问题
I need a sample code in Java, currently I am able to draw line and pie charts charts after reading values from sheet, and I also want to generate a StackedBar chart.
I added a snipplet of code for pie chart which I have attempted which is for .ppt format. I want the same in excel for stackedBar chart in java.
String[] categories = listCategories.toArray(new String[listCategories.size()]);
Double[] values = listValues.toArray(new Double[listValues.size()]);
final int numOfPoints = categories.length;
final String categoryDataRange = chart.formatRange(new CellRangeAddress(1, numOfPoints, 0, 0));
final String valuesDataRange = chart.formatRange(new CellRangeAddress(1, numOfPoints, 1, 1));
final XDDFDataSource<?> categoriesData = XDDFDataSourcesFactory.fromArray(categories, categoryDataRange);
final XDDFNumericalDataSource<? extends Number> valuesData = XDDFDataSourcesFactory.fromArray(values, valuesDataRange);
XDDFPieChartData.Series firstSeries = (XDDFPieChartData.Series) pie.getSeries().get(0);
firstSeries.replaceData(categoriesData, valuesData);
firstSeries.setTitle(chartTitle, chart.setSheetTitle(chartTitle, 0));
firstSeries.setExplosion(25);
chart.plot(pie);
来源：https://stackoverflow.com/questions/54901830/how-to-generate-stackedbar-chart-using-apache-poi-4-0-xddfchartdata-xddfbarchar