Java 报表之JFreeChart(第二讲)

时间：2023-03-09 07:54:18
Java 报表之JFreeChart(第二讲)

1、利用 JFreeChart 创建按颜色分类的水果销售报表

 package com.wcy.chart.bar;

 import javax.servlet.http.HttpSession;

 import org.jfree.chart.ChartFactory;

 import org.jfree.chart.JFreeChart;

 import org.jfree.chart.plot.PlotOrientation;

 import org.jfree.chart.servlet.ServletUtilities;

 import org.jfree.data.category.CategoryDataset;

 import org.jfree.data.general.DatasetUtilities;

 public class BarChart3 {

     public static String genBarChart(HttpSession session)throws Exception{

         double[][] data = new double[][]{{1320},{720},{830},{400}};

         String[] rowKeys = {"苹果","香蕉","橘子","梨子"};

         String[] columnKeys = {"深圳"};

         CategoryDataset dataset = DatasetUtilities.createCategoryDataset(rowKeys, columnKeys,data);

         JFreeChart chart = ChartFactory.createBarChart3D("水果销售统计图", "水果", "销售",

                 dataset, PlotOrientation.VERTICAL, true, true, true);

         String fileName = ServletUtilities.saveChartAsPNG(chart, 700, 500, session);

         return fileName;

     }

 }
 <%@page import="com.wcy.chart.bar.BarChart3"%>

 <%@ page language="java" contentType="text/html; charset=UTF-8"

     pageEncoding="UTF-8"%>

 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

 <html>

 <head>

 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

 <title>Insert title here</title>

 </head>

 <body>

 <%

     String fileName = BarChart3.genBarChart(session);

 %>

 <img alt="" src="DisplayChart?filename=<%=fileName %>" width="700" height="500">

 </body>

 </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

 package com.wcy.chart.bar;

 import javax.servlet.http.HttpSession;

 import org.jfree.chart.ChartFactory;

 import org.jfree.chart.JFreeChart;

 import org.jfree.chart.plot.PlotOrientation;

 import org.jfree.chart.servlet.ServletUtilities;

 import org.jfree.data.category.CategoryDataset;

 import org.jfree.data.general.DatasetUtilities;

 public class BarChart4 {

     public static String genBarChart(HttpSession session)throws Exception{

         double[][] data = new double[][]{{1390,690,542,630},{529,650,1200,690},{780,450,1300,1120},{890,640,750,500}};

         String[] rowKeys = {"苹果","香蕉","橘子","梨子"};

         String[] columnKeys = {"上海","北京","贵州","广州"};

         CategoryDataset dataset = DatasetUtilities.createCategoryDataset(rowKeys,columnKeys,data);

         JFreeChart chart = ChartFactory.createBarChart3D("水果销售统计图", "水果", "销售", dataset, PlotOrientation.VERTICAL, true, true, true);

         String fileName = ServletUtilities.saveChartAsPNG(chart, 700, 500, session);

         return fileName;

     }

 }
 <%@page import="com.wcy.chart.bar.BarChart4"%>

 <%@ page language="java" contentType="text/html; charset=UTF-8"

     pageEncoding="UTF-8"%>

 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

 <html>

 <head>

 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

 <title>Insert title here</title>

 </head>

 <body>

 <%

     String fileName = BarChart4.genBarChart(session);

 %>

 <img alt="" src="DisplayChart?filename=<%=fileName %>" width="700" height="500" border="0">

 </body>

 </html>

3、利用 JFreeChart 创建自定义 3D 柱状报表

 package com.wcy.chart.bar;

 import java.awt.Color;

 import javax.servlet.http.HttpSession;

 import org.jfree.chart.ChartFactory;

 import org.jfree.chart.JFreeChart;

 import org.jfree.chart.labels.ItemLabelAnchor;

 import org.jfree.chart.labels.ItemLabelPosition;

 import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;

 import org.jfree.chart.plot.CategoryPlot;

 import org.jfree.chart.plot.PlotOrientation;

 import org.jfree.chart.renderer.category.BarRenderer3D;

 import org.jfree.chart.servlet.ServletUtilities;

 import org.jfree.data.category.CategoryDataset;

 import org.jfree.data.general.DatasetUtilities;

 import org.jfree.ui.TextAnchor;

 public class BarChart5 {

     public static String genBarChart(HttpSession session)throws Exception{

         double[][] data = new double[][]{{1299,459,980,470},{590,564,300,1130},{1200,357,910,380},{509,1300,650,810}};

         String[] rowKeys = {"苹果","香蕉","橘子","梨子"};

         String[] columnKeys = {"上海","北京","厦门","贵州"};

         CategoryDataset dataset = DatasetUtilities.createCategoryDataset(rowKeys, columnKeys,data);

         JFreeChart chart = ChartFactory.createBarChart3D("水果销售统计图", "水果", "销售", dataset, PlotOrientation.VERTICAL, true, true, true);

         CategoryPlot plot = chart.getCategoryPlot();

         // 设置网格背景颜色

         plot.setBackgroundPaint(Color.WHITE);

         // 设置网格竖线颜色

         plot.setDomainGridlinePaint(Color.pink);

         // 设置网格横线颜色

         plot.setRangeGridlinePaint(Color.pink);

         // 显示每个柱的数值，并修改该数值的字体属性

         BarRenderer3D renderer=new BarRenderer3D();

         renderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());

         renderer.setBaseItemLabelsVisible(true);

         renderer.setBasePositiveItemLabelPosition(new ItemLabelPosition(ItemLabelAnchor.OUTSIDE12, TextAnchor.BASELINE_LEFT));

         renderer.setItemLabelAnchorOffset(10D);  

         // 设置平行柱的之间距离

         renderer.setItemMargin(0.4);

         plot.setRenderer(renderer);

         String fileName = ServletUtilities.saveChartAsPNG(chart, 700, 500, session);

         return fileName;

     }

 }
 <%@page import="com.wcy.chart.bar.BarChart5"%>

 <%@ page language="java" contentType="text/html; charset=UTF-8"

     pageEncoding="UTF-8"%>

 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

 <html>

 <head>

 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

 <title>Insert title here</title>

 </head>

 <body>

 <%

     String fileName = BarChart5.genBarChart(session);

 %>

 <img alt="" src="DisplayChart?filename=<%=fileName %>" width="700" height="500" border="0">

 </body>

 </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。

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