1. The error message is shown in the figure below:
2. Solution: find .idea in the project and delete misc.xml file.
PS: why generated misc.xml file:
(1) Possible causes (take me as an example): I shut down my computer when running a web project, resulting in abnormal idea editor. All Tomcat related configurations in idea are missing.
Solution: reinstall idea
Reinstall idea details: when uninstalling tips: do not delete those history records and configurations
I. Tomcat startup error: internal error (Java. Lang. IllegalStateException): duplicate key (internal error (Java. Lang. IllegalStateException): duplicate key):
— find the .idea delete misc.xml file
II. Tomcat related configurations in idea are missing:
– reinstall idea (when uninstalling tips: do not delete those history records and configurations)
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