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Stimulsoft Ultimate是用于创建报表和仪表板的通用工具集。该产品包括用于WinForms、ASP.NET、.NET Core、JavaScript、WPF、PHP、Java和其他环境的完整工具集。

Stimulsoft Reports不仅拥有强大的报表导出系统，而且还支持多种报表导出格式，拥有简单且强大的报表引擎。Stimulsoft Reports基本原则是，用简单常规的方法创建报表，将不同的技术应用于应用程序。Stimulsoft Reports.Java是一个专为在Java应用程序中的报表进行交互和处理的报表工具。

点击下载Stimulsoft Reports.Java v2021.3.1最新版

此示例项目展示了在运行时使用关系和自定义对象数据库创建报告的可能性。

首先，创建一个将存储数据的对象类：

public class ObjectCell {
	public String val;
	
	@Override
	public boolean equals(Object obj) {
		return val.equals(((ObjectCell) obj).val);
	}
	
	public String toString() {
		return val;
	}
	
	public ObjectCell(String val) {
		this.val = val;
	}
}

接下来，创建从 StiDatabase 类扩展的父数据库并在连接事件上填充数据：

public class ParentDatabase extends StiDatabase {
	
	public ParentDatabase() {
		super("Demo.Parent"); // Database name
	}
	
	public void connect(StiDataStoreSource stiDataStoreSource, Boolean fillTable) throws StiException {
		DataTable dataTable = stiDataStoreSource.createNewTable();
		for (int i = 0; i < 5; i++) { DataRow dataRow = dataTable.createNewRow(); dataRow.addCell("cId", new ObjectCell("Object" + i)); dataRow.addCell("cName", "Parent cId: " + i); } stiDataStoreSource.setDataTable(dataTable); } public void disconnect() { } public void connect(StiDataStoreSource stiDataStoreSource) throws StiException { connect(stiDataStoreSource, true); } }

接下来，创建相同的子数据库：

public class ChildDatabase extends StiDatabase {
	
	public ChildDatabase() {
		super("Demo.Child"); // Database name
	}
	
	public void connect(StiDataStoreSource stiDataStoreSource, Boolean fillTable) throws StiException {
		DataTable dataTable = stiDataStoreSource.createNewTable();
		for (int i = 0; i < 5; i++) { for (int k = 0; k < 5; k++) { DataRow dataRow = dataTable.createNewRow(); dataRow.addCell("cId", new ObjectCell("Object" + i)); for (int j = 1; j < dataRow.getColumns().size(); j++) { // fill row wiht my data dataRow.addCell(dataRow.getColumns().get(j).getColumnName(), "Child cId: " + i + " value: " + j); } } } stiDataStoreSource.setDataTable(dataTable); } public void disconnect() { } public void connect(StiDataStoreSource stiDataStoreSource) throws StiException { connect(stiDataStoreSource, true); } }

要显示报告，我们需要创建 Java 查看器。创建 JFrame，设置必要的选项并添加查看器控件：

public class CreateRelationsReport extends JPanel {
	
	private static final long serialVersionUID = 330448692680237867L;
	private static final Dimension FRAME_SIZE = new Dimension(800, 800);
	public static void main(final String[] args) {
		SwingUtilities.invokeLater(new Runnable() {
			public void run() {
				try {
					JFrame frame = new JFrame();
					frame.add(new CreateRelationsReport(frame));
					frame.setSize(FRAME_SIZE);
					frame.setLocationRelativeTo(null);
					frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
					frame.setVisible(true);
				} catch (Throwable e) {
					StiExceptionProvider.show(e, null);
				}
			}
		});
	}
	public CreateRelationsReport(final JFrame parentFrame) throws IOException {
		setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
		setPreferredSize(FRAME_SIZE);
		StiViewerFx viewerPanel = new StiViewerFx(parentFrame);
		add(viewerPanel);

...

接下来，创建新的报表对象，然后向其中添加父数据库和子数据库：

...

