相关疑难解决方法(0)

我有一个带有glassfish 3.1 + JSF的EJB站点,用于jasperreport 4.0.1.该网站在流式传输pdf上没有问题,但是在使用runReportToPdfStream打印PDF时它产品为空白PDF,下面是代码片段:

EJB

public class BookEJB {  
    public void printReport() throws ClassNotFoundException, IOException, JRException {
        Map parameterMap = new HashMap();

        FacesContext ctx = FacesContext.getCurrentInstance();
        HttpServletResponse response = (HttpServletResponse) ctx.getExternalContext().getResponse();
        InputStream reportStream = ctx.getExternalContext().getResourceAsStream("/reports/test.jasper");

        ServletOutputStream servletOutputStream = response.getOutputStream();
        servletOutputStream.flush();

        response.setContentType("application/pdf");
        JasperRunManager.runReportToPdfStream(reportStream, servletOutputStream, parameterMap);

        servletOutputStream.flush();
        servletOutputStream.close();
        ctx.responseComplete();
}}

test.jrxml - 没有SQL连接的简单报告

<?xml version="1.0" encoding="UTF-8"?>
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="test" pageWidth="800" pageHeight="1200" columnWidth="555" leftMargin="25" rightMargin="25" topMargin="30" bottomMargin="30">
    <property name="ireport.zoom" value="1.0"/>
    <property name="ireport.x" value="0"/>
    <property name="ireport.y" value="0"/>
    <queryString>
        <![CDATA[]]>
    </queryString> …