概述:安装看我上篇文章Docker安装rabbitmq-CSDN博客
模拟发送数据
发送消息,发现一下信息:
所以得出理论,消息发送是先到交换机,然后由交换机路由到消息队列
交换机是负责路由和转发消息的,并没有存储的功能。
同理绑定queue2
这时,再在交换机中发消息
查看结果:
在rabbitmq中有虚拟主机的概念。
添加成功后,发现没有虚拟主机,也就是说,我用这个用户登录后,是不可以操作上面的数据的。
又因为,我是超级管理员,所以我能看到这些
所以只能看,不能操作。
选好后就只能看自己的了。
官网:RabbitMQ Tutorials — RabbitMQ
可以看到,官网上有案例,我们大多情况下用的是SpringAmqp,所以也就不讲那么多java简单调用的事情了。
第一步:在控制台里面创建一个simple.queue队列
第二步:编写代码
pom文件
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.cyl</groupId>
<artifactId>test09</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>test09</name>
<description>test09</description>
<properties>
<java.version>1.8</java.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<spring-boot.version>2.6.13</spring-boot.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-amqp</artifactId>
</dependency>
<dependency>
<groupId>com.rabbitmq</groupId>
<artifactId>amqp-client</artifactId>
<version>5.13.0</version>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${spring-boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>${spring-boot.version}</version>
<configuration>
<mainClass>org.cyl.test09.Test09Application</mainClass>
<skip>true</skip>
</configuration>
<executions>
<execution>
<id>repackage</id>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
配置mq服务端消息
spring:
rabbitmq:
host: 192.168.56.10
port: 5672
virtual-host: /cmall
username: cmall
password: 123456
发送方:
package org.cyl.test09.demos;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class SendMessageService {
@Autowired
private RabbitTemplate rabbitTemplate;
public void testSimpleQueue(){
String queueName="simple.queue";
String message="hello,spring amqp!";
rabbitTemplate.convertAndSend(queueName,message);
}
public void sendMessage(String exchange, String routingKey, Object message) {
rabbitTemplate.convertAndSend(exchange, routingKey, message);
}
}
接收方:
package org.cyl.test09.demos;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Service;
@Service
public class ReceiveMessageService {
@RabbitListener(queues = "simple.queue")
public void receiveMessage(String message) {
System.out.println("接收到的消息: " + message);
}
}
controller类:
package org.cyl.test09.demos.controller;
import org.cyl.test09.demos.ReceiveMessageService;
import org.cyl.test09.demos.SendMessageService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class HelloController {
@Autowired
SendMessageService sendMsgservice;
@Autowired
ReceiveMessageService receiveMsgService;
@GetMapping("/send")
public String send(){
sendMsgservice.testSimpleQueue();
return "ok";
}
}
展示结果:
发送:
package org.cyl.test09.demos;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class SendMessageService {
@Autowired
private RabbitTemplate rabbitTemplate;
public void testSimpleQueue() throws InterruptedException {
String queueName="work.queue";
for (int i=1;i<50;i++){
String message="hello,spring amqp!_"+i;
rabbitTemplate.convertAndSend(queueName,message);
Thread.sleep(20);
}
}
public void sendMessage(String exchange, String routingKey, Object message) {
rabbitTemplate.convertAndSend(exchange, routingKey, message);
}
}
接收:
package org.cyl.test09.demos;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Service;
@Service
public class ReceiveMessageService {
@RabbitListener(queues = "work.queue")
public void receiveMessage1(String message) {
System.out.println("消费者1接收到的消息: " + message);
}
@RabbitListener(queues = "work.queue")
public void receiveMessage2(String message) {
System.out.println("消费者2接收到的消息: " + message);
}
}
消费者一和消费者二是轮询效果。
发送端:
public void testFanout() {
String exchangeName="cmall.fanout";
String message="hello,spring everyone";
rabbitTemplate.convertAndSend(exchangeName,null,message);
}
接收端:
@RabbitListener(queues = "fanout.queue1")
public void receiveMessage3(String message) {
System.out.println("消费者1接收到的消息: " + message);
}
@RabbitListener(queues = "fanout.queue2")
public void receiveMessage4(String message) {
System.out.println("消费者2接收到的消息: " + message);
}
接收方:
@RabbitListener(queues = "direct.queue1")
public void receiveMessage5(String message) {
System.out.println("消费者1接收到的消息: " + message);
}
@RabbitListener(queues = "direct.queue2")
public void receiveMessage6(String message) {
System.out.println("消费者2接收到的消息: " + message);
}
发送方:
public void testDirect1() {
String exchangeName="cmall.fanout";
String message="hello,spring everyone";
rabbitTemplate.convertAndSend(exchangeName,"red",message);
}
public void testDirect2() {
String exchangeName="cmall.fanout";
String message="hello,spring blue";
rabbitTemplate.convertAndSend(exchangeName,"blue",message);
}
public void testDirect3() {
String exchangeName="cmall.fanout";
String message="hello,spring yellow";
rabbitTemplate.convertAndSend(exchangeName,"yellow",message);
}
这个示例代码就懒得写了。
绑定队列到哪个交换机里面。
一般建立关系都是在消费者这边的。
基于注解式声明队列和交换机。
字节码可变,会有安全问题。
搞完以上东西,代码不用变,在发一次,即可为json。
好了,基础讲完。