中间件——（四）rabbitMQ整合Spring

rabbitMQ整合Spring

【一】前言

rabbitmq和spring进行整合，使用到的jar包有：

<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>

【二】构建项目

这个地方构建的项目虽然是springboot但是其中使用的spring进行整合的

【三】maven依赖

以下为全部的maven依赖：

<?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>

	<groupId>com.bfxy</groupId>
	<artifactId>rabbitmq-spring</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>rabbitmq-spring</name>
	<description>rabbitmq-spring</description>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>1.5.14.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<java.version>1.8</java.version>
	</properties>

	<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>
		<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>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>
</project>

【四】注入bean

把连接对象注入
RabbitAdmin注入
以及申明我们的交换机，队列
绑定交换机和队列

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

	@Bean
	public ConnectionFactory connectionFactory(){
		CachingConnectionFactory connectionFactory = new CachingConnectionFactory();
		connectionFactory.setAddresses("192.168.179.130:5672");
		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();
		/*DefaultJackson2JavaTypeMapper javaTypeMapper = new DefaultJackson2JavaTypeMapper();
		jsonConvert.setJavaTypeMapper(javaTypeMapper);*/
		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;
    	
    }
}

【五】消息转换器

定义消息的转换器

• ImageMessageConverter

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 = "e:/010_test/" + fileName + "." + extName;
		File f = new File(path);
		try {
			Files.copy(new ByteArrayInputStream(body), f.toPath());
		} catch (IOException e) {
			e.printStackTrace();
		}
		return f;
	}

}

• PDFMessageConverter

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 = "e:/010_test/" + fileName + ".pdf";
		File f = new File(path);
		try {
			Files.copy(new ByteArrayInputStream(body), f.toPath());
		} catch (IOException e) {
			e.printStackTrace();
		}
		return f;
	}

}

• TextMessageConverter

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();
	}

}

【六】发送消息

发送测试消息：

@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__", "com.bfxy.spring.entity.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__", "com.bfxy.spring.entity.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("C:\\Users\\华硕电脑\\Desktop\\秋招", "冯文-后端开发工程师.pdf"));
			MessageProperties messageProperties = new MessageProperties();
			messageProperties.setContentType("application/pdf");
			Message message = new Message(body, messageProperties);
			rabbitTemplate.send("", "pdf_queue", message);
	}
	

}

gitHub项目地址：https://github.com/fengsri/Spring-RabbitMQ

【七】链接

• 中间件——（1）rabbitMQ的安装
• 中间件——（2）rabbitMQ的相关知识点及概念
• 中间件——（3）rabbitMQ的基本使用
• https://www.cnblogs.com/williamjie/p/9481774.html
• https://www.cnblogs.com/woms/p/7040902.html