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Editorial Team
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Asked: 2026-05-25T12:33:46+00:00

I’m trying to deploy a Tomcat application by copying it to the webapps directory.

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I’m trying to deploy a Tomcat application by copying it to the webapps directory. My webapps directory looks like:

webapps/test
           |_ index.jsp
           |_ WEB-INF
                    |_ lib
                         |_ test.jar

The contents of index.jsp are:

<html>
    Test App<br>
    <%= com.stevekuo.Test.test() %>
</htm>

test.jar has the Test class with the static test() method that just returns a string.

When I access my app via http://tomcatserver:8080/test/, all I get is:

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: 

An error occurred at line: 3 in the jsp file: /index.jsp
com.stevekuo.Test cannot be resolved to a type
1: <html>
2:     Test<br>
3:     <%= com.stevekuo.Test.test() %>
4: </html>

I’ve also tried packaging the above directory structure into a WAR file and copying to webapps, but it still gives the same error.

I’m running standard out-of-the-box Tomcat 6 on Ubuntu 10.04. Tomcat came installed by Ubuntu. All files have -rw-r--r-- permissions, and directories are drwxr-xr-x. Why can’t Tomcat resolve the Test class located in WEB-INF/lib/test.jar?

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1 Answer

  1. Editorial Team

    Resolved. I added an empty web.xml and it works.

    <?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app 
    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" 
    "http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>
</web-app>
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