Why Are Cyrillic Characters Not Showing in My Jasper Reports PDF Exports?

Cyrillic Characters Not Displaying in Jasper Reports PDF Exports

Jasper Reports has been facing an issue where Cyrillic characters do not appear in PDF exports, even though they are displayed correctly in Excel exports. Despite specifying the "UTF-8" character encoding, the problem persists.

To resolve this, it's essential to consider the following checklist:

1. Font Support and Character Rendering

Verify that the TTF font being used supports OpenType and can render Cyrillic characters. Not all fonts can handle the full Unicode range.

2. Correct Encoding

Ensure that the correct encoding is applied to iText. The recommended approach is to use Identity-H encoding, which supports mixing different encodings and is compliant with newer PDF standards.

3. Font Embedding

Embed the font into the PDF to enable computers without the font installed to display the Cyrillic content correctly. This can be achieved using the PDF exporter parameter:

e.setParameter(JRPdfExporterParameter.EMBEDDED, true);

Jasper Report Implementation

To ensure that these settings are properly applied in Jasper Reports, follow the current non-deprecated method:

Font Extensions:

Create font extensions using iReport or JasperSoft Studio. These extensions can be easily included in your classpath and provide control over font properties.

Example:

<fontextensions>
  <extension>
    <defaultfontalias>Helvetica</defaultfontalias>
    <fontfile>Helvetica.ttf</fontfile>
    <pdfencoding>Identity-H</pdfencoding>
    <ispdfembedded>true</ispdfembedded>
  </extension>
</fontextensions>

By implementing these recommendations, you can address the issue of missing Cyrillic values in Jasper Reports PDF reports. Please note that the original problem experienced by the user involved a font that could not render the Cyrillic characters, but it's important to consider all three checklist items to ensure a comprehensive solution.

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