package Jfree;import javax.swing.JFrame;import javax.swing.JPanel;import org.jfree.chart.ChartPanel;import org.jfree.chart.JFreeChart;import org.jfree.chart.plot.SpiderWebPlot;import org.jfree.chart.title.LegendTitle;import org.jfree.chart.title.TextTitle;import org.jfree.data.category.DefaultCategoryDataset;import org.jfree.ui.RectangleEdge;public class MySpriderWebPlotTest { public static void main(String args[]) {? ? ? ? JFrame jf = new JFrame();? ? ? ? jf.add(erstelleSpinnenDiagramm());? ? ? ? jf.pack();? ? ? ? jf.setVisible(true);? ? }? ? public static JPanel erstelleSpinnenDiagramm() {? ? ? ? DefaultCategoryDataset dataset = new DefaultCategoryDataset();? ? ? ? String group1 = "apple ";? ? ? ??? ? ? ? dataset.addValue(5, group1, "w1");? ? ? ? dataset.addValue(6, group1, "w2");? ? ? ? dataset.addValue(4, group1, "w3");? ? ? ? dataset.addValue(2, group1, "w4");? ? ? ? dataset.addValue(5, group1, "w5");? ? ? ? dataset.addValue(5, group1, "w6");? ? ? ? dataset.addValue(5, group1, "w7");? ? ? ? dataset.addValue(8, group1, "w8");? ??? ? ? ? SpiderWebPlot spiderwebplot = new SpiderWebPlot(dataset);? ? ? ??? ? ? ? JFreeChart jfreechart = new JFreeChart("Test", TextTitle.DEFAULT_FONT,spiderwebplot, false);? ? ? ? LegendTitle legendtitle = new LegendTitle(spiderwebplot);? ? ? ? legendtitle.setPosition(RectangleEdge.BOTTOM);? ? ? ? jfreechart.addSubtitle(legendtitle);? ? ? ??? ? ? ? ChartPanel chartpanel = new ChartPanel(jfreechart);? ? ? ? return chartpanel;? ? }}怎樣變換代碼讓生成頁面在class里面，而讓圖片展示通過jsp的調用，顯示在瀏覽器頁面上