Apache POI Excel 折线图：使用 A2:A66 列作为水平轴，B2:B66 和 C2:C66 列作为垂直轴

import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.CellType; import org.apache.poi.ss.util.CellRangeAddress; import org.apache.poi.xddf.usermodel.chart.; import org.apache.poi.xssf.usermodel.;

import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Date;

public class ExcelChartExample04 {

public static void main(String[] args) {
    try {
        // 读取Excel文件
        FileInputStream fileIn = new FileInputStream("input.xlsx");
        XSSFWorkbook workbook = new XSSFWorkbook(fileIn);
        XSSFSheet sheet1 = workbook.getSheet("P1");

        // 创建折线图
        XSSFDrawing drawing = sheet1.createDrawingPatriarch();
        XSSFClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 3, 9, 9, 19);
        XSSFChart chart = drawing.createChart(anchor);
        chart.setTitleText("数据折线图");
        chart.setTitleOverlay(false);

        // 设置图例位置
        XDDFChartLegend legend = chart.getOrAddLegend();
        legend.setPosition(LegendPosition.BOTTOM);

        // 设置横坐标轴为日期坐标轴
        XDDFDataSource<?> categoryDataSource = XDDFDataSourcesFactory.fromNumericCellRange(sheet1, new CellRangeAddress(1, 66, 0, 0));

        // 设置纵坐标轴
        XDDFValueAxis leftAxis = chart.createValueAxis(AxisPosition.LEFT);
        leftAxis.setCrosses(AxisCrosses.AUTO_ZERO);
        leftAxis.setTitle("数据值");

        // 设置数据源
        XDDFNumericalDataSource<Double> xs1 = XDDFDataSourcesFactory.fromNumericCellRange(sheet1, new CellRangeAddress(1, 66, 0, 0));
        XDDFNumericalDataSource<Double> ys1 = XDDFDataSourcesFactory.fromNumericCellRange(sheet1, new CellRangeAddress(1, 66, 1, 1));
        XDDFNumericalDataSource<Double> ys2 = XDDFDataSourcesFactory.fromNumericCellRange(sheet1, new CellRangeAddress(1, 66, 2, 2));

        // 添加数据系列
        XDDFLineChartData data = (XDDFLineChartData) chart.createData(ChartTypes.LINE, categoryDataSource, leftAxis);
        XDDFLineChartData.Series series1 = (XDDFLineChartData.Series) data.addSeries(xs1, ys1);
        series1.setTitle("P1数据折线图", null);
        XDDFLineChartData.Series series2 = (XDDFLineChartData.Series) data.addSeries(xs1, ys2);
        series2.setTitle("P1数据折线图", null);

        // 绘制图表
        chart.plot(data);

        // 保存Excel文件
        FileOutputStream fileOut = new FileOutputStream("input.xlsx");
        workbook.write(fileOut);
        fileOut.close();

        System.out.println("折线图已创建并保存到Excel文件中。");

    } catch (IOException e) {
        e.printStackTrace();
    }
}

}