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JFreeChat四种图表的绘制例程

1.平面饼图


Servlet代码:
package com.sitinspring.action;

import java.awt.Color;
import java.awt.Font;
import java.util.Hashtable;
import java.util.Map;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.servlet.ServletUtilities;
import org.jfree.chart.title.TextTitle;
import org.jfree.data.general.DefaultKeyedValuesDataset;

/**
 * 用于创建饼图的Servlet
 * 
 * @author sitinspring
 * 
 * @date 2008-2-12
 */
public class PieChartServlet extends HttpServlet {
    private static final long serialVersionUID = 56890894234786L;

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, java.io.IOException {
        request.setCharacterEncoding("UTF-8");

        Map<String,Integer> ht=new Hashtable<String,Integer>();
        ht.put("美国", 139800);
        ht.put("日本", 52900);
        ht.put("德国", 32800);
        ht.put("中国", 30100);
        ht.put("英国", 25700);
        ht.put("法国", 25200);
        ht.put("意大利", 20900);
        ht.put("西班牙", 14100);
        ht.put("加拿大", 13600);
        ht.put("俄罗斯", 11400);
        
        float sum=0;
        for(Integer i:ht.values()){
            sum+=i;
        }
        
        // 设定数据源
        DefaultKeyedValuesDataset piedata = new DefaultKeyedValuesDataset();

        // 向数据源中插值，第一个参数为名称，第二个参数是double数
        for(String nation:ht.keySet()){
            piedata.setValue(nation, ((float)ht.get(nation))/sum*100);
        }
        
        // 使用ChartFactory来创建JFreeChart
        JFreeChart chart = ChartFactory.createPieChart("2007世界总GDP排名", piedata, true,
                true, true);
        
        // 设定图片标题
        chart.setTitle(new TextTitle("2007世界总GDP排名", new Font("隶书", Font.ITALIC, 15)));

        // 设定背景
        chart.setBackgroundPaint(Color.white);
        
        // 创建文件并将图片地址传递到页面
        String filename = ServletUtilities.saveChartAsPNG(chart, 500, 300,
                null, request.getSession());
        String graphURL = request.getContextPath()
                + "/displayChart?filename=" + filename;
        request.setAttribute("graphURL", graphURL);
        
        // 标识
        request.setAttribute("msg", "饼图效果");

        // 页面转向
        RequestDispatcher dispatcher = request
                .getRequestDispatcher("/web/page/chart.jsp");
        dispatcher.forward(request, response);
        return;
    }

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, java.io.IOException {
        doPost(request, response);
    }
}

页面代码:
<%@ page contentType="text/html; charset=UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>JFreeChart图表效果</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<link rel="stylesheet" rev="stylesheet" href="web/css/style.css"
    type="text/css" />
</head>

<body>
    <div id="bodyDiv">
        <div id="header">
            <jsp:include page="/web/page/branch/header.jsp"/>
        </div>
        <div id="sidebar">
            <jsp:include page="/web/page/branch/sidebar.jsp"/>
        </div>
        <div id="content">
            <table border=0 align="center">
            <%                
                out.print("<tr>");
                String graphURL=(String)request.getAttribute("graphURL");            
                out.print("<td colspan=4 align=\"center\"><img src=\""+graphURL+"\"/></td>");
                out.print("</tr>");                
            %>
            </table>
        </div>
        <div id="footer">
            <jsp:include page="/web/page/branch/footer.jsp"/>
        </div>
    </div>
</body>
</html>

2.3d饼图


Servlet代码:
package com.sitinspring.action;

import java.awt.Color;
import java.awt.Font;
import java.util.Hashtable;
import java.util.Map;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.servlet.ServletUtilities;
import org.jfree.chart.title.TextTitle;
import org.jfree.data.general.DefaultKeyedValuesDataset;

/**
 * 用于创建3D饼图的Servlet
 * 
 * @author sitinspring
 * 
 * @date 2008-2-12
 */
public class Pie3DChartServlet extends HttpServlet {
    private static final long serialVersionUID = 56890894234786L;

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, java.io.IOException {
        request.setCharacterEncoding("UTF-8");

        Map<String,Integer> ht=new Hashtable<String,Integer>();
        ht.put("美国", 139800);
        ht.put("日本", 52900);
        ht.put("德国", 32800);
        ht.put("中国", 30100);
        ht.put("英国", 25700);
        ht.put("法国", 25200);
        ht.put("意大利", 20900);
        ht.put("西班牙", 14100);
        ht.put("加拿大", 13600);
        ht.put("俄罗斯", 11400);
        
        float sum=0;
        for(Integer i:ht.values()){
            sum+=i;
        }
        
        // 设定数据源
        DefaultKeyedValuesDataset piedata = new DefaultKeyedValuesDataset();

