1 package  com.chart.demmo;
  2
 3 import  java.io.IOException;
  4
 5 import  javax.servlet.ServletRequest;
  6 import  javax.servlet.ServletResponse;
  7 import  javax.servlet.http.HttpServlet;
  8
 9 import  org.jfree.chart.ChartFactory;
 10 import  org.jfree.chart.ChartUtilities;
 11 import  org.jfree.chart.JFreeChart;
 12 import  org.jfree.data.general.DefaultPieDataset;
 13
14 /** */ /**
15 * @author 韩曦
16 *          email: [email protected]
17 *          blog:   http://www.blogjava.net/hill
18 * @date Jan 12, 20094:19:33 PM
19 */
20 public   class  ChartDemoServlet  extends  HttpServlet  {
21    
22    public void service(ServletRequest request,ServletResponse response)
23    {
24        response.setContentType("image/jpeg");
25        DefaultPieDataset data=getDataSet();
26        
27        JFreeChart chart=ChartFactory.createPieChart3D("水果产量图", data, true, false, false);
28        try {
29            ChartUtilities.writeChartAsJPEG(response.getOutputStream(), chart, 300, 400);
30            System.out.print("OK");
31        } catch (IOException e) {
32            // TODO Auto-generated catch block
33            e.printStackTrace();
34        }
35    }
36
37    /** *//**
38     * 获取一个演示用的简单数据集对象
39     * @return
40     */
41    private static DefaultPieDataset getDataSet() {
42        DefaultPieDataset dataset = new DefaultPieDataset();
43        dataset.setValue("苹果",100);
44        dataset.setValue("梨子",200);
45        dataset.setValue("葡萄",300);
46        dataset.setValue("香蕉",400);
47        dataset.setValue("荔枝",500);
48        return dataset;
49    }
50
51}
52


开心过好每一天。。。。。