Question

我正在尝试使用JasperReport在按钮点击时生成一个简单的PDF报告。这是相关的代码：

report.xhtml：

<p:commandButton value="#{msg['report.generate']}" action="#{generateReportBean.generateReport}" />

GenerateReportBean.java：

public void generateReport() throws JRException, IOException {
    FacesContext facesContext = FacesContext.getCurrentInstance();
    ExternalContext externalContext = facesContext.getExternalContext();
    HttpServletResponse response = (HttpServletResponse) externalContext
            .getResponse();

    InputStream reportStream = facesContext.getExternalContext().getResourceAsStream("/WEB-INF/reports/report.jrxml");
    JasperDesign jasperDesign = JRXmlLoader.load(reportStream);
    JasperReport jasperReport = JasperCompileManager.compileReport(jasperDesign);
    byte[] report = JasperRunManager.runReportToPdf(jasperReport, new HashMap(), new JREmptyDataSource());

    response.setContentType("application/pdf");
    response.setContentLength(report.length);
    response.setHeader("Content-disposition", "attachment; filename=report.pdf" );

    ServletOutputStream servletOutputStream = response.getOutputStream();
    servletOutputStream.write(report);
    servletOutputStream.flush();
    servletOutputStream.close();
    facesContext.responseComplete();

}

问题在于，当我使用FireBug时，我可以看到响应（对我来说没关系）：

X-Powered-By    JSF/2.0
Content-Type    application/pdf
Content-Length  1310
Content-Disposition attachment; filename=report.pdf
Server  Jetty(7.4.0.v20110414)

但是我没有得到允许我保存pdf的弹出窗口。正如您所看到的，我正在使用Jetty 7.4 maven插件进行开发。我在这里做错了吗？

Answer 1

将ajax =“false”添加到commandButton

<p:commandButton ajax="false" value="#{msg['report.generate']}" action="#{generateReportBean.generateReport}" />

报告下载不提示用户保存

1 个答案: