Jasper报告将绝对路径改为相对路径？

Question

public void showReport(int productionNumber) throws JRException {

        try {




            DBConnectionFactory myFactory = DBConnectionFactory.getInstance();
            Connection conn = myFactory.getConnection();

            Map map = new HashMap();
            map.put("prodNum", productionNumber);

            JasperReport jr = JasperCompileManager.compileReport("/Users/user/NetBeansProjects/EGMI/web/Reports/ConsumptionReport.jrxml");
            //Fill the report with parameter, connection and the stream reader     
            JasperPrint jp = JasperFillManager.fillReport(jr, map, conn);

            JasperExportManager.exportReportToPdfFile(jp, "/Users/user/NetBeansProjects/EGMI/web/Reports/ConsumptionReport.pdf");
            JasperViewer.viewReport(jp, true);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

EGMI
   ---Web Pages
        ----Reports
               -----ConsumptionReport.jrxml 

String relativeWebPath = "/Reports";
           String absoluteDiskPath = getServletContext().getRealPath(relativeWebPath);
           File f = new File(absoluteDiskPath, "ConsumptionReport.jrxml");

Answer 1

使用java.io.File从相对路径获取绝对路径。ES.

File f = new File("yourRelativePath/ConsumptionReport.jrxml");
JasperReport jr = JasperCompileManager.compileReport(f.getAbsolutePath());  

为了查找已部署web应用程序的相对路径，我建议您检查这些问题。

需要查找web应用程序路径