//Publisher
public void testSendMessage() throws IOException, TimeoutException {
// 1.建立连接
ConnectionFactory factory = new ConnectionFactory();
// 1.1.设置连接参数,分别是:主机名、端口号、vhost、用户名、密码
factory.setHost("192.168.150.101");
factory.setPort(5672);
factory.setVirtualHost("/");
factory.setUsername("itcast");
factory.setPassword("123321");
// 1.2.建立连接
Connection connection = factory.newConnection();
// 2.创建通道Channel
Channel channel = connection.createChannel();
// 3.创建队列
String queueName = "simple.queue";
channel.queueDeclare(queueName, false, false, false, null);
// 4.发送消息
String message = "hello, rabbitmq!";
channel.basicPublish("", queueName, null, message.getBytes());
System.out.println("发送消息成功:【" + message + "】");
// 5.关闭通道和连接
channel.close();
connection.close();
}
//Consumer
public static void main(String[] args) throws IOException, TimeoutException {
// 1.建立连接
ConnectionFactory factory = new ConnectionFactory();
// 1.1.设置连接参数,分别是:主机名、端口号、vhost、用户名、密码
factory.setHost("192.168.124.150");
factory.setPort(5672);
factory.setVirtualHost("/");
factory.setUsername("itcast");
factory.setPassword("123321");
// 1.2.建立连接
Connection connection = factory.newConnection();
// 2.创建通道Channel
Channel channel = connection.createChannel();
// 3.创建队列
String queueName = "simple.queue";
channel.queueDeclare(queueName, false, false, false, null);
// 4.订阅消息
channel.basicConsume(queueName, true, new DefaultConsumer(channel){
@Override
public void handleDelivery(String consumerTag, Envelope envelope,
AMQP.BasicProperties properties, byte[] body) throws IOException {
// 5.处理消息
String message = new String(body);
System.out.println("接收到消息:【" + message + "】");
}
});
System.out.println("等待接收消息。。。。");
}
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-amqpartifactId>
dependency>
spring:
rabbitmq:
host: 192.168.150.101 # rabbitMQ的ip地址
port: 5672 # 端口
username: itcast
password: 123321
virtual-host: /
@Autowired
private RabbitTemplate rabbitTemplate;
@Test
public void testSendMessage2SimpleQueue() {
String queueName = "simple.queue";
String message = "hello, spring amqp!";
rabbitTemplate.convertAndSend(queueName, message);
}
spring:
rabbitmq:
host: 192.168.150.101 # rabbitMQ的ip地址
port: 5672 # 端口
username: itcast
password: 123321
virtual-host: /
//定义的类记得加注解
@Component
public class SpringRabbitListener {
//方法需要加RabbitListener注解
@RabbitListener(queues = "simple.queue")
public void listenSimpleQueue(String msg) {
System.out.println("消费者接收到simple.queue的消息:【" + msg + "】");
}
}
//Publisher
public void testSendMessage2WorkQueue() throws InterruptedException {
String queueName = "simple.queue";
String message = "hello, message__";
for (int i = 1; i <= 50; i++) {
rabbitTemplate.convertAndSend(queueName, message + i);
Thread.sleep(20);
}
}
//Consumer
@RabbitListener(queues = "simple.queue")
public void listenWorkQueue1(String msg) throws InterruptedException {
System.out.println("消费者1接收到消息:【" + msg + "】" + LocalTime.now());
Thread.sleep(20);
}
@RabbitListener(queues = "simple.queue")
public void listenWorkQueue2(String msg) throws InterruptedException {
System.err.println("消费者2........接收到消息:【" + msg + "】" + LocalTime.now());
Thread.sleep(200);
}
spring:
rabbitmq:
host: 192.168.150.101 # rabbitMQ的ip地址
port: 5672 # 端口
username: itcast
password: 123321
virtual-host: /
listener:
simple:
prefetch: 1
Publisher
//Publisher
public void testSendFanoutExchange() {
// 交换机名称
String exchangeName = "itcast.fanout";
// 消息
String message = "hello, every one!";
// 发送消息
rabbitTemplate.convertAndSend(exchangeName, "", message);
}
消费者可以用两种办法
// 其一:设置配置类
@Configuration
public class FanoutConfig {
@Bean
public FanoutExchange fanoutExchange(){
return new FanoutExchange("itcast.fanout");
}
// fanout.queue1
@Bean
public Queue fanoutQueue1(){
return new Queue("fanout.queue1");
}
// 绑定队列1到交换机
@Bean
public Binding fanoutBinding1(Queue fanoutQueue1, FanoutExchange fanoutExchange){
return BindingBuilder
.bind(fanoutQueue1)
.to(fanoutExchange);
}
// fanout.queue2
@Bean
public Queue fanoutQueue2(){
return new Queue("fanout.queue2");
}
// 绑定队列2到交换机
@Bean
public Binding fanoutBinding2(Queue fanoutQueue2, FanoutExchange fanoutExchange){
