用JFreeChart实现蜘蛛图

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.SpiderWebPlot;
import org.jfree.data.category.DefaultCategoryDataset;
import javax.swing.JFrame;

public class SpiderChartExample {
    public static void main(String[] args) {
        // 创建数据集
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();
        dataset.addValue(5, "Series 1", "Category 1");
        dataset.addValue(4, "Series 1", "Category 2");
        dataset.addValue(3, "Series 1", "Category 3");
        dataset.addValue(2, "Series 1", "Category 4");
        dataset.addValue(1, "Series 1", "Category 5");

        // 创建蜘蛛图
        SpiderWebPlot plot = new SpiderWebPlot(dataset);
        plot.setStartAngle(90);
        plot.setInteriorGap(0.4);

        // 创建图表对象
        JFreeChart chart = new JFreeChart("Spider Chart", plot);

        // 创建图表面板
        ChartPanel chartPanel = new ChartPanel(chart);

        // 创建窗口并显示蜘蛛图
        JFrame frame = new JFrame("Spider Chart Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(chartPanel);
        frame.pack();
        frame.setVisible(true);
    }
}