在关闭应用服务器时，在调用ActiveMQ连接的close()方法之前，先调用disconnect()方法。这样可以保证ActiveMQ连接正确关闭，避免阻止应用服务器停止。

示例代码：

import javax.jms.Connection;
import org.apache.activemq.ActiveMQConnectionFactory;

public class ActiveMQDemo {
    private Connection connection;
    private ActiveMQConnectionFactory factory;
 
    public void connect() {
        try {
            factory = new ActiveMQConnectionFactory("tcp://localhost:61616");
            connection = factory.createConnection();
            connection.start();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
 
    public void disconnect() {
        try {
            connection.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
 
    public static void main(String[] args) {
        ActiveMQDemo activeMQDemo = new ActiveMQDemo();
        activeMQDemo.connect();
 
        //业务逻辑代码...
 
        activeMQDemo.disconnect();
    }
}