Malformed URL Exception During Production Mode

Flow
1

I can open a pdf when in development mode passed to an anchor as shown below

byte pdfByteArray = JasperExportManager.exportReportToPdf(jasperPrint);
setPdfStreamResource(new StreamResource(“tables.pdf”, () → new ByteArrayInputStream(pdfByteArray)));
anchorBillingOp.setHref(getPdfStreamResource());
UI.getCurrent().getPage().executeJs(“$0.click()”, anchorBillingOp);

But after compilation in production mode I get a nullPoinerException

Caused by: java.lang.NullPointerException
at java.base/java.net.URL.(URL.java:585)
… 133 more
net.sf.jasperreports.engine.JRException: java.net.MalformedURLException

What could be wrong

2

Please, post the complete stack trace

3

message.txt (14.5 KB)

4

It seems JasperReports is not able to load the JRXML definition.

5

Where do you store it and how do you load it?

6

resources.META-INF.resources.assets

7

InputStream resourceAsStream = VaadinServlet.getCurrent().getServletContext()
.getResourceAsStream(“/assets/IPCORPORATE.jrxml”);

8

Do you have some reference to subreports or other resources inside the JRXML?

9

message.txt (23.2 KB)

10

there is a parameter logo but it’s stored inside resources.META-INF.resources.img

11

Looks good. How is the application packaged? Is it a WAR deployed on a Servlet Container or a Spring Boot fat-jar?

12

My guess is that in production the JRXML resource is not found, resulting in a null inpustream

13

Its a war file. Am trying to change the jasperreports version

14

Not found, have I not placed it in the right folder in assets?

15

is the produced WAR, where is the JRXML file located? Is it in a jar inside the WEB-INF/lib or under WEB-INF/classes/?

16

WEb-INF/classes/META-INF/resources/assets

17

I would recommend to use the spring way of loading resources, this takes care of all different types of deployment and jar/war structures https://www.baeldung.com/spring-classpath-file-access

18

And if it is not a Spring application, I suppose you have to use getResourceAsStream("/META-INF/resources/assets/IPCORPORATE.jrxml")
IIRC, /META-INF/resources is resolved only for resources in JAR files (but I may be wrong)

19

My eyes saw spring in the stack trace :nerd_face::innocent:

20

My eyes see little normally and even less at this hour :man_facepalming: