1. AMQP 核心组件

RabbitAdmin

SpringAMQP声明

RabbitTemplate

SimpleMessageListenerContainer

MessageListenerAdapter

MessageConverter

2. RabbitAdmin

注意：

autoStartUp必须要设置为true,否则Spring容器不会加载RabbitAdmin类

RabbitAdmin底层实现就是从Spring容器中获取Exchange、Bingding、RoutingKey以及Queue的@Bean声明

使用RabbitTemplate的execute方法执行对应的什么、修改、删除等一系列RabbitMQ基础功能操作

例如：添加一个交换机、删除一个绑定、清空一个队列里的消息等等

3. SpringAMQP声明和RabbitTemplate

SpringAMQP声明

以前，在Rabbit基础API里面声明一个Exchange、声明一个绑定、一个队列

ConnectionFactory connectionFactory = new ConnectionFactory();
connectionFactory.setHost("192.168.11.76");
connectionFactory.setPort(5672);
connectionFactory.setVirtualHost("/");

Connection connection = connectionFactory.newConnection();
Channel channel = connection.createChannel();

String exchangeName = "test_ack_exchange";
String queueName = "test_ack_queue";
String routingKey = "ack.#";

channel.exchangeDeclare(exchangeName, "topic", true, false, null);
channel.queueDeclare(queueName, true, false, false, null);
channel.queueBind(queueName, exchangeName, routingKey);

// 手工签收 必须要关闭 autoAck = false
channel.basicConsume(queueName, false, new MyConsumer(channel));

使用SpringAMQP去声明，就需要使用SpringAMQP的如下模式，即声明@Bean方式

 /**  
     * 针对消费者配置  
     * 1. 设置交换机类型  
     * 2. 将队列绑定到交换机  
        FanoutExchange: 将消息分发到所有的绑定队列，无routingkey的概念  
        HeadersExchange ：通过添加属性key-value匹配  
        DirectExchange:按照routingkey分发到指定队列  
        TopicExchange:多关键字匹配  
     */  
    @Bean  
    public TopicExchange exchange001() {  
        return new TopicExchange("topic001", true, false);  
    }  

    @Bean  
    public Queue queue001() {  
        return new Queue("queue001", true); //队列持久  
    }  
    
    @Bean  
    public Binding binding001() {  
        return BindingBuilder.bind(queue001()).to(exchange001()).with("spring.*");  
    }

RabbitTemplate

RabbitTemplate，即消息模板

我们在与SpringAMQP整合的时候进行发送消息的关键词

该类提供了丰富的发送消息方法，包括可靠性投递消息方法、回调监听消息接口ConfirmCallback、返回值确认接口ReturnCallback等等。同样我们需要进行注入到Spring容器中，然后直接使用

在与Spring整合时需要实例化，但是在与SpringBoot整合时，在配置文件里添加配置即可

4. SimpleMessageListenerContainer

简单消息监听容器

这个类非常的强大，我们可以对它进行很多设置，对于消费者的配置项，这个类都可以满足

监听队列(多个队列)、自动启动、自动声明功能

设置事务特性、事务管理器、事务属性、事务容器(并发)、是否开启事务、回滚消息等

设置消费者数量、最小最大数量、批量消费

设置消息确认和自动确认模式、是否重回队列、异常捕捉handler函数

设置消费者标签生成策略、是否独占模式、消费者属性等

设置具体的监听器、消息转换器等等。

注意：

SimpleMessageListenerContainer可以进行动态设置，比如在运行中的应用可以动态的修改其消费者数量的大小、接收消息的模式等

很多机遇RabbitMQ的自制定话后端管控台在进行动态设置的时候，也是根据这一特性去实现的。所以可以看出SpringAMQP非常的强大

SimpleMessageListenerContainer原理：为什么可以动态感知配置变更？

SimpleMessageListenerContainer用一个List<String> 来存储所有queue，当要添加queue时，就往这个List添加，然后调用queuesChanged()方法，把所有的consumer都取消订阅，然后把他们都移除，然后有多少个consumer再重新new相同数量的consumer出来，然后每个consumer都把List中的每个都都订阅，到此就完成了。

