慕课网_《RabbitMQ消息中间件极速入门与实战》学习总结
慕课网《RabbitMQ消息中间件极速入门与实战》学习总结java
- 时间：2018年09月05日星期三
- 说明：本文部份内容均来自慕课网。@慕课网：https://www.imooc.com
- 教学源码：无
- 学习源码：https://github.com/zccodere/s...
第一章：RabbitMQ起步
1-1 课程导航
课程导航git
- RabbitMQ简介及AMQP协议
- RabbitMQ安装与使用
- RabbitMQ核心概念
- 与SpringBoot整合
- 保障100%的消息可靠性投递方案落地实现
1-2 RabbitMQ简介
初识RabbitMQgithub
- RabbitMQ是一个开源的消息代理和队列服务器
- 用来经过普通协议在彻底不一样的应用之间共享数据
- RabbitMQ是使用Erlang语言来编写的
- 而且RabbitMQ是基于AMQP协议的
RabbitMQ简介web
- 目前不少互联网大厂都在使用RabbitMQ
- RabbitMQ底层采用Erlang语言进行编写
- 开源、性能优秀，稳定性保障
- 与SpringAMQP完美的整合、API丰富
- 集群模式丰富，表达式配置，HA模式，镜像队列模型
- 保证数据不丢失的前提作到高可靠性、可用性
- AMQP全称：Advanced Message Queuing Protocol
- AMQP翻译：高级消息队列协议
AMQP协议模型spring
1-3 RabbitMQ安装
学习笔记apache
0.安装准备 官网地址：http://www.rabbitmq.com/ 安装Linux必要依赖包<Linux7> 下载RabbitMQ安装包 进行安装，修改相关配置文件 vim /etc/hostname vim /etc/hosts 1.安装Erlang wget https://packages.erlang-solutions.com/erlang-solutions_1.0_all.deb sudo dpkg -i erlang-solutions_1.0_all.deb sudo apt-get install erlang erlang-nox 2.安装RabbitMQ echo 'deb http://www.rabbitmq.com/debian/ testing main' | sudo tee /etc/apt/sources.list.d/rabbitmq.list wget -O- https://www.rabbitmq.com/rabbitmq-release-signing-key.asc | sudo apt-key add - sudo apt-get install rabbitmq-server 3.安装RabbitMQ web管理插件 sudo rabbitmq-plugins enable rabbitmq_management sudo systemctl restart rabbitmq-server 访问：http://localhost:15672 默认用户名密码：guest/guest 4.修改RabbitMQ配置 vim /usr/lib/rabbitmq/lib/rabbitmq_server-3.5.7/ebin/rabbit.app 好比修改密码、配置等等；例如：loopback_users中的<<"guest">>，只保留guest 服务启动：rabbitmq-server start & 服务中止：rabbitmqctl app_stop
1-4 RabbitMQ概念
RabbitMQ的总体架构json
RabbitMQ核心概念vim
- Server：又称Broker，接受客户端的链接，实现AMQP实体服务
- Connection：链接，应用程序与Broker的网络链接
-
Channel：网络信道api
几乎全部的操做都在Channel中进行
Channel是进行消息读写的通道
客户端可创建多个Channel
每一个Channel表明一个会话任务 -
Message：消息服务器
服务器和应用程序之间传送的数据，由Properties和Body组成
Properties能够对消息进行修饰，好比消息的优先级、延迟等高级特性
Body则就是消息体内容 -
Virtual host：虚拟机
用于进行逻辑隔离，最上层的消息路由
一个Virtual host里面能够有若干个Exchange和Queue
同一个Virtual host里面不能有相同名称的Exchange或Queue - Exchange：交换机，接收消息，根据路由键转发消息到绑定的队列
- Binding：Exchange和Queue之间的虚拟链接，binding中能够包含routing key
- Routing key：一个路由规则，虚拟机可用它来肯定如何路由一个特定消息
- Queue：也称为Message Queue，消息队列，保存消息并将它们转发给消费者
RabbitMQ消息的流转过程
第二章：RabbitMQ使用
2-1 发送消息
SpringBoot与RabbitMQ集成
- 引入相关依赖
- 对application.properties进行配置
建立名为rabbitmq-producer的maven工程pom以下
<?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">
<parent>
<artifactId>47-rabbitmq</artifactId>
<groupId>com.myimooc</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>rabbitmq-producer</artifactId>
<properties>
<spring.boot.version>2.0.4.RELEASE</spring.boot.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-parent</artifactId>
<version>${spring.boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<!--RabbitMQ依赖-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-amqp</artifactId>
</dependency>
<!--工具类依赖-->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.36</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</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>
1.编写Order类
package com.myimooc.rabbitmq.entity;
import java.io.Serializable;
/**
* <br>
* 标题: 订单实体<br>
* 描述: 订单实体<br>
* 时间: 2018/09/06<br>
*
* @author zc
*/
public class Order implements Serializable{
private static final long serialVersionUID = 6771608755338249746L;
private String id;
private String name;
/**
* 存储消息发送的惟一标识
*/
private String messageId;
public Order() {
}
public Order(String id, String name, String messageId) {
this.id = id;
this.name = name;
this.messageId = messageId;
}
@Override
public String toString() {
return "Order{" +
"id='" + id + ''' +
", name='" + name + ''' +
", messageId='" + messageId + ''' +
'}';
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getMessageId() {
return messageId;
}
public void setMessageId(String messageId) {
