Java Implementation Verification code function--turn from the eyes

Tag:inline   font   oid    copy    new    puts   rip    width height    draw   

Package Com.verification_code.servlet;import Java.awt.color;import Java.awt.font;import java.awt.Graphics;import Java.awt.image.bufferedimage;import Java.io.ioexception;import Java.io.outputstream;import java.util.Random; Import Javax.imageio.imageio;import Javax.servlet.servletexception;import Javax.servlet.http.httpservlet;import Javax.servlet.http.httpservletrequest;import Javax.servlet.http.httpservletresponse;public class ImgServlet Extends httpservlet{@Override protected void doget (HttpServletRequest req, HttpServletResponse resp) thr    oWS servletexception, IOException {//TODO auto-generated Method Stub doPost (REQ,RESP); } @Override protected void DoPost (HttpServletRequest req, HttpServletResponse resp) throws Servletexcepti On, IOException {//TODO auto-generated Method Stub//Set the response at the beginning Resp.setcontenttype ("Image/jpeg        ");        The settings page does not cache Resp.setheader ("Pragma", "no-cache"); Resp.setheader("Cache-control", "No-cache");        Resp.setdateheader ("Expires", 0);        OutputStream out = Resp.getoutputstream ();        Sets the width height int width=88,height=20 of the picture;        BufferedImage image = new BufferedImage (WIDTH,HEIGHT,BUFFEREDIMAGE.TYPE_INT_RGB);        Graphics g = image.getgraphics ();        Generate Random class randomly random = new random ();        G.setcolor (Color.White);        G.fillrect (0, 0, width, height);        Set the font g.setfont (new Font ("Times New Roman", font.bold+font.italic,18)); Draw Border G.setcolor (Getrandcolor (0, 20));        ---2 g.drawrect (0, 0, width-1, height-1);        Randomly generates an interference line int count = 100; int linewidth = 3; Width of the interference line for (int i = 0; i < count; i++) {G.setcolor (Getrandcolor);//---3 in T x = Random.nextint (width-linewidth-1) + 1;            Make sure to draw within the bounding rectangle int y = random.nextint (height-linewidth-1) + 1;            int xl = Random.nextint (linewidth); int YL = Random.nextint (linewidth);        G.drawline (x, y, X + xl, y + yl);        }//Generate random verification code String srand= ""; String str[]={"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M",        "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"};            for (int i=0;i<4;i++) {int rand = Random.nextint (36);            Srand+=str[rand];            Set the random color G.setcolor (new color (20+random.nextint, 20+random.nextint, 20+random.nextint (110)));        Draw g.DrawString (Str[rand], 20*i+8, 16);        } req.getsession (). SetAttribute ("Verification_code", SRand);        G.dispose ();    Imageio.write (Image, "JPEG", out);        } public color Getrandcolor (int fc, int BC) {//Get a random color for a given range randomly random = new random ();        if (FC > 255) {fc = 255;        } if (BC > 255) {BC = 255;        } int r = FC + Random.nextint (BC-FC);int g = FC + Random.nextint (BC-FC);        int B = FC + Random.nextint (BC-FC);    return new Color (R, G, b); }}

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<script type= "Text/javascript" >    function Refresh () {        document.getElementById ("Id_code"). src= " Image? " +math.random ();        loginform.code.src= "image?" +math.random ();    }
</script>

Java Implementation Verification code function--turn from the eyes