前言
Routing模式通过routingKey，决定发送和接收路径架构如下：
image.png
代码
- build.gradle
plugins {
id 'java'
}
group 'com.nick'
version '1.0-SNAPSHOT'
sourceCompatibility = 1.8
repositories {
mavenCentral()
}
dependencies {
testCompile group: 'junit', name: 'junit', version: '4.12'
compile group: 'com.rabbitmq', name: 'amqp-client', version: '5.2.0'
compile group: 'org.slf4j', name: 'slf4j-api', version: '1.7.25'
compile group: 'org.slf4j', name: 'slf4j-simple', version: '1.7.25'
compile group: 'org.projectlombok', name: 'lombok', version: '1.18.0'
}
- ReceiveLogsDirect.java
package com.nick.Routing;
import com.rabbitmq.client.*;
import java.io.IOException;
public class ReceiveLogsDirect {
private static final String EXCHANGE_NAME = "direct_logs";
public static void main(String[] argv) throws Exception {
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("192.168.5.136");
Connection connection = factory.newConnection();
Channel channel = connection.createChannel();
channel.exchangeDeclare(EXCHANGE_NAME, "direct");
String queueName = channel.queueDeclare().getQueue();
channel.queueBind(queueName, EXCHANGE_NAME, "ERROR");
channel.queueBind(queueName, EXCHANGE_NAME, "INFO");
System.out.println(" [*] Waiting for messages. To exit press CTRL+C");
Consumer consumer = new DefaultConsumer(channel) {
@Override
public void handleDelivery(String consumerTag, Envelope envelope,
AMQP.BasicProperties properties, byte[] body) throws IOException {
String message = new String(body, "UTF-8");
System.out.println(" [x] Received '" + envelope.getRoutingKey() + "':'" + message + "'");
}
};
channel.basicConsume(queueName, true, consumer);
}
}
- EmitDebugLogDirect.java
package com.nick.Routing;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import java.util.concurrent.TimeoutException;
public class EmitDebugLogDirect {
private static final String EXCHANGE_NAME = "direct_logs";
public static void main(String[] argv)
throws java.io.IOException, TimeoutException {
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("192.168.5.136");
Connection connection = factory.newConnection();
Channel channel = connection.createChannel();
channel.exchangeDeclare(EXCHANGE_NAME, "direct");
String severity = "DEBUG";
String message = "debug message";
channel.basicPublish(EXCHANGE_NAME, severity, null, message.getBytes());
System.out.println(" [x] Sent '" + severity + "':'" + message + "'");
channel.close();
connection.close();
}
}
- EmitErrorLogDirect.java
package com.nick.Routing;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import java.util.concurrent.TimeoutException;
public class EmitErrorLogDirect {
private static final String EXCHANGE_NAME = "direct_logs";
public static void main(String[] argv)
throws java.io.IOException, TimeoutException {
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("192.168.5.136");
Connection connection = factory.newConnection();
Channel channel = connection.createChannel();
channel.exchangeDeclare(EXCHANGE_NAME, "direct");
String severity = "ERROR";
String message = "error message";
channel.basicPublish(EXCHANGE_NAME, severity, null, message.getBytes());
System.out.println(" [x] Sent '" + severity + "':'" + message + "'");
channel.close();
connection.close();
}
}
测试
- 先执行接收；
- 分别执行发送debug和error;
- 在接收窗口上可以看到error消息有收到，debug接收不到；
