I try to integrate jasper report into my current web application. The current web application config is as below:

JBoss 4.0.3, EJB 1.1, struts 1.1

As I can't upgrade the current web app's library, I can't integrate jasper report lib into the current library (commons-digester and common-beanutils can't support jasper report lib). Therefore, I need to add another web app for it. I used the the same structure of current web app and upgrade some libraries (commons-digester and common-beanutils). I tested in the following situation:

Case 1. deploy new web app only

Result => can generate report

Case 2. deploy both new and current web app

Result => After triggering report generation, it show the exception as below

java.lang.NoSuchFieldError: PRINTSCALING

at net.sf.jasperreports.engine.export.JRPdfExporter.exportReportToStream(JRPdfExporter.java:466)

at net.sf.jasperreports.engine.export.JRPdfExporter.exportReport(JRPdfExporter.java:362)

at net.sf.jasperreports.engine.JasperExportManager.exportReportToPdfStream(JasperExportManager.java:163)

at com.qcom.qsm.ReportGeneratorBean.generate(ReportGeneratorBean.java:27)

at com.qcom.qsm.TestAction.perform(TestAction.java:56)

at org.apache.struts.action.Action.execute(Action.java:420)

Case 3. I try to use JBoss's isolated method adding jboss-app.xml into the ear file to isolate 2 web app.

It show the exception when deploying the new web app

org.jboss.deployment.DeploymentException: Error during deploy; - nested throwable: (javax.naming.NameNotFoundException: comp not bound)

at org.jboss.web.AbstractWebDeployer.start(AbstractWebDeployer.java:366)

at org.jboss.web.WebModule.startModule(WebModule.java:68)

at org.jboss.web.WebModule.startService(WebModule.java:46)

at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:274)

at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:230)

at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:141)

at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)

at org.jboss.mx.server.Invocation.invoke(Invocation.java:72)

at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:245)

at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)

at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:943)

at $Proxy0.start(Unknown Source)

Do brothers having any idea about the isolation problem and the jasper report generation exception?