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Today I found JSP throw NullPointException error in the following line
_el_expressionfactory = _jspxFactory.getJspApplicationContext(getServletConfig().getServletContext()).getExpressionFactory()
I found delete
jsp-api-2.1.jar
can fix the issue, but don’t know why. Anyone knows the reason for this error.
I am using Tomcat 6.0.33
Web apps must not provide their own Java EE libraries; they will conflict with the server’s versions. It can create a variety of errors like this.