Absolutely, there are several practical ways to retrieve the list of Client IDs for currently connected persistent clients in ActiveMQ. Let me walk you through the most reliable approaches:

这是最适合快速查看的方式，不需要额外工具：

• 打开浏览器访问ActiveMQ Web控制台，默认地址是http://localhost:8161/admin（替换localhost为你的Broker主机IP/域名）
• 登录后，点击左侧菜单栏的Connections选项
• 在Connections列表中，找到Persistent列（标记为Y表示该客户端是持久化类型）
• 直接查看并提取对应行的Client ID列内容即可，你甚至可以复制整列数据导出使用

ActiveMQ exposes rich JMX MBeans for monitoring and management, which is a powerful way to fetch client info:

图形化工具（jconsole） #

• 启动本地的jconsole工具（自带在JDK中）
• 在连接界面选择"远程进程"，输入JMX连接地址：service:jmx:rmi:///jndi/rmi://<broker-host>:1099/jmxrmi（默认JMX端口是1099）
• 登录后（如果Broker有认证，输入对应账号密码），展开org.apache.activemq -> Broker -> 你的Broker名称 -> Connections
• 逐个查看每个连接的属性：找到clientId和isPersistent，筛选出isPersistent为true的条目，记录对应的clientId

命令行工具（jmxterm） #

If you need batch or automated retrieval, use tools like jmxterm:

1. 下载jmxterm并启动：java -jar jmxterm-1.0.4-uber.jar
2. 连接到Broker的JMX端口：open <broker-host>:1099
3. 查询所有连接MBean：beans org.apache.activemq:BrokerName=*,Type=Connection,*
4. 遍历连接获取属性：

foreach -b org.apache.activemq:BrokerName=localhost,Type=Connection,* -- echo "Client ID: {clientId}, Persistent: {isPersistent}"

之后你可以用文本过滤工具（比如grep）提取出Persistent: true对应的Client ID。

If you need to integrate this logic into your own application, use ActiveMQ's JMX API to write a custom program:
Here's a simple Java example:

import javax.management.MBeanServerConnection;
import javax.management.ObjectName;
import javax.management.remote.JMXConnector;
import javax.management.remote.JMXConnectorFactory;
import javax.management.remote.JMXServiceURL;
import java.util.Set;

public class PersistentClientIdFetcher {
    public static void main(String[] args) throws Exception {
        // Replace with your Broker's JMX URL
        JMXServiceURL jmxUrl = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://localhost:1099/jmxrmi");
        
        // Uncomment below if your Broker requires authentication
        // Map<String, Object> env = new HashMap<>();
        // env.put(JMXConnector.CREDENTIALS, new String[]{"admin", "admin"});
        // JMXConnector connector = JMXConnectorFactory.connect(jmxUrl, env);
        
        JMXConnector connector = JMXConnectorFactory.connect(jmxUrl);
        MBeanServerConnection mBeanConn = connector.getMBeanServerConnection();

        // Query all connection MBeans
        ObjectName connectionPattern = new ObjectName("org.apache.activemq:BrokerName=localhost,Type=Connection,*");
        Set<ObjectName> connectionMBeans = mBeanConn.queryNames(connectionPattern, null);

        // Filter and print persistent client IDs
        for (ObjectName connBean : connectionMBeans) {
            Boolean isPersistent = (Boolean) mBeanConn.getAttribute(connBean, "isPersistent");
            if (Boolean.TRUE.equals(isPersistent)) {
                String clientId = (String) mBeanConn.getAttribute(connBean, "clientId");
                System.out.println("Persistent Client ID: " + clientId);
            }
        }

        connector.close();
    }
}

Note: Running this code requires dependencies like activemq-client and JMX-related libraries.

• Make sure JMX and Web Console are enabled on your Broker (they're enabled by default; if disabled, configure them in activemq.xml)
• If your Broker uses access authentication, use the correct username/password when accessing the Web Console, JMX, or API
• The "persistent clients" here refer to currently online and marked as persistent connections. If you need all clients that have ever created persistent subscriptions (including offline ones), query subscription-related MBeans like org.apache.activemq:Type=Subscription,*

内容的提问来源于stack exchange，提问作者learner