How to change the ROOT application

Question

I m trying to change the default application of a Tomcat 6 webserver to a different application than  ROOT   inside webapps folder   What is the best way to do this

User · Answer

You can do this in a slightly hack-y way by    Stop Tomcat Move ROOT war aside and rm -rf webapps ROOT Copy the webapp you want to webapps ROOT war Start Tomcat

User · Answer

Ultimate way to change tomcat root application  Tested on Tomcat 7 and 8    Move to the tomcat webapps directory   Example on my machine    stack apache-tomcat webapps Rename  replace or delete ROOT folder  My advice is renaming or create a copy for backup  Example rename ROOT to RENAMED ROOT    mv ROOT RENAMED ROOT Move war file with your application to tomcat webapps directory  its a directory where was old ROOT folder  on my machine    stack apache-tomcat webapps       War file must have a name ROOT war  Rename your aplication if it s   need  yourApplicationName war -  ROOT war    Restart tomcat  After restart your application will be a root

User · Answer

Adding a  lt Context gt  tag in the  lt Host gt  tag in server xml for Tomcat 6 will resolve the problem    If you use path    empty you can use a URL like http   localhost first do    In the context tag set attributes docBase  E  struts-ITRCbook myStrutsbook  and reloadable  true   then end the context tag   It should look something like this    lt Host name  localhost   appBase  webapps           unpackWARs  true  autoDeploy  true          xmlValidation  false  xmlNamespaceAware  false  gt       lt Context path    docBase  E  struts-ITRCbook myStrutsbook  reloadable  true  gt       lt  Context gt   lt  Host gt

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ROOT default app is usually Tomcat Manager - which can be useful so I felt like keeping it around   So the way i made my app ROOT and kept TCmgr was like this   renamed ROOT to something else  mv ROOT TCmgr   then created a symbolic link  whereby ROOT points to the app i want to make the default   ln -s  lt your app gt  ROOT   worked for me and seemed the easiest approach

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Not a very good solution but one way is to redirect from the ROOT app to YourWebApp  For this you need to modify the ROOT index html    lt html gt       lt head gt           lt title gt Redirecting to  YourWebApp lt  title gt       lt  head gt       lt body onLoad  javascript window location  YourWebApp    gt       lt  body gt   lt  html gt    OR   lt html gt       lt head gt           lt title gt Redirecting to  YourWebApp lt  title gt           lt meta http-equiv  refresh  content  0 url YourWebApp    gt       lt  head gt       lt body gt       lt  body gt   lt  html gt    Reference   http   staraphd blogspot com 2009 10 change-default-root-folder-in-tomcat html

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I ll look at my docs  there s a way of specifying a  configuration to change the path of the root web application away from ROOT  or ROOT war   but it seems to have changed between Tomcat 5 and 6   Found this   http   www nabble com Re -Tomcat-6-and-ROOT-application   -td20017401 html  So  it seems that changing the root path  in ROOT xml  is possible  but a bit broken -- you need to move your WAR outside of the auto-deployment directory   Mind if I ask why just renaming your file to ROOT war isn t a workable solution

User · Answer

In Tomcat 7  under Windows server  I didn t add or edit anything to any configuration file  I just renamed the ROOT folder to something else and renamed my application folder to ROOT and it worked fine

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In Tomcat 7 with these changes  i m able to access myAPP at   and ROOT at  ROOT   lt Context path    docBase  myAPP   gt   lt Context path  ROOT  docBase  ROOT   gt    Add above to the  lt Host gt  section in server xml

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the context xml configuration didn t work for me  Tomcat 6 0 29 complains about the docBase being inside the appBase       For Tomcat 5 this did actually work   So one solution is to put the application in the ROOT folder    Another very simple solution is to put an index jsp to ROOT that redirects to my application like this   response sendRedirect   MyApplicationXy      Best Regards  Jan

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There are three methods    First shutdown your Tomcat from the its bin directory  sh shutdown sh   Then delete all the content of your Tomcat webapps folder  rm -fr     Then rename your WAR file to ROOT war  and finally start your Tomcat from the bin directory  sh startup sh   Leave your war file in  CATALINA BASE webapps under its original name  Turn off  autoDeploy and deployOnStartup in your Host element in the server xml file  Explicitly define all application Contexts in server xml  specifying both the path  and docBase attributes  You must do this because you have disabled all the Tomcat  auto-deploy mechanisms  and Tomcat will not deploy your applications anymore unless it finds their Context in the server xml      second method  in order to make any change to any   application  you will have to stop and restart Tomcat   Place your WAR file outside of  CATALINA BASE webapps  it must be outside  to prevent double deployment   Place a context file named ROOT xml in  CATALINA BASE conf   The single element in this context file MUST have a  docBase attribute pointing to the location of your WAR file  The path element  should not be set - it is derived from the name of the  xml file  in this  case ROOT xml  See the documentation for the Context container for details    Reference

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An alternative solution would be to create a servlet that sends a redirect to the desired default webapp and map that servlet to all urls in the ROOT webapp   package com example servlet   import java io    import javax servlet    import javax servlet http     public class RedirectServlet extends HttpServlet       Override   public void doGet HttpServletRequest request  HttpServletResponse response  throws ServletException  IOException       response sendRedirect   myRootWebapp            Add the above class to  CATALINA BASE webapps ROOT WEB-INF classes com example servlet  And add the following to CATALINA BASE webapps ROOT WEB-INF web xml      lt servlet gt       lt display-name gt Redirect lt  display-name gt       lt servlet-name gt Redirect lt  servlet-name gt       lt servlet-class gt com example servlet RedirectServlet lt  servlet-class gt     lt  servlet gt     lt servlet-mapping gt       lt servlet-name gt Redirect lt  servlet-name gt       lt url-pattern gt   lt  url-pattern gt     lt  servlet-mapping gt    And if desired you could easily modify the RedirectServlet to accept an init param to allow you to set the default webapp without having to modify the source   I m not sure if doing this would have any negative implications  but I did test this and it does seem to work

User · Answer

According to the Apache Tomcat docs  you can change the application by creating a ROOT xml file   See this for more info    http   tomcat apache org tomcat-6 0-doc config context html   The default web application may be defined by using a file called ROOT xml

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I ve got a problem when configured Tomcat  server xml and added Context element  He just doesn t want to use my config  http   www oreillynet com onjava blog 2006 12 configuration antipatterns tom html  If you re in a Unix-like system    mv  CATALINA HOME webapps ROOT  CATALINA HOME webapps    ROOT ln -s  CATALINA HOME webapps your project  CATALINA HOME webapps ROOT   Done   Works for me

[tomcat] How to change the ROOT application?

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