5. MessageListenerAdapter

默认方法名就是叫handleMessage。当然也可以自己去指定设置。通过messageListenerAdapter的代码我们可以看出如下核心属性

defaultListenerMethod默认监听方法名称：用于设置监听方法名称

Delegate 委托对象：实际真实的委托对象，用于处理消息

queueOrTagToMethodName 队列标识与方法名称组成集合

可以一一进行队列与方法名称的匹配

队列和方法名称绑定，即指定队列里的消息会被绑定的方法所接受处理

6. MessageConverter

我们在进行发送消息的时候，正常情况下消息体为二进制的数据方式进行传输，如果希望内部帮我们进行转换，或者指定自定义的转换器，就需要用到MessageConverter

自定义常用转换器：MessageConverter，一般来讲都需要实现这个接口
重写下面两个方法：

toMessage:java对象转换为Message

fromMessage:Message对象转换为java对象

Json转换器：Jackson2JsonMessageConverter:可以进行Java对象的转换功能
DefaultJackson2JavaTypeMapper映射器：可以进行java对象的映射关系
自定义二进制转换器：比如图片类型、PDF、PPT、流媒体

7 代码演示

7.1 引入Pom文件

<dependencies>
	<dependency>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter</artifactId>
	</dependency>
	<dependency>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-test</artifactId>
		<scope>test</scope>
	</dependency>

	<!--amqp-->
	<dependency>
		<groupId>com.rabbitmq</groupId>
		<artifactId>amqp-client</artifactId>
		<version>3.6.5</version>
	</dependency>
	<dependency>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-amqp</artifactId>
	</dependency>
</dependencies>

7.2 配置类

package com.bfxy.spring;

import java.util.UUID;

import org.springframework.amqp.core.AcknowledgeMode;
import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.Queue;
import org.springframework.amqp.core.TopicExchange;
import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitAdmin;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer;
import org.springframework.amqp.rabbit.listener.adapter.MessageListenerAdapter;
import org.springframework.amqp.support.ConsumerTagStrategy;
import org.springframework.amqp.support.converter.ContentTypeDelegatingMessageConverter;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;

import com.bfxy.spring.adapter.MessageDelegate;
import com.bfxy.spring.convert.ImageMessageConverter;
import com.bfxy.spring.convert.PDFMessageConverter;
import com.bfxy.spring.convert.TextMessageConverter;

@Configuration
@ComponentScan({"com.bfxy.spring.*"})
public class RabbitMQConfig {

	@Bean
	public ConnectionFactory connectionFactory(){
		CachingConnectionFactory connectionFactory = new CachingConnectionFactory();
		connectionFactory.setAddresses("192.168.11.76:5672");
		connectionFactory.setUsername("guest");
		connectionFactory.setPassword("guest");
		connectionFactory.setVirtualHost("/");
		return connectionFactory;
	}
	
	@Bean
	public RabbitAdmin rabbitAdmin(ConnectionFactory connectionFactory) {
		RabbitAdmin rabbitAdmin = new RabbitAdmin(connectionFactory);
		rabbitAdmin.setAutoStartup(true);
		return rabbitAdmin;
	}
	
    /**  
     * 针对消费者配置  
     * 1. 设置交换机类型  
     * 2. 将队列绑定到交换机  
        FanoutExchange: 将消息分发到所有的绑定队列，无routingkey的概念  
        HeadersExchange ：通过添加属性key-value匹配  
        DirectExchange:按照routingkey分发到指定队列  
        TopicExchange:多关键字匹配  
     */  
    @Bean  
    public TopicExchange exchange001() {  
        return new TopicExchange("topic001", true, false);  
    }  

    @Bean  
    public Queue queue001() {  
        return new Queue("queue001", true); //队列持久  
    }  
    
    @Bean  
    public Binding binding001() {  
        return BindingBuilder.bind(queue001()).to(exchange001()).with("spring.*");  
    }  
    
    @Bean  
    public TopicExchange exchange002() {  
        return new TopicExchange("topic002", true, false);  
    }  
    
    @Bean  
    public Queue queue002() {  
        return new Queue("queue002", true); //队列持久  
    }
    
    @Bean  
    public Binding binding002() {  
        return BindingBuilder.bind(queue002()).to(exchange002()).with("rabbit.*");  
    } 
    
    @Bean  
    public Queue queue003() {  
        return new Queue("queue003", true); //队列持久  
    }
    
    @Bean  
    public Binding binding003() {  
        return BindingBuilder.bind(queue003()).to(exchange001()).with("mq.*");  
    } 
    
    @Bean  
    public Queue queue_image() {  
        return new Queue("image_queue", true); //队列持久  
    }
    
    @Bean  
    public Queue queue_pdf() {  
        return new Queue("pdf_queue", true); //队列持久  
    }
    
