14 16:38:15.793  INFO 2024 --- [           main] com.lianjinsoft.util.LogUtil             : query.order send message: 900000001
2018-05-14 16:38:15.812  INFO 2024 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Attempting to connect to: [192.168.15.131:5672]
2018-05-14 16:38:15.988  INFO 2024 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Created new connection: rabbitConnectionFactory#38be305c:0/SimpleConnection@71984c3 ...
2018-05-14 16:38:16.057  INFO 2024 --- [           main] com.lianjinsoft.util.LogUtil             : query.order return message: Order [id=100001, orderId=900000001, amount=2999.99, createTime=...
2018-05-14 16:38:16.079  INFO 2024 --- [       Thread-2] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@7eac9008: ...
2018-05-14 16:38:16.097  INFO 2024 --- [       Thread-2] o.s.c.support.DefaultLifecycleProcessor  : Stopping beans in phase 2147483647

消费者日志:

2018-05-14 16:38:16.028  INFO 14876 --- [cTaskExecutor-1] com.lianjinsoft.util.LogUtil             : notify.refund receive message: 900000001

分析日志:

从生产者日志第7行可以看出,消息已经发送成功。从第10行日志可以看出,已经收取到返回的消息,并成功转化为Order对象。

从消费者日志可以看出,已经成功接收到消息并处理完成。

虽然RabbitMQ支持RPC接口调用,但不推荐使用。

原因:

1)RPC默认为单线程阻塞模型,效率极低。

2)需要手动实现多线程消费。

安装RabbitMQ请参考:CentOS在线安装RabbitMQ3.7

本帖源代码:https://gitee.com/skychenjiajun/spring-boot

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