如何在演示文稿中创建图表

一款新的 Aspose.Slides for Java API 已经发布，现在这个单一产品支持从头生成 PowerPoint 文档以及编辑现有文档的功能。

对旧代码的支持

为了使用使用 Aspose.Slides for Java 早于 14.x.x 版本开发的旧代码，您需要在代码中进行一些小的更改，代码将如之前一样工作。所有在旧版 Aspose.Slides for Java 中位于 com.aspose.slides 和 com.aspose.slides.pptx 命名空间下的类现在合并为单一的 com.aspose.slides 命名空间。请查看以下简单代码片段，该片段使用旧版 Aspose.Slides API 从头创建普通图表，并遵循描述如何迁移到新合并 API 的步骤。

旧版 Aspose.Slides for Java 方法

	//Instantiate PresentationEx class that represents PPTX file
	PresentationEx pres = new PresentationEx();

	//Access first slide
	SlideEx sld = pres.getSlides().get_Item(0);

	// Add chart with default data
	ChartEx chart = sld.getShapes().addChart(ChartTypeEx.ClusteredColumn, 0, 0, 500, 500);

	//Setting chart Title
	chart.getChartTitle().getText().setText("Sample Title");
	chart.getChartTitle().getText().setCenterText(true);
	chart.getChartTitle().setHeight(20f);
	chart.hasTitle(true);

	//Set first series to Show Values
	chart.getChartData().getSeries().get_Item(0).getLabels().setShowValue(true);


	//Setting the index of chart data sheet
	int defaultWorksheetIndex = 0;

	//Getting the chart data worksheet
	ChartDataCellFactory fact = chart.getChartData().getChartDataCellFactory();

	//Delete default generated series and categories
	chart.getChartData().getSeries().clear();
	chart.getChartData().getCategories().clear();
	int s = chart.getChartData().getSeries().getCapacity();

	//Adding new series
	chart.getChartData().getSeries().add(fact.getCell(defaultWorksheetIndex, 0, 1, "Series 1"), chart.getType());
	chart.getChartData().getSeries().add(fact.getCell(defaultWorksheetIndex, 0, 2, "Series 2"), chart.getType());

	//Adding new categories
	chart.getChartData().getCategories().add(fact.getCell(defaultWorksheetIndex, 1, 0, "Caetegoty 1"));
	chart.getChartData().getCategories().add(fact.getCell(defaultWorksheetIndex, 2, 0, "Caetegoty 2"));
	chart.getChartData().getCategories().add(fact.getCell(defaultWorksheetIndex, 3, 0, "Caetegoty 3"));

	//Take first chart series
	ChartSeriesEx series = chart.getChartData().getSeries().get_Item(0);

	//Now populating series data
	series.getValues().add(fact.getCell(defaultWorksheetIndex, 1, 1, 20));
	series.getValues().add(fact.getCell(defaultWorksheetIndex, 2, 1, 50));
	series.getValues().add(fact.getCell(defaultWorksheetIndex, 3, 1, 30));

	//Setting fill color for series
	series.getFormat().getFill().setFillType(FillTypeEx.Solid);
	series.getFormat().getFill().getSolidFillColor().setColor(new java.awt.Color(com.aspose.slides.PresetColorEx.Red));

	//Take second chart series
	series = chart.getChartData().getSeries().get_Item(1);

	//Now populating series data
	series.getValues().add(fact.getCell(defaultWorksheetIndex, 1, 2, 30));
	series.getValues().add(fact.getCell(defaultWorksheetIndex, 2, 2, 10));
	series.getValues().add(fact.getCell(defaultWorksheetIndex, 3, 2, 60));

	//Setting fill color for series
	series.getFormat().getFill().setFillType(FillTypeEx.Solid);
	series.getFormat().getFill().getSolidFillColor().setColor(new java.awt.Color(PresetColorEx.Green));

	//create custom lables for each of categories for new series

	//first label will be show Category name
	DataLabelEx lbl = new DataLabelEx(series);
	lbl.setShowCategoryName( true);
	lbl.setId (0);
	series.getLabels().add(lbl);

	//Show series name for second label
	lbl = new DataLabelEx(series);
	lbl.setShowSeriesName(true);
	lbl.setId(1);
	series.getLabels().add(lbl);

	//show value for third label
	lbl = new DataLabelEx(series);
	lbl.setShowValue(true);
	lbl.setShowSeriesName(true);
	lbl.setSeparator("/");
	lbl.setId( 2);
	series.getLabels().add(lbl);