this.messageId = messageId;
}
}
2.编写OrderSender类
package com.myimooc.rabbitmq.producer.producer;
import com.myimooc.rabbitmq.entity.Order;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.rabbit.support.CorrelationData;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
/**
* <br>
* 标题: 订单消息发送者<br>
* 描述: 订单消息发送者<br>
* 时间: 2018/09/06<br>
*
* @author zc
*/
@Component
public class OrderSender {
private RabbitTemplate rabbitTemplate;
@Autowired
public OrderSender(
RabbitTemplate rabbitTemplate) {
this.rabbitTemplate = rabbitTemplate;
}
/**
* 发送订单
*
* @param order 订单
* @throws Exception 异常
*/
public void send(Order order) throws Exception {
CorrelationData correlationData = new CorrelationData();
correlationData.setId(order.getMessageId());
// exchange：交换机
// routingKey：路由键
// message：消息体内容
// correlationData：消息惟一ID
this.rabbitTemplate.convertAndSend("order-exchange", "order.a", order, correlationData);
}
}
3.编写application.properties类
# RabbitMQ配置 spring.rabbitmq.addresses=192.168.0.105:5672 spring.rabbitmq.username=guest spring.rabbitmq.password=guest spring.rabbitmq.virtual-host=/ spring.rabbitmq.connection-timeout=15000 # Server配置 server.servlet.context-path=/ server.port=8080 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
4.编写Application类
package com.myimooc.rabbitmq.producer;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
/**
* <br>
* 标题: 启动类<br>
* 描述: 启动类<br>
* 时间: 2018/09/06<br>
*
* @author zc
*/
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
5.编写OrderSenderTest类
package com.myimooc.rabbitmq.producer.producer;
import com.myimooc.rabbitmq.entity.Order;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import java.util.UUID;
/**
* <br>
* 标题: 订单消息发送者测试<br>
* 描述: 订单消息发送者测试<br>
* 时间: 2018/09/06<br>
*
* @author zc
*/
@RunWith(SpringRunner.class)
@SpringBootTest
public class OrderSenderTest {
@Autowired
private OrderSender orderSender;
@Test
public void testSend1() throws Exception {
Order order = new Order();
order.setId("201809062009010001");
order.setName("测试订单1");
order.setMessageId(System.currentTimeMillis() + "$" + UUID.randomUUID().toString().replaceAll("-",""));
this.orderSender.send(order);
}
}
2-2 处理消息
建立名为rabbitmq-consumer的maven工程pom以下
<?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">
<parent>
<artifactId>47-rabbitmq</artifactId>
<groupId>com.myimooc</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>rabbitmq-consumer</artifactId>
<properties>
<spring.boot.version>2.0.4.RELEASE</spring.boot.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-parent</artifactId>
<version>${spring.boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<!--RabbitMQ依赖-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-amqp</artifactId>
</dependency>
<!--工具类依赖-->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.36</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</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>
1.编写Order类
package com.myimooc.rabbitmq.entity;
import java.io.Serializable;
/**
* <br>
* 标题: 订单实体<br>
* 描述: 订单实体<br>
* 时间: 2018/09/06<br>
*
* @author zc
*/
public class Order implements Serializable{
private static final long serialVersionUID = 6771608755338249746L;
private String id;
private String name;
/**
* 存储消息发送的惟一标识
*/
private String messageId;
public Order() {
}
public Order(String id, String name, String messageId) {
this.id = id;
this.name = name;
this.messageId = messageId;
}
@Override
public String toString() {
return "Order{" +
"id='" + id + ''' +
", name='" + name + ''' +
", messageId='" + messageId + ''' +
'}';
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getMessageId() {
return messageId;
}
public void setMessageId(String messageId) {
this.messageId = messageId;
}
}
2.编写OrderReceiver类
package com.myimooc.rabbitmq.consumer.consumer;
