JasperReport：是否可以在PDF中设置初始缩放？

发布于 2024-12-28 10:19:21 字数 772 浏览 1 评论 0原文

我有一个导出为 PDF 的 JasperPrint，它显示为嵌入到网页中。

是否可以以任何方式设置初始缩放？

我知道如何使用 POI （通过 javascript）来做到这一点，但我找不到在 Jasper 中添加 JavaScript 代码的方法...

编辑：

感谢@AlexK的链接，我找到了解决方案:)

public ByteArrayOutputStream fillPDF(JasperPrint jasperPrint) {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    try{
        JRPdfExporter exporter = new  JRPdfExporter();
        exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
        exporter.setParameter(JRPdfExporterParameter.PDF_JAVASCRIPT, "this.zoom = 70;");
        exporter.setParameter(JRPdfExporterParameter.OUTPUT_STREAM,baos); 
        exporter.exportReport(); 
    }catch (Throwable e){
    }
    return baos;
}

原文

I have a JasperPrint that is exported to PDF and it's showing embedded into a web page.

Is it possible to set the initial zoom in any way?

I know how to do it with POI (by javascript), but I don't find the way to add the JavaScript code in Jasper...

EDIT:

Thanks to the link of @ AlexK, I found the solution :)

public ByteArrayOutputStream fillPDF(JasperPrint jasperPrint) {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    try{
        JRPdfExporter exporter = new  JRPdfExporter();
        exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
        exporter.setParameter(JRPdfExporterParameter.PDF_JAVASCRIPT, "this.zoom = 70;");
        exporter.setParameter(JRPdfExporterParameter.OUTPUT_STREAM,baos); 
        exporter.exportReport(); 
    }catch (Throwable e){
    }
    return baos;
}

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黑寡妇 2025-01-04 10:19:21

@ganzux 的回答。可以在 JavaScript 的帮助下设置缩放。

表达式为： this.zoom = 70;

代码片段为：

public ByteArrayOutputStream fillPDF(JasperPrint jasperPrint) {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    try{
        JRPdfExporter exporter = new  JRPdfExporter();
        exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
        exporter.setParameter(JRPdfExporterParameter.PDF_JAVASCRIPT, "this.zoom = 70;");
        exporter.setParameter(JRPdfExporterParameter.OUTPUT_STREAM,baos); 
        exporter.exportReport(); 
    }catch (Throwable e){
    }
    return baos;
}

The answer by @ganzux. The zoom can be set with help of JavaScript.

The expression will be: this.zoom = 70;

The snippet is:

public ByteArrayOutputStream fillPDF(JasperPrint jasperPrint) {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    try{
        JRPdfExporter exporter = new  JRPdfExporter();
        exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
        exporter.setParameter(JRPdfExporterParameter.PDF_JAVASCRIPT, "this.zoom = 70;");
        exporter.setParameter(JRPdfExporterParameter.OUTPUT_STREAM,baos); 
        exporter.exportReport(); 
    }catch (Throwable e){
    }
    return baos;
}

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