JFreeChart的蜘蛛网图（又称雷达图，网状图）应该怎么写啊

给你一个我从上反编译过来的，是个雷达图，包加载对了你就能看到效果

package demo;

import java.awt.Dimension;

import javax.swing.JPanel;

import org.jfree.chart.ChartPanel;

import org.jfree.chart.JFreeChart;

import org.jfree.chart.labels.StandardCategoryToolTipGenerator;

import org.jfree.chart.plot.SpiderWebPlot;

import org.jfree.chart.title.LegendTitle;

import org.jfree.chart.title.TextTitle;

import org.jfree.data.category.CategoryDataset;

import org.jfree.data.category.DefaultCategoryDataset;

import org.jfree.ui.*;

public class SpiderWebChartDemo1 extends ApplicationFrame

{

public SpiderWebChartDemo1(String s)

{

super(s);

JPanel jpanel = createDemoPanel();

jpanel.setPreferredSize(new Dimension(500, 270));

setContentPane(jpanel);

}

private static CategoryDataset createDataset()

{

String s = "First";

String s1 = "Second";

String s2 = "Third";

String s3 = "Category 1";

String s4 = "Category 2";

String s5 = "Category 3";

String s6 = "Category 4";

String s7 = "Category 5";

DefaultCategoryDataset defaultcategorydataset = new DefaultCategoryDataset();

defaultcategorydataset.addValue(1.0D, s, s3);

defaultcategorydataset.addValue(4D, s, s4);

defaultcategorydataset.addValue(3D, s, s5);

defaultcategorydataset.addValue(5D, s, s6);

defaultcategorydataset.addValue(5D, s, s7);

defaultcategorydataset.addValue(5D, s1, s3);

defaultcategorydataset.addValue(7D, s1, s4);

defaultcategorydataset.addValue(6D, s1, s5);

defaultcategorydataset.addValue(8D, s1, s6);

defaultcategorydataset.addValue(4D, s1, s7);

defaultcategorydataset.addValue(4D, s2, s3);

defaultcategorydataset.addValue(3D, s2, s4);

defaultcategorydataset.addValue(2D, s2, s5);

defaultcategorydataset.addValue(3D, s2, s6);

defaultcategorydataset.addValue(6D, s2, s7);

return defaultcategorydataset;

}

private static JFreeChart createChart(CategoryDataset categorydataset)

{

SpiderWebPlot spiderwebplot = new SpiderWebPlot(categorydataset);

spiderwebplot.setStartAngle(54D);

spiderwebplot.setInteriorGap(0.40000000000000002D);

spiderwebplot.setToolTipGenerator(new StandardCategoryToolTipGenerator());

JFreeChart jfreechart = new JFreeChart("Spider Web Chart Demo 1", TextTitle.DEFAULT_FONT, spiderwebplot, false);

LegendTitle legendtitle = new LegendTitle(spiderwebplot);

legendtitle.setPosition(RectangleEdge.BOTTOM);

jfreechart.addSubtitle(legendtitle);

return jfreechart;

}

public static JPanel createDemoPanel()

{

JFreeChart jfreechart = createChart(createDataset());

return new ChartPanel(jfreechart);

}

public static void main(String args[])

{

SpiderWebChartDemo1 spiderwebchartdemo1 = new SpiderWebChartDemo1("SpiderWebChartDemo1");

spiderwebchartdemo1.pack();

RefineryUtilities.centerFrameOnScreen(spiderwebchartdemo1);

spiderwebchartdemo1.setVisible(true);

}

}