使用Apache POI创建Excel图表

   <groupId>org.apache.poi</groupId>
   <artifactId>poi</artifactId>
   <version>5.2.1</version>
</dependency><dependency>
   <groupId>org.apache.poi</groupId>
   <artifactId>poi-ooxml</artifactId>
   <version>5.2.1</version>
</dependency>

implementation 'org.apache.poi:poi:5.2.1'
implementation 'org.apache.poi:poi-ooxml:5.2.1'

import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

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

public class ApachePOIExcelChart {
    public static void main(String[] args) {
        try (
                Workbook workbook = new XSSFWorkbook();
                FileOutputStream fileOut = new FileOutputStream("workbook.xlsx")
        ) {
            Sheet sheet = workbook.createSheet("Sheet1");

            Row row = sheet.createRow(0);
            Cell cell = row.createCell(0);
            cell.setCellValue("Category");
            cell = row.createCell(1);
            cell.setCellValue("Value");

            for (int i = 1; i < 10; i++) {
                row = sheet.createRow(i);
                cell = row.createCell(0);
                cell.setCellValue("Category " + i);
                cell = row.createCell(1);
                cell.setCellValue(i * 10);
            }

            workbook.write(fileOut);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

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

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

public class ApachePOIExcelChart {
    public static void main(String[] args) {
        try (
                Workbook workbook = new XSSFWorkbook();
                FileOutputStream fileOut = new FileOutputStream("workbook.xlsx")
        ) {
            Sheet sheet = workbook.createSheet("Sheet1");

            // 创建图表
            Drawing drawing = sheet.createDrawingPatriarch();
            ClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 0, 5, 10, 20);
            Chart chart = drawing.createChart(anchor);

            // 创建图表的标题
            ChartTitle title = chart.getOrCreateTitle();
            title.setText("Sample Chart");

            // 创建图表的数据源
            ChartDataSource<Number> categories = DataSources.fromNumericCellRange(sheet, new CellRangeAddress(0, 9, 0, 0));
            ChartDataSource<Number> values = DataSources.fromNumericCellRange(sheet, new CellRangeAddress(0, 9, 1, 1));

            // 创建图表的系列
            ChartSeries series = chart.createSeries();
            series.setName("Sample Series");
            series.setCategoryData(categories);
            series.setValues(values);

            // 设置图表的类型
            ChartAxis bottomAxis = chart.getOrCreateBottomAxis();
            ChartAxis leftAxis = chart.getOrCreateLeftAxis();
            ChartLegend legend = chart.getOrCreateLegend();
            legend.setPosition(LegendPosition.TOP_RIGHT);

            // 保存文件
            workbook.write(fileOut);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}