I am currently working on a web application that uses Tomcat 4.1.27 and JDK 1.4.2_03.
The same piece of code now needs to be supported on Tomcat 3.3.1 and JDK 1.4.2_08. I managed to get the classes, jsps coompile and built by modifying the ant script. In fact even the application runs perfect and the functionalities are working as expected. Although, all is not good as it seems so. In the backend, the tomcat - startup windows isn't quite happy with the changes. I repeatedly get the following error and I can make out very little from it. I can think of possible cause as this code in my jsp but not really sure: .... <jsp:include page="weblmpagetop.jsp" flush="true"> <jsp:param name="disable-session-validation" value="true" /> <jsp:param name="body-title-text" value="<%= title %>" /> <jsp:param name="body-location-text" value="<%= location %>" /> </jsp:include> .... Exception thrown in tomcat-start up window is below: 2006-01-10 11:48:04 - Ctx(/WebLM) : Exception in R( /WebLM + /weblmlogin.jsp + n ull) - javax.servlet.ServletException: String index out of range: -1 at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageCon textImpl.java:460) at com.avaya.weblm.weblmlogin._jspService(Unknown Source) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119) at javax.servlet.http.HttpServlet.service(HttpServlet.java) at org.apache.tomcat.facade.ServletHandler.doService(ServletHandler.java :574) at org.apache.tomcat.core.Handler.invoke(Handler.java:322) at org.apache.tomcat.core.Handler.service(Handler.java:235) at org.apache.tomcat.facade.ServletHandler.service(ServletHandler.java:4 85) at org.apache.tomcat.facade.RequestDispatcherImpl.doForward(RequestDispa tcherImpl.java:272) at org.apache.tomcat.facade.RequestDispatcherImpl.forward(RequestDispatc herImpl.java:174) at com.avaya.weblm.WebLMServlet.forwardToNextPage(Unknown Source) at com.avaya.weblm.WebLMClientLogin.doPost(Unknown Source) at javax.servlet.http.HttpServlet.service(HttpServlet.java) at javax.servlet.http.HttpServlet.service(HttpServlet.java) at org.apache.tomcat.facade.ServletHandler.doService(ServletHandler.java :574) at org.apache.tomcat.core.Handler.invoke(Handler.java:322) at org.apache.tomcat.core.Handler.service(Handler.java:235) at org.apache.tomcat.facade.ServletHandler.service(ServletHandler.java:4 85) at org.apache.tomcat.facade.RequestDispatcherImpl.doForward(RequestDispa tcherImpl.java:272) at org.apache.tomcat.facade.RequestDispatcherImpl.forward(RequestDispatc herImpl.java:174) at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.jav a:423) at com.avaya.weblm.weblmlogin._jspService(Unknown Source) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119) at javax.servlet.http.HttpServlet.service(HttpServlet.java) at org.apache.tomcat.facade.ServletHandler.doService(ServletHandler.java :574) at org.apache.tomcat.core.Handler.invoke(Handler.java:322) at org.apache.tomcat.core.Handler.service(Handler.java:235) at org.apache.tomcat.facade.ServletHandler.service(ServletHandler.java:4 85) at org.apache.tomcat.facade.RequestDispatcherImpl.doForward(RequestDispa tcherImpl.java:272) at org.apache.tomcat.facade.RequestDispatcherImpl.forward(RequestDispatc herImpl.java:174) at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.jav a:423) at com.avaya.weblm.index._jspService(Unknown Source) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119) at javax.servlet.http.HttpServlet.service(HttpServlet.java) at org.apache.tomcat.facade.ServletHandler.doService(ServletHandler.java :574) at org.apache.tomcat.core.Handler.invoke(Handler.java:322) at org.apache.tomcat.core.Handler.service(Handler.java:235) at org.apache.tomcat.facade.ServletHandler.service(ServletHandler.java:4 85) at org.apache.tomcat.core.ContextManager.internalService(ContextManager. java:917) at org.apache.tomcat.core.ContextManager.service(ContextManager.java:833 ) at org.apache.tomcat.modules.server.Http10Interceptor.processConnection( Http10Interceptor.java:176) at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java :494) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadP ool.java:516) at java.lang.Thread.run(Thread.java:534) Root cause: java.lang.StringIndexOutOfBoundsException: String index out of range: -1 at java.lang.String.substring(String.java:1444) at org.apache.jasper.runtime.PageContextImpl.getAbsolutePathRelativeToCo ntext(PageContextImpl.java:401) at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.jav a:411) at com.avaya.weblm.weblmlogin._jspService(Unknown Source) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119) at javax.servlet.http.HttpServlet.service(HttpServlet.java) at org.apache.tomcat.facade.ServletHandler.doService(ServletHandler.java :574) at org.apache.tomcat.core.Handler.invoke(Handler.java:322) at org.apache.tomcat.core.Handler.service(Handler.java:235) at org.apache.tomcat.facade.ServletHandler.service(ServletHandler.java:4 85) at org.apache.tomcat.facade.RequestDispatcherImpl.doForward(RequestDispa tcherImpl.java:272) at org.apache.tomcat.facade.RequestDispatcherImpl.forward(RequestDispatc herImpl.java:174) at com.avaya.weblm.WebLMServlet.forwardToNextPage(Unknown Source) at com.avaya.weblm.WebLMClientLogin.doPost(Unknown Source) at javax.servlet.http.HttpServlet.service(HttpServlet.java) at javax.servlet.http.HttpServlet.service(HttpServlet.java) at org.apache.tomcat.facade.ServletHandler.doService(ServletHandler.java :574) at org.apache.tomcat.core.Handler.invoke(Handler.java:322) at org.apache.tomcat.core.Handler.service(Handler.java:235) at org.apache.tomcat.facade.ServletHandler.service(ServletHandler.java:4 85) at org.apache.tomcat.facade.RequestDispatcherImpl.doForward(RequestDispa tcherImpl.java:272) at org.apache.tomcat.facade.RequestDispatcherImpl.forward(RequestDispatc herImpl.java:174) at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.jav a:423) at com.avaya.weblm.weblmlogin._jspService(Unknown Source) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119) at javax.servlet.http.HttpServlet.service(HttpServlet.java) at org.apache.tomcat.facade.ServletHandler.doService(ServletHandler.java :574) at org.apache.tomcat.core.Handler.invoke(Handler.java:322) at org.apache.tomcat.core.Handler.service(Handler.java:235) at org.apache.tomcat.facade.ServletHandler.service(ServletHandler.java:4 85) at org.apache.tomcat.facade.RequestDispatcherImpl.doForward(RequestDispa tcherImpl.java:272) at org.apache.tomcat.facade.RequestDispatcherImpl.forward(RequestDispatc herImpl.java:174) at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.jav a:423) at com.avaya.weblm.index._jspService(Unknown Source) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119) at javax.servlet.http.HttpServlet.service(HttpServlet.java) at org.apache.tomcat.facade.ServletHandler.doService(ServletHandler.java :574) at org.apache.tomcat.core.Handler.invoke(Handler.java:322) at org.apache.tomcat.core.Handler.service(Handler.java:235) at org.apache.tomcat.facade.ServletHandler.service(ServletHandler.java:4 85) at org.apache.tomcat.core.ContextManager.internalService(ContextManager. java:917) at org.apache.tomcat.core.ContextManager.service(ContextManager.java:833 ) at org.apache.tomcat.modules.server.Http10Interceptor.processConnection( Http10Interceptor.java:176) at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java :494) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadP ool.java:516) at java.lang.Thread.run(Thread.java:534) 2006-01-10 11:48:04 - ErrorHandler: Error loop for R( /WebLM + /weblmlogin.jsp + null) error javax.servlet.ServletException: String index out of range: -1 Any help/pointer/suggestion is highly appreciated. 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