The default Run/debug configurations is not in the Tomcat option.
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No after clicking the + sign
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The reason is that there is an increase of the corresponding plug-in, the default is no Tomcat, click on the top menu "IntelliJ idea" and then select "Preferences"
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Type "Tomcat" in the search box to see the options, tick
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Restart idea when you are sure
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Re-enter Run/debug configurations after reboot to see
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You can see that the Tomcat option is already available, and you can continue with the Tomcat configuration below.
This article is from the "Zi Xuan box" blog, please be sure to keep this source http://qizixuan.blog.51cto.com/5648927/1851334
Idea version 2016.2 default edit configurations no Tomcat option workaround