JSPs are loaded from a separate classloader. The workaround for this is to put your code into a Java class and call that from the JSP. We need to properly fix this though; wherever we have duplicated JARs we will see such problems.
On Wed, Jun 8, 2011 at 3:41 PM, Amani Soysa <[email protected]> wrote: > Hi, > > Following exception occurs when trying to call DataHandler objects in jsp > > [2011-06-08 15:32:16,777] ERROR > {org.apache.catalina.core.ContainerBase.[Tomcat].[defaulthost].[/].[bridgeservlet]} > - Servlet.service() for servlet [bridgeservlet] in context with path [/] > threw exception [Exception in JSP: /log-view/downloadgz-ajaxprocessor.jsp:71 > > 68: serviceName = (serviceName == null) ? "WSO2 Stratos Manager" : > serviceName; > 69: > *70: DataHandler logs = > logViewerClient.downloadLogsFromZip(downloadFile,tenantDomain,serviceName); > 71: InputStream fileToDownload = logs.getInputStream();* > 72: int c; > 73: while((c=fileToDownload.read()) != -1){ > 74: zipOutputStream.write(c); > > > Stacktrace:] with root cause > java.lang.LinkageError: loader constraint violation: loader (instance of > org/apache/jasper/servlet/JasperLoader) previously initiated loading for a > different type with name "javax/activation/DataHandler" > at > org.apache.jsp.log_002dview.downloadgz_002dajaxprocessor_jsp._jspService(downloadgz_002dajaxprocessor_jsp.java:137) > at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) > at > org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332) > at > org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314) > at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) > at org.wso2.carbon.ui.JspServlet.service(JspServlet.java:119) > at org.wso2.carbon.ui.TilesJspServlet.service(TilesJspServlet.java:80) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) > at > org.eclipse.equinox.http.helper.ContextPathServletAdaptor.service(ContextPathServletAdaptor.java:36) > at > org.eclipse.equinox.http.servlet.internal.ServletRegistration.handleRequest(ServletRegistration.java:90) > at > org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:111) > at > org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:67) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) > at org.wso2.carbon.bridge.BridgeServlet.service(BridgeServlet.java:155) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240) > at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164) > at > org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462) > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164) > at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) > at org.wso2.carbon.server.TomcatServer$1.invoke(TomcatServer.java:241) > at > org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563) > at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) > at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:399) > at > org.apache.coyote.http11.Http11NioProcessor.process(Http11NioProcessor.java:396) > at > org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:356) > at > org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1534) > at > java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) > at java.lang.Thread.run(Thread.java:662) > > > Note :- axiom-1.2.11.wso2v1.jar bundle is coppied in both /lib/api/ and > repository/components/plugins/ locations > > > Regards > Amani > > > _______________________________________________ > Carbon-dev mailing list > [email protected] > http://mail.wso2.org/cgi-bin/mailman/listinfo/carbon-dev > > -- *Afkham Azeez* Director of Architecture; WSO2, Inc.; http://wso2.com Member; Apache Software Foundation; http://www.apache.org/ * <http://www.apache.org/>** email: **[email protected]* <[email protected]>* cell: +94 77 3320919 blog: **http://blog.afkham.org* <http://blog.afkham.org>* twitter: **http://twitter.com/afkham_azeez*<http://twitter.com/afkham_azeez> * linked-in: **http://lk.linkedin.com/in/afkhamazeez* * * *Lean . Enterprise . Middleware*
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