Java 使用 Apache POI 从 Excel 创建折线图并嵌入 Word 文档

import org.apache.poi.ss.util.CellRangeAddress; import org.apache.poi.xddf.usermodel.chart.; import org.apache.poi.xssf.usermodel.; import org.apache.poi.xwpf.usermodel.*;

import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException;

public class WordChartExample {

public static void main(String[] args) {
    try {
        // 读取Excel文件
        FileInputStream fileIn = new FileInputStream('巴新EDEVU水库数据处理表.xlsx');
        XSSFWorkbook workbook = new XSSFWorkbook(fileIn);
        XSSFSheet sheet1 = workbook.getSheet('P9');
        XSSFSheet sheet2 = workbook.getSheet('P10');

        // 创建折线图
        XSSFDrawing drawing = sheet2.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);

        // 创建数据系列
        XDDFCategoryAxis bottomAxis = chart.createCategoryAxis(AxisPosition.BOTTOM);
        XDDFValueAxis leftAxis = chart.createValueAxis(AxisPosition.LEFT);
        leftAxis.setCrosses(AxisCrosses.AUTO_ZERO);

        // 创建数据源
        XDDFNumericalDataSource<Double> xs1 = XDDFDataSourcesFactory.fromNumericCellRange(sheet1, new CellRangeAddress(11, 85, 0, 0));
        XDDFNumericalDataSource<Double> ys1 = XDDFDataSourcesFactory.fromNumericCellRange(sheet1, new CellRangeAddress(11, 85, 2, 2));
        XDDFNumericalDataSource<Double> xs2 = XDDFDataSourcesFactory.fromNumericCellRange(sheet2, new CellRangeAddress(11, 139, 0, 0));
        XDDFNumericalDataSource<Double> ys2 = XDDFDataSourcesFactory.fromNumericCellRange(sheet2, new CellRangeAddress(11, 139, 2, 2));

        // 添加数据系列
        XDDFLineChartData data = (XDDFLineChartData) chart.createData(ChartTypes.LINE, bottomAxis, leftAxis);
        XDDFLineChartData.Series series1 = (XDDFLineChartData.Series) data.addSeries(xs1, ys1);
        series1.setTitle('P9数据折线图', null);
        XDDFLineChartData.Series series2 = (XDDFLineChartData.Series) data.addSeries(xs2, ys2);
        series2.setTitle('P10数据折线图', null);

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

        // 创建Word文档
        XWPFDocument document = new XWPFDocument();

        // 创建段落
        XWPFParagraph paragraph = document.createParagraph();
        paragraph.setAlignment(ParagraphAlignment.CENTER);

        // 添加图表到段落
        XWPFRun run = paragraph.createRun();
        String fileName = '折线图.docx';

        // 将图表作为图片添加到段落中
        FileOutputStream fileOut = new FileOutputStream(fileName);
        run.addPicture(chart.getCTChart().getChartSpace().newInputStream(), Document.PICTURE_TYPE_PNG, '图表', chart.getWidth(), chart.getHeight());
        fileOut.close();

        System.out.println('折线图已创建并保存到Word文档中。');

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

}

// 解决办法内容：该错误是因为XSSFChart类没有write方法。要将图表添加到Word文档中，可以使用XWPFRun类的addPicture方法将图表作为图片添加到段落中。以下是修改后的代码示例：

import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xddf.usermodel.chart.*;
import org.apache.poi.xssf.usermodel.*;
import org.apache.poi.xwpf.usermodel.*;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class WordChartExample {

    public static void main(String[] args) {
        try {
            // 读取Excel文件
            FileInputStream fileIn = new FileInputStream('巴新EDEVU水库数据处理表.xlsx');
            XSSFWorkbook workbook = new XSSFWorkbook(fileIn);
            XSSFSheet sheet1 = workbook.getSheet('P9');
            XSSFSheet sheet2 = workbook.getSheet('P10');

            // 创建折线图
            XSSFDrawing drawing = sheet2.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);

            // 创建数据系列
            XDDFCategoryAxis bottomAxis = chart.createCategoryAxis(AxisPosition.BOTTOM);
            XDDFValueAxis leftAxis = chart.createValueAxis(AxisPosition.LEFT);
            leftAxis.setCrosses(AxisCrosses.AUTO_ZERO);

            // 创建数据源
            XDDFNumericalDataSource<Double> xs1 = XDDFDataSourcesFactory.fromNumericCellRange(sheet1, new CellRangeAddress(11, 85, 0, 0));
            XDDFNumericalDataSource<Double> ys1 = XDDFDataSourcesFactory.fromNumericCellRange(sheet1, new CellRangeAddress(11, 85, 2, 2));
            XDDFNumericalDataSource<Double> xs2 = XDDFDataSourcesFactory.fromNumericCellRange(sheet2, new CellRangeAddress(11, 139, 0, 0));
            XDDFNumericalDataSource<Double> ys2 = XDDFDataSourcesFactory.fromNumericCellRange(sheet2, new CellRangeAddress(11, 139, 2, 2));

            // 添加数据系列
            XDDFLineChartData data = (XDDFLineChartData) chart.createData(ChartTypes.LINE, bottomAxis, leftAxis);
            XDDFLineChartData.Series series1 = (XDDFLineChartData.Series) data.addSeries(xs1, ys1);
            series1.setTitle('P9数据折线图', null);
            XDDFLineChartData.Series series2 = (XDDFLineChartData.Series) data.addSeries(xs2, ys2);
            series2.setTitle('P10数据折线图', null);

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

            // 创建Word文档
            XWPFDocument document = new XWPFDocument();

            // 创建段落
            XWPFParagraph paragraph = document.createParagraph();
            paragraph.setAlignment(ParagraphAlignment.CENTER);

            // 添加图表到段落
            XWPFRun run = paragraph.createRun();
            String fileName = '折线图.docx';

            // 将图表作为图片添加到段落中
            FileOutputStream fileOut = new FileOutputStream(fileName);
            run.addPicture(chart.getCTChart().getChartSpace().newInputStream(), Document.PICTURE_TYPE_PNG, '图表', chart.getWidth(), chart.getHeight());
            fileOut.close();

            System.out.println('折线图已创建并保存到Word文档中。');

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