报告下载未提示用户保存

Question

我正在尝试使用JasperReport在单击按钮时生成一个简单的PDF报告。以下是相关代码：

报告.xhtml：

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

生成报告豆.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();
}

问题是当我使用FireBug时，我可以看到一个响应（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)

但是我没有收到允许我保存 pdf 的弹出窗口。如您所见，我正在开发 Jetty 7.4 maven 插件。我在这里做错了什么吗？

Answer 1

将 ajax="false" 添加到你的命令按钮

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