问题
I have a project going on for a couple of months now using a Spring MVC framework. For developing I am using an Apache Tomcat 8.0.17 with an exploded war file. Everything worked well since yesterday. Now when I change my Java Files the changes are no longer visible. I can even throw runtime exceptions and stuff like that (I always restart the tomcat server). The only way to "update" my code is to rebuild the whole project (Build --> Rebuild Project) which is quite time consuming and very annoying.
I did not change anything in the configuration nor updated Intellij IDEA or the Tomcat Server.
回答1:
I could fix this by manually deleting all the files in the following folder:
%userdir%/.IntelliJIdea14/system/tomcat
After a full rebuild the updateing process works perfectly again.
回答2:
Use this is VM Options:
-Dcatalina.home=%tomcat_folder% -Dwtp.deploy=%tomcat_folder%/webapps -Dcatalina.base=%tomcat_folder%
来源：https://stackoverflow.com/questions/28520601/intellij-and-apache-tomcat-not-updating