    
    @Bean
    public RabbitTemplate rabbitTemplate(ConnectionFactory connectionFactory) {
    	RabbitTemplate rabbitTemplate = new RabbitTemplate(connectionFactory);
    	return rabbitTemplate;
    }
    
    @Bean
    public SimpleMessageListenerContainer messageContainer(ConnectionFactory connectionFactory) {
    	
    	SimpleMessageListenerContainer container = new SimpleMessageListenerContainer(connectionFactory);
    	container.setQueues(queue001(), queue002(), queue003(), queue_image(), queue_pdf());
    	container.setConcurrentConsumers(1);
    	container.setMaxConcurrentConsumers(5);
    	container.setDefaultRequeueRejected(false);
    	container.setAcknowledgeMode(AcknowledgeMode.AUTO);
    	container.setExposeListenerChannel(true);
    	container.setConsumerTagStrategy(new ConsumerTagStrategy() {
			@Override
			public String createConsumerTag(String queue) {
				return queue + "_" + UUID.randomUUID().toString();
			}
		});
    	/**
    	container.setMessageListener(new ChannelAwareMessageListener() {
			@Override
			public void onMessage(Message message, Channel channel) throws Exception {
				String msg = new String(message.getBody());
				System.err.println("----------消费者: " + msg);
			}
		});
    	*/
    	
    	/**
    	 * 1 适配器方式. 默认是有自己的方法名字的：handleMessage
    		// 可以自己指定一个方法的名字: consumeMessage
    		// 也可以添加一个转换器: 从字节数组转换为String
    	MessageListenerAdapter adapter = new MessageListenerAdapter(new MessageDelegate());
    	adapter.setDefaultListenerMethod("consumeMessage");
    	adapter.setMessageConverter(new TextMessageConverter());
    	container.setMessageListener(adapter);
    	*/
    	
    	/**
    	 * 2 适配器方式: 我们的队列名称 和 方法名称 也可以进行一一的匹配
    	 * 
    	MessageListenerAdapter adapter = new MessageListenerAdapter(new MessageDelegate());
    	adapter.setMessageConverter(new TextMessageConverter());
    	Map<String, String> queueOrTagToMethodName = new HashMap<>();
    	queueOrTagToMethodName.put("queue001", "method1");
    	queueOrTagToMethodName.put("queue002", "method2");
    	adapter.setQueueOrTagToMethodName(queueOrTagToMethodName);
    	container.setMessageListener(adapter);    	
    	*/
    	
        // 1.1 支持json格式的转换器
        /**
        MessageListenerAdapter adapter = new MessageListenerAdapter(new MessageDelegate());
        adapter.setDefaultListenerMethod("consumeMessage");
        
        Jackson2JsonMessageConverter jackson2JsonMessageConverter = new Jackson2JsonMessageConverter();
        adapter.setMessageConverter(jackson2JsonMessageConverter);
        
        container.setMessageListener(adapter);
        */
    	
        
        
        // 1.2 DefaultJackson2JavaTypeMapper & Jackson2JsonMessageConverter 支持java对象转换
        /**
        MessageListenerAdapter adapter = new MessageListenerAdapter(new MessageDelegate());
        adapter.setDefaultListenerMethod("consumeMessage");
        
        Jackson2JsonMessageConverter jackson2JsonMessageConverter = new Jackson2JsonMessageConverter();
        
        DefaultJackson2JavaTypeMapper javaTypeMapper = new DefaultJackson2JavaTypeMapper();
        jackson2JsonMessageConverter.setJavaTypeMapper(javaTypeMapper);
        
        adapter.setMessageConverter(jackson2JsonMessageConverter);
        container.setMessageListener(adapter);
        */
        
        
        //1.3 DefaultJackson2JavaTypeMapper & Jackson2JsonMessageConverter 支持java对象多映射转换
        /**
        MessageListenerAdapter adapter = new MessageListenerAdapter(new MessageDelegate());
        adapter.setDefaultListenerMethod("consumeMessage");
        Jackson2JsonMessageConverter jackson2JsonMessageConverter = new Jackson2JsonMessageConverter();
        DefaultJackson2JavaTypeMapper javaTypeMapper = new DefaultJackson2JavaTypeMapper();
        
        Map<String, Class<?>> idClassMapping = new HashMap<String, Class<?>>();
		idClassMapping.put("order", com.bfxy.spring.entity.Order.class);
		idClassMapping.put("packaged", com.bfxy.spring.entity.Packaged.class);
		
		javaTypeMapper.setIdClassMapping(idClassMapping);
		
		jackson2JsonMessageConverter.setJavaTypeMapper(javaTypeMapper);
        adapter.setMessageConverter(jackson2JsonMessageConverter);
        container.setMessageListener(adapter);
        */
        
