为什么利用spring注解模式注册mbean，在jconsole里面看不到bean的属性和操作

Question

@ManagedResource(objectName="com.xormedia.aqua.mbean:name=AuthenticationServerMBean",description="AuthenticationServerSummary")
public class AuthenticationServerSummary implements MonitorMXBean {
    private String ip;
    private String port;

    @ManagedAttribute
    public String getIp() {
        return ip;
    }
    public void setIp(String ip) {
        this.ip = ip;
    }

    @ManagedOperation(description="show port number")
    public String getPort() {
        return port;
    }
    public void setPort(String port) {
        this.port = port;
    }
}