Intellij Idea:java.lang.ClassNotFoundException:javax.el.ELResolver Exception Solution

Use the IntelliJ idea in the process of compiling problems and solutions.

Because the compile time reported Javax.servlet does not exist, I put Tomcat under the Servlet-api.jar external libraries directory, so as to solve the problem of javax.servlet not exist. At run time again met

Servlet-api.jar should be added to the lib of the JDK used, and the JRE of this JDK should also be added to Servlet-api.jar.

Intellij Idea:java.lang.ClassNotFoundException:javax.el.ELResolver Exception Solution