Getting.net.sf.jasperreports.engine.JREException：当传递 java.awt.Image 作为参数时，在位置找不到字节数据

Question

I get the exception above when I try to display an image chosen from JFileChooser for passing to JasperReports report, can anyone please help me to figure out it?

The steps I followed are:

1. added a parameter named photo via report inspector and set its parameter class to Object
2. dragged and dropped an image from the palette and gave its expression class as java.awt.Image and Image Expression to $P{photo}

This is the image element in.jrxml file

<image>
   <reportElement x="315" y="0" width="195" height="77" uuid="59390988-25fc-4d62-80c4-bc19b80b0fa0"/>
   <imageExpression><![CDATA[$P{photo}]]></imageExpression>
</image>

These are the code examples i referred and used to generate the report.

Image photo;
JFileChooser fc = new JFileChooser();

private void getPicture() {
    fc.setFileFilter(new FileNameExtensionFilter("Images", "jpg", "gif", "bmp"));
    if (fc.showOpenDialog(this) == JFileChooser.APPROVE_OPTION) {
        fc.setCurrentDirectory(fc.getCurrentDirectory());

        ImageIcon icon = new ImageIcon(fc.getSelectedFile().getAbsolutePath());
        icon = new ImageIcon(icon.getImage().getScaledInstance(350, 350, Image.SCALE_DEFAULT));
        photo = icon.getImage();
    }

    if (photo == null) {
        System.out.println("null");
    }

    System.out.println("path= " + fc.getSelectedFile().getAbsolutePath());
    Map<String, Object> param = new HashMap<String, Object>();
    param.put("photo", photo);

    generateReports(param);
}


private void generateReports(Map param) {
    try {

        String source = "C:\\newReport.jrxml";

        if (new File(source).exists() == false) {
            System.out.println("Please  report Source does not exist");
            return;
        }

        JasperReport jasperReport = JasperCompileManager.compileReport(source);
        JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, param, new JREmptyDataSource());
        JasperViewer.viewReport(jasperPrint, false);
    } catch (Exception e) {
        System.out.println("reports Error " + e.toString());
    }
}

Answer 1

go to your xml and do this, the location of my image is as seen below it works for me thanks

imageExpression>![CDATA["src\\Forms\\leaf_banner_gray.png

Answer 2

The below line of code working fine when I do preview of the PDF from JasperStudio but not while creating PDF from Java.

<imageExpression>![CDATA["src\Forms\leaf_banner_gray.png"]]</imageExpression>

Finally, we found the solution.

//declared a property leafBanner of type InputStream
<parameter name="leafBanner" class="java.io.InputStream"/>
//leafBanner property has been used below
<imageExpression>![CDATA[$P{leafBanner}]]</imageExpression>

Below is the code to pass image as stream from Java.

Map<String, Object> params = new HashMap<>();
File leafBanner= ResourceUtils.getFile("src//main//resources//images//leafBanner.PNG");
FileInputStream leafBannerStream = new FileInputStream(leafBanner);
params.put("leafBanner", leafBannerStream);