The superclass "javax.servlet.jsp.tagext.SimpleTagSupport" was not found on the Java Build Path

The superclass "javax.servlet.jsp.tagext.SimpleTagSupport" was not found on the Java Build Path解决:The superclass “javax.servlet.jsp.tagext.SimpleTagSupport” was not found on the Java Build Path问题
The superclass "javax.servlet.jsp.tagext.SimpleTagSupport" was not found on the Java Build Path