通过JFreeChart的饼状图显示XML

<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 blocke.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 stubTest.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,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URLFont 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", Font.PLAIN, 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}}