JFreeChart生成饼图，柱图并与Sturts2整合

首先要去官网下载所需要的jar包   http://www.jfree.org/jfreechart/

生成饼图:

package jFreeTest;    import java.awt.Font;    import org.jfree.chart.ChartFactory;  import org.jfree.chart.ChartFrame;  import org.jfree.chart.JFreeChart;  import org.jfree.chart.plot.PiePlot;  import org.jfree.chart.title.TextTitle;  import org.jfree.data.general.DefaultPieDataset;    public class Test1 {   /**    * @param args    */   public static void main(String[] args) {    //默认饼图数据集    DefaultPieDataset dpd=new DefaultPieDataset();        dpd.setValue("市场部",25);    dpd.setValue("IT部",50);    dpd.setValue("财务部",30);    dpd.setValue("其它部",25);        JFreeChart jfc=ChartFactory.createPieChart3D      ("某公司人员组织结构图",dpd,true,true,false);      Font font = new Font("黑体", 1, 20);            jfc.getTitle().setFont(font);            ((PiePlot)jfc.getPlot()).setLabelFont(font);          /*  PiePlot pieplot = (PiePlot)jfc.getPlot();      pieplot.setLabelFont(font);  */           jfc.getLegend().setItemFont(new Font("宋体",2,18));                                ChartFrame chartFrame=new ChartFrame("s司人员结构图s",jfc);                chartFrame.pack();       //chartFrame.setFont(font);        chartFrame.setVisible(true);         }    }

 

柱图

package jFreeTest;    import java.awt.Font;    import javax.swing.JPanel;        import org.jfree.chart.ChartFactory;  import org.jfree.chart.ChartPanel;  import org.jfree.chart.JFreeChart;  import org.jfree.chart.axis.CategoryAxis;  import org.jfree.chart.plot.CategoryPlot;  import org.jfree.chart.plot.PlotOrientation;  import org.jfree.chart.title.TextTitle;  import org.jfree.data.category.CategoryDataset;  import org.jfree.data.category.DefaultCategoryDataset;  import org.jfree.ui.ApplicationFrame;    public class Test2 extends ApplicationFrame {     //构造函数   public Test2(String title) {    super(title);        //将面版存放到 内容面版中    this.setContentPane(createJPanel());       }       //创建数据集category 分类   public static CategoryDataset createDataset(){    DefaultCategoryDataset category =new DefaultCategoryDataset();    category.setValue(20, "管理人员a", "管理人员");    category.setValue(30, "IT人员b", "IT人员");    category.setValue(50, "人事人员c", "人事人员");    category.setValue(20, "财务人员d", "财务人员");    return category;   }         //创建JFreeChart 图对象   public static JFreeChart createJFreeChart(CategoryDataset  category){       //构建JFreeChart 对象   JFreeChart jfreeChart=ChartFactory.createBarChart3D("hello", "人员分布","人员数量",      category, PlotOrientation.VERTICAL, true, true,false);       //对值重置   jfreeChart.setTitle(new TextTitle("某公司人员图",     new Font("黑体",Font.BOLD +Font.ITALIC, 20)));   //分类图   CategoryPlot plot=(CategoryPlot)jfreeChart.getPlot();         //领域轴   CategoryAxis axis=plot.getDomainAxis();   axis.setLabelFont(new Font("宋体",Font.PLAIN,18));   axis.setTickLabelFont(new Font("宋体",Font.PLAIN,15));      //设置Y坐轴   plot.getRangeAxis().setLabelFont(new Font("宋体",Font.BOLD,18));//设置y轴坐标上的标题的字体   //设置y轴坐标上的字体   plot.getRangeAxis().setTickLabelFont(new Font("宋体",Font.BOLD,15));   //lagend   jfreeChart.getLegend().setItemFont(new Font("宋体",Font.BOLD,12));         return jfreeChart;       }         /**    * 面版 存放jfree cahrt    * @param args    */   public static JPanel createJPanel(){    //创建JFreeChart    JFreeChart jfc=createJFreeChart(createDataset());        JPanel j= new ChartPanel(jfc);        return j;   }            public static void main(String[] args) {   //执行 生成类的实列    Test2 test2=new Test2("hello world...");    test2.pack();    test2.setVisible(true);      }    }

 

生成图片

:

package jFreeTest;    import java.awt.Font;  import java.io.FileOutputStream;  import java.io.OutputStream;    import org.jfree.chart.ChartFactory;  import org.jfree.chart.ChartFrame;  import org.jfree.chart.ChartUtilities;  import org.jfree.chart.JFreeChart;  import org.jfree.chart.plot.PiePlot;  import org.jfree.chart.title.TextTitle;  import org.jfree.data.general.DefaultPieDataset;    public class ImageTest3 {      //Dataset   public static DefaultPieDataset createPinDateset(){    DefaultPieDataset dpd=new DefaultPieDataset();    dpd.setValue("市场部",15);    dpd.setValue("IT部",20);    dpd.setValue("财务部",120);    dpd.setValue("其它部",125);    return dpd;       }     /**    * @param args    */   public static void main(String[] args) throws Exception   {    JFreeChart jfc=ChartFactory.createPieChart3D("公司部门统计图", createPinDateset(),       true, true, false);    //设置 标题字体    jfc.getTitle().setFont(new Font("微软雅黑",Font.BOLD,25));        //polt 图    PiePlot pp=(PiePlot) jfc.getPlot();    pp.setLabelFont(new Font("微软雅黑",Font.BOLD,15));        //图例字体    jfc.getLegend().setItemFont(new Font("微软雅黑",Font.BOLD,15));       /* ChartFrame cf=new ChartFrame("",jfc);    cf.pack();    cf.setVisible(true);*/        //输出图片    OutputStream os=new FileOutputStream("Company.jpg");    //图表 实用工具    ChartUtilities.writeChartAsJPEG(os, jfc, 1000, 800);        os.close();     }    }

