timeseriesdemo1.java

一个小的门户的实现。

package chart.demo;

/**
 * =============================================================
 * JFreeChart开发：利用JFreeChart开发实时曲线
 * =============================================================
 * Description:该例子演示了单条曲线的简单使用方法
 * Original Author:谢莫锋  QQ:35814522 EMAIL:[e-mail] created by 

2005-02-28
 *
 * Changes:
 * -------------------------------------------------------------
 * 2005-03-01 增加线程调用 by xmf
 * 2005-03-02 界面调整 by xmf
 * -------------------------------------------------------------
 */

//导入java2d包

import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;

//导入jfreechart包(chart)
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.plot.XYPlot;
//导入jfreechart包(data)
import org.jfree.data.time.*;
import org.jfree.data.xy.XYDataset;
//导入jfreechart包(ui)

import org.jfree.ui.RefineryUtilities;

public class TimeSeriesDemo1 extends JFrame implements Runnable,ActionListener{
  /**
	 * 
	 */
	private static final long serialVersionUID = 1L;
//时序图数据集
  private TimeSeries timeseries;
  //Value坐标轴初始值
  private double lastValue;
  static Class class$org$jfree$data$time$Millisecond;
  static Thread thread1;

  public static void main(String[] args){
    TimeSeriesDemo1 TimeSeriesDemo1 = new TimeSeriesDemo1();
    TimeSeriesDemo1.TimeSeriesDemo11();
    TimeSeriesDemo1.pack();
    RefineryUtilities.centerFrameOnScreen(TimeSeriesDemo1);
    TimeSeriesDemo1.setVisible(true);
    startThread();
  }

  public void run(){
    while(true){
      try{
    //根据实际需要在此处加入需要执行的代码
    double d = 0.9D + 0.2D * Math.random();
    lastValue = lastValue * d;
    Millisecond millisecond = new Millisecond();
    System.out.println("Now=" + millisecond.toString());
    timeseries.add(millisecond, lastValue);
    Thread.sleep(300);
      }catch(InterruptedException e){}
    }
  }

  public static void startThread(){
    thread1.start();
  }

  public void actionPerformed(ActionEvent e){
    if(e.getActionCommand().equals("EXIT")){
     // thread1.stop();
      System.exit(0);
    }
  }


  public void TimeSeriesDemo11(){
    //super(new BorderLayout());
    thread1 = new Thread(this);
    lastValue = 100D;
    //创建时序图对象
    timeseries = new TimeSeries("Random Data",TimeSeriesDemo1.class$org$jfree$data$time$Millisecond != null ? 

TimeSeriesDemo1.class$org$jfree$data$time$Millisecond : (TimeSeriesDemo1.class$org$jfree$data$time$Millisecond = 

TimeSeriesDemo1.getClass("org.jfree.data.time.Millisecond")));
    TimeSeriesCollection timeseriescollection = new TimeSeriesCollection(timeseries);
    //创建图表面板
    //JFreeChart chart=createChart(timeseriescollection);
    ChartPanel chartpanel = new ChartPanel(createChart(timeseriescollection));
    chartpanel.setPreferredSize(new Dimension(500,270));

    JPanel jpanel = new JPanel();
    jpanel.setBorder(BorderFactory.createEmptyBorder(4,4,4,4));//边距为4
    JButton jbutton = new JButton("退出");
    jbutton.setActionCommand("EXIT");
    jbutton.addActionListener(this);
    jpanel.add(jbutton);

    getContentPane().add(chartpanel);
    getContentPane().add(jpanel,"South");
  }

  private JFreeChart createChart(XYDataset xydataset){
    JFreeChart jfreechart = ChartFactory.createTimeSeriesChart("时序图例子","时间","温度值",xydataset,true,true,false);
    XYPlot xyplot = jfreechart.getXYPlot();
    //纵坐标设定
    ValueAxis valueaxis = xyplot.getDomainAxis();
    valueaxis.setAutoRange(true);
    valueaxis.setFixedAutoRange(60000D);

    valueaxis = xyplot.getRangeAxis();
    valueaxis.setRange(0.0D,200D);

    return jfreechart;
  }

  static Class getClass(String s){
    Class cls = null;
    try{
      cls = Class.forName(s);
    }catch(ClassNotFoundException cnfe){
      throw new NoClassDefFoundError(cnfe.getMessage());
    }
    return cls;
  }
  
  public JFreeChart crchart() {
	  thread1 = new Thread(this);
	    lastValue = 100D;
	    //创建时序图对象
	    timeseries = new TimeSeries("Random Data",TimeSeriesDemo1.class$org$jfree$data$time$Millisecond != null ? 

	TimeSeriesDemo1.class$org$jfree$data$time$Millisecond : (TimeSeriesDemo1.class$org$jfree$data$time$Millisecond = 

	TimeSeriesDemo1.getClass("org.jfree.data.time.Millisecond")));
	    TimeSeriesCollection timeseriescollection = new TimeSeriesCollection(timeseries);
	    //创建图表
	    JFreeChart chart=createChart(timeseriescollection);
	  return chart;
  }

}