java - 将 jasper 报告下载到服务器中的特定位置

Question

我的应用程序正在tomcat服务器中运行，并且我已经开发了一种使用jasper下载pdf文件的方法。我需要做的是将某个 pdf 下载到服务器内的某个位置。我尝试过，但不知道该怎么做。

            jasperReport = JasperCompileManager.compileReport(absolutePathToIndexJSP);
            JasperPrint gh = JasperFillManager.fillReport(jasperReport,parameters, JRdataSource);
            ByteArrayOutputStream baos = new ByteArrayOutputStream();

            Exporter exporter = new Exporter();
            String downloadFileName = "";


            downloadFileName = "Fund-Transfer-Report-" + reportGenerateDate + ".pdf";
                response.setHeader("Content-Disposition", "attachment; filename=" + downloadFileName);
                response.setContentType("application/pdf");
                exporter.exportPdf(response, gh, baos);

这将转到导出器方法，如下所示，

public void exportPdf(HttpServletResponse response, JasperPrint jp, ByteArrayOutputStream baos) throws JRException, IOException {

    //OutputStream ouputStream = new FileOutputStream(new File("C:/JasperReports/Account_Report.pdf"));
    //Get response output stream to download report file
    OutputStream ouputStream = response.getOutputStream();

    // Create a JRPdfExporter instance
    JRPdfExporter pdfExporter = new JRPdfExporter();

    // Here we assign the parameters jp and baos to the exporter
    pdfExporter.setParameter(JRExporterParameter.JASPER_PRINT, jp);
    pdfExporter.setParameter(JRExporterParameter.OUTPUT_STREAM, baos);

    pdfExporter.exportReport();

    ouputStream.write(baos.toByteArray());
    ouputStream.flush();
    ouputStream.close();
  }

这通常是将 pdf 下载到下载文件夹。我需要能够将其下载到服务器中的某个位置。请指教。

Answer 1

您可以使用JasperExportManager将生成的pdf保存到服务器中的特定位置

JasperExportManager.exportReportToPdfFile(jasperPrint, exportPath);

例如:

String exportDir = System.getProperty("jboss.server.config.dir") +"/jasperreport/export";
String exportPath = exportDir + "/reportName.pdf";
JasperReport jasperReport = CompileManager.compileReport(jrxmlFilePath, mainReportName);
JasperPrint jasperPrint =JasperFillManager.fillReport(jasperReport, parameters, jsonDataSource);
JasperExportManager.exportReportToPdfFile(jasperPrint, exportPath);