return BindingBuilder
.bind(fanoutQueue2)
.to(fanoutExchange);
}
@Bean
public Queue objectQueue(){
return new Queue("object.queue");
}
}
//其二:直接监听
@RabbitListener(queues = "fanout.queue1")
public void listenFanoutQueue1(String msg) {
System.out.println("消费者接收到fanout.queue1的消息:【" + msg + "】");
}
@RabbitListener(queues = "fanout.queue2")
public void listenFanoutQueue2(String msg) {
System.out.println("消费者接收到fanout.queue2的消息:【" + msg + "】");
}
Publisher
public void testSendDirectExchange() {
// 交换机名称
String exchangeName = "itcast.direct";
// 消息
String message = "hello, red!";
// 发送消息,red就是指定的BindingKey,可以改成其他的
rabbitTemplate.convertAndSend(exchangeName, "red", message);
}
Consumer
@RabbitListener(bindings = @QueueBinding(
value = @Queue(name = "direct.queue1"),
exchange = @Exchange(name = "itcast.direct", type = ExchangeTypes.DIRECT),
key = {"red", "blue"}
))
public void listenDirectQueue1(String msg){
System.out.println("消费者接收到direct.queue1的消息:【" + msg + "】");
}
@RabbitListener(bindings = @QueueBinding(
value = @Queue(name = "direct.queue2"),
exchange = @Exchange(name = "itcast.direct", type = ExchangeTypes.DIRECT),
key = {"red", "yellow"}
))
public void listenDirectQueue2(String msg){
System.out.println("消费者接收到direct.queue2的消息:【" + msg + "】");
}
Publisher
public void testSendTopicExchange() {
// 交换机名称
String exchangeName = "itcast.topic";
// 消息
String message = "今天天气不错,我的心情好极了!";
// 发送消息
rabbitTemplate.convertAndSend(exchangeName, "china.weather", message);
}
Consumer
@RabbitListener(bindings = @QueueBinding(
value = @Queue(name = "topic.queue1"),
exchange = @Exchange(name = "itcast.topic", type = ExchangeTypes.TOPIC),
key = "china.#"
))
public void listenTopicQueue1(String msg){
System.out.println("消费者接收到topic.queue1的消息:【" + msg + "】");
}
@RabbitListener(bindings = @QueueBinding(
value = @Queue(name = "topic.queue2"),
exchange = @Exchange(name = "itcast.topic", type = ExchangeTypes.TOPIC),
key = "#.news"
))
public void listenTopicQueue2(String msg){
System.out.println("消费者接收到topic.queue2的消息:【" + msg + "】");
}
<dependency>
<groupId>com.fasterxml.jackson.coregroupId>
<artifactId>jackson-databindartifactId>
dependency>
在publisher和consumer服务的启动程序中声明MessageConverter,声明后底层就会自动将消息进行JSON序列化
@Bean
public MessageConverter messageConverter(){
return new Jackson2JsonMessageConverter();
}
然后consumer正常接受消息
//basicConsume的第二个参数就是关闭自动应答
channel.basicConsume(TASK_QUEUE_NAME,false,deliverCallback,consumerTag->());
//consumer的核心代码
Channel channel=RabbitUtils.getChannel();
channel.queueDeclare(TASK_QUEUE_NAME,false,false,false,null);
DeliverCallback deliverCallback=(consumerTag,delivery)->{
String message=new String(delivery.getBody(),"UTF-8");
//第一个参数指消息标记Tag
//第二个参数指是否批量应答消息,false指只应答当前传递的消息
channel.basicAck(delivery.getEnvelope().getDeliveryTag(),false);
}
//basicConsume的第二个参数就是关闭自动应答
channel.basicConsume(TASK_QUEUE_NAME,false,deliverCallback,consumerTag->());
//消费者将通道和队列绑定时将第二个参数设置为true
//参数依次为Queue名称、是否持久化、是否排外(加锁)、是否自动删除该队列、设置队列的其他一些参数
channel.queueDeclare(ACK_QUEUE_NAME,true,false,false,null);
//生产者添加MessageProperties.PERSISTENT_TEXT_PLAIN参数
//参数依次为Exchange名称、Queue名称(或者说路由地址)、消息的配置属性(通常为null)、消息实体
channel.basicPublish("",TASK_QUEUE_NAME,MessageProperties.PERSISTENT_TEXT_PLAIN,message.getBytes("UTF-8"));
//在创建channel后,调用confirmSelect方法即可
Channel channel=connection.createChannel();
channel.confirmSelect();
//核心代码
//即调用waitForConfirms等待发布的确认
for(...){
channel.basicPublish("",queueName,null,message.getBytes());
boolean flag=channel.waitForConfirms();
if(flag){
//TODO 其他业务
}
}
//核心代码
for(...){
channel.basicPublish("",queueName,null,message.getBytes());
count++;
if(count%10==0){
channel.waitForConfirms();
//TODO 其他业务
}
}
//发布者模块的核心代码
//消息确认成功 回调函数
//两个参数分别表示消息的标记和是否为批量确认
ConfirmCallback ackCallback=(deliveryTag,multiple)->{
System.out.println("确认的消息:"+deliveryTag);
};
//消息确认失败 回调函数
ConfirmCallback nackCallback=(deliveryTag,multiple)->{
System.out.println("未确认的消息:"+deliveryTag);
//TODO 其他业务
};
//准备消息的监听器,监听哪些消息成功或失败
channel.addConfirmListener(ackCallback,nackCallback);
//批量发送消息
for(...){
channel.basicPublish("",queueName,null,message.getBytes());
}