jsp页面实现饼图

1.点击饼图其中模块，跳转到另一个页面

<%@page contentType="text/html;charset=gb2312" import="com.ay.view.plan.*,java.util.*,com.ay.util.*"   errorPage="../errorpage.jsp"%>
<%@taglib uri="PlanOrder"  prefix="plan" %>
<%@include file="../top.jsp"%>
<%@ page import="org.jfree.chart.ChartFactory, 
org.jfree.chart.JFreeChart, 
org.jfree.chart.plot.PlotOrientation, 
org.jfree.chart.servlet.ServletUtilities, 
org.jfree.data.category.*"%>
<%@ page import="org.jfree.data.general.DefaultPieDataset"%>
<%@ page import="org.jfree.chart.*"%>
<%@ page import="org.jfree.chart.plot.*"%>
<%@ page import="org.jfree.chart.servlet.ServletUtilities"%>
<%@ page import="org.jfree.chart.labels.StandardPieItemLabelGenerator"%> 
<%@ page import="org.jfree.chart.urls.StandardPieURLGenerator"%>
<%@ page import="org.jfree.chart.entity.StandardEntityCollection"%>
<%@ page import="java.io.*"%>


<%

	DBAccess db=new DBAccess();
	List list=  null;
%>







<%
	/**
	 * 饼图开始	**************************************
	 * JFreeChart
	 **/

String pie_sql= "";
pie_sql="select count1 AS rowcounts,wxytype as v from v_zh_jiuyuanzy";

	pie_sql = pie_sql ;

	Vector list_4_pie = new Vector();
	System.out.println("pie_sql:  "+pie_sql);
	list_4_pie = db.select(pie_sql);

	Vector list_pie_line = new Vector();

	JfreeChart tools=new JfreeChart();
	DefaultPieDataset data = new DefaultPieDataset(); 
	String loaction= "";
	for(int y = 0; y < list_4_pie.size(); y++){
		list_pie_line = (Vector)list_4_pie.elementAt(y);
		int newNum = Integer.parseInt(""+list_pie_line.get(0));
		data.setValue(loaction,newNum);
	}

	

	PiePlot3D plot = new PiePlot3D(data);
	JFreeChart chart = new JFreeChart("",JFreeChart.DEFAULT_TITLE_FONT, plot, true); 
	//设置图表显示文字
	plot.setLabelGenerator(new StandardPieItemLabelGenerator(StandardPieItemLabelGenerator.DEFAULT_TOOLTIP_FORMAT));
	//设置图例显示文字
	plot.setLegendLabelGenerator(new StandardPieItemLabelGenerator("{0}={1}({2})"));
	chart.setBackgroundPaint(new java.awt.Color(0xf3,0xfb,0xFe));//可选，设置图片背景色 F3FBFE
	//无数据时文字
	plot.setNoDataMessage("无统计数据!!!");
	//设置饼图透明度
	plot.setForegroundAlpha(0.6F);
	//设置背景透明度
	plot.setBackgroundAlpha(0);
	//图表字体，解决乱码
	plot.setLabelFont(new Font("宋体",Font.BOLD,13));
	//图例字体，解决乱码
	chart.getLegend().setItemFont(new Font("宋体",Font.BOLD,13));

	plot.setURLGenerator(new StandardPieURLGenerator("/safety/gov/common/zhuanhuan.jsp?wxytype=gov_jy_wz","yjzylx"));

	plot.setForegroundAlpha(0.5f);

	//plot.setToolTipGenerator(new StandardPieItemLabelGenerator()); 
	StandardEntityCollection sec = new StandardEntityCollection(); 
	ChartRenderingInfo info = new ChartRenderingInfo(sec); 
	PrintWriter w = new PrintWriter(out);//输出MAP信息 
	//500是图片长度，300是图片高度 
	String filename = ServletUtilities.saveChartAsPNG(chart, 710, 300, info, session); 
	ChartUtilities.writeImageMap(w, "map0", info, false); 

	String graphURL = request.getContextPath() + "/servlet/DisplayChart?filename=" + filename; 
	

%>


	应急资源全局统计

	

2.不跳转，静态的饼图

<%@page contentType="text/html;charset=gb2312" import="com.ay.view.plan.*,java.util.*,com.ay.util.*" errorPage="../errorpage.jsp"%>
<%@ page import="java.awt.Font"%>
<%@ page import="org.jfree.chart.ChartFactory"%>
<%@ page import="org.jfree.chart.JFreeChart"%>
<%@ page import="org.jfree.chart.labels.StandardPieSectionLabelGenerator"%>
<%@ page import="org.jfree.chart.plot.PiePlot3D"%>
<%@ page import="org.jfree.chart.servlet.ServletUtilities"%>
<%@ page import="org.jfree.data.general.DefaultPieDataset"%>
<%@ page import="org.jfree.util.Rotation"%>
<%@ page import="java.io.*"%>
<%@taglib uri="PlanOrder"  prefix="plan" %>
<%@taglib uri="Login"  prefix="login" %> 
  
<%@taglib uri="UITools"  prefix="uitools" %>
<%@include file="../top.jsp"%> 



<%
	String title=new String(request.getParameter("title").getBytes("iso8859-1"),"gb2312");
	String para=request.getParameter("para");
	String formname=request.getParameter("formname");
	DefaultPieDataset data = new DefaultPieDataset(); 
	DBAccess dba=new DBAccess();

	try{
		String sql2="select " + para +" as v,count(*) as sumcount from " + formname + " group by " + para;
		System.out.println("sql2======="+sql2);
		List list2= dba.queryToHashtable(sql2);
		if(list2!=null&&list2.size()>0){
			for(int i= 0; i