JasperReports class path

问题

I want to include the .jrxml file in my NetBeans swing project. I use NetBeans 7.0.1. I created a package inside source package called "rep" and created a simple .jrxml file called "rp.jrxml". I have installed the iReport plugin in NetBeans. When I set a outer .jrxml file, it is showed ("D:/MyReports/firstreport.jrxml") but when I set the NetBeans package path, it was not shown. Here is my code.

try {
       String reportSource="/rep/rp.jrxml";  //and also "rep/rp.jrxml" is used.no result.            
        Map<String, Object> params = new HashMap<String, Object>();
        JasperReport jasperReport = JasperCompileManager.compileReport(reportSource);
        JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, params, new JREmptyDataSource());
        JasperViewer.viewReport(jasperPrint, false);
    } catch (Exception e) {e.printStackTrace();
    }

Then the following error is given;

net.sf.jasperreports.engine.JRException: java.io.FileNotFoundException: rep\rp.jrxml (The system cannot find the path specified)

How I can keep jrxml files inside my NetBeans project and use jrxml files inside the project?

回答1:

This code works for me:

public class TestJasper {

    public static void main(String[] args) {
        try {
            String reportSource = "resources/report1.jrxml";
            Map<String, Object> params = new HashMap<String, Object>();
            JasperReport jasperReport = JasperCompileManager.compileReport(reportSource);
            JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, params, new JREmptyDataSource());
            JasperViewer.viewReport(jasperPrint, false);
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }
}

My project structure:

build
    classes
        TestJasper.class
dist 
nbproject
resources
    report1.jrxml 
src
    TestJasper.java

UPDATED:
For solving net.sf.jasperreports.engine.JRException: No report compiler set for language : null problem you can try to set groovy report language and add groovy-all-jdk14 library to classpath.
You can get groovy library here.

The sample of report header with language set to groovy:

<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" 
... 
language="groovy" 
...>

回答2:

Here the solution.It is better to provide an absolute path in the jar file itself.Also when the jar is run,using *.jasper file is better to use instead of .jrxml it may cause for the speed of generating the report as well.Then that .jasper can be sent to JasperFillManager as a inputstream. That is it.

来源：https://stackoverflow.com/questions/7823756/jasperreports-class-path

标签

java

swing

jasper-reports

ireport