如何更改由Apache Poi生成的图表以不使用平滑线并将空白单元格显示为间隙？

感谢Etienne提供了将空白设置为空白的代码。我从POI开发人员那里得到了帮助，这是解决原始问题中提到的两个问题的解决方案。

    XSSFChart chart = (XSSFChart)drawing.createChart(anchor);    // this will set blank values as gaps in the chart so you     // can accurately plot data series of different lengths    CTDispBlanksAs disp = CTDispBlanksAs.Factory.newInstance();    disp.setVal(STDispBlanksAs.GAP);    chart.getCTChart().setDispBlanksAs(disp);    // setup chart, axes, data series, etc    chart.plot(data, new ChartAxis[] { bottomAxis, leftAxis });    // this must occur after the call to chart.plot above    CTPlotArea plotArea = chart.getCTChart().getPlotArea();    for (CTLineChart ch : plotArea.getLineChartList()) {        for (CTLineSer ser : ch.getSerList()) { CTBoolean ctBool = CTBoolean.Factory.newInstance(); ctBool.setVal(false); ser.setSmooth(ctBool);        }    }