        //1.4 ext convert
        
        MessageListenerAdapter adapter = new MessageListenerAdapter(new MessageDelegate());
        adapter.setDefaultListenerMethod("consumeMessage");
        
        //全局的转换器:
		ContentTypeDelegatingMessageConverter convert = new ContentTypeDelegatingMessageConverter();
		
		TextMessageConverter textConvert = new TextMessageConverter();
		convert.addDelegate("text", textConvert);
		convert.addDelegate("html/text", textConvert);
		convert.addDelegate("xml/text", textConvert);
		convert.addDelegate("text/plain", textConvert);
		
		Jackson2JsonMessageConverter jsonConvert = new Jackson2JsonMessageConverter();
		convert.addDelegate("json", jsonConvert);
		convert.addDelegate("application/json", jsonConvert);
		
		ImageMessageConverter imageConverter = new ImageMessageConverter();
		convert.addDelegate("image/png", imageConverter);
		convert.addDelegate("image", imageConverter);
		
		PDFMessageConverter pdfConverter = new PDFMessageConverter();
		convert.addDelegate("application/pdf", pdfConverter);
        
		
		adapter.setMessageConverter(convert);
		container.setMessageListener(adapter);
		
    	return container;
    	
    }
    
    

	
	
}

7.3 消息转换器

图片转换器

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.util.UUID;

import org.springframework.amqp.core.Message;
import org.springframework.amqp.core.MessageProperties;
import org.springframework.amqp.support.converter.MessageConversionException;
import org.springframework.amqp.support.converter.MessageConverter;

public class ImageMessageConverter implements MessageConverter {

	@Override
	public Message toMessage(Object object, MessageProperties messageProperties) throws MessageConversionException {
		throw new MessageConversionException(" convert error ! ");
	}

	@Override
	public Object fromMessage(Message message) throws MessageConversionException {
		System.err.println("-----------Image MessageConverter----------");
		
		Object _extName = message.getMessageProperties().getHeaders().get("extName");
		String extName = _extName == null ? "png" : _extName.toString();
		
		byte[] body = message.getBody();
		String fileName = UUID.randomUUID().toString();
		String path = "d:/010_test/" + fileName + "." + extName;
		File f = new File(path);
		try {
			Files.copy(new ByteArrayInputStream(body), f.toPath());
		} catch (IOException e) {
			e.printStackTrace();
		}
		return f;
	}

}

PDF转换器

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.util.UUID;

import org.springframework.amqp.core.Message;
import org.springframework.amqp.core.MessageProperties;
import org.springframework.amqp.support.converter.MessageConversionException;
import org.springframework.amqp.support.converter.MessageConverter;

public class PDFMessageConverter implements MessageConverter {

	@Override
	public Message toMessage(Object object, MessageProperties messageProperties) throws MessageConversionException {
		throw new MessageConversionException(" convert error ! ");
	}

	@Override
	public Object fromMessage(Message message) throws MessageConversionException {
		System.err.println("-----------PDF MessageConverter----------");
		
		byte[] body = message.getBody();
		String fileName = UUID.randomUUID().toString();
		String path = "d:/010_test/" + fileName + ".pdf";
		File f = new File(path);
		try {
			Files.copy(new ByteArrayInputStream(body), f.toPath());
		} catch (IOException e) {
			e.printStackTrace();
		}
		return f;
	}

}

文本转换器

import org.springframework.amqp.core.Message;
import org.springframework.amqp.core.MessageProperties;
import org.springframework.amqp.support.converter.MessageConversionException;
import org.springframework.amqp.support.converter.MessageConverter;

public class TextMessageConverter implements MessageConverter {

	@Override
	public Message toMessage(Object object, MessageProperties messageProperties) throws MessageConversionException {
		return new Message(object.toString().getBytes(), messageProperties);
	}

	@Override
	public Object fromMessage(Message message) throws MessageConversionException {
		String contentType = message.getMessageProperties().getContentType();
		if(null != contentType && contentType.contains("text")) {
			return new String(message.getBody());
		}
		return message.getBody();
	}

}

7.4 实体

public class Order {

	private String id;
	
	private String name;
	
	private String content;

	public Order() {
	}
	
	public Order(String id, String name, String content) {
		this.id = id;
		this.name = name;
		this.content = content;
	}

