How to purge tomcat s cache when deploying a new war file Is there a config setting

Question

I have a simple hello  world servlet application that I am just playing around with  and pushing it out to my tomcat server on a VPS   When I make a change to my code  and deploy it  tomcat doesn t serve the newly published code  even after starting the service again    I stop the service  then push the new war file to  webapps   and I make sure to delete the old exploded folder also   When I re-start the server  it still serves the older codebase   Is there a setting in the config to stop this behaviour   Also  what folders would I have to delete   Please be specific  folders and paths  as I have tried deleting some and havent  gotten anywhere

User · Answer

Sounds like your class loader is not loading the servlet classes once they are updated. This might be fixed if you change your web.xml file which should prompt the server/container to re-deploy and reload the servlet classes. I guess add an empty line at the end of your web.xml and save it and then see if that fixes it. As i said this might fix it or might not.

Good luck!

User · Answer

Tomcat also creates a ROOT directory at the same level as work   ROOT  also caches the old stuff  delete ROOT along with Catalina directory in work

User · Answer

Seems a timestamp issue  According to tomcat documentation  if there is a new jsp or servlet this will create a new  java file in the work folder unless the  java class files are newer than the jsp or servlets

User · Answer

I m new to tomcat  and this problem was driving me nuts today  It was sporadic  I asked a colleague to help  and the WAR expanded and it did was it was supposed to  3 deploys later that day  it reverted back to the original version   In my case  the MySite WAR got expanded to both ROOT AND MySite   MySite was usually served up  But sometimes tomcat decided it liked the ROOT one better and all my changes disappeared   The  solution  is to delete the ROOT website with every deploy of the war

User · Answer

I have a bad time putting my war file at  etc tomcat7 webapps but the real path was  var lib tomcat7 webapps  May you want to use sudo find   -type f -name  my-war-file war  to know where is it   And remove this folders  tmp hsperfdata   and  tmp tomcat7-tomcat7-tmp

User · Answer

You can delete the  work  directory   Are you sure it s not a browser caching issue

User · Answer

I had the same issue twice  but in the second time I realized it wasn t a problem on Tomcat at all   Try to delete the cache of your browser  refresh the page and see if the new version of the page on your server is being shown up  It worked with me

User · Answer

A little late for the party  here s how I do it   Undeploy application from manager Shutdown tomcat using   shutdown sh Delete browser cache Delete the application from webapps  and from  work Catalina     Startup tomcat using   startup sh Copy the new version of the application into  webapps and start it

User · Answer

I d add that in case of really odd behavior - where you spend a couple of hours saying WTF - try manually deleting the  webapps yourwebapp WEB-INF classes directory  A java source file that was moved to another package will not have its compiled class file deleted - at least in the case of an exploded web-application on TC  This can seriously drive you crazy with unpredictable behavior  especially with an annotated servlet

User · Answer

I encountered some weird behaviour that did not reflect the actual code base so after some time trying several solutions  my problem was solved by manually deleting everything under  var cache tomcat8

[java] How to purge tomcat's cache when deploying a new .war file? Is there a config setting?

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