HTTP Status 500 -

Hi, I am new to jsp... Installed Tomcat 5.5... Built in examples works good... I m trying to run simple jsp program which i wrote. i can see these errors...

HTTP Status 500 -

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: Unable to compile class for JSP org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:97) org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:346) org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:414) org.apache.jasper.compiler.Compiler.compile(Compiler.java:472) org.apache.jasper.compiler.Compiler.compile(Compiler.java:451) org.apache.jasper.compiler.Compiler.compile(Compiler.java:439) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236) javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

root cause

Unable to find a javac compiler; com.sun.tools.javac.Main is not on the classpath. Perhaps JAVA_HOME does not point to the JDK org.apache.tools.ant.taskdefs.compilers.CompilerAdapterFactory.getCompiler(CompilerAdapterFactory.java:106) org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:935) org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:764) org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:382) org.apache.jasper.compiler.Compiler.compile(Compiler.java:472) org.apache.jasper.compiler.Compiler.compile(Compiler.java:451) org.apache.jasper.compiler.Compiler.compile(Compiler.java:439) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236) javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.

Apache Tomcat/5.0.28

View Answers

March 9, 2011 at 2:43 PM

Have you set the classpath? Anyways, if not then do the following:

1)Go to the Control Panel>>System>>Environment Variable And the set the variable CATALINA_HOME and put the path of your apache tomcat as a value like: C:\apache-tomcat-5.5.

2)Like that create another variable classpath and put the path of apache-tomcat lib as a value like C:\apache-tomcat-5.5\lib.*;

3)Also put the servlet api.jar file inside the lib folder.

4)Now create a jsp file:'hello.jsp'

<%@page language="java"%>
<%String st="Hello World";
%>
Message is <%=st%>

5)Put this jsp file inside the apache-tomcat>>webapps>>web application folder>>

6)You have to give appropriate name to web application folder like examples and put jsp file into it.

7)Then start the tomcat server by clicking startup.bat from the bin folder of your tomcat.

8)Open your browser and type the following url:

http://localhost:8080/examples/hello.jsp and press enter.

9)You jsp program will then display the output on the browser.

For more information, visit the following link:

JSP Tutorials

Thanks