        // 向数据源中插值，第一个参数为名称，第二个参数是double数
        for(String nation:ht.keySet()){
            piedata.setValue(nation, ((float)ht.get(nation))/sum*100);
        }
        
        // 使用ChartFactory来创建JFreeChart
        JFreeChart chart = ChartFactory.createPieChart3D("2007世界总GDP排名", piedata, true,
                true, true);
        
        // 设定图片标题
        chart.setTitle(new TextTitle("2007世界总GDP排名", new Font("隶书", Font.ITALIC, 15)));

        // 设定背景
        chart.setBackgroundPaint(Color.white);
        
        // 创建文件并将图片地址传递到页面
        String filename = ServletUtilities.saveChartAsPNG(chart, 500, 300,
                null, request.getSession());
        String graphURL = request.getContextPath()
                + "/displayChart?filename=" + filename;
        request.setAttribute("graphURL", graphURL);
        
        // 标识
        request.setAttribute("msg", "3D饼图效果");

        // 页面转向
        RequestDispatcher dispatcher = request
                .getRequestDispatcher("/web/page/chart.jsp");
        dispatcher.forward(request, response);
        return;
    }

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, java.io.IOException {
        doPost(request, response);
    }
}

3.折线图


Servlet代码:
package com.sitinspring.action;

import java.util.LinkedHashMap;
import java.util.Map;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.servlet.ServletUtilities;
import org.jfree.data.time.Day;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.data.time.TimeSeriesDataItem;

/**
 * 用于创建折线图的Servlet
 * 
 * @author sitinspring
 * 
 * @date 2008-2-12
 */
public class CurveChartServlet extends HttpServlet {
    private static final long serialVersionUID = 56890894234786L;

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, java.io.IOException {
        request.setCharacterEncoding("UTF-8");

        // 曲线图标题
        String title = "趋势分析";
        // 曲线图X轴提示
        String domain = "年份";
        // 曲线图Y轴提示
        String range = "GDP";

        // 创建时间数据源，每一个TimeSeries在图上是一条曲线
        TimeSeries chinaTs = new TimeSeries("中国");
        Map<Integer, Integer> chinaht = new LinkedHashMap<Integer, Integer>();
        chinaht.put(2002, 22100);
        chinaht.put(2003, 14100);
        chinaht.put(2004, 27100);
        chinaht.put(2005, 38100);
        chinaht.put(2006, 29000);
        chinaht.put(2007, 90100);
        
        for (Integer i:chinaht.keySet()) {
            chinaTs.add(new TimeSeriesDataItem(new Day(1, 1, i),new Double(chinaht.get(i))));            
        }

        // 创建时间数据源，每一个TimeSeries在图上是一条曲线
        TimeSeries japanTs = new TimeSeries("日本");
        Map<Integer, Integer> japanht = new LinkedHashMap<Integer, Integer>();
        japanht.put(2000, 43900);
        japanht.put(2003, 63500);
        japanht.put(2004, 43400);
        japanht.put(2005, 63200);
        japanht.put(2006, 53100);
        japanht.put(2007, 32900);
        
        for (Integer i:japanht.keySet()) {
            japanTs.add(new TimeSeriesDataItem(new Day(1, 1, i),new Double(japanht.get(i))));            
        }

        // 创建时间数据源，每一个TimeSeries在图上是一条曲线
        TimeSeries usaTs = new TimeSeries("美国");
        Map<Integer, Integer> usaht = new LinkedHashMap<Integer, Integer>();
        usaht.put(2001, 100000);
        usaht.put(2003, 159800);
        usaht.put(2004, 109700);
        usaht.put(2005, 129600);
        usaht.put(2006, 9800);
        usaht.put(2007, 149800);
        
        for (Integer i:usaht.keySet()) {
            usaTs.add(new TimeSeriesDataItem(new Day(1, 1, i),new Double(usaht.get(i))));            
        }
        
        // 时间曲线数据集合
        TimeSeriesCollection dataset = new TimeSeriesCollection();
        dataset.addSeries(chinaTs);
        dataset.addSeries(japanTs);
        dataset.addSeries(usaTs);

        // 时间曲线元素
        JFreeChart chart = ChartFactory.createTimeSeriesChart(title, domain,
                range, dataset, true, true, false);

