java - Java 如何否生成 Excel 气泡图？

Question

Java 如何否生成 Excel 气泡图？

rt

Answer 1

在 Java 中生成 Excel 气泡图需要使用第三方库，比如 Apache POI 和 JFreeChart。下面是一个简单的示例代码，演示如何使用这些库生成 Excel 气泡图：

import org.apache.poi.ss.usermodel.*;import org.apache.poi.xssf.usermodel.*;import org.jfree.chart.*;import org.jfree.chart.plot.*;import org.jfree.data.xy.*;import java.io.FileOutputStream;import java.io.IOException;import java.util.ArrayList;import java.util.List;public class ExcelBubbleChartGenerator {    public static void main(String[] args) throws IOException {        // 创建 Excel 工作簿和工作表        XSSFWorkbook workbook = new XSSFWorkbook();        XSSFSheet sheet = workbook.createSheet("Bubble Chart");        // 创建数据集        List<BubbleData> data = new ArrayList<>();        data.add(new BubbleData(1, 2, 3));        data.add(new BubbleData(4, 5, 6));        data.add(new BubbleData(7, 8, 9));        // 设置图表区域        int rowCount = 0;        int columnCount = 0;        for (BubbleData point : data) {            Row row = sheet.createRow(rowCount++);            row.createCell(columnCount++).setCellValue(point.getX());            row.createCell(columnCount++).setCellValue(point.getY());            row.createCell(columnCount++).setCellValue(point.getBubbleSize());        }        // 创建图表对象        XYDataset dataset = new DefaultXYDataset(data);        JFreeChart chart = ChartFactory.createBubbleChart("Bubble Chart", "X", "Y", dataset);        XYPlot plot = chart.getXYPlot();        plot.setSeriesRenderingOrder(SeriesRenderingOrder.REVERSE);        plot.setSeriesPaint(0, Color.BLUE);        plot.setSeriesPaint(1, Color.RED);        plot.setSeriesPaint(2, Color.GREEN);        plot.setSeriesStroke(0, new BasicStroke(2));        plot.setSeriesStroke(1, new BasicStroke(2));        plot.setSeriesStroke(2, new BasicStroke(2));        plot.setBackgroundPaint(Color.WHITE);        plot.setAxisShadowsVisible(true);        plot.setRangeGridlinePaint(Color.BLACK);        plot.setDomainGridlinePaint(Color.BLACK);        plot.setAnnotationsVisible(true);        plot.setAutoScale(true);        plot.setAxisOffset(new SpatialOffset());        plot.setOrientation(PlotOrientation.VERTICAL);        plot.setRangeCrosshairVisible(true);        plot.setDomainCrosshairVisible(true);        plot.setDatasetRenderingOrder(DatasetRenderingOrder.FORWARD);        plot.setSeriesFilled(true);        plot.setBubbleRadius(0.08);        plot.setBubbleMaxSize(100);        plot.setBubbleMinSize(10);        plot.setBubbleGradientFactor(0.5);        plot.setPadding(new RectangleInsets(5, 5, 5, 5));        plot.setBackgroundImage(null);        chart.removeLegend(); // remove legend to make room for bubble sizes and labels        // 将图表输出到 Excel 工作表上并保存文件