1、利用 JFreeChart 创建按颜色分类的水果销售报表
1 package com.wcy.chart.bar;
2
3 import javax.servlet.http.HttpSession;
4
5 import org.jfree.chart.ChartFactory;
6 import org.jfree.chart.JFreeChart;
7 import org.jfree.chart.plot.PlotOrientation;
8 import org.jfree.chart.servlet.ServletUtilities;
9 import org.jfree.data.category.CategoryDataset;
10 import org.jfree.data.general.DatasetUtilities;
11
12 public class BarChart3 {
13
14 public static String genBarChart(HttpSession session)throws Exception{
15 double[][] data = new double[][]{{1320},{720},{830},{400}};
16 String[] rowKeys = {"苹果","香蕉","橘子","梨子"};
17 String[] columnKeys = {"深圳"};
18 CategoryDataset dataset = DatasetUtilities.createCategoryDataset(rowKeys, columnKeys,data);
19 JFreeChart chart = ChartFactory.createBarChart3D("水果销售统计图", "水果", "销售",
20 dataset, PlotOrientation.VERTICAL, true, true, true);
21 String fileName = ServletUtilities.saveChartAsPNG(chart, 700, 500, session);
22 return fileName;
23 }
24 }
1 <%@page import="com.wcy.chart.bar.BarChart3"%> 2 <%@ page language="java" contentType="text/html; charset=UTF-8" 3 pageEncoding="UTF-8"%> 4 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 5 <html> 6 <head> 7 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 8 <title>Insert title here</title> 9 </head> 10 <body> 11 <% 12 String fileName = BarChart3.genBarChart(session); 13 %> 14 <img src="DisplayChart?filename=<%=fileName %>" width="700" height="500"> 15 </body> 16 </html>
2、利用 JFreeChart 创建按颜色分类并且按地区分类水果销售报表
1 package com.wcy.chart.bar;
2
3 import javax.servlet.http.HttpSession;
4
5 import org.jfree.chart.ChartFactory;
6 import org.jfree.chart.JFreeChart;
7 import org.jfree.chart.plot.PlotOrientation;
8 import org.jfree.chart.servlet.ServletUtilities;
9 import org.jfree.data.category.CategoryDataset;
10 import org.jfree.data.general.DatasetUtilities;
11
12 public class BarChart4 {
13
14 public static String genBarChart(HttpSession session)throws Exception{
15 double[][] data = new double[][]{{1390,690,542,630},{529,650,1200,690},{780,450,1300,1120},{890,640,750,500}};
16 String[] rowKeys = {"苹果","香蕉","橘子","梨子"};
17 String[] columnKeys = {"上海","北京","贵州","广州"};
18 CategoryDataset dataset = DatasetUtilities.createCategoryDataset(rowKeys,columnKeys,data);
19 JFreeChart chart = ChartFactory.createBarChart3D("水果销售统计图", "水果", "销售", dataset, PlotOrientation.VERTICAL, true, true, true);
20 String fileName = ServletUtilities.saveChartAsPNG(chart, 700, 500, session);
21 return fileName;
22 }
23 }
1 <%@page import="com.wcy.chart.bar.BarChart4"%> 2 <%@ page language="java" contentType="text/html; charset=UTF-8" 3 pageEncoding="UTF-8"%> 4 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 5 <html> 6 <head> 7 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 8 <title>Insert title here</title> 9 </head> 10 <body> 11 <% 12 String fileName = BarChart4.genBarChart(session); 13 %> 14 <img src="DisplayChart?filename=<%=fileName %>" width="700" height="500" border="0"> 15 </body> 16 </html>
3、利用 JFreeChart 创建自定义 3D 柱状报表
1 package com.wcy.chart.bar;
2
3 import java.awt.Color;
4
5 import javax.servlet.http.HttpSession;
6
7 import org.jfree.chart.ChartFactory;
8 import org.jfree.chart.JFreeChart;
9 import org.jfree.chart.labels.ItemLabelAnchor;
10 import org.jfree.chart.labels.ItemLabelPosition;
11 import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
12 import org.jfree.chart.plot.CategoryPlot;
13 import org.jfree.chart.plot.PlotOrientation;
14 import org.jfree.chart.renderer.category.BarRenderer3D;
15 import org.jfree.chart.servlet.ServletUtilities;
16 import org.jfree.data.category.CategoryDataset;
17 import org.jfree.data.general.DatasetUtilities;
18 import org.jfree.ui.TextAnchor;
19
20 public class BarChart5 {
21
22 public static String genBarChart(HttpSession session)throws Exception{
23 double[][] data = new double[][]{{1299,459,980,470},{590,564,300,1130},{1200,357,910,380},{509,1300,650,810}};
24 String[] rowKeys = {"苹果","香蕉","橘子","梨子"};
25 String[] columnKeys = {"上海","北京","厦门","贵州"};
26 CategoryDataset dataset = DatasetUtilities.createCategoryDataset(rowKeys, columnKeys,data);
27 JFreeChart chart = ChartFactory.createBarChart3D("水果销售统计图", "水果", "销售", dataset, PlotOrientation.VERTICAL, true, true, true);
28
29 CategoryPlot plot = chart.getCategoryPlot();
30
31 // 设置网格背景颜色
32 plot.setBackgroundPaint(Color.WHITE);
33 // 设置网格竖线颜色
34 plot.setDomainGridlinePaint(Color.pink);
35 // 设置网格横线颜色
36 plot.setRangeGridlinePaint(Color.pink);
37
38 // 显示每个柱的数值，并修改该数值的字体属性
39 BarRenderer3D renderer=new BarRenderer3D();
40 renderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());
41 renderer.setBaseItemLabelsVisible(true);
42
43 renderer.setBasePositiveItemLabelPosition(new ItemLabelPosition(ItemLabelAnchor.OUTSIDE12, TextAnchor.BASELINE_LEFT));
44 renderer.setItemLabelAnchorOffset(10D);
45
46 // 设置平行柱的之间距离
47 renderer.setItemMargin(0.4);
48
49 plot.setRenderer(renderer);
50
51 String fileName = ServletUtilities.saveChartAsPNG(chart, 700, 500, session);
52 return fileName;
53 }
54 }
1 <%@page import="com.wcy.chart.bar.BarChart5"%> 2 <%@ page language="java" contentType="text/html; charset=UTF-8" 3 pageEncoding="UTF-8"%> 4 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 5 <html> 6 <head> 7 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 8 <title>Insert title here</title> 9 </head> 10 <body> 11 <% 12 String fileName = BarChart5.genBarChart(session); 13 %> 14 <img src="DisplayChart?filename=<%=fileName %>" width="700" height="500" border="0"> 15 </body> 16 </html>
声明：此程序代码本人只是用于学习总结，非原创，如有侵权，联系本人。
时间： 2024-07-29 03:50:44