can't seem to view my ireport file in java

Question

My problem is I can't seem to view the ireport file that i created and saved. here is the java coding:

private void btnreportActionPerformed(java.awt.event.ActionEvent evt) {                                          
    Connection c; 

    try {
        c = DBConnect.DB();
        String report = "C:\\Users\\p.bwalya\\Documents\\Reports\\NPS Report.jrprint ";
        JasperReport JR = JasperCompileManager.compileReport(report);
        JasperPrint JP = JasperFillManager.fillReport(JR,null,c);
        JasperViewer.viewReport(JP);
    } catch(SQLException | JRException e) {
        e.printStackTrace();
    }
}

and here is the error message:

net.sf.jasperreports.engine.JRException:
org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; Invalid byte 1 of 1-byte UTF-8 sequence.
at net.sf.jasperreports.engine.xml.JRXmlLoader.loadXML(JRXmlLoader.java:302)
at net.sf.jasperreports.engine.xml.JRXmlLoader.loadXML(JRXmlLoader.java:285)
at net.sf.jasperreports.engine.xml.JRXmlLoader.load(JRXmlLoader.java:274)
at net.sf.jasperreports.engine.xml.JRXmlLoader.load(JRXmlLoader.java:219)
at net.sf.jasperreports.engine.xml.JRXmlLoader.load(JRXmlLoader.java:194)
at net.sf.jasperreports.engine.xml.JRXmlLoader.load(JRXmlLoader.java:185)
at net.sf.jasperreports.engine.JasperCompileManager.compile(JasperCompileManager.java:288)
at net.sf.jasperreports.engine.JasperCompileManager.compileReport(JasperCompileManager.java:575)
at ireport.main(ireport.java:35)

Does anyone know what is wrong with my code?

The best way is to pre compile the jrxml and import to source the .jasper file so as to avoid compiling it every time! — Lefteris Bab, Nov 20 '15 at 16:33

score 0 · Accepted Answer · edited May 23 '17 at 10:33

You compile the jrxml file not the .jasper file (its already complied) nor the jrprint (JasperPrint object, its already filled)

String report = "C:\\Users\\p.bwalya\\Documents\\Reports\\NPS Report.jrprint ";
JasperReport JR = JasperCompileManager.compileReport(report);

you need to pass the .jrxml

es.

String report = "C:\\Users\\p.bwalya\\Documents\\Reports\\NPS_Report.jrxml";
JasperReport JR = JasperCompileManager.compileReport(report);

If you like to know more about the different jasper report formats..

what-is-the-difference-between-jasperreport-formats

Note:

if you already have the .jasper file there is no need to compile the jrxml, just pass the .jasper file to the fillReport instead of the JasperReport see @Lefteris Bab comment.
in the fillReport consider passing an empty HashMap instead of null.

can't seem to view my ireport file in java

1 Answers1