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ÔÚWebRootĿ¼Ï½¨Á¢ÃûΪpieµÄ×ÓĿ¼£¬ÓÃÀ´´æ·Å±¾½Ì³ÌÖбýͼµÄʵÀýjspÒ³Ãæ¡£ÏÂÃæÈÃÎÒÃÇÀ´¿´Ò»¸ö¼òµ¥µÄÈýά±ýͼ¡£Ê×ÏÈÔÚpieĿ¼Ï½¨Á¢Ò»¸öÃûΪsample1.jspµÄÒ³Ãæ¡£
ÔÚJFreeChartÖУ¬Óë±ýͼ»æÖÆÃÜÇÐÏà¹ØµÄÀàÈçÏ£º
1£©  PiePlot
±ýͼ»æÖÆÀ࣬¿ÉÒÔÓÃÀ´ÉèÖñýͼµÄÏà¹ØÊôÐÔ¡£ÀýÈ磺
PiePlot pieplot = (PiePlot)jfreechart.getPlot();
pieplot.setLabelFont(new Font("SansSerif", 0, 12));
pieplot.setNoDataMessage("No data available");
pieplot.setCircular(false);
pieplot.setLabelGap(0.02D);
2£©  DefaultPieDataset
ĬÈϵıýͼÊý¾Ý¼¯À࣬ÓÃÀ´´æ´¢±ýͼÏÔʾµÄÏà¹ØÊý¾ÝÐÅÏ¢¡£ÀýÈ磺
DefaultPieDataset dataset = new DefaultPieDataset();
dataset.setValue("Æ·µÂ", new Double(0.2D));
dataset.setValue("ÌåÓý", new Double(0.2D));
dataset.setValue("ÒôÀÖ", new Double(0.2D));
dataset.setValue("ÆäÓà³É¼¨", new Double(0.4D));
3£©  ChartFactory
¿ÉÀûÓøÃÖÆÍ¼¹¤³§ÀàcreatePieChartÀ´´´½¨Ò»¸ö±ýͼµÄJFreeChart¶ÔÏó£¬ÀýÈ磺
JFreeChart jfreechart = ChartFactory.createPieChart("±ýͼʾÀý", dataset, true, true, false);
       ÏÂÃæÈÃÎÒÃÇ¿´Ò»¸ö¼òµ¥µÄÀý×Ó£¬ÐÞ¸Äsample1.jspµÄÄÚÈÝÈçÏ£º
<%@ page contentType="text/html;charset=GBK"%>
<%@ page import="org.jfree.chart.*,
org.jfree.chart.plot.PiePlot,
org.jfree.data.general.DefaultPieDataset,
org.jfree.chart.servlet.ServletUtilities,
java.awt.*"%>
<%
//ÉèÖÃÊý¾Ý¼¯
DefaultPieDataset dataset = new DefaultPieDataset();
dataset.setValue("³õÖи߼¶³ÌÐòÔ±", 0.55);
dataset.setValue("ÏîÄ¿¾­Àí", 0.1);
dataset.setValue("ϵͳ·ÖÎöʦ", 0.1);
dataset.setValue("Èí¼þ¼Ü¹¹Ê¦", 0.1);
dataset.setValue("ÆäËû", 0.2);
//ͨ¹ý¹¤³§ÀàÉú³ÉJFreeChart¶ÔÏó
JFreeChart chart = ChartFactory.createPieChart3D("ITÐÐÒµÖ°Òµ·Ö²¼Í¼", dataset, true, false, false);
PiePlot pieplot = (PiePlot) chart.getPlot();
pieplot.setLabelFont(new Font("ËÎÌå", 0, 12));
//ûÓÐÊý¾ÝµÄʱºòÏÔʾµÄÄÚÈÝ
pieplot.setNoDataMessage("ÎÞÊý¾ÝÏÔʾ");
pieplot.setCircular(false);
pieplot.setLabelGap(0.02D);
String filename = ServletUtilities.saveChartAsP


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int a=9;
int b=0;
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