net.spy.jwebkit.debug
Class DebugServlet

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          net.spy.jwebkit.JWHttpServlet
              net.spy.jwebkit.debug.DebugServlet

All Implemented Interfaces:

java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class DebugServlet
extends JWHttpServlet

Servlet for getting a view of the JVM.

The following optional request parameters may be provided:

• refresh number of seconds to wait between automatic refresh.
• show_thread_classes show thread classes.

The following servlet init parameters may be provided:

• enable - comma separated list of sections to enable
• disable - comma separated list of sections to disable

The following sections are available by default:

• properties - system properties
• context - context info
• objectPool - object pool dump
• engineSpecific - servlet engine specific information
• runtime - runtime info (memory, etc...)
• threads - thread dump
• mySession - dump of the requestor's session
• allSessions - dump of all sessions
• requestAttrs - dump of the requestor's request attributes

See Also:

Serialized Form

Constructor Summary

DebugServlet()

Method Summary

protected void	doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Process the request.
void	init(javax.servlet.ServletConfig conf) Initialize the debug servlet.
protected boolean	shouldShow(java.lang.String what) True if the named section should be shown.
protected void	showMore(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, java.io.PrintWriter out) Hook for subclasses of DebugServlet to provide more information.

Methods inherited from class net.spy.jwebkit.JWHttpServlet

getContextRelativeFilePathParameter, getLogger, sendHTML, sendPlain, sendSimple, service, service

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPost, doPut, doTrace, getLastModified

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DebugServlet

public DebugServlet()

Method Detail

init

public void init(javax.servlet.ServletConfig conf)
          throws javax.servlet.ServletException

Initialize the debug servlet.

Specified by:

init in interface javax.servlet.Servlet

Overrides:

init in class javax.servlet.GenericServlet

Throws:

javax.servlet.ServletException

shouldShow

protected boolean shouldShow(java.lang.String what)

True if the named section should be shown.

Parameters:

what - the name of the section

Returns:

true if the section should be shown

showMore

protected void showMore(javax.servlet.http.HttpServletRequest request,
                        javax.servlet.http.HttpServletResponse response,
                        java.io.PrintWriter out)
                 throws javax.servlet.ServletException,
                        java.io.IOException

Hook for subclasses of DebugServlet to provide more information.

Parameters:

request - the servlet request

response - the servlet response

out - the output stream

Throws:

javax.servlet.ServletException

java.io.IOException

doGet

protected void doGet(javax.servlet.http.HttpServletRequest request,
                     javax.servlet.http.HttpServletResponse response)
              throws javax.servlet.ServletException,
                     java.io.IOException

Process the request.

Overrides:

doGet in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

java.io.IOException