random.jsp

来自「校友录管理系统。校友进行注册」· JSP 代码 · 共 38 行

JSP
38
字号
<%@page  import="java.io.*,java.util.*,com.sun.image.codec.jpeg.*,java.awt.*,java.awt.image.*"%>
<html><head></head><body>
<table width="80" >
<tr><td>
<%
  response.setContentType("image/jpeg");
  ServletOutputStream o = response.getOutputStream();
  BufferedImage image = new BufferedImage(80, 40, BufferedImage.TYPE_INT_RGB);
  int[] rand = new int[4];
  for (int i = 0; i < 4; i++) {
    Random r = new Random();
    rand[i] = r.nextInt(10) ;
  }
    Graphics g = image.getGraphics();
    g.fillRect(0,0,80,30);
    Font f=new  Font("Arial Black",Font.BOLD,20);
    g.setFont(f);
    for (int i = 0; i < 4; i++) {
      if(i==0)
      g.setColor(Color.cyan);
      else if(i==1)
      g.setColor(Color.red);
      else if(i==2)
      g.setColor(Color.yellow);
      else
      g.setColor(Color.pink);
      g.drawString(new Integer(rand[i]).toString(), i * 20, 40);
    }
     JPEGImageEncoder encoder=JPEGCodec.createJPEGEncoder(o);
     encoder.encode(image);
     o.close();

%>
</td></tr>
</table>
</body>
</html>

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