procedure

Rename the Tomcat ROOT directory
File export in Eclipse
Place the war file

Rename tomcat ROOT directory

Rename the ROOT directory under / var / lib / tomcat8 / webapp / to ROOT2

File export in eclipse

Right click on the project name
Click Export
Select Web → war file and Next
Destination → Reference → Save the file as "ROOT"

Place war file

Place the exported ROOT.war file under / var / lib / tomcat8 / webapp /.

About 10 seconds after placement, a new / var / lib / tomcat / webapp / ROOT directory is automatically created, and the contents of ROOT.war are expanded in it.

If you delete the ROOT.war file, the ROOT directory will also be deleted automatically.

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