import com.rabbitmq.client.Channel;
import com.myimooc.rabbitmq.entity.Order;
import org.springframework.amqp.rabbit.annotation.*;
import org.springframework.amqp.support.AmqpHeaders;
import org.springframework.messaging.handler.annotation.Headers;
import org.springframework.messaging.handler.annotation.Payload;
import org.springframework.stereotype.Component;
import java.util.Map;
/**
* <br>
* 标题: 订单接收者<br>
* 描述: 订单接收者<br>
* 时间: 2018/09/06<br>
*
* @author zc
*/
@Component
public class OrderReceiver {
/**
* 接收消息
*
* @param order 消息体内容
* @param headers 消息头内容
* @param channel 网络信道
* @throws Exception 异常
*/
@RabbitListener(bindings = @QueueBinding(
value = @Queue(value = "order-queue",durable = "true"),
exchange = @Exchange(name = "order-exchange",type = "topic"),
key = "order.*"
))
@RabbitHandler
public void onOrderMessage(@Payload Order order, @Headers Map<String, Object> headers, Channel channel) throws Exception {
// 消费者操做
System.out.println("收到消息：");
System.out.println("订单信息：" + order.toString());
// 手动签收消息
Long deliveryTag = (Long) headers.get(AmqpHeaders.DELIVERY_TAG);
channel.basicAck(deliveryTag, false);
}
}
3.编写application.properties类
# RabbitMQ链接配置 spring.rabbitmq.addresses=192.168.0.105:5672 spring.rabbitmq.username=guest spring.rabbitmq.password=guest spring.rabbitmq.virtual-host=/ spring.rabbitmq.connection-timeout=15000 # RabbitMQ消费配置 # 基本并发：5 spring.rabbitmq.listener.simple.concurrency=5 # 最大并发：10 spring.rabbitmq.listener.simple.max-concurrency=10 # 签收模式：手动签收 spring.rabbitmq.listener.simple.acknowledge-mode=manual # 限流策略：同一时间只有1条消息发送过来消费 spring.rabbitmq.listener.simple.prefetch=1 # Server配置 server.servlet.context-path=/ server.port=8082 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
4.编写Application类
package com.myimooc.rabbitmq.consumer;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
/**
* <br>
* 标题: 启动类<br>
* 描述: 启动类<br>
* 时间: 2018/09/06<br>
*
* @author zc
*/
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
第三章：可靠性投递
3-1 设计方案
保障100%消息投递成功设计方案（一）
3-2 代码详解
因篇幅限制，源码请到github地址查看，这里仅展现核心关键类
1.编写OrderSender类
package com.myimooc.rabbitmq.ha.producer;
import com.myimooc.rabbitmq.entity.Order;
import com.myimooc.rabbitmq.ha.constant.Constants;
import com.myimooc.rabbitmq.ha.dao.mapper.BrokerMessageLogMapper;
import com.myimooc.rabbitmq.ha.dao.po.BrokerMessageLogPO;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.rabbit.support.CorrelationData;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
/**
* <br>
* 标题: 订单消息发送者<br>
* 描述: 订单消息发送者<br>
* 时间: 2018/09/06<br>
*
* @author zc
*/
@Component
public class OrderSender {
@Autowired
private RabbitTemplate rabbitTemplate;
@Autowired
private BrokerMessageLogMapper brokerMessageLogMapper;
/**
* 回调方法：confirm确认
*/
private final RabbitTemplate.ConfirmCallback confirmCallback = new RabbitTemplate.ConfirmCallback() {
@Override
public void confirm(CorrelationData correlationData, boolean ack, String cause) {
System.out.println("correlationData：" + correlationData);
String messageId = correlationData.getId();
if (ack) {
// 若是confirm返回成功，则进行更新
BrokerMessageLogPO messageLogPO = new BrokerMessageLogPO();
messageLogPO.setMessageId(messageId);
messageLogPO.setStatus(Constants.OrderSendStatus.SEND_SUCCESS);
brokerMessageLogMapper.changeBrokerMessageLogStatus(messageLogPO);
} else {
// 失败则进行具体的后续操做：重试或者补偿等
System.out.println("异常处理...");
}
}
};
/**
* 发送订单
*
* @param order 订单
*/
public void send(Order order) {
// 设置回调方法
this.rabbitTemplate.setConfirmCallback(confirmCallback);
// 消息ID
CorrelationData correlationData = new CorrelationData(order.getMessageId());
// 发送消息
this.rabbitTemplate.convertAndSend("order-exchange", "order.a", order, correlationData);
}
}
2.编写OrderService类
package com.myimooc.rabbitmq.ha.service;
import com.myimooc.rabbitmq.entity.Order;
