rabbitmq实现单发送单接收

1、创建两个项目。都使其支持rabbitmq

（1）在pom.xml文件中添加支持rabbitmq的jar包

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

（2）添加配置文件

#rabbitmq的服务器地址
spring.rabbitmq.host=127.0.0.1
#rabbitmq的服务器端口号
spring.rabbitmq.port=5672
#服务器用户名密码
spring.rabbitmq.username=guest
spring.rabbitmq.password=guest
spring.rabbitmq.publisher-confirms=true
spring.rabbitmq.virtual-host=/

2.搭建发送者的代码

import org.springframework.amqp.core.AmqpTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.util.Date;

@Component
public class HelloSender {

    @Autowired
    private AmqpTemplate rabbitTemplate;
    public void send() {
        String sendMsg = "hello1 " + new Date();
        System.out.println("Sender1 : " + sendMsg);

        // 第一个参数，exchangename:交换机的名称
        // 第二个参数，queue.cc:routingkey名称
        // 第三个参数，sendMsg:发送的内容
        rabbitTemplate.convertAndSend("exchangename","queue.cc",sendMsg);
    }
}

3.搭建消费者的代码

import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;

@Component
// 监听的队列
@RabbitListener(queues = "queuename")
public class HelloReceiver {

    @RabbitHandler
    public void process(String hello) {
        System.out.println("Receiver1  : " + hello);
    }
}

 4.在发送消息方创建测试类

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/rabbit")
public class RabbitTest {
    @Autowired
    private HelloSender helloSender1;

    @PostMapping("/hello")
    public String hello() {
        helloSender1.send();
        return "OK";
    }
}

5、结果：

发送方打印结果
Sender1 : hello1 Thu Sep 06 16:49:21 CST 2018
消费方打印结果
Receiver1  : hello1 Thu Sep 06 16:49:21 CST 2018

 6、拓展

可以根据上面的操作搭建多节点

rabbitmq支持事务，有两种模式：AMQP提供的事务模式和发送者确认模式。参考：https://www.cnblogs.com/vipstone/p/9350075.html