I had some similar issues and I solved them by upgrading the JasperReports
from 2.x to 3.0.0.
novotny wrote:
>
> Hi,
>
> Ok I found in wicketstuff, a JRPdfResource class that does the jasper to
> pdf conversion for me
> and I added code to do this:
>
> InputStream is = getClass().getResourceAsStream("/test.jasper");
>
> JRResource pdfResource = new JRPdfResource(is);
>
> pdfResource.setReportParameters(new HashMap<String, Object>());
> add(new ResourceLink("print", pdfResource));
>
> But when I run it I get
>
> org.apache.wicket.util.io.SerializableChecker$WicketNotSerializableException:
> Unable to serialize class: java.io.ByteArrayInputStream
> Field hierarchy is:
> 2 [class=com.homeaccount.web.loanoptions.MortgageResultsPage, path=2]
> private java.lang.Object org.apache.wicket.MarkupContainer.children
> [class=[Ljava.lang.Object;]
> private java.lang.Object
> org.apache.wicket.MarkupContainer.children[8]
> [class=org.apache.wicket.markup.html.link.ResourceLink, path=2:print]
> private final org.apache.wicket.Resource
> org.apache.wicket.markup.html.link.ResourceLink.resource
> [class=com.homeaccount.web.jasper.JRPdfResource]
> private
> com.homeaccount.web.jasper.JRResource$JasperReportFactory
> com.homeaccount.web.jasper.JRResource.jasperReportFactory
> [class=com.homeaccount.web.jasper.JRResource$1]
> final java.io.InputStream
> com.homeaccount.web.jasper.JRResource$1.val$report
> [class=java.io.ByteArrayInputStream] <----- field that is not serializable
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:349)
> at
> org.apache.wicket.util.io.SerializableChecker.checkFields(SerializableChecker.java:618)
> at
> org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:541)
>
> I checked and JRResources implements Serializable, is there a way I can
> get Wicket to avoid serializing this?
>
> I was also thinking maybe I could do something like this:
>
> add(new Link("print") {
>
>
> public void onClick() {
> InputStream is =
> getClass().getResourceAsStream("/test.jasper");
> JRResource pdfStream = new JRPdfResource(is);
> pdfStream.setReportParameters(new HashMap<String,
> Object>());
> getRequestCycle().setRequestTarget(new
> ResourceStreamRequestTarget(pdfStream).setFileName("test.pdf"));
> }
> });
>
> But turns out JRResource extends DynamicWebResource and does not implement
> IResourceStream so not sure if this can be made to work...
>
> Thanks, Jason
>
>
> Pills wrote:
>>
>> Hi,
>>
>> look at RequestCycle#setRequestTarget and ResourceStreamRequestTarget
>>
>>
>> novotny wrote:
>>> Hi,
>>>
>>> I'm learning Jasper to create/display a PDF when a link is clicked and
>>> the
>>> template code I have looks like:
>>>
>>> ServletOutputStream servletOutputStream = response.getOutputStream();
>>> InputStream reportStream =
>>> getServletConfig().getServletContext().getResourceAsStream("/reports/FirstReport.jasper");
>>>
>>> JasperRunManager.runReportToPdfStream(reportStream,
>>> servletOutputStream, new HashMap(), new
>>> JREmptyDataSource());
>>>
>>> response.setContentType("application/pdf");
>>> servletOutputStream.flush();
>>> servletOutputStream.close();
>>>
>>> How should I acccess the servlet objects, or is there a better way to do
>>> this that is the "wicket way(tm)"?
>>>
>>> Much appreciated, Jason
>>>
>>>
>>
>>
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>>
>>
>
>
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