html export + image impossible

[thundric]

 

Hi,

using jasperreports 4.8 with JDeveloper 11.1.1.5 and weblogic 10.3.5.0 I lost my mind over this, since I've done this sucessfully using jasperreports 3.7. with Jdeveloper 10.1.3.4 and OAS 10.1.3.4.1, but now I simply cannot make it work. I've googled for hours and nothing helped me.

 

web.xml

 

   

            ImageServlet

            net.sf.jasperreports.j2ee.servlets.ImageServlet

   

   

            ImageServlet

            /image

   

 

servlet.java (based on webapp demo - HtmlServlet, same goes for XhtmlServlet does not work)

 

            PrintWriter out = response.getWriter();

            

            File sourceFile = new File("/test.jasper");

            jReport = (JasperReport)JRLoader.loadObject(sourceFile);

 

            OracleConnection conn = getDBConnection("STRKZR");

 

            HashMap paramNameValues = new HashMap();

            jPrint = JasperFillManager.fillReport(jReport, paramNameValues, conn);

            

            JRHtmlExporter exporter = new JRHtmlExporter();

            request.getSession().setAttribute(ImageServlet.DEFAULT_JASPER_PRINT_SESSION_ATTRIBUTE, jPrint);

            

            exporter.setParameter(JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN, Boolean.FALSE); //regardless if this is true or false images do not show up

            exporter.setParameter(JRExporterParameter.JASPER_PRINT, jPrint);

            exporter.setParameter(JRExporterParameter.OUTPUT_WRITER, out);

            exporter.setParameter(JRHtmlExporterParameter.IMAGES_URI, "http://127.0.0.1:7101/Portal-ViewController-context-root/faces/image?image="); // hardcoded url to ImageServlet

            

            exporter.exportReport();

 

 

When I look at the html source I can clearly see the src for image and it's correct:

 

img src="http://127.0.0.1:7101/Portal-ViewController-context-root/faces/image?image=img_0_0_1" style="height: 49px" alt=""

 

I can copy paste the image src into new browser tab and it is displayed correctly. 

 

What could be the solution for this? Please help I'm out of ideas.

 

 

 

 

Solved:

 

 

            request.getSession().setAttribute(net.sf.jasperreports.j2ee.servlets.ImageServlet.DEFAULT_JASPER_PRINT_SESSION_ATTRIBUTE, jPrint);

            exporter.setParameter(JRExporterParameter.JASPER_PRINT,jPrint);

            exporter.setParameter(JRExporterParameter.OUTPUT_WRITER, response.getWriter());

            exporter.setParameter(JRHtmlExporterParameter.IMAGES_URI, "../image?image="); //this is the line that was worng

            exporter.exportReport();

 

 

 

[sanbez]

Is realy exporter.setParameter(JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN, Boolean.FALSE) required options to show images in html? It's very strange.

P.S. I am use this options in all applications. But I'm very surprised

[thundric]

I've tried with and without exporter.setParameter(JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN, Boolean.FALSE) and I can confirm that images are displayed correctly in both cases. This is not critical.

 

My problem was only the line: exporter.setParameter(JRHtmlExporterParameter.IMAGES_URI,"../image?image=");

 

 

Just in case if someone wonders how to stop getting images from cache this can be used:

 

exporter.setParameter(JRHtmlExporterParameter.IMAGES_URI,"../image?"+ "time=" + System.currentTimeMillis() + "&image=");

 

 

Hope it helps.

[sanbez]

Thanks for explanation. Im am knows about correct value parameter JRHtmlExporterParameter.IMAGES_URI = "image?image".

But you found the solution before I see your question.

 

With best regards. Alexander