Hot to get an static resource file in SpringBoot , deployed as .jar? [duplicate]

Question

I'm creating a small web app, that will generate and generate a pdf file. The app is created with SpringBoot 2.5.4.

My first intent use this line to compile the jasper report

JasperReport compileReport = JasperCompileManager.compileReport(new FileInputStream("src/main/resources/Invoice.jrxml"));

Everything works fine within the IDE (STS 4.x), but when I "build" and run with java -jar, I get a FileNotFoundException.

Then I decided to compile the .jrxml and use .jasper file. And also I want to move my files to /resources/static/reports folder, to allow the package to include that files.

But again I'm stuck, I want to retrieve static files within SpringBoot app, and when I run it, no matter how... I could load and read that file.

What I'm doing wrong?

Best Regards

slauth · Accepted Answer · 2021-09-06 12:27:29Z

1

A FileInputStream reads input bytes from a file in a file system – it won't let you access a file that is contained in a compressed JAR. Instead you could do the following:

getClass().getResourceAsStream("/Invoice.jrxml");

This should work if your file is contained in src/main/resources.

answered Sep 6, 2021 at 12:27

slauth

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Nicolas400 Over a year ago

Thanks! I think my error was that I created a folder "reports" inside static folder, and the correct place was in "resources". The with lines i got it... String reportFilename = "/reports/invoice.jasper"; InputStream is = getClass().getResourceAsStream(reportFilename); System.out.println(is.toString()); JasperReport jcReport = (JasperReport) JRLoader.loadObject(is);

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