Empty View using Jasper

[sjtirtha]

Hi,

I was struggling all day to find out the problem, but I found nothing.
I'm using now Acegi, Spring MVC, and Jasper.

And what I have, I want to pass the result of my searching in to the view, which invokes JasperReportsMultiFormatView.

What I get is only an empty page for all formats, pdf, excel, and html.
The JasperReportsMultiFormatView is invoked, because the application doesn't send any error, but like I said, it returns an empty pdf file, empty xls file, also empty html file.

I tried with some jrxml files, which also work in another application. So I think the problem is not in jrxml file.

Can somebody help me ?

steve

[sjtirtha]

Hi,

I think, no one has the same problem as I.
I just found the hidden error, so the view displays the pdf, xls or html without error. But the page is empty.

And like I said, I tried all possibility. I tried also using another jrxml, which works in other page. It still displayed an empty page.
I tried implement subclass from Jasper view class, didn't work.
I checked the whole library, there was no problem.

And I checked into the code, what I found. The code doesn't return any error if the page empty. And in may case I found the error in reportDataKey. This property accepts the data to be reported, but it doesn't proof whether the data ok or not.

So I just used another constructor to to build the data
//JRDataSource xmlDataSource = new JRXmlDataSource(docw3c, "/ino:response/xql:result/contract");
JRDataSource xmlDataSource = new JRXmlDataSource(docw3c);
And it works, I think the XPath that I'd given in JRXMLDataSource was wrong. But Spring doesn't return any error.

I'll check in again and let you know.

sjtirtha

[zhirenshao]

Hi sjtirtha

I had exatcly same problem as you, thanks for your investigation. It works now

[gopik]

I am using something like,

InputStream fUECReportStream = getServletConfig().getServletContext()
.getResourceAsStream("/reports/FUECReport.jasper");
JRXmlDataSource xmlDataSource = new JRXmlDataSource(stringToDom(xmlResult));
where xmlResult is an XML string which gets converted to DOM from stringToDom function.

JasperRunManager.runReportToPdfStream(fUECReportSt ream,
servletOutputStream, parameterMap, xmlDataSource);

response.setContentType("application/pdf");
servletOutputStream.flush();
servletOutputStream.close();


public static Document stringToDom(String xmlSource) throws SAXException, ParserConfigurationException, IOException {
Document document = null;
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
document=builder.parse(new InputSource(new StringReader(xmlSource)));
}
The PDF gets opened, but I don't see any data?

Is there any mistake somewhere?