SpringBoot28 RabbitMQ知识点、Docker下载RabbitMQ、SpringBoot整合RabbtiMQ
1 RabbitMQ知识点
1.1 整体架构图
消息生产者将消息投递到exchange中,exchange会以某种路由机制将生产者投递的消息路由到queue中,消息消费者再从queue中获取消息进行消费。
1.2 核心概念
1.2.1 server
又称Broker,接收客户端的连接,实现AMQP实体服务
1.2.2 Connection
连接,应用服务与Broker的网络连接(PS:和JDBC中的connection作用相似)
1.2.3 Channel
网络信道,几乎所有的操作都在Channel中进行,Channel是进行消息读写的通道。客户端可建立多个Channel,每个Channel代表一个会话。【PS:相当于JDBC的Statement】
1.2.4 Message
消息,服务器和应用程序之间传递的数据,由Properties和Body组成;Properties可以对消息进行修饰,比如消息的优先级、迟延等高级特性;Body则就是消息的内容。
1.2.5 Virtual Host
虚拟地址,用于进行逻辑隔离的最上层的消息路由。一个Virtual Host 里面可以有若干个Exchange 和 Queue,同一个Virtual Host里面不能有相同名称的Exchange或Queue;默认是 / , Virtual Host 通常用来进行项目划分,即:一个项目相关的exchange 和 queue 都在一个Virtual Host中。
1.2.6 Exchange
交换机,用于接收消息;根据路由键转发消息到绑定的队列
1.2.7 Binding
Exchange 和 Queue 之间的虚拟连接,Binding 可以包含routing key。
1.2.8 Routing Key
一个路由规则,虚拟机可以用它来确定如何路由一个特定消息;就是exchange和queue的路由规则
1.2.9 Queue
也称Message Queue,消息队列,保存消息并将他们转发给消费者
1.3 RabbitMQ消息的流转
消息发布者会发送一个消息、exchange、routeing Key 到rabbtiMQ,他们先经过 Virtual Host , 再经过 Exchange, 再到Queue;消息消费者再到Queue中获取消息
2 Docker下载RabbiMQ
2.1 Docker环境搭建
docker版本为:
2.2 安装RabbitMQ
2.2.1 拉取RabbitMQ镜像
docker pull rabbitmq:3.7.7-management
技巧01:rabbitMQ的版本可以去官网进行查看
2.2.2 查看拉取的镜像列表
2.2.3 创建并启动rabbitMQ容器
docker run -d --hostname my-rabbit -p 5672:5672 -p 15672:15672 rabbitmq:3.7.7-management
技巧01:-p 是将虚拟机的端口和docker中的端口做一个映射,这样访问虚拟机的端口就相当于访问了docker中的端口
技巧02:5672是连接rabbtiMQ的端口,15672是连接rabbitMQ管理页面的端口
2.2.4 查看启动的rabbitMQ容器
2.3 连接rabbitMQ管理页面
技巧01:直接在浏览器访问 虚拟机IP + rabbtiMQ管理页面端口 即可,例如:
http://192.168.233.135:15672/
技巧02:第一次访问的时候需要输入用户名和用户密码,默认的用户名和用户密码是guest
技巧03:访问成功后的界面如下
3 SpringBoot整合RabbitMQ之消费发布者
3.1 创建一个SpringBoot项目
引入相关依赖:web、amqp,其他的都是辅助依赖
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-amqp --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-amqp</artifactId> </dependency>
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.xunyji</groupId> <artifactId>rabbitmq01</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>rabbitmq01</name> <description>Demo project for Spring Boot</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.4.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-amqp --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-amqp</artifactId> </dependency> <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 --> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> </dependency> <!-- https://mvnrepository.com/artifact/commons-io/commons-io --> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.4</version> </dependency> <!-- https://mvnrepository.com/artifact/com.alibaba/fastjson --> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.47</version> </dependency> <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
pom.xml
3.2 配置文件
# rabbitMQ基本配置 spring.rabbitmq.addresses=192.168.233.135:5672 spring.rabbitmq.username=guest spring.activemq.password=guest spring.rabbitmq.virtual-host=/ spring.rabbitmq.connection-timeout=15000 server.servlet.path=/ server.port=8001 spring.http.encoding.charset=UTF-8 spring.jackson.date-format=yyyy-MM-dd HH:mm:ss spring.jackson.time-zone=GMT+8 spring.jackson.default-property-inclusion=non_null
application.properties
