phenomenon
When you configure struts.xml in the IDEA extends = "struts-default" newspaper red, no property option when prompted to pre-configure the interceptor, also is booming.
Struts.xml configuration itself is not wrong.
Solution
Ctrl+Shift+Alt+S调出Project Structure
the reason
When you create a project, we chose after importing struts jar package, IDEA can not find the file struts-default.xml jar package.
We import the struts jar package, IDEA does not scan which there are no struts-default.xml file for IDEA is struts-default.xml is missing, report it red, there is no corresponding code hints.