	// show value and custom text
	lbl = new DataLabelEx(series);
	lbl.getTextFrame().setText( "My text");
	lbl.setId( 3);
	series.getLabels().add(lbl);

	// Save presentation with chart
	pres.write("D:\\Aspose Data\\AsposeChart.pptx");

view raw Examples-src-main-java-com-aspose-slides-examples-Slides-Charts-CreateChartEx-CreateChartEx.java hosted with ❤ by GitHub

新 Aspose.Slides for Java 14.x.x 方法

	//Instantiate Presentation class that represents PPTX file
	Presentation pres = new Presentation();

	//Access first slide
	ISlide sld = pres.getSlides().get_Item(0);

	// Add chart with default data
	IChart chart = sld.getShapes().addChart(ChartType.ClusteredColumn, 0, 0, 500, 500);

	//Setting chart Title
	//chart.getChartTitle().TextFrameForOverriding.Text = "Sample Title";
	chart.getChartTitle().addTextFrameForOverriding("Sample Title");
	chart.getChartTitle().getTextFrameForOverriding().getTextFrameFormat().setCenterText(NullableBool.True);
	chart.getChartTitle().setHeight(20);
	chart.hasTitle(true);

	//Set first series to Show Values
	chart.getChartData().getSeries().get_Item(0).getLabels().getDefaultDataLabelFormat().setShowValue(true);

	//Setting the index of chart data sheet
	int defaultWorksheetIndex = 0;

	//Getting the chart data worksheet
	IChartDataWorkbook fact = chart.getChartData().getChartDataWorkbook();

	//Delete default generated series and categories
	chart.getChartData().getSeries().clear();
	chart.getChartData().getCategories().clear();
	int s = chart.getChartData().getSeries().size();
	s = chart.getChartData().getCategories().size();

	//Adding new series
	chart.getChartData().getSeries().add(fact.getCell(defaultWorksheetIndex, 0, 1, "Series 1"), chart.getType());
	chart.getChartData().getSeries().add(fact.getCell(defaultWorksheetIndex, 0, 2, "Series 2"), chart.getType());

	//Adding new categories
	chart.getChartData().getCategories().add(fact.getCell(defaultWorksheetIndex, 1, 0, "Caetegoty 1"));
	chart.getChartData().getCategories().add(fact.getCell(defaultWorksheetIndex, 2, 0, "Caetegoty 2"));
	chart.getChartData().getCategories().add(fact.getCell(defaultWorksheetIndex, 3, 0, "Caetegoty 3"));

	//Take first chart series
	IChartSeries series = chart.getChartData().getSeries().get_Item(0);

	//Now populating series data

	series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, 1, 1, 20));
	series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, 2, 1, 50));
	series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, 3, 1, 30));

	//Setting fill color for series
	series.getFormat().getFill().setFillType(FillType.Solid);
	series.getFormat().getFill().getSolidFillColor().setColor(java.awt.Color.RED);


	//Take second chart series
	series = chart.getChartData().getSeries().get_Item(1);

	//Now populating series data
	series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, 1, 2, 30));
	series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, 2, 2, 10));
	series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, 3, 2, 60));

	//Setting fill color for series
	series.getFormat().getFill().setFillType(FillType.Solid);
	series.getFormat().getFill().getSolidFillColor().setColor(java.awt.Color.GREEN);


	//create custom labels for each of categories for new series

	//first label will be show Category name
	IDataLabel lbl = series.getDataPoints().get_Item(0).getLabel();
	lbl.getDataLabelFormat().setShowCategoryName(true);

	lbl = series.getDataPoints().get_Item(1).getLabel();
	lbl.getDataLabelFormat().setShowSeriesName(true);

	//Show value for third label
	lbl = series.getDataPoints().get_Item(2).getLabel();
	lbl.getDataLabelFormat().setShowValue(true);
	lbl.getDataLabelFormat().setShowSeriesName(true);
	lbl.getDataLabelFormat().setSeparator("/");

	//Save presentation with chart
	pres.save("AsposeChart.pptx",SaveFormat.Pptx);

view raw Examples-src-main-java-com-aspose-slides-examples-Slides-Charts-CreateAChart-CreateAChart.java hosted with ❤ by GitHub

请查看以下简单代码片段，该片段使用旧版 Aspose.Slides API 从头创建散点图，并了解如何使用新合并 API 实现。

旧版 Aspose.Slides for Java 方法

	//Instantiate PresentationEx class that represents PPTX file
	PresentationEx pres = new PresentationEx("D:\\AsposeChart.pptx");

	//Access first slide
	SlideEx sld = pres.getSlides().get_Item(0);