        // 创建文件并将图片地址传递到页面
        String filename = ServletUtilities.saveChartAsPNG(chart, 500, 300,
                null, request.getSession());
        String graphURL = request.getContextPath() + "/displayChart?filename="
                + filename;
        request.setAttribute("graphURL", graphURL);

        // 标识
        request.setAttribute("msg", "折线图效果");

        // 页面转向
        RequestDispatcher dispatcher = request
                .getRequestDispatcher("/web/page/chart.jsp");
        dispatcher.forward(request, response);
        return;
    }

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, java.io.IOException {
        doPost(request, response);
    }
}

4.柱图


Servlet代码:
package com.sitinspring.action;

import java.awt.Color;
import java.awt.Font;
import java.util.Hashtable;
import java.util.Map;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

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.chart.title.TextTitle;
import org.jfree.data.category.DefaultCategoryDataset;

/**
 * 用于创建柱图的Servlet
 * 
 * @author sitinspring
 * 
 * @date 2008-2-12
 */
public class ColumnChartServlet extends HttpServlet {
    private static final long serialVersionUID = 56890894234786L;

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, java.io.IOException {
        request.setCharacterEncoding("UTF-8");

        Map<String,Integer> ht=new Hashtable<String,Integer>();
        ht.put("美国", 139800);
        ht.put("日本", 52900);
        ht.put("德国", 32800);
        ht.put("中国", 30100);
        ht.put("英国", 25700);
        ht.put("法国", 25200);
        ht.put("意大利", 20900);
        ht.put("西班牙", 14100);
        ht.put("加拿大", 13600);
        ht.put("俄罗斯", 11400);
        
        float sum=0;
        for(Integer i:ht.values()){
            sum+=i;
        }
        
        // 设定数据源
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();

        // 向数据源中插值，第一个参数为名称，第二个参数是double数
        int i=0;
        for(String nation:ht.keySet()){
            i++;
            dataset.addValue((float)ht.get(nation), String.valueOf(i), nation);
        }
        
        // 使用ChartFactory来创建JFreeChart
        JFreeChart chart = ChartFactory.createBarChart3D("收支统计图", "国家",
                "数额", dataset, PlotOrientation.VERTICAL, false, false,
                false);
        
        // 设定图片标题
        chart.setTitle(new TextTitle("2007世界总GDP排名", new Font("隶书", Font.ITALIC, 15)));

        // 设定背景
        chart.setBackgroundPaint(Color.white);
        
        // 创建文件并将图片地址传递到页面
        String filename = ServletUtilities.saveChartAsPNG(chart, 500, 300,
                null, request.getSession());
        String graphURL = request.getContextPath()
                + "/displayChart?filename=" + filename;
        request.setAttribute("graphURL", graphURL);
        
        // 标识
        request.setAttribute("msg", "3D柱图效果");

        // 页面转向
        RequestDispatcher dispatcher = request
                .getRequestDispatcher("/web/page/chart.jsp");
        dispatcher.forward(request, response);
        return;
    }

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, java.io.IOException {
        doPost(request, response);
    }
}


例程下载(请在lib中加入jcommon-1.0.8.jar和jfreechart-1.0.6.jar):
http://www.blogjava.net/Files/sitinspring/JFreeChartSample20080408130142.rar

posted on 2008-04-08 13:00 sitinspring 阅读(3587) 评论(6)  编辑  收藏 所属分类: Web开发

评论

# re: JFreeChat四种图表的绘制例程 2008-05-30 13:46 we

不是时间曲线图如何制作？能不能些个例子谢谢！  回复  更多评论   

# re: JFreeChat四种图表的绘制例程 2010-08-09 13:43 zhangnian

我按你这样写，为什么图片不显示  回复  更多评论   

# re: JFreeChat四种图表的绘制例程 2010-08-09 13:44 zhangnian

可以把那个曲线图给我份完整的代码吗，谢谢！714378662@QQ.com  回复  更多评论   

# re: JFreeChat四种图表的绘制例程 2010-08-09 14:06 何杨

http://www.blogjava.net/Files/sitinspring/JFreeChartSample20080408130142.rar  回复  更多评论   

# re: JFreeChat四种图表的绘制例程[未登录] 2010-08-11 11:55 杨超

@zhangnian
在你的web.xml 里加上：  回复  更多评论   

# re: JFreeChat四种图表的绘制例程[未登录] 2010-08-11 11:55 杨超


<servlet>
<servlet-name>DisplayChart</servlet-name>
<servlet-class>
org.jfree.chart.servlet.DisplayChart
</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>DisplayChart</servlet-name>
<url-pattern>/displayChart</url-pattern>
</servlet-mapping>  回复  更多评论   


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