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problem in showing report after releasing


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When I released my project in tomcat in the operation system of Windows, the jasperreport is totally correct. But after I released it to the Weblogic in the operation system of Unix, the problem happened. When the fillReport method of JasperFillManager is used, the error occured. The error information was:

java.lang.reflect.InvocationTargetException

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

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

at java.lang.reflect.Method.invoke(Method.java:324)

at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:280)

at com.linkage.struts.BaseAction.execute(BaseAction.java:92)

at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)

at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)

at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)

at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)

at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1006)

at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)

at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:28)

at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)

at org.extremecomponents.table.filter.AbstractExportFilter.doFilter(AbstractExportFilter.java:49)

at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)

at com.linkage.pub.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:99)

at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)

at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6724)

at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)

at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)

at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3764)

at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2644)

at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:219)

at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:178)

Caused by: java.lang.InternalError: Can't connect to X11 window server using ':0.0' as the value of the DISPLAY variable.

at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)

at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:139)

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Class.java:141)

at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:62)

at net.sf.jasperreports.engine.util.JRGraphEnvInitializer.initializeGraphEnv(JRGraphEnvInitializer.java:58)

at net.sf.jasperreports.engine.fill.JRBaseFiller.<init>(JRBaseFiller.java:311)

at net.sf.jasperreports.engine.fill.JRVerticalFiller.<init>(JRVerticalFiller.java:92)

at net.sf.jasperreports.engine.fill.JRVerticalFiller.<init>(JRVerticalFiller.java:74)

at net.sf.jasperreports.engine.fill.JRFiller.createFiller(JRFiller.java:147)

at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:83)

at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:601)

at com.linkage.mobile.report.logic.JasperReportUtil.fillData(JasperReportUtil.java:78)

at com.linkage.mobile.report.action.TradeReportAction.fillDate(TradeReportAction.java:119)

at com.linkage.mobile.report.action.TradeReportAction.queryTradeReport(TradeReportAction.java:35)

I searched this error on the internet. there were some people said, if I added "-Djava.awt.headless=true

" command in the config file startWLS.sh, the problem can be solved. But the unix server didn't support the headless. How can I do for this problem? Is there any one can tell me? Thank you very much!

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  • 2 weeks later...

I also had that problem with unix/linux and tomcat. the JR-libraries use some kind of awt-libraries and these need under unix an x11-server running.

 

One solution is to change your tomcat or Weblogic configuration.

 

For tomcat: open the catalina.sh properties file and insert the line:

Code:

CATALINA_OPTS="-Djava.awt.headless=true"

with this line, the tomcat can use java and awt libraries without an existing x11 server.

 

hope, this will help a bit

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Thank you for your answer, the problem is not solved but I seem to be a step further in its resolution.

I positionned the headless environment variable.

I put the PJA libs in the project, and now the X11 server error doens't display any more.

But another problem appeared :

java.lang.Error: Could not find class: com.eteks.java2d.PJAGraphicsEnvironment

 

which are the classes I have configured to deal with.

 

The libs are in the /WEB-INF/lib directory.

 

What could I do to solve this ?

 

Regards

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Problems solved

 

There are the things to do :

 

1. Use PJA toolkit (pja.jar and pjatools.jar)

Put the jars in the project

2. Define environment variables :

// Specify a default folder for storing compiled XML templates

 

JRProperties.setProperty("jasper.reports.compile.class.path",

context.getRealPath("/WEB-INF/lib/jasperreports-1.2.7.jar")

+ System.getProperty("path.separator")

+ context.getRealPath("/WEB-INF/classes/"));

 

// Specify a default folder for storing compiled XML templates

JRProperties.setProperty("jasper.reports.compile.temp",context.getRealPath("/reports/"));

 

// Specify the system properties for the graphical libraries

System.setProperty("java.awt.headless", "true");

System.setProperty("java.awt.graphicsenv", "com.eteks.java2d.PJAGraphicsEnvironment");

System.setProperty("java.awt.fonts", "/usr/openwin/lib/locale/euro_fonts/X11/fonts/TrueType");

System.setProperty("awt.toolkit", "com.eteks.awt.PJAToolkit");

System.setProperty("user.home", context.getRealPath("/WEB-INF/lib/pja.jar"));

System.setProperty("java2d.font.usePlatformFont", "false");

Define boot classpath to the pja toolkit :

For WebSphere 6, in the process definition section, point to the absolute path to the pja jars.

e.g.: /od/ISG/installedapps/app.ear/app.war/web-inf/lib/pja.jar:/od/ISG/installedapps/app.ear/app.war/web-inf/lib/pjatools.jar

 

Thank you very much to everyone that helped me (even in other forums), and especially to wegnerk

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