<chart>
<set label="Paper Cost" value="25" />
<set label="Binding" value="20" />
<set label="Printing Cost" value="20" />
<set label="Royality" value="15" />
<set label="Transportation Cost" value="10" />
<set label="Promotion Cost" value="10" />
</chart>

代码如下

package com.oracle.bingTu;

import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Polygon;
import java.awt.Shape;
import java.awt.geom.Rectangle2D;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartFrame;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.DefaultDrawingSupplier;
import org.jfree.chart.plot.DrawingSupplier;
import org.jfree.chart.plot.PiePlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.LineAndShapeRenderer;
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.data.general.DefaultPieDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;

public class Test {

	private static List<String> lable1 = new ArrayList<String>();
	private static List<Integer> value1 = new ArrayList<Integer>();

	/**
	 * 读XML文件
	 */
	public static void readXML() {
		SAXReader saxReader = new SAXReader();
		try {
			Document doc = saxReader.read(new File("321.xml"));
			Element element = doc.getRootElement();
			List list = element.elements();
			for (int i = 0; i < list.size(); i++) {
				Element elementz = (Element) list.get(i);
				List list1 = elementz.elements();
				if (elementz.getName().equals("set")) {
						lable1.add(elementz.attributeValue("label"));
						value1.add(Integer.parseInt(elementz
								.attributeValue("value")));
				}
			}
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		for(int i = 0 ;i<lable1.size();i++){
			System.out.println(lable1.get(i)+" "+value1.get(i));
		}
	}

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Test.readXML();
		DefaultPieDataset dpd = new DefaultPieDataset(); // 建立一个默认的饼图
		for(int i = 0 ;i<lable1.size();i++){
			dpd.setValue(lable1.get(i),value1.get(i));
		}

		JFreeChart chart = ChartFactory.createPieChart("某公司人员组织数据图",dpd,true,false);
		// 可以查具体的API文档,第一个参数是标题，第二个参数是一个数据集，第三个参数表示是否显示Legend，第四个参数表示是否显示提示，第五个参数表示图中是否存在URL
		
		Font titleFont = new Font("黑体",Font.BOLD,20);
		TextTitle textTitle = chart.getTitle();
		textTitle.setFont(titleFont);// 为标题设置上字体

		Font plotFont = new Font("宋体",Font.PLAIN,16);
		PiePlot plot = (PiePlot) chart.getPlot();
		plot.setLabelFont(plotFont); // 为饼图元素设置上字体

		Font LegendFont = new Font("楷体",18);
		LegendTitle legend = chart.getLegend(0);
		legend.setItemFont(LegendFont);// 为图例说明设置字体

		ChartFrame chartFrame = new ChartFrame("某公司人员组织数据图",chart);
		// chart要放在Java容器组件中，ChartFrame继承自java的Jframe类。该第一个参数的数据是放在窗口左上角的，不是正中间的标题。
		chartFrame.pack(); // 以合适的大小展现图形
		chartFrame.setVisible(true);// 图形是否可见
	}

}