import com.myimooc.rabbitmq.ha.constant.Constants;
import com.myimooc.rabbitmq.ha.dao.mapper.BrokerMessageLogMapper;
import com.myimooc.rabbitmq.ha.dao.mapper.OrderMapper;
import com.myimooc.rabbitmq.ha.dao.po.BrokerMessageLogPO;
import com.myimooc.rabbitmq.ha.producer.OrderSender;
import com.myimooc.rabbitmq.ha.util.FastJsonConvertUtils;
import org.apache.commons.lang3.time.DateUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.Date;
/**
* <br>
* 标题: 订单服务<br>
* 描述: 订单服务<br>
* 时间: 2018/09/07<br>
*
* @author zc
*/
@Service
public class OrderService {
@Autowired
private OrderMapper orderMapper;
@Autowired
private BrokerMessageLogMapper brokerMessageLogMapper;
@Autowired
private OrderSender orderSender;
/**
* 建立订单
*
* @param order 订单
*/
public void create(Order order) {
// 当前时间
Date orderTime = new Date();
// 业务数据入库
this.orderMapper.insert(order);
// 消息日志入库
BrokerMessageLogPO messageLogPO = new BrokerMessageLogPO();
messageLogPO.setMessageId(order.getMessageId());
messageLogPO.setMessage(FastJsonConvertUtils.convertObjectToJson(order));
messageLogPO.setTryCount(0);
messageLogPO.setStatus(Constants.OrderSendStatus.SENDING);
messageLogPO.setNextRetry(DateUtils.addMinutes(orderTime, Constants.ORDER_TIMEOUT));
this.brokerMessageLogMapper.insert(messageLogPO);
// 发送消息
this.orderSender.send(order);
}
}
3.编写RetryMessageTask类
package com.myimooc.rabbitmq.ha.task;
import com.myimooc.rabbitmq.entity.Order;
import com.myimooc.rabbitmq.ha.constant.Constants;
import com.myimooc.rabbitmq.ha.dao.mapper.BrokerMessageLogMapper;
import com.myimooc.rabbitmq.ha.dao.po.BrokerMessageLogPO;
import com.myimooc.rabbitmq.ha.producer.OrderSender;
import com.myimooc.rabbitmq.ha.util.FastJsonConvertUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;
import java.util.List;
/**
* <br>
* 标题: 重发消息定时任务<br>
* 描述: 重发消息定时任务<br>
* 时间: 2018/09/07<br>
*
* @author zc
*/
@Component
public class RetryMessageTask {
private Logger logger = LoggerFactory.getLogger(getClass());
@Autowired
private OrderSender orderSender;
@Autowired
private BrokerMessageLogMapper brokerMessageLogMapper;
/**
* 启动完成3秒后开始执行，每隔10秒执行一次
*/
@Scheduled(initialDelay = 3000, fixedDelay = 10000)
public void retrySend() {
logger.debug("重发消息定时任务开始");
// 查询 status = 0 和 timeout 的消息日志
List<BrokerMessageLogPO> pos = this.brokerMessageLogMapper.listSendFailureAndTimeoutMessage();
for (BrokerMessageLogPO po : pos) {
logger.debug("处理消息日志：{}",po);
if (po.getTryCount() >= Constants.MAX_RETRY_COUNT) {
// 更新状态为失败
BrokerMessageLogPO messageLogPO = new BrokerMessageLogPO();
messageLogPO.setMessageId(po.getMessageId());
messageLogPO.setStatus(Constants.OrderSendStatus.SEND_FAILURE);
this.brokerMessageLogMapper.changeBrokerMessageLogStatus(messageLogPO);
} else {
// 进行重试，重试次数+1
this.brokerMessageLogMapper.updateRetryCount(po);
Order reSendOrder = FastJsonConvertUtils.convertJsonToObject(po.getMessage(), Order.class);
try {
this.orderSender.send(reSendOrder);
} catch (Exception ex) {
// 异常处理
logger.error("消息发送异常：{}", ex);
}
}
}
logger.debug("重发消息定时任务结束");
}
}
4.编写ApplicationTest类
package com.myimooc.rabbitmq.ha;
import com.myimooc.rabbitmq.entity.Order;
import com.myimooc.rabbitmq.ha.service.OrderService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import java.util.UUID;
/**
* <br>
* 标题: 订单建立测试<br>
* 描述: 订单建立测试<br>
* 时间: 2018/09/07<br>
*
* @author zc
*/
@RunWith(SpringRunner.class)
@SpringBootTest
public class ApplicationTest {
@Autowired
private OrderService orderService;
@Test
public void testCreateOrder(){
Order order = new Order();
order.setId(String.valueOf(System.currentTimeMillis()));
order.setName("测试建立订单");
order.setMessageId(System.currentTimeMillis() + "$" + UUID.randomUUID().toString().replaceAll("-",""));
this.orderService.create(order);
}
}
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