RabbitMq入门（三）springBoot整合RabbitMQ

1、配置pom文件

此过程可以使用spring start project选择需要的web、和rabbitMQ模块快速构建

最终pom.xml如下

<?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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.whwe</groupId>
    <artifactId>rabbitmq-demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>rabbitmq-demo</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

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

2、配置编写配置文件

server:
  port: 9001
spring:
  application:
  rabbitmq:
      host: 192.168.20.129
      port: 5672
      username: guest
      password: guest
      virtualHost: /

3、声明交换机、队列等配置信息

package com.whwe.rabbitmqdemo.config;

import org.springframework.amqp.core.*;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * @ClassName RabbitmqConfig
 * @Description TODO
 * @Author yueyiming
 * @Date 2019/4/26 16:24
 * @Version 1.0
 * https://blog.csdn.net/hzau_itdog
 **/
@Configuration
public class RabbitmqConfig {
    //对列名称
    public static final String QUEUE_INFORM_EMAIL = "queue_inform_email";
    public static final String QUEUE_INFORM_SMS = "queue_inform_sms";
    //交换机
    public static final String EXCHANGE_TOPICS_INFORM = "exchange_topics_inform";

    //声明队列
    @Bean(QUEUE_INFORM_EMAIL)
    public Queue QUEUE_INFORM_EMAIL() {
        return new Queue(QUEUE_INFORM_EMAIL);
    }

    @Bean(QUEUE_INFORM_SMS)
    public Queue QUEUE_INFORM_SMS() {
        return new Queue(QUEUE_INFORM_SMS);
    }

    //声明交换机
    @Bean(EXCHANGE_TOPICS_INFORM)
    public Exchange exchange() {
        return ExchangeBuilder.topicExchange(EXCHANGE_TOPICS_INFORM).durable(true).build();
    }

    //绑定队列和交换机
    @Bean
    public Binding binding_email(@Qualifier(EXCHANGE_TOPICS_INFORM) Exchange exchange, @Qualifier(QUEUE_INFORM_EMAIL) Queue queue) {
        return BindingBuilder.bind(queue).to(exchange).with("inform.sms.email").noargs();

    }

}

使用rabbitTemplate发送消息

@RestController
public class TestController {
    @Autowired
    private RabbitTemplate rabbitTemplate;
    @RequestMapping("/test")
    public String test(){
        rabbitTemplate.convertAndSend(RabbitmqConfig.EXCHANGE_TOPICS_INFORM,"inform.sms.email","发了消息");
        return"success";

    }
}

 编写消费者

package com.whwe.rabbitmqdemo.config;

import com.rabbitmq.client.Channel;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;

import java.io.UnsupportedEncodingException;

/**
 * @ClassName ConsumerRabbit
 * @Description TODO
 * @Author yueyiming
 * @Date 2019/4/28 9:48
 * @Version 1.0
 * https://blog.csdn.net/hzau_itdog
 **/
@Component
public class ConsumerRabbit {
    @RabbitListener(queues = {RabbitmqConfig.QUEUE_INFORM_EMAIL})
    public void receiveMsg(String msg, Message message, Channel channel) throws UnsupportedEncodingException {
        System.out.println(msg);
        System.out.println(message.getBody());
        System.out.println(new String(message.getBody(),"utf-8"));

    }
}

启动访问 http://127.0.0.1:9001/test

发现如下错误 

com.rabbitmq.client.ShutdownSignalException: channel error; protocol method: #method<channel.close>(reply-code=406, reply-text=PRECONDITION_FAILED - inequivalent arg 'auto_delete' for queue 'queue_inform_sms' in vhost '/': received 'false' but current is 'true', class-id=50, method-id=10)
	at com.rabbitmq.client.impl.ChannelN.asyncShutdown(ChannelN.java:516) ~[amqp-client-5.4.3.jar:5.4.3]
	at com.rabbitmq.client.impl.ChannelN.processAsync(ChannelN.java:346) ~[amqp-client-5.4.3.jar:5.4.3]
	at com.rabbitmq.client.impl.AMQChannel.handleCompleteInboundCommand(AMQChannel.java:178) ~[amqp-client-5.4.3.jar:5.4.3]
	at com.rabbitmq.client.impl.AMQChannel.handleFrame(AMQChannel.java:111) ~[amqp-client-5.4.3.jar:5.4.3]
	at com.rabbitmq.client.impl.AMQConnection.readFrame(AMQConnection.java:670) ~[amqp-client-5.4.3.jar:5.4.3]
	at com.rabbitmq.client.impl.AMQConnection.access$300(AMQConnection.java:48) ~[amqp-client-5.4.3.jar:5.4.3]
	at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:597) ~[amqp-client-5.4.3.jar:5.4.3]
	at java.lang.Thread.run(Thread.java:748) [na:1.8.0_202]

原因是vhost的权限并未设置

使用如下命令

rabbitmqctl set_permissions  -p / guest "."  "." "."