Jasper report is not working after making jar file [closed]

Answer 1

Well guys, I don't know if It's too late, but I wasted 1 day searching the solutions to this problem, about JasperReport after building an Jar executable. To get your Reports working after building a jar, you just need to write the following lines

String reportUrl = "/reports/billCopyReport.jasper"; //path of your report source.
InputStream reportFile = null;
reportFile = getClass().getResourceAsStream(reportUrl);

Map data = new HashMap(); //In case your report need predefined parameters you'll need to fill this Map

JasperPrint print = JasperFillManager.fillReport(reportFile, data, conection);
JasperViewer Jviewer = new JasperViewer(print, false);
Jviewer.setVisible(true);

/* var conection is a Connection type to let JasperReport connecto to Database, in case you won't use DataBase as DataSource, you should create a EmptyDataSource var*/

Answer 2

The path src will not exist at runtime and you should never reference it.

Based on this, the Allvendor_personal_info.jrxml will be an embedded resource, stored within the Jar file, you won't be able to access it like you do normal files, instead, you need to use Class#getResource or Class#getResourceAsStream

String reportSource = "/report/Allvendor_personal_info.jrxml";
InputStream is = null;
try
{
    is = getClass().getResourceAsStream(reportSource);
    jasperReport = (JasperReport)JasperCompileManager.compileReport(is);
    jasperPrint = JasperFillManager.fillReport(jasperReport, null, con);
//...
} finally {
    try {
        is.close();
    } catch (Exception exp) {
    }
}

Now, having said that, there should be very little reason to ever compile a .jrxml file at runtime, instead, you should compile these files at build time and deploy the .jasper files instead. This will improve the performance of your application as the complication process is not short even for a basic report.

This would mean you would use...

jasperReport = (JasperReport) JRLoader.loadObjectFromFile(is);

Instead of JasperCompileManager.compileReport

Answer 3

you need to copy folder which has jasper/Jrxml files and put it same directory of your jar file. whenever you write code like this

 String reportSource = "/report/Allvendor_personal_info.jrxml";
//It will look for this file on your location so you need to copy your file on /report/ this location
 InputStream is = null;
 try
{
is = getClass().getResourceAsStream(reportSource);
jasperReport = (JasperReport)JasperCompileManager.compileReport(is);
jasperPrint = JasperFillManager.fillReport(jasperReport, null, con);
//...
 } catch(Exception e){

}

Answer 4

Set environment variables to lib folder of jar files