如何将HtmlComponent添加到JasperDesign

Question

我设法通过各种搜索将HtmlComponent添加到我的项目中。

我的下一个问题是，我不知道如何将其添加到JasperDesign。 我无法找到任何方法将HtmlComponent添加到JasperDesign（甚至不通过群组等）。

我使用Jasper 5.6.1并设法从iReport工具（5.6.0）中获取HtmlComponent jar（5.0.1）。

我的最终目的是能够在报告中包含HTML表格。我知道它不可能以任何方式，但也许，HTML组件将是最有趣的事情。这样，表格的图像就会出现在我的报告中，这没关系。

这是我当前的代码

private JasperDesign getTable(String html, JasperDesign jasperDesign) {
        HtmlComponent table = new HtmlComponent();
        JRDesignExpression expression = new JRDesignExpression();
        expression.setText(html.replace("\n", ""));
        table.setHtmlContentExpression(expression);
        JRDesignGroup group = new JRDesignGroup();
        group.setName(TABLE_GROUP_PREFIX);
        JRDesignBand groupHeader = new JRDesignBand();
        groupHeader.setHeight(200);
        groupHeader.setSplitType(SplitTypeEnum.IMMEDIATE);
        groupHeader.addElement(table);
        ((JRDesignSection)  group.getGroupHeaderSection()).addBand(groupHeader);

       return jasperDesign;
}

行groupHeader.addElement(table)失败，因为HtmlComponent不是Element，而是Component。

Answer 1

要将组件添加到JRDesign，您需要将其包装在JRDesignComponentElement

中

JRDesignComponentElement ce = new JRDesignComponentElement(design);
ce.setComponentKey(new ComponentKey("http://jasperreports.sourceforge.net/htmlcomponent", "hc", "html"));
ce.setComponent(table);

完整示例

//Create the design
JasperDesign design = new JasperDesign();
design.setWhenNoDataType(WhenNoDataTypeEnum.ALL_SECTIONS_NO_DETAIL); //We will run with no data
design.setName("Html test");
//Add a title band
JRDesignBand title = new JRDesignBand();
title.setHeight(100);
design.setTitle(title);

//Create our component
HtmlComponent hc = new HtmlComponent();
JRDesignExpression expression = new JRDesignExpression();
expression.setText("\"<b>Hello</b> world\"");
hc.setHtmlContentExpression(expression);

//Wrap it in a design componenent
JRDesignComponentElement ce = new JRDesignComponentElement(design);
ce.setComponentKey(new ComponentKey("http://jasperreports.sourceforge.net/htmlcomponent", "hc", "html"));
ce.setComponent(hc);
ce.setHeight(100);
ce.setWidth(100);
title.addElement(ce);

//Compile the design
JasperReport report = JasperCompileManager.compileReport(design);

//Generate the print (passing no datasource, empty)
JasperPrint print = JasperFillManager.fillReport(report, new HashMap<String,Object>());

//Export to pdf
JRPdfExporter exporter = new JRPdfExporter(); 
exporter.setExporterInput(new SimpleExporterInput(print));
exporter.setExporterOutput(new SimpleOutputStreamExporterOutput("pdf/htmlComponent.pdf"));
SimplePdfExporterConfiguration configuration = new SimplePdfExporterConfiguration();
exporter.setConfiguration(configuration);
exporter.exportReport();

输出

^{Hello世界的大量代码，在jrxml中执行报告通常更快}