Date Created: Sat 09-Jul-2011

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How to add shared libraries to Tomcat within Eclipse

Open Tomcat server definition



Click Open launch configuration in the General Information section as shown below



Clink on User Entries and then Add External JARs



Browse and locate the shared lib (JAR)

What I would I would recommend is that you create a separate Java project with Ant/Maven to automatically create the JAR file as required and place it into a shred JARS location, for referencing form Tomcat as required for testing development.

Below is an example for a class not found when a shared library was not available.

type Exception report

message

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

exception

javax.servlet.ServletException: Servlet execution threw an exception

root cause

java.lang.NoClassDefFoundError: com/screv/shared/utilities/ServletHelpers
com.screv.GetSession.doGet(GetSession.java:61)
javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

root cause

java.lang.ClassNotFoundException: com.screv.shared.utilities.ServletHelpers
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1676)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1521)
com.screv.GetSession.doGet(GetSession.java:61)
javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

note The full stack trace of the root cause is available in the Apache Tomcat/7.0.11 logs.

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Steve Robinson has been working in IT for over 20 years and has provided solutions for many leading brands around the world. Steve specialises in JEE, DevOps and Thought Leadership.

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