JSP file not running

Question

i have created one jsp file but it doesn't running in any way..!!

it gives NoClassDefFoundError and ServletException.

here is the complete error message.

    javax.servlet.ServletException: java.lang.NoClassDefFoundError: Could not initialize class org.apache.jasper.compiler.JspUtil
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:272)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

I am using Eclipse Helios SR1 and Apache Tomcat 6.0, with JDK 1.6.0.

Looks like a messed-up install or deploy. You're not deploying a servlet or jsp jar in your own app, are you? — Dave Newton, Feb 05 '12 at 14:51
@DaveNewton...i have saved servlet-api.jar and jsp-api.jar in WebContent\WEB-INF\lib folder..is it sufficient?? — sohel khalifa, Feb 05 '12 at 14:56
You must *not* deploy your own servlet and jsp libraries. Remove them. — Dave Newton, Feb 05 '12 at 14:58
If required, just add in the classpath instead of copying them into WEB-INF/lib folder. — Ravindra Gullapalli, Feb 05 '12 at 18:22
@DaveNewton the web container should ignore them if they were deployed with the application. — Thorbjørn Ravn Andersen, Oct 12 '12 at 10:06
Maybe it *should*, but they certainly don't all share that opinion. — Dave Newton, Oct 12 '12 at 13:01

score 5 · Accepted Answer · edited May 23 '17 at 12:09

i have saved servlet-api.jar and jsp-api.jar in WebContent\WEB-INF\lib folder..is it sufficient??

No. Remove them. If necessary, reconfigure your Eclipse project to set Tomcat as Targeted Runtime.

Read this thoroughly: How do I import the javax.servlet API in my Eclipse project? Dropping arbitrary servlet container specific libraries in /WEB-INF/lib is one of most common beginner's mistakes in order to "solve" compilation problems on JSP/Servlet specific APIs which they faced in an IDE. It would make your webapp to run correctly only on the container where those libraries originated from, not on containers of different makes/versions.

JSP file not running

1 Answers1