将jasper pdf直接发送到Web应用程序中的打印机

这很可能是幸运的，因为否则在互联网上导航时，您会看到人们在打印机上打印很多广告....如果您想将其发送到服务器上的打印机，则可以这样做！如果它是服务器打印机，请告诉我，我可以为您传递一些代码.I need to send a pdf jasper directly to the printer, the current code PDF is delegated to the browser and therefore the user can print as many copies as desired. Must allow only print one copy, so I thought I'd send directly to printing.I searched the forum but did not understand what would be the best solution to the issue.Take a look at my code:public class UtilRelatorios {public static void imprimeRelatorio(String relatorioNome, HashMap parametros) throws IOException, JRException { FacesContext fc = FacesContext.getCurrentInstance(); ServletContext context = (ServletContext) fc.getExternalContext().getContext(); HttpServletResponse response = (HttpServletResponse) FacesContext.getCurrentInstance().getExternalContext().getResponse(); JasperPrint jasperPrint = JasperFillManager.fillReport( context.getRealPath("/relatorios")+ File.separator+relatorioNome+".jasper", parametros); //int finalPag = jasperPrint.getPages().size(); //System.out.println("page: "+finalPag); //JasperPrintManager.printPage(jasperPrint,finalPag,false); byte[] b = null; //JasperPrintManager.printPage(jasperPrint, 0, false); try { b = JasperExportManager.exportReportToPdf(jasperPrint); } catch (Exception e) { e.printStackTrace(); } finally { } if (b != null && b.length > 0) { // Envia o relatório em formato PDF para o browser response.setContentType("application/pdf"); int codigo = (int) (Math.random()*1000); response.setHeader("Content-disposition","inline);filename=relatorio_"+codigo+".pdf"); response.setContentLength(b.length); ServletOutputStream ouputStream = response.getOutputStream(); ouputStream.write(b, 0, b.length); ouputStream.flush(); ouputStream.close(); } }} 解决方案 If as seems in question you like to send the report directly to user's printer via web application, browser.This can not be done!, you can not control the web users printer directly from the browser (excluding the use of activeX or other home made plugins)Probably this is luck since otherwise while navigating on internet you would have people printing alot of advertising on your printer....If instead you like to send it to a printer attached to server, this can be done!If its the server printer please let me know and I can pass you some code. 这篇关于将jasper pdf直接发送到Web应用程序中的打印机的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！