RabbitMQ Java实现demo

代码运行需先安装环境依赖

windows环境下:

先安装Erlang
页面:https://www.erlang.org/downloads
下载链接:https://erlang.org/download/otp_win64_24.1.exe
安装完配置环境变量
ERLANG_HOME   C:Program Fileserl-24.1
然后在path变量里添加 %ERLANG_HOME%/bin
然后打开cmd命令框，输入erl
Eshell V12.1  (abort with ^G)
Erlang安装完成
开始安装rabbitmq
windows环境下
页面:https://www.rabbitmq.com/install-windows.html
下载链接:https://github.com/rabbitmq/rabbitmq-server/releases/download/v3.9.7/rabbitmq-server-3.9.7.exe

client端

package com.liang.demo.RabbitMQ;

import com.rabbitmq.client.*;

import java.io.IOException;


public class Client {
    public static void main(String[] args) throws Exception {
        //连接工厂
        ConnectionFactory f = new ConnectionFactory();
        f.setHost("ip地址");
        f.setUsername("admin");
        f.setPassword("admin");
        //建立连接
        Connection c = f.newConnection();
        //建立信道
        Channel ch = c.createChannel();
        //声明队列,如果该队列已经创建过,则不会重复创建
        ch.queueDeclare("task_queue", true, false, false, null);
        System.out.println("等待接收数据");

        //收到消息后用来处理消息的回调对象
        DeliverCallback callback = new DeliverCallback() {
            @Override
            public void handle(String consumerTag, Delivery message) throws IOException {
                String msg = new String(message.getBody(), "UTF-8");
                System.out.println("收到: " + msg);
                //遍历字符串中的字符,每个点使进程暂停一秒
                for (int i = 0; i < msg.length(); i++) {
                    if (msg.charAt(i) == '.') {
                        try {
                            Thread.sleep(1000);
                        } catch (InterruptedException e) {
                        }
                    }
                }
                System.out.println("处理结束");
                //参数1：消息标签，参数2：是否确认多条消息
                ch.basicAck(message.getEnvelope().getDeliveryTag(), false);
            }
        };

        //消费者取消时的回调对象
        CancelCallback cancel = new CancelCallback() {
            @Override
            public void handle(String consumerTag) throws IOException {
            }
        };
        //一次只能接受一条数据
        ch.basicQos(1);

        //第二个参数为消息回执，消息确认处理完成，为true为自动确认，只要消息发送到消费者即消息处理成功;为false为，手动发送确认回执，服务器才认为这个消息处理成功
        ch.basicConsume("task_queue", false, callback, cancel);
    }
}

server端

package com.liang.demo.RabbitMQ;

import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.MessageProperties;

import java.util.Scanner;



public class Server {
    public static void main(String[] args) throws Exception {
        //创建连接工厂,并设置连接信息
        ConnectionFactory f = new ConnectionFactory();
        f.setHost("ip地址");
        f.setPort(5672);//可选,5672是默认端口
        f.setUsername("admin");
        f.setPassword("admin");

        
        Connection c = f.newConnection();
        //建立信道
        Channel ch = c.createChannel();

        
        ch.queueDeclare("task_queue", true, false, false, null);

        
//        ch.basicPublish("", "helloworld", null, "Hello world!".getBytes());
//        System.out.println("消息已发送");

        while (true) {
            //控制台输入的消息发送到rabbitmq
            System.out.print("输入消息: ");
            String msg = new Scanner(System.in).nextLine();
            //如果输入的是"exit"则结束生产者进程
            if ("exit".equals(msg)) {
                break;
            }
            //参数:exchage,routingKey,props,body;
            //MessageProperties.PERSISTENT_TEXT_PLAIN持久化的设置
            ch.basicPublish("", "task_queue", MessageProperties.PERSISTENT_TEXT_PLAIN, msg.getBytes());
            System.out.println("消息已发送: " + msg);
        }


        c.close();
    }
}

pom添加依赖:

        
        
            com.rabbitmq
            amqp-client
            5.4.3