random.jsp

将iso-8859-5 编码为gbk

  <%@   page   autoFlush="false"     import="java.awt.*,java.awt.image.*,com.sun.image.codec.jpeg.*,java.util.*"%>   
  <%@   page   import="org.apache.commons.lang.RandomStringUtils"%>   
  <%     
  RandomStringUtils   rs=new   RandomStringUtils();   
  String   random=rs.randomAlphanumeric(4);   
  session.setAttribute("random",random);   
    %>   
  <%   
    
                  out.clear();   
                  response.setContentType("image/jpeg");   
                  response.addHeader("pragma","NO-cache");   
                  response.addHeader("Cache-Control","no-cache");   
                  response.addDateHeader("Expries",0);   
                  int   width=100,   height=40;   
                  BufferedImage   image   =   new   BufferedImage(width,   height,   BufferedImage.TYPE_INT_RGB);   
                  Graphics   g   =   image.getGraphics();   
                  //以下填充背景?色   
                  g.setColor(Color.GRAY);   
                  Font   DeFont=new   Font("SansSerif",   Font.PLAIN,   32);     
                  g.setFont(DeFont);   
                  g.fillRect(0,   0,   width,   height);   
                //?置字体?色   
                  g.setColor(Color.RED);   
                  g.drawString(random,3,30);   
                  g.dispose();   
                  ServletOutputStream   outStream   =   response.getOutputStream();   
                  JPEGImageEncoder   encoder   =JPEGCodec.createJPEGEncoder(outStream);   
                  encoder.encode(image);   
                  outStream.close();   
        %>