3.3 发布消息
依赖注入RabbitTemplate的实例并调用实例方法convertAndSend发布消息
技巧01:在进行发布之前需要在rabbitMQ中设置响应的exchange和queue
3.3.1 在RabbitMQ中添加exchange
技巧01:添加完成后exchange列表中就会出现新增的exchange信息
3.3.2 在RabbitMQ中添加Queue
技巧01:添加完queue后就会在queue列表中看到新添加的queue
3.3.3 设置exchange和queue的路由规则
技巧01:exchange和queue都可以进行设置,只有一方设置了就可以啦
3.4 测试
向rabbitMQ发布一则消息
package com.xunyji.rabbitmq01.producer; import com.xunyji.rabbitmq01.Rabbitmq01ApplicationTests; import com.xunyji.rabbitmq01.entity.Order; import lombok.extern.slf4j.Slf4j; import org.junit.Test; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; import java.util.UUID; import static org.junit.Assert.*; @Component @Slf4j public class OrderSenderTest extends Rabbitmq01ApplicationTests { @Autowired private OrderSender orderSender; @Test public void test01() throws Exception { Order order = Order.builder() .id("20180830") .name("测试订单01") .messageId(System.currentTimeMillis() + "$" + UUID.randomUUID().toString()) .build(); orderSender.sendOrder(order); } }
View Code
技巧01:发送成功后,queue中就会有有一条为被消费的消息;当消息消费者消费了过后才会从队列中剔除
4 SpringBoot整合RabbitMQ之消费订阅者
4.1 创建一个SpringBoot项目
引入必要依赖:web、ampq,其余都是辅助依赖
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-amqp --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-amqp</artifactId> </dependency>
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.xunyji</groupId> <artifactId>rabbitmq02-consumer</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>rabbitmq02-consumer</name> <description>Demo project for Spring Boot</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.4.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-amqp --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-amqp</artifactId> </dependency> <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 --> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> </dependency> <!-- https://mvnrepository.com/artifact/commons-io/commons-io --> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.4</version> </dependency> <!-- https://mvnrepository.com/artifact/com.alibaba/fastjson --> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.47</version> </dependency> <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
pom.xml
4.2 配置文件
#springboot整合mq的基本配置 spring.rabbitmq.addresses=192.168.233.135:5672 spring.rabbitmq.username=guest spring.activemq.password=guest spring.rabbitmq.virtual-host=/ spring.rabbitmq.connection-timeout=15000 #springboot整合mq的消费配置 spring.rabbitmq.listener.simple.concurrency=5 spring.rabbitmq.listener.simple.max-concurrency=10 spring.rabbitmq.listener.simple.acknowledge-mode=manual spring.rabbitmq.listener.simple.prefetch=1 server.servlet.path=/ server.port=8002 spring.http.encoding.charset=UTF-8 spring.jackson.date-format=yyyy-MM-dd HH:mm:ss spring.jackson.time-zone=GMT+8 spring.jackson.default-property-inclusion=non_null
View Code
4.3 消费方法编写
在消费方法上利用注解开启监听和指定监听那个队列即可
技巧01:@RabbitHandler 和 @RabbitListener 注解可以自动到rabbitMQ中生成exchange和queue的绑定关系
4.4 获取消息
由于rabbitMQ中已经有一条消息待处理了,所以直接启动项目就可以完成消息的消费,消费后rabbitMQ中待消费的消息数量就为0啦
5 本博文源代码