我们有来自数据库的HTML,我们想用这个HTML创建一个Word报告.此HTML来自用户,可能只包含格式化文本(粗体,斜体…)或以base64方式编码的文本嵌入图像.
例：
<b>My photo :</b> <img src="data:image/png;base64,iVBORw0K... " />
我们知道使用textField,markup =“html”,它不适用于img html标签.使用Jasper Studio 6.3.1,我们尝试使用< hc：html />,它适用于硬盘驱动器上的图像,但它不适用于嵌入式图像,说base64加密有语法错误.
jrxml文件：
<?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="StylesReport" pageWidth="595" pageHeight="842" whenNoDataType="AllSectionsNoDetail" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="30" bottomMargin="30" uuid="53f914b8-f951-4433-971d-6b1819430c56">
<property name="com.jaspersoft.studio.data.defaultdataadapter" value="One Empty Record"/>
<property name="net.sf.jasperreports.export.html.embed.image" value="true"/>
<import value="org.apache.commons.codec.binar.*"/>
<title>
<band height="742">
<textField hyperlinkType="Reference" hyperlinkTarget="Blank">
<reportElement x="0" y="30" width="515" height="30" uuid="c2015c9b-9130-4f39-a09e-c341c91d3794"/>
<textElement textAlignment="Center">
<font size="18"/>
</textElement>
<textFieldExpression><![CDATA["HTML Element Report"]]></textFieldExpression>
</textField>
<componentElement>
<reportElement x="0" y="100" width="230" height="110" backcolor="#ADD8E6" uuid="332dd551-e8cd-4cb0-a11f-7325f481017b"/>
<hc:html xmlns:hc="http://jasperreports.sourceforge.net/htmlcomponent" xsi:schemaLocation="http://jasperreports.sourceforge.net/htmlcomponent http://jasperreports.sourceforge.net/xsd/htmlcomponent.xsd" scaleType="RetainShape" horizontalAlign="Left" verticalAlign="Middle">
<hc:htmlContentExpression><![CDATA["<p style='background-color:yellow;font-family:verdana;font-size:50px;'>Hi,I am through HTML CODE using HTML Component</p><br><br><img src='data:image/gif;base64,/9j/dkjdkdkdkddk(INSERTIMAGEHEREITSTOOLONG!!!)' alt='Japser Architecture' height='1000' width='1800'>"]]></hc:htmlContentExpression>
</hc:html>
</componentElement>
</band>
</title>
</jasperReport>
有可能用Jasper做到这一点吗？我们不想从数据库中解析HTML来做很多事情,我们真的希望HTML在报告中按原样编写.
解决方法
这是一个很好的挑战,问题是它不受支持,但并不意味着它无法完成.
html组件使用JEditorPane将html呈现为图像,并且“data：”没有默认的协议处理程序.
然而,这个优秀的answer到Joop Eggen显示了如何添加一个.
例
jrxml(htmlComponentBase64.jrxml)
<?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="StylesReport" pageWidth="595" pageHeight="842" whenNoDataType="AllSectionsNoDetail" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="30" bottomMargin="30" uuid="53f914b8-f951-4433-971d-6b1819430c56">
<title>
<band height="742">
<textField hyperlinkType="Reference" hyperlinkTarget="Blank">
<reportElement x="0" y="30" width="515" height="30" uuid="c2015c9b-9130-4f39-a09e-c341c91d3794"/>
<textElement textAlignment="Center">
<font size="18"/>
</textElement>
<textFieldExpression><![CDATA["HTML Element Report"]]></textFieldExpression>
</textField>
<componentElement>
<reportElement x="0" y="100" width="230" height="110" backcolor="#ADD8E6" uuid="332dd551-e8cd-4cb0-a11f-7325f481017b"/>
<hc:html xmlns:hc="http://jasperreports.sourceforge.net/htmlcomponent" xsi:schemaLocation="http://jasperreports.sourceforge.net/htmlcomponent http://jasperreports.sourceforge.net/xsd/htmlcomponent.xsd" scaleType="RetainShape" horizontalAlign="Left" verticalAlign="Middle">
<hc:htmlContentExpression><![CDATA["<p style='background-color:yellow;font-family:verdana;font-size:50px;'>Hi,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' alt='Japser Architecture' height='1000' width='1800'>"]]></hc:htmlContentExpression>
</hc:html>
</componentElement>
</band>
</title>
</jasperReport>
java的
添加Joop Eggen的协议处理程序(记得将他归类,也许是一个不错的upvote)并执行这个java代码,在这种情况下导出为pdf
public class TestReport {
public static void main(String[] args) throws JRException {
Handler.install(); //Install Joop's protocol handler
//Compile report and fill,no datasource needed
JasperReport report = JasperCompileManager.compileReport("htmlComponentBase64.jrxml");
JasperPrint jasperPrint = JasperFillManager.fillReport(report,new HashMap<String,Object>());
//Export to pdf
JRPdfExporter exporter = new JRPdfExporter();
exporter.setExporterInput(new SimpleExporterInput(jasperPrint));
exporter.setExporterOutput(new SimpleOutputStreamExporterOutput("pdf/htmlcomponentbase64.pdf"));
SimplePdfExporterConfiguration configuration = new SimplePdfExporterConfiguration();
exporter.setConfiguration(configuration);
exporter.exportReport();
}
}
享受结果
不是最好的报告,但显示图像
I have added a 07004 in jasper-reports community,to include a data protocol handler in future release