	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 getContent() {
		return content;
	}

	public void setContent(String content) {
		this.content = content;
	}
	
}

public class Packaged {

	private String id;
	
	private String name;
	
	private String description;
	
	public Packaged() {
	}
	
	public Packaged(String id, String name, String description) {
		this.id = id;
		this.name = name;
		this.description = description;
	}

	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 getDescription() {
		return description;
	}

	public void setDescription(String description) {
		this.description = description;
	}
	
	
}

7.5 测试类

import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.HashMap;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.amqp.AmqpException;
import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.DirectExchange;
import org.springframework.amqp.core.FanoutExchange;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.core.MessagePostProcessor;
import org.springframework.amqp.core.MessageProperties;
import org.springframework.amqp.core.Queue;
import org.springframework.amqp.core.TopicExchange;
import org.springframework.amqp.rabbit.core.RabbitAdmin;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import com.bfxy.spring.entity.Order;
import com.bfxy.spring.entity.Packaged;
import com.fasterxml.jackson.databind.ObjectMapper;

@RunWith(SpringRunner.class)
@SpringBootTest
public class ApplicationTests {

	@Test
	public void contextLoads() {
	}
	
	@Autowired
	private RabbitAdmin rabbitAdmin;
	
	@Test
	public void testAdmin() throws Exception {
		rabbitAdmin.declareExchange(new DirectExchange("test.direct", false, false));
		
		rabbitAdmin.declareExchange(new TopicExchange("test.topic", false, false));
		
		rabbitAdmin.declareExchange(new FanoutExchange("test.fanout", false, false));
		
		rabbitAdmin.declareQueue(new Queue("test.direct.queue", false));
		
		rabbitAdmin.declareQueue(new Queue("test.topic.queue", false));
		
		rabbitAdmin.declareQueue(new Queue("test.fanout.queue", false));
		
		rabbitAdmin.declareBinding(new Binding("test.direct.queue",
				Binding.DestinationType.QUEUE,
				"test.direct", "direct", new HashMap<>()));
		
		rabbitAdmin.declareBinding(
				BindingBuilder
				.bind(new Queue("test.topic.queue", false))		//直接创建队列
				.to(new TopicExchange("test.topic", false, false))	//直接创建交换机 建立关联关系
				.with("user.#"));	//指定路由Key
		
		
		rabbitAdmin.declareBinding(
				BindingBuilder
				.bind(new Queue("test.fanout.queue", false))		
				.to(new FanoutExchange("test.fanout", false, false)));
		
		//清空队列数据
		rabbitAdmin.purgeQueue("test.topic.queue", false);
	}
	
	@Autowired
	private RabbitTemplate rabbitTemplate;
	
	
	@Test
	public void testSendMessage() throws Exception {
		//1 创建消息
		MessageProperties messageProperties = new MessageProperties();
		messageProperties.getHeaders().put("desc", "信息描述..");
		messageProperties.getHeaders().put("type", "自定义消息类型..");
		Message message = new Message("Hello RabbitMQ".getBytes(), messageProperties);
		
		rabbitTemplate.convertAndSend("topic001", "spring.amqp", message, new MessagePostProcessor() {
			@Override
			public Message postProcessMessage(Message message) throws AmqpException {
				System.err.println("------添加额外的设置---------");
				message.getMessageProperties().getHeaders().put("desc", "额外修改的信息描述");
				message.getMessageProperties().getHeaders().put("attr", "额外新加的属性");
				return message;
			}
		});
	}
	
	@Test
	public void testSendMessage2() throws Exception {
		//1 创建消息
		MessageProperties messageProperties = new MessageProperties();
		messageProperties.setContentType("text/plain");
		Message message = new Message("mq 消息1234".getBytes(), messageProperties);
		
		rabbitTemplate.send("topic001", "spring.abc", message);
		
		rabbitTemplate.convertAndSend("topic001", "spring.amqp", "hello object message send!");
		rabbitTemplate.convertAndSend("topic002", "rabbit.abc", "hello object message send!");
	}
	
	@Test
	public void testSendMessage4Text() throws Exception {
		//1 创建消息
		MessageProperties messageProperties = new MessageProperties();
		messageProperties.setContentType("text/plain");
		Message message = new Message("mq 消息1234".getBytes(), messageProperties);
		
		rabbitTemplate.send("topic001", "spring.abc", message);
		rabbitTemplate.send("topic002", "rabbit.abc", message);
	}
	
