authimg.java

反ajax原代码

// Decompiled by Jad v1.5.7g. Copyright 2000 Pavel Kouznetsov.
// Jad home page: http://www.geocities.com/SiliconValley/Bridge/8617/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi 
// Source File Name:   AuthImg.java

package com.laoer.bbscs.web.servlet;

import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.*;

// Referenced classes of package com.laoer.bbscs.web.servlet:
//            UserCheck

public class AuthImg extends HttpServlet
{

    private static final String CONTENT_TYPE = "text/html; charset=UTF-8";
    private Font mFont;

    public AuthImg()
    {
        mFont = new Font("Times New Roman", 0, 12);
    }

    public void init()
        throws ServletException
    {
    }

    public void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException
    {
        UserCheck uc = new UserCheck(request, response);
        uc.addAuthCode();
        String s = uc.getAuthCode();
        response.setContentType("image/jpeg");
        ServletOutputStream out = response.getOutputStream();
        BufferedImage image = new BufferedImage(35, 14, 1);
        Graphics gra = image.getGraphics();
        gra.setColor(Color.yellow);
        gra.fillRect(1, 1, 33, 12);
        gra.setColor(Color.black);
        gra.setFont(mFont);
        for(int i = 0; i < 4; i++)
        {
            char c = s.charAt(i);
            gra.drawString(String.valueOf(c), i * 7 + 4, 11);
        }

        JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
        encoder.encode(image);
        out.close();
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException
    {
        doGet(request, response);
    }

    public void destroy()
    {
    }
}