b078b2de3186001c1081e06c574e7d11

网络抓包程序用java实现

import java.awt.*;
import java.awt.geom.*;
import java.awt.event.*;
public class Drawpicture extends Frame
{
	   public  void paint(Graphics g)
       {
		   int i=0;
    	   Graphics2D  g2=(Graphics2D)g;
    	   Font f1=new Font("包",Font.BOLD,15);   //设置字体为粗型                      
    	   Font f2=new Font("数",Font.BOLD,15);
    	   Font f3=new Font("/",Font.BOLD,15);
    	   Font f4=new Font("个",Font.BOLD,15);
    	   Font f5=new Font("时间/分",Font.BOLD,15);
    	   Line2D.Double Line1=new Line2D.Double(40.0,40.0,40.0,300.0);     //y直线
    	   Line2D.Double Line2=new Line2D.Double(40.0,300.0,400.0,300.0);   //x直线
    	   Line2D.Double Line3=new Line2D.Double(40.0,40.0,37.0,43.0);
    	   Line2D.Double Line4=new Line2D.Double(40.0,40.0,43.0,43.0);      //y轴的箭头
    	   Line2D.Double Line5=new Line2D.Double(397.0,297.0,400.0,300.0);
    	   Line2D.Double Line6=new Line2D.Double(397.0,303.0,400.0,300.0);  //y轴的箭头
    	   g2.setPaint(Color.BLACK );          //设置颜色
    	   g2.draw(Line1);
    	   g2.draw(Line2);
    	   g2.draw(Line3);
    	   g2.draw(Line4);
    	   g2.draw(Line5);
    	   g2.draw(Line6);
    	   g2.setFont(f1);
    	   g2.drawString("包", 20, 55);
    	   g2.setFont(f2);
    	   g2.drawString("数", 20, 70);
    	   g2.setFont(f3);
    	   g2.drawString(" /", 20, 85);
    	   g2.setFont(f4);
    	   g2.drawString("个", 20, 100);         //纵坐标单位
    	   g2.setFont(f5);
    	   g2.drawString("时间/分", 325,322);     //横坐标单位
    	   int j=295;
    	   do
    	   {    Font f6=new Font("TimesRoman",Font.BOLD,8);
    	        g2.setFont(f6);
    		   g2.drawString(Integer.toString((300-j)*100), 20, j);
    		  // Line2D.Double Line7=new Line2D.Double(40.0,j,390.0,j);
    	      g2.setPaint(Color.BLUE);
    	      //g2.draw(Line7);
    	      //g2.drawString(Integer.toString((300-j)*100), 30, j);
    	      j-=5;
    	   }while(j>=45);                       //画坐标的背景线颜色为蓝色
    	   while(i<catchbao.perpack_i)
    	   {   g2.setPaint(Color.BLACK);          //以下画数据包的流量变化图（矩阵）
    		   Rectangle2D.Double rec=new Rectangle2D.Double(40+i*7,300-catchbao.perpack[i],6,catchbao.perpack[i]);
    		   g2.draw(rec);
    		   g2.drawString(Integer.toString((i+1)*2), 40+i*7, 315);
    		   g2.setStroke(new BasicStroke(2));  //设置线宽
    		   i++;
    	   }
       }
	  public Drawpicture()                         //构造函数
		  {
		  this.addWindowListener
	        (
	            new WindowAdapter() {
	                public void windowClosing(WindowEvent e) {
	                	Drawpicture.this.windowClosed();
	                }
	            }
	        );  
		    this.setTitle("流量直观图");
			this.setVisible(true);                 //设置窗口可见
			this.pack();
			
		  }
	  protected void windowClosed() {
	        System.exit(0);
	    }
}