和strtus2整合，在项目中应用:

页面代码：

<%@ page language="java" contentType="text/html"    pageEncoding="UTF-8"%>  <%@ taglib prefix="s" uri="/struts-tags" %>  <!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>  <h1>Chart Test</h1>  <s:form action="showTick.action"  method="post">  <s:checkbox name="interest" label="蓝球" fieldValue="nanqiu" labelposition="left"/>  <s:checkbox name="interest" label="足球" fieldValue="zhuqiu" labelposition="left"/>  <s:checkbox name="interest" label="羽毛球" fieldValue="ymq" labelposition="left"/>  <s:checkbox name="interest" label="游泳" fieldValue="youyong" labelposition="left"/>  <s:submit value="提交"/>  </s:form>  </body>  </html>

struts.xml文件:

<?xml version="1.0" encoding="UTF-8"?>  <!DOCTYPE struts PUBLIC   "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"   "http://struts.apache.org/dtds/struts-2.3.dtd">      <struts>   <package name="default"  extends="jfreechart-default, jasperreports-default">      <action name="showTick" class="strutsAction.ShowTick">   <result name="success"  type="chart">    <param name="width">800</param>       <param name="height">600</param>        </result>          </action>      <!-- jasperReport -->   <action name="showReport" class="strutsAction.ShowRepeort">   <result name="success" type="jasper">   <param name="location">test.jasper</param>   <param name="dataSource">list</param>   <param name="format">PDF</param>      </result>   </action>      </package>      </struts>

action实现类代码:

package strutsAction;    import java.awt.Font;  import java.util.List;  import java.util.Map;      import org.jfree.chart.ChartFactory;  import org.jfree.chart.JFreeChart;  import org.jfree.chart.axis.CategoryAxis;  import org.jfree.chart.axis.CategoryLabelPositions;  import org.jfree.chart.plot.CategoryPlot;  import org.jfree.chart.plot.PlotOrientation;  import org.jfree.chart.title.TextTitle;  import org.jfree.data.category.CategoryDataset;  import org.jfree.data.category.DefaultCategoryDataset;    import com.opensymphony.xwork2.ActionContext;  import com.opensymphony.xwork2.ActionSupport;    public class ShowTick extends ActionSupport {      //jfreecha   private JFreeChart chart;     public JFreeChart getChart() {       chart=ChartFactory.createBarChart("兴趣统计结果", "项目","结果",      this.createDatasetss(),      PlotOrientation.VERTICAL,       true,       true,      false);            if(null==chart){     throw new RuntimeException("chart怎么会是空呢，你大爷爷的---------");         }    //设置字体    chart.setTitle(new TextTitle("兴趣统计结果",new Font("宋体",Font.BOLD,20)));        //x    CategoryPlot cp=(CategoryPlot)chart.getPlot();    CategoryAxis axis=cp.getDomainAxis();    axis.setLabelFont(new Font("宋体",Font.BOLD,18));    axis.setTickLabelFont(new Font("宋体",Font.BOLD,15));        //设置文字倾多少度    axis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);        //y    cp.getRangeAxis().setLabelFont(new Font("宋体",Font.BOLD,18));    cp.getRangeAxis().setTickLabelFont(new Font("宋体",Font.BOLD,15));    //legend    chart.getLegend().setItemFont(new Font("宋体",Font.BOLD,20));        return chart;   }          private List<String> interest;      public List<String> getInterest() {    return interest;   }     public void setInterest(List<String> interest) {    this.interest = interest;   }     @Override   public String execute() throws Exception {        return SUCCESS;   }      ////计算投票 并入入aplication   public void interestResult(List<String> interests){    ActionContext ac=ActionContext.getContext();    Map mp=ac.getApplication();       for(String str:interests){        if(!mp.containsKey(str)){     mp.put(str, 1);    }else{     mp.put(str, (Integer)mp.get(str)+1);    }    }   }      //获取数据集   public CategoryDataset createDatasetss(){          DefaultCategoryDataset dcd=new DefaultCategoryDataset();   //计算投票   this.interestResult(this.getInterest());         //获取application   ActionContext ac=ActionContext.getContext();   Map map =ac.getApplication();      //设置值   //System.out.println("1:"+(Integer)map.get("nanqiu"));   dcd.setValue((Integer)map.get("nanqiu"), "蓝","蓝球");   dcd.setValue((Integer)map.get("zhuqiu"), "足","足球");   dcd.setValue((Integer)map.get("ymq"), "羽毛","羽毛球");   dcd.setValue((Integer)map.get("youyong"), "游泳","游泳");      /*dcd.setValue(5,"","蓝球");   dcd.setValue(6, "","足球");   dcd.setValue(34, "","羽毛球");   dcd.setValue(21, "","游泳");*/       return dcd;   }          }