Get the server port number from tomcat without a request

Question

Is there any Tomcat API or configuration available which can tell an application (probably on startup), what port its running on without a request?

Imagine a scenari

Answer 1

public String getPort() {
    MBeanServer beanServer = ManagementFactory.getPlatformMBeanServer();
    Set objectNames;
    try {
        objectNames = beanServer.queryNames(new ObjectName("*:type=ProtocolHandler,*"),
                Query.match(Query.attr("name"), Query.value("\"http-*")));
    } catch (MalformedObjectNameException e) {
        LOGGER.error("Port not defined!", e);
    }

    return objectNames.iterator().next().getKeyProperty("port");
}

public String getSecurePort() {
    MBeanServer beanServer = ManagementFactory.getPlatformMBeanServer();
    Set objectNames;
    try {
        objectNames = beanServer.queryNames(new ObjectName("*:type=ProtocolHandler,*"),
                Query.match(Query.attr("name"), Query.value("\"https-*")));
    } catch (MalformedObjectNameException e) {
        LOGGER.error("SecuredPort not defined!", e);
    }

    return objectNames.iterator().next().getKeyProperty("port");
}