	// Add chart with default data
	ChartEx chart = (ChartEx)sld.getShapes().get_Item(0);

	//Setting the index of chart data sheet
	int defaultWorksheetIndex = 0;

	//Getting the chart data worksheet
	ChartDataCellFactory fact = chart.getChartData().getChartDataCellFactory();

	//Take first chart series
	ChartSeriesEx series = chart.getChartData().getSeries().getItem(0);

	//Now updating series data
	fact.getCell(defaultWorksheetIndex, 0, 1, "New_Series1");//modifying series name
	series.getValues().get_Item(0).setValue(90);
	series.getValues().get_Item(1).setValue(123);
	series.getValues().get_Item(2).setValue(44);

	//Take Second chart series
	series = chart.getChartData().getSeries().getItem(1);

	//Now updating series data
	fact.getCell(defaultWorksheetIndex, 0, 2, "New_Series2");//modifying series name
	series.getValues().get_Item(0).setValue(23);
	series.getValues().get_Item(1).setValue(67);
	series.getValues().get_Item(2).setValue(99);


	//Now, Adding a new series
	chart.getChartData().getSeries().add(fact.getCell(defaultWorksheetIndex, 0, 3, "Series 3"), chart.getType());

	//Take 3rd chart series
	series = chart.getChartData().getSeries().getItem(2);

	//Now populating series data
	series.getValues().add(fact.getCell(defaultWorksheetIndex, 1, 3, 20));
	series.getValues().add(fact.getCell(defaultWorksheetIndex, 2, 3, 50));
	series.getValues().add(fact.getCell(defaultWorksheetIndex, 3, 3, 30));

	chart.setType(ChartTypeEx.ClusteredCylinder);

	// Save presentation with chart
	pres.write("D:\\AsposeChartMoodified.pptx");

view raw Examples-src-main-java-com-aspose-slides-examples-Slides-Charts-ExistingChart-ExistingChart.java hosted with ❤ by GitHub

新 Aspose.Slides for Java 14.x.x 方法

	Presentation pres = new Presentation();

	ISlide slide = pres.getSlides().get_Item(0);

	//Creating the default chart
	IChart chart = slide.getShapes().addChart(ChartType.ScatterWithSmoothLines, 0, 0, 400, 400);

	//Getting the default chart data worksheet index
	int defaultWorksheetIndex = 0;

	//Accessing the chart data worksheet
	IChartDataWorkbook fact = chart.getChartData().getChartDataWorkbook();

	//Delete demo series
	chart.getChartData().getSeries().clear();

	//Add new series
	chart.getChartData().getSeries().add(fact.getCell(defaultWorksheetIndex, 1, 1, "Series 1"), chart.getType());
	chart.getChartData().getSeries().add(fact.getCell(defaultWorksheetIndex, 1, 3, "Series 2"), chart.getType());

	//Take first chart series
	IChartSeries series = chart.getChartData().getSeries().get_Item(0);

	//Add new point (1:3) there.
	series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 2, 1, 1), fact.getCell(defaultWorksheetIndex, 2, 2, 3));

	//Add new point (2:10)
	series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 3, 1, 2), fact.getCell(defaultWorksheetIndex, 3, 2, 10));

	//Edit the type of series
	series.setType (ChartType.ScatterWithStraightLinesAndMarkers);

	//Changing the chart series marker
	series.getMarker().setSize(10);
	series.getMarker().setSymbol(MarkerStyleType.Star);

	//Take second chart series
	series = chart.getChartData().getSeries().get_Item(1);

	//Add new point (5:2) there.
	series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 2, 3, 5), fact.getCell(defaultWorksheetIndex, 2, 4, 2));

	//Add new point (3:1)
	series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 3, 3, 3), fact.getCell(defaultWorksheetIndex, 3, 4, 1));

	//Add new point (2:2)
	series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 4, 3, 2), fact.getCell(defaultWorksheetIndex, 4, 4, 2));

	//Add new point (5:1)
	series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 5, 3, 5), fact.getCell(defaultWorksheetIndex, 5, 4, 1));

	//Changing the chart series marker
	series.getMarker().setSize(10);
	series.getMarker().setSymbol (MarkerStyleType.Circle);

	pres.save("AsposeScatterChart.pptx",SaveFormat.Pptx);

view raw Examples-src-main-java-com-aspose-slides-examples-Slides-Charts-CreateScatterChart-CreateScatterChart.java hosted with ❤ by GitHub

如何在演示文稿中添加页眉和页脚 Aspose.Slides for Java 14.5.0 的公共 API 和不向后兼容的变化