import com.rabbitmq.client.*;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
/**
* 验证通过信道 Channel 的 basicPublish() 方法发送消息，发送一条带有 headers 的消息
* @author hxstrive.com
* @date 2022年2月17日13:59:29
*/
public class PushMessage4 {
private static final String EXCHANGE_NAME = "exchange_" +
PushMessage4.class.getSimpleName();
/**
* 发送消息
*/
private void sender() {
Connection connection = null;
try {
// 创建连接
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("127.0.0.1");
factory.setPort(5672);
connection = factory.newConnection();
// 创建通道
Channel channel = connection.createChannel();
channel.exchangeDeclare(EXCHANGE_NAME, "topic");
// 发送消息
System.out.println("[Send] Sending Message...");
byte[] msg = "hello wrold".getBytes();
Map<String, Object> headers = new HashMap<String, Object>();
headers.put("location", "here");
headers.put("time", "today");
channel.basicPublish(EXCHANGE_NAME, "www.hxstrive.com",
new AMQP.BasicProperties.Builder()
.headers(headers)
.build(), msg);
} catch(Exception e) {
e.printStackTrace();
} finally {
if ( connection != null ) {
try {
connection.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
/**
* 消费消息
*/
private void consumer() {
try {
// 创建连接
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("127.0.0.1");
factory.setPort(5672);
Connection connection = factory.newConnection();
// 创建通道
Channel channel = connection.createChannel();
channel.exchangeDeclare(EXCHANGE_NAME, "topic");
// 绑定exchange与queue
String queueName = channel.queueDeclare().getQueue();
channel.queueBind(queueName, EXCHANGE_NAME, "*.hxstrive.com");
System.out.println("[Receive] Waiting Message...");
// 消费消息
channel.basicConsume(queueName, true, new DefaultConsumer(channel){
@Override
public void handleDelivery(String consumerTag, Envelope envelope,
AMQP.BasicProperties properties, byte[] body) throws IOException {
// 输出收到的消息和消息头
System.out.println("[Receive] Receive Message :: " + new String(body));
Map<String,Object> headers = properties.getHeaders();
System.out.println("[Receive] Headers location = " +
headers.get("location"));
System.out.println("[Receive] Headers time = " +
headers.get("time"));
}
});
} catch(Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
PushMessage4 demo = new PushMessage4();
demo.consumer();
demo.sender();
}
}
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