rondom_jsp.java

通过jsp,servlet,javaBean,三成架构实现的好友通讯录系统

package org.apache.jsp;

import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
import java.awt.*;
import java.awt.image.*;
import java.util.*;
import javax.imageio.*;

public final class rondom_jsp extends org.apache.jasper.runtime.HttpJspBase
    implements org.apache.jasper.runtime.JspSourceDependent {


//²úÉúËæ»úÑÕÉ«º¯ÊýgetRandColor
     Color getRandColor(int fc,int bc){
        Random r = new Random();
        if(fc>255) fc=255;
        if(bc>255) bc=255;
        int red=fc+r.nextInt(bc-fc);    //ºì
        int green=fc+r.nextInt(bc-fc);  //ÂÌ
        int blue=fc+r.nextInt(bc-fc);   //˦
        return new Color(red,green,blue);
     }

  private static java.util.Vector _jspx_dependants;

  public java.util.List getDependants() {
    return _jspx_dependants;
  }

  public void _jspService(HttpServletRequest request, HttpServletResponse response)
        throws java.io.IOException, ServletException {

    JspFactory _jspxFactory = null;
    PageContext pageContext = null;
    HttpSession session = null;
    ServletContext application = null;
    ServletConfig config = null;
    JspWriter out = null;
    Object page = this;
    JspWriter _jspx_out = null;
    PageContext _jspx_page_context = null;


    try {
      _jspxFactory = JspFactory.getDefaultFactory();
      response.setContentType("image/jpeg");
      pageContext = _jspxFactory.getPageContext(this, request, response,
      			null, true, 8192, true);
      _jspx_page_context = pageContext;
      application = pageContext.getServletContext();
      config = pageContext.getServletConfig();
      session = pageContext.getSession();
      out = pageContext.getOut();
      _jspx_out = out;

      out.write("\r\n\r\n\r\n\r\n");
      out.write("\r\n\r\n");

//ÉèÖÃÒ³Ãæ²»»º´æ
    response.setHeader("Pragma","No-cache");
    response.setHeader("Cache-Control","no-cache");
    response.setDateHeader("Expires", 0);

//´´½¨Ëæ»úÀà
    Random r = new Random();

// ÔÚÄÚ´æÖд´½¨Í¼Ïñ£¬¿í¶ÈΪwidth£¬¸ß¶ÈΪheight
    int width=60, height=20;
    BufferedImage pic = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

// »ñȡͼÐÎÉÏÏÂÎÄ»·¾³
    Graphics gc = pic.getGraphics();

// É趨±³¾°É«²¢½øÐÐÌî³ä
    gc.setColor(getRandColor(200,250));
    gc.fillRect(0, 0, width, height);

//É趨ͼÐÎÉÏÏÂÎÄ»·¾³×ÖÌå
    gc.setFont(new Font("Times New Roman",Font.PLAIN,18));

// Ëæ»ú²úÉú200Ìõ¸ÉÈÅÖ±Ïߣ¬Ê¹Í¼ÏñÖеÄÈÏÖ¤Âë²»Ò×±»ÆäËû·ÖÎö³ÌÐò̽²âµ½
    gc.setColor(getRandColor(160,200));
    for (int i=0;i<200;i++){
        int x1 = r.nextInt(width);
        int y1 = r.nextInt(height);
        int x2 = r.nextInt(15);
        int y2 = r.nextInt(15);
        gc.drawLine(x1,y1,x1+x2,y1+y2);
    }
//Ëæ»ú²úÉú100¸ö¸ÉÈŵ㣬ʹͼÏñÖеÄÑéÖ¤Âë²»Ò×±»ÆäËû·ÖÎö³ÌÐò̽²âµ½
	gc.setColor(getRandColor(120,240));
	for (int i=0;i<100;i++)
	{
	int x = r.nextInt(width);
	int y = r.nextInt(height);
	gc.drawOval(x,y,0,0);
	}

// Ëæ»ú²úÉú4λÊý×ÖµÄÑéÖ¤Âë
    String RS="";
    String rn="";
    for(int i=0;i<4;i++){
        //²úÉú10ÒÔÄÚËæ»úÊý×Örn
        rn=String.valueOf(r.nextInt(10));
        RS+=rn;
        //½«ÈÏÖ¤ÂëÓÃdrawStringº¯ÊýÏÔʾµ½Í¼ÏñÀï
        gc.setColor(new Color(20+r.nextInt(110),20+r.nextInt(110),20+r.nextInt(110)));
        gc.drawString(rn,13*i+6,16);
    }

// ÊÍ·ÅͼÐÎÉÏÏÂÎÄ»·¾³
    gc.dispose();

// ½«ÈÏÖ¤ÂëRS´æÈëSESSIONÖй²Ïí
    session.setAttribute("random",RS);

// Êä³öÉú³ÉºóµÄÑéÖ¤ÂëͼÏñµ½Ò³Ãæ
    try{
    ImageIO.write(pic, "JPEG", response.getOutputStream());
    } catch (Exception e) {}

      out.write("\r\n\r\n");
    } catch (Throwable t) {
      if (!(t instanceof SkipPageException)){
        out = _jspx_out;
        if (out != null && out.getBufferSize() != 0)
          out.clearBuffer();
        if (_jspx_page_context != null) _jspx_page_context.handlePageException(t);
      }
    } finally {
      if (_jspxFactory != null) _jspxFactory.releasePageContext(_jspx_page_context);
    }
  }
}