jasperReport实现页面嵌套pdf预览

net.sf.jasperreports.engine.JasperExportManager.exportReportToPdfStream(InputStream arg0, OutputStream arg1) 能够实现导出pdf到输出流，但是因为JasperExportManager的exportReportToPdfStream没有设计字体，导致有时候实现不了粗体的功能。

查看JasperExportManager.exportReportToPdfStream的源码就明白了：

  public static void exportReportToPdfStream(JasperPrint jasperPrint, OutputStream outputStream)
    throws JRException
  {
    JRPdfExporter exporter = new JRPdfExporter();

    exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
    exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, outputStream);

    exporter.exportReport();
  }

 

因此我们可以自己写一段代码代替JasperExportManager.exportReportToPdfStream，如下

 JRPdfExporter exporter = new JRPdfExporter();
     Map fontsMap = new HashMap();
      
        fontsMap.put(new FontKey("宋体", true, false), new PdfFont("STSong-Light", "UniGB-UCS2-H", true, true, false));
        exporter.setParameter(JRExporterParameter.FONT_MAP, fontsMap);
        exporter.setParameter(JRExporterParameter.JASPER_PRINT, jPrint);
        exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, out);
        exporter.exportReport();

 

整个实现页面嵌套pdf预览的代码如下：

Map ireportMap = new HashMap();
          ireportMap.put("clientNo", "D000000925");
         ireportMap.put("clientName", "测试客户");
          ireportMap.put("barCode", "CS0100000002333");
         ireportMap.put("barCodeStr", "C  S  0  1  0  0  0  0  0  0  0  2  3  3  3");
         
         ireportMap.put("ImagePath", request.getRealPath("images/logo_print.jpg"));
         ClassLoader classLoader = RiskConfirmController.class.getClassLoader();
   OutputStream out = null;
   try {
    out = response.getOutputStream(); // 获取页面输出流
    response.setContentType("application/pdf; charset=utf-8"); // 设置页面类型及编码
    response.setDateHeader("Expires", 0); // 清除页面缓存
    //risk_controler_confirm.jasper   riskcontrolerconfirm
    response.setHeader("Content-Disposition", "inline;filename="+ URLEncoder.encode("risk_controler_confirm.pdf", "utf-8")); // 设置文件名
    JasperPrint jPrint = JasperFillManager.fillReport(classLoader.getResourceAsStream("risk_controler_confirm.jasper"),ireportMap, new JREmptyDataSource()); // 模板填充数据
   
    JRDesignReportFont jrfont =  new JRDesignReportFont();
    //JasperExportManager.exportReportToPdfStream(jPrint, out); // 生成PDF输出流
         JRPdfExporter exporter = new JRPdfExporter();
     Map fontsMap = new HashMap();
      
        fontsMap.put(new FontKey("宋体", true, false), new PdfFont("STSong-Light", "UniGB-UCS2-H", true, true, false));
        exporter.setParameter(JRExporterParameter.FONT_MAP, fontsMap);
        exporter.setParameter(JRExporterParameter.JASPER_PRINT, jPrint);
        exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, out);
        exporter.exportReport();
    if (out != null){
     out.flush();
    }