jfreechart

生成饼状图

 1 package com.kite.jfreechart;
 2 
 3 import java.awt.Font;
 4 import java.awt.Image;
 5 import java.io.File;
 6 import java.io.IOException;
 7 
 8 import javax.imageio.ImageIO;
 9 
10 import org.jfree.chart.ChartFactory;
11 import org.jfree.chart.ChartUtilities;
12 import org.jfree.chart.JFreeChart;
13 import org.jfree.chart.labels.StandardPieSectionLabelGenerator;
14 import org.jfree.chart.plot.PiePlot;
15 import org.jfree.chart.plot.Plot;
16 import org.jfree.data.general.DefaultPieDataset;
17 import org.junit.Test;
18 
19 /**
20  * 饼状图
21  */
22 public class App
23 {
24     
25     public static void main(String[] args) throws Exception
26     {
27         String title = "各大公司的J2EE AS市场占有率统计";
28         DefaultPieDataset ds = new DefaultPieDataset();
29         ds.setValue("IBM", 2000);
30         ds.setValue("ORACLE", 3000);
31         ds.setValue("JBOOS", 4000);
32         ds.setValue("用友", 5000);
33         
34         //创建jfreechart
35         JFreeChart chart = ChartFactory.createPieChart3D(title, ds, true, false, false);
36         
37         //处理中文问题 大标题
38         chart.getTitle().setFont(new Font("宋体", Font.BOLD, 25));
39         chart.getLegend().setItemFont(new Font("宋体", Font.PLAIN, 20));
40         
41         //绘图区
42         PiePlot plot = (PiePlot) chart.getPlot();
43         //设置绘图区中标签的字体
44         plot.setLabelFont(new Font("宋体", Font.BOLD, 18));
45         
46         //设置背景
47         //chart.setBackgroundImage(ImageIO.read(new File("D:\\系统文档\\Desktop\\model.png")));
48         //plot.setBackgroundImage(ImageIO.read(new File("D:\\系统文档\\Desktop\\model.png")));
49         //设置分裂效果     Explode 爆炸   percent 按照百分比
50         plot.setExplodePercent("IBM", 0.2f);
51         plot.setExplodePercent("用友", 0.1f);
52         
53         //设置前景色透明度
54         plot.setForegroundAlpha(0.5f);
55         //设置标签生成器
56         //{0}:公司名称
57         //{1}:销量
58         //{2}:百分比
59         //{3}:总量
60         //{4}:
61         plot.setLabelGenerator(new StandardPieSectionLabelGenerator("{0}({1}/{3}-{2})"));
62         //保存图片
63         ChartUtilities.saveChartAsJPEG(new File("f:\\pie.jpg"), chart, 800, 600);
64     }
65     
66 }

