我必须编写一个代码来生成包含图像的Jasper报告.

我想将jasper报告发送给打印机.

我试过一个代码：

String Report = "C:\\Template\\"+file_name+".jrxml";//my Jasper report file

JasperPrint print = JasperFillManager.fillReport(Report,null,con);

PrinterJob job = PrinterJob.getPrinterJob();

/* Create an array of PrintServices */

PrintService[] services = PrintServiceLookup.lookupPrintServices(null, null);

int selectedService = 0;

/* Scan found services to see if anyone suits our needs *

for(int i = 0; i < services.length;i++)

{

if(services[i].getName().toUpperCase().contains("Your printer's name"))

{

/*If the service is named as what we are querying we select it */

selectedService = i;

}

}

job.setPrintService(services[selectedService]);

PrintRequestAttributeSet printRequestAttributeSet = new HashPrintRequestAttributeSet();

MediaSizeName mediaSizeName = MediaSize.findMedia(4,4,MediaPrintableArea.INCH);

printRequestAttributeSet.add(mediaSizeName);

printRequestAttributeSet.add(new Copies(1));

JRPrintServiceExporter exporter;

exporter = new JRPrintServiceExporter();

exporter.setParameter(JRExporterParameter.JASPER_PRINT, print);

/* We set the selected service and pass it as a paramenter */

exporter.setParameter(JRPrintServiceExporterParameter.PRINT_SERVICE, services[selectedService]);

exporter.setParameter(JRPrintServiceExporterParameter.PRINT_SERVICE_ATTRIBUTE_SET, services[selectedService].getAttributes());

exporter.setParameter(JRPrintServiceExporterParameter.PRINT_REQUEST_ATTRIBUTE_SET, printRequestAttributeSet);

exporter.setParameter(JRPrintServiceExporterParameter.DISPLAY_PAGE_DIALOG, Boolean.FALSE);

exporter.setParameter(JRPrintServiceExporterParameter.DISPLAY_PRINT_DIALOG, Boolean.TRUE);

exporter.exportReport();

但它给了我错误：

net.sf.jasperreports.engine.JRException: Error loading object from file : C:\Template\Alcon_Ele_Temp1.jrxml