JSP/Java 產生柱狀圖、餅狀圖…等複雜的圖形 基於jfreechart

 最近在csdn上面，亂轉時看到很有用的東西，利用jfreechart來實現很多複雜圖形的效果，

轉載的網址：http://www.java2000.net/f30

 

下面是幾個簡單的例子：

<%@page language="java" pageEncoding="UTF-8"%><br /><%@page import="org.jfree.data.category.*,org.jfree.chart.*,org.jfree.chart.plot.*"%><br /><%<br /> out.clearBuffer();<br /> response.setContentType("image/jpeg");<br /> DefaultCategoryDataset dataset=new DefaultCategoryDataset();<br /> dataset.addValue(610,"taian","test1");<br /> dataset.addValue(540,"taian","test2");<br /> dataset.addValue(320,"taian","test3");<br /> dataset.addValue(370,"taian","test4");<br /> dataset.addValue(130,"taian","test5");<br /> JFreeChart chart=ChartFactory.createBarChart("BiangJi","xiaoliang","roulei",dataset,PlotOrientation.VERTICAL,false,false,false);<br /> java.io.OutputStream os=response.getOutputStream();<br /> javax.imageio.ImageIO.write(chart.createBufferedImage(500,300),"JPEG",os);<br /> os.flush();<br /> os.close();<br />%><br />

 

import org.jfree.chart.ChartFactory;<br />import org.jfree.chart.ChartFrame;<br />import org.jfree.chart.JFreeChart;<br />import org.jfree.data.general.DefaultPieDataset;<br />public class First {<br />public static void main(String[] args) {</p><p>DefaultPieDataset data=new DefaultPieDataset();<br />data.setValue("Catagory 1",43.2);<br />data.setValue("Catagory 2",27.9);<br />data.setValue("Catagory 3",79.5);<br />JFreeChart chart=ChartFactory.createPieChart("Sample Pie Chart",data,true,true,false);<br />ChartFrame frame=new ChartFrame("First",chart);<br />frame.pack();<br />frame.setVisible(true);<br />}<br />}<br />