Grails IReport Jasper返回空白页面 [英] Grails IReport Jasper returns blank page

问题描述

我有这个问题，不得不在我的grails应用程序上显示我的碧玉报告。
在应用程序中，我使用以下命令安装了jasper插件： grails> install-plugin jasper
我创建了 sample.jrxml 拥有这个上下文：

I have this problem having to display my jasper report on my grails application. On the application I've installed the jasper plugin using the command: grails> install-plugin jasper I have created sample.jrxml having this context:

<?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="student" language="groovy" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20">
    <property name="ireport.zoom" value="1.2100000000000002"/>
    <property name="ireport.x" value="0"/>
    <property name="ireport.y" value="0"/>
    <background>
        <band splitType="Stretch"/>
    </background>
    <title>
        <band height="79" splitType="Stretch">
            <staticText>
                <reportElement x="181" y="0" width="212" height="37"/>
                <textElement textAlignment="Center">
                    <font size="24"/>
                </textElement>
                <text><![CDATA[Portal Student List]]></text>
            </staticText>
        </band>
    </title>
    <columnHeader>
        <band height="26"/>
    </columnHeader>
    <detail>
        <band height="98" splitType="Stretch"/>
    </detail>
    <columnFooter>
        <band height="43" splitType="Stretch"/>
    </columnFooter>
    <pageFooter>
        <band height="54" splitType="Stretch">
            <staticText>
                <reportElement x="238" y="0" width="100" height="20"/>
                <textElement textAlignment="Center"/>
                <text><![CDATA[Copyright]]></text>
            </staticText>
        </band>
    </pageFooter>
</jasperReport>

我使用Jasper标记< g： jasperReport jasper =studentformat =PDF/> 或创建一个新的闭包，使用此代码将.pdf文件直接显示给浏览器：

And I am calling the report either using the Jasper Tag <g:jasperReport jasper="student" format="PDF"/> or creating a new closure that would display the .pdf file directly to the browser using this code:

def report() {
        def reportDef = new JasperReportDef(folder: 'reports', name:'student.jrxml', fileFormat: JasperExportFormat.PDF_FORMAT)
        reportDef.contentStream = jasperService.generateReport(reportDef)

        response.contentType = reportDef.fileFormat.mimeTyp
        response.characterEncoding = 'UTF-8'
        response.outputStream << reportDef.contentStream.toByteArray()
}

使用的任何一种方法都会返回一个空白

Either of the methods used returns a single blank page.

如何解决此问题？

谢谢

Thanks

推荐答案

我可能必须在这个链接伴随着Jasper自己提供的例子，它提供了这里 a>。

I may have to resolve to the tutorials provided by Grails in this link accompanied by the example given by Jasper itself provided here.

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