	
	@Test
	public void testSendJsonMessage() throws Exception {
		
		Order order = new Order();
		order.setId("001");
		order.setName("消息订单");
		order.setContent("描述信息");
		ObjectMapper mapper = new ObjectMapper();
		String json = mapper.writeValueAsString(order);
		System.err.println("order 4 json: " + json);
		
		MessageProperties messageProperties = new MessageProperties();
		//这里注意一定要修改contentType为 application/json
		messageProperties.setContentType("application/json");
		Message message = new Message(json.getBytes(), messageProperties);
		
		rabbitTemplate.send("topic001", "spring.order", message);
	}
	
	@Test
	public void testSendJavaMessage() throws Exception {
		
		Order order = new Order();
		order.setId("001");
		order.setName("订单消息");
		order.setContent("订单描述信息");
		ObjectMapper mapper = new ObjectMapper();
		String json = mapper.writeValueAsString(order);
		System.err.println("order 4 json: " + json);
		
		MessageProperties messageProperties = new MessageProperties();
		//这里注意一定要修改contentType为 application/json
		messageProperties.setContentType("application/json");
		messageProperties.getHeaders().put("__TypeId__", "com.bfxy.spring.entity.Order");
		Message message = new Message(json.getBytes(), messageProperties);
		
		rabbitTemplate.send("topic001", "spring.order", message);
	}
	
	@Test
	public void testSendMappingMessage() throws Exception {
		
		ObjectMapper mapper = new ObjectMapper();
		
		Order order = new Order();
		order.setId("001");
		order.setName("订单消息");
		order.setContent("订单描述信息");
		
		String json1 = mapper.writeValueAsString(order);
		System.err.println("order 4 json: " + json1);
		
		MessageProperties messageProperties1 = new MessageProperties();
		//这里注意一定要修改contentType为 application/json
		messageProperties1.setContentType("application/json");
		messageProperties1.getHeaders().put("__TypeId__", "order");
		Message message1 = new Message(json1.getBytes(), messageProperties1);
		rabbitTemplate.send("topic001", "spring.order", message1);
		
		Packaged pack = new Packaged();
		pack.setId("002");
		pack.setName("包裹消息");
		pack.setDescription("包裹描述信息");
		
		String json2 = mapper.writeValueAsString(pack);
		System.err.println("pack 4 json: " + json2);

		MessageProperties messageProperties2 = new MessageProperties();
		//这里注意一定要修改contentType为 application/json
		messageProperties2.setContentType("application/json");
		messageProperties2.getHeaders().put("__TypeId__", "packaged");
		Message message2 = new Message(json2.getBytes(), messageProperties2);
		rabbitTemplate.send("topic001", "spring.pack", message2);
	}
	
	@Test
	public void testSendExtConverterMessage() throws Exception {
//			byte[] body = Files.readAllBytes(Paths.get("d:/002_books", "picture.png"));
//			MessageProperties messageProperties = new MessageProperties();
//			messageProperties.setContentType("image/png");
//			messageProperties.getHeaders().put("extName", "png");
//			Message message = new Message(body, messageProperties);
//			rabbitTemplate.send("", "image_queue", message);
		
			byte[] body = Files.readAllBytes(Paths.get("d:/002_books", "mysql.pdf"));
			MessageProperties messageProperties = new MessageProperties();
			messageProperties.setContentType("application/pdf");
			Message message = new Message(body, messageProperties);
			rabbitTemplate.send("", "pdf_queue", message);
	}
	

}

RabbitMQ精讲6：与Spring AMQP整合实战

1. AMQP 核心组件

2. RabbitAdmin

3. SpringAMQP声明和RabbitTemplate

SpringAMQP声明

RabbitTemplate

4. SimpleMessageListenerContainer

SimpleMessageListenerContainer原理：为什么可以动态感知配置变更？

5. MessageListenerAdapter

6. MessageConverter

7 代码演示

7.1 引入Pom文件

7.2 配置类

7.3 消息转换器

图片转换器

PDF转换器

文本转换器

7.4 实体

7.5 测试类

RabbitMQ精講1：主流MQ對比，爲什麼選擇RabbitMQ

常見面試問題1：ZooKeeper、Redis、Mysql、JVM、Spring、Dubbo

Kubernetes 控制器：從 Kubernetes 資源控制到開放應用模型、工作原理解讀

RabbitMQ精講5：深入RabbitMQ高級特性-限流、ACK、TTL和死信隊列

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