		StiReport report = new StiReport();
		
		StiPage page = new StiPage(report);
		report.getPages().add(page);
		page.setName(StiNameCreation.createName(report, StiNameCreation.generateName(page)));
		report.setDictionary(new StiDictionary(report));
		report.getDictionary().getDatabases().add(new ParentDatabase());
		report.getDictionary().getDatabases().add(new ChildDatabase());

...

接下来，在对象表源中设置自定义列：

...

		ListtableSources = new ArrayList();
		// parent
		StiDataTableSource tSource = new StiDataTableSource("Demo.Parent", "Parent", "Parent");
		tSource.setColumns(new StiDataColumnsCollection());
		tSource.getColumns().add(
			new StiDataColumn("cId", "cId", StiSystemType.getSystemType("System.Object")));
		tSource.getColumns().add(
			new StiDataColumn("cName", "cName", StiSystemType.getSystemType("System.String")));
		tSource.setDictionary(report.getDictionary());
		report.getDictionary().getDataSources().add(tSource);
		tableSources.add(tSource);
		// child
		tSource = new StiDataTableSource("Demo.Child", "Child", "Child");
		tSource.setColumns(new StiDataColumnsCollection());
		tSource.getColumns().add(
			new StiDataColumn("cId", "cId", StiSystemType.getSystemType("System.Object")));
		for (int i = 0; i < 4; i++) { tSource.getColumns().add( new StiDataColumn("cData" + i, "cData" + i, StiSystemType.getSystemType("System.String"))); } tSource.setDictionary(report.getDictionary()); report.getDictionary().getDataSources().add(tSource); tableSources.add(tSource); ...

将带有文本框的标题栏和数据栏添加到报告中：

...

		// Create TitleBand
		StiHeaderBand titleBand = new StiHeaderBand();
		titleBand.setHeight(0.85);
		titleBand.setName("TitleBand");
		page.getComponents().add(titleBand);
		
		// Create Title text on header
		StiText headerText = new StiText(new StiRectangle(0, 0, page.getWidth(), 0.85));
		headerText.setTextInternal("Tacticdescription");
		headerText.setHorAlignment(StiTextHorAlignment.Left);
		headerText.setName("TitleHeader");
		headerText.setFont(new StiFont("Arial", 12F, StiFontStyle.Bold));
		titleBand.getComponents().add(headerText);
		Integer nameIndex = 1;
		ListdataBands = new ArrayList();
		for (StiDataTableSource tableSource : tableSources) {
			// Create Databand
			StiDataBand dataBand = new StiDataBand();
			dataBand.setDataSourceName(tableSource.getName());
			dataBand.setHeight(0.5);
			dataBand.setName("DataBand" + nameIndex);
			nameIndex++;
			page.getComponents().add(dataBand);
			
			double pos = 0;
			double columnWidth = page.getWidth() / tableSource.getColumns().size();
			
			for (StiDataColumn dataColumn : tableSource.getColumns()) {
				StiText dataText = new StiText(new StiRectangle(pos, 0, columnWidth, 0.5));
				dataText.setText("{" + tableSource.getName() + "." + dataColumn.getName() + "}");
				dataText.setName("DataText" + nameIndex.toString());
				dataText.getBorder().setSide(StiBorderSides.All);
				dataBand.getComponents().add(dataText);
				
				pos = pos + columnWidth;
				nameIndex++;
			}
			dataBands.add(dataBand);
		}

...

报告的所有组件都已创建，我们现在可以配置数据关系：

...

		dataBands.get(1).setDataRelationName("Relation");
		dataBands.get(1).setMasterComponent(dataBands.get(0));
		
		ArrayListcols = new ArrayList();
		cols.add("cId");
		
		StiDataRelation rel = new StiDataRelation("Relation", tableSources.get(0), tableSources.get(1), cols, cols);
		report.getDictionary().getRelations().add(rel);

...

最后，呈现报告并将其显示在 Java 查看器中：

...

		report.Render();
		
		viewerPanel.getStiViewModel().getEventDispatcher().dispatchStiEvent(
			new StiViewCommonEvent(StiViewCommonEvent.DOCUMENT_FILE_LOADED,
			new StiDocument(report), null));
	}

在下面的屏幕截图中，您可以看到示例代码的结果：

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