生成柱状图

 1 package com.kite.jfreechart;
 2 
 3 import java.awt.Font;
 4 import java.io.File;
 5 
 6 import org.jfree.chart.ChartFactory;
 7 import org.jfree.chart.ChartUtilities;
 8 import org.jfree.chart.JFreeChart;
 9 import org.jfree.chart.plot.CategoryPlot;
10 import org.jfree.chart.plot.Plot;
11 import org.jfree.chart.plot.PlotOrientation;
12 import org.jfree.data.category.DefaultCategoryDataset;
13 
14 /**
15  * 生成柱状图
16  */
17 public class AppBar
18 { 
19     public static void main(String[] args) throws Exception
20     {  
21         
22         DefaultCategoryDataset ds = new DefaultCategoryDataset();
23         
24         ds.setValue(2000, "IBM", "第一季度");
25         ds.setValue(3000, "Oracle", "第一季度");
26         ds.setValue(4000, "JBOOS", "第一季度");
27         ds.setValue(5000, "用友", "第一季度");
28         
29         ds.setValue(5000, "IBM", "第二季度");
30         ds.setValue(4000, "Oracle", "第二季度");
31         ds.setValue(3000, "JBOOS", "第二季度");
32         ds.setValue(2000, "用友", "第二季度");
33         
34         ds.setValue(1000, "IBM", "第三季度");
35         ds.setValue(2000, "Oracle", "第三季度");
36         ds.setValue(2500, "JBOOS", "第三季度");
37         ds.setValue(1500, "用友", "第三季度");
38         
39         String title = "前三季度各大公司j2ee as销量统计 ";
40         
41         JFreeChart chart = ChartFactory.createBarChart3D(title, "季度", "销量(单位:台)", ds, PlotOrientation.VERTICAL, true, true, false);
42         
43         //处理中文
44         chart.getTitle().setFont(new Font("宋体",Font.BOLD,25));
45         
46         //提示条
47         chart.getLegend().setItemFont(new Font("宋体",Font.PLAIN,20));
48         
49         CategoryPlot plot =  (CategoryPlot) chart.getPlot();
50         
51         //域轴字体
52         plot.getDomainAxis().setLabelFont(new Font("宋体",Font.PLAIN,18));
53         plot.getDomainAxis().setTickLabelFont(new Font("宋体",Font.PLAIN,15));//小标签字体
54         
55         //range
56         plot.getRangeAxis().setLabelFont(new Font("宋体",Font.PLAIN,18));
57         ChartUtilities.saveChartAsJPEG(new File("f:\\bar.jpg"), chart, 800, 600);
58         
59     }
60 }

显示折线图

 1 package com.kite.jfreechart;
 2 
 3 import java.awt.Font;
 4 import java.io.File;
 5 
 6 import org.jfree.chart.ChartFactory;
 7 import org.jfree.chart.ChartUtilities;
 8 import org.jfree.chart.JFreeChart;
 9 import org.jfree.chart.plot.CategoryPlot;
10 import org.jfree.chart.plot.Plot;
11 import org.jfree.chart.plot.PlotOrientation;
12 import org.jfree.data.category.DefaultCategoryDataset;
13 
14 /**
15  * 现状图
16  */
17 public class AppLine
18 { 
19     public static void main(String[] args) throws Exception
20     {  
21         DefaultCategoryDataset ds = new DefaultCategoryDataset();
22         ds.setValue(2000, "IBM", "第一季度");
23         ds.setValue(3000, "Oracle", "第一季度");
24         ds.setValue(4000, "JBOOS", "第一季度");
25         ds.setValue(5000, "用友", "第一季度");
26         
27         ds.setValue(5000, "IBM", "第二季度");
28         ds.setValue(4000, "Oracle", "第二季度");
29         ds.setValue(3000, "JBOOS", "第二季度");
30         ds.setValue(2000, "用友", "第二季度");
31         
32         ds.setValue(1000, "IBM", "第三季度");
33         ds.setValue(2000, "Oracle", "第三季度");
34         ds.setValue(2500, "JBOOS", "第三季度");
35         ds.setValue(1500, "用友", "第三季度");
36         
37         String title = "前三季度各大公司j2ee as销量统计 ";
38         
39         JFreeChart chart = ChartFactory.createLineChart(title, "季度", "销量(单位:台)", ds, PlotOrientation.VERTICAL, true, true, false);
40         
41         //处理中文
42         chart.getTitle().setFont(new Font("宋体",Font.BOLD,25));
43         
44         //提示条
45         chart.getLegend().setItemFont(new Font("宋体",Font.PLAIN,20));
46         
47         CategoryPlot plot =  (CategoryPlot) chart.getPlot();
48         
49         //域轴字体
50         plot.getDomainAxis().setLabelFont(new Font("宋体",Font.PLAIN,18));
51         plot.getDomainAxis().setTickLabelFont(new Font("宋体",Font.PLAIN,15));//小标签字体
52         
53         //range
54         plot.getRangeAxis().setLabelFont(new Font("宋体",Font.PLAIN,18));
55         ChartUtilities.saveChartAsJPEG(new File("f:\\line.jpg"), chart, 800, 600);
56         
57     }
58 }