JAVA Verification code generation. Simplecaptcha

Go to the official website to download the jar package:

http://simplecaptcha.sourceforge.net/

Javadocs:

Http://simplecaptcha.sourceforge.net/javadocs/index.html

Write your own tool class:

/*
* To-Change the license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
Package com.sino.gxh.util;


Import Java.awt.Color;
Import Java.awt.Font;
Import java.util.ArrayList;
Import java.util.List;
Import Javax.servlet.http.HttpServletRequest;
Import Javax.servlet.http.HttpServletResponse;
Import Nl.captcha.Captcha;
Import Nl.captcha.gimpy.FishEyeGimpyRenderer;
Import Nl.captcha.gimpy.RippleGimpyRenderer;
Import Nl.captcha.noise.CurvedLineNoiseProducer;
Import Nl.captcha.servlet.CaptchaServletUtil;
Import Nl.captcha.text.producer.DefaultTextProducer;
Import Nl.captcha.text.renderer.ColoredEdgesWordRenderer;
Import Nl.captcha.text.renderer.WordRenderer;


/**
*
* @author Administrator
*/
public class Codemaker {


Verification Code Content
Private char[] Numberchar = new char[]{' A ', ' B ', ' C ', ' d ',
' E ', ' f ', ' g ', ' H ', ' J ', ' K ', ' m ', ' n ', ' P ', ' Q ', ' R ', ' s ', ' t ', ' u ', ' V ', ' w ', ' x ', ' y ', ' z ';
Number of verification codes
private int _codecount = 4;
Verification Code width
private int _width = 110;
Verification Code Height
private int _height = 50;
Verification Code Color
Private Color _codecolor = Color.Black;
Use font name
Private String _fontname = "System";
Use font type
private int _fonttype = Font.Bold;
Use font size
private int _fontsize = 40;
Interference Line Color
Private Color _noisecolor = Color.Black;
Interference line Size
private int _noisesize = 2;
Number of interfering lines
private int _noisecount = 1;
Whether the case is turned on when verifying the graphics code
Private Boolean whetheropenbigorsmall = false;


Verification Code Storage
Private String codememory;


Get Verification Code
public void GetCode (HttpServletResponse resp) {
Captcha.builder Captcha = new Captcha.builder (_width, _height);
list<font> fontlist = new arraylist<font> ();
list<color> colorlist = new arraylist<color> ();
Colorlist.add (_codecolor);
Fontlist.add (New Font (_fontname, _fonttype, _fontsize));
Wordrenderer dwr = new Colorededgeswordrenderer (colorlist, fontlist);
Captcha.addtext (New Defaulttextproducer (_codecount, Numberchar), DWR);
for (int i = 0; i < _noisecount; i++) {
Captcha.addnoise (New Curvedlinenoiseproducer (_noisecolor, _noisesize));
}
Captcha.gimp (new Fisheyegimpyrenderer (new color (0, 0, 0, 0), new color (0, 0, 0, 0));
Captcha.gimp (New Ripplegimpyrenderer ());
Captcha.build ();
Captcha CAPTCHAs = Captcha.build ();
Captchaservletutil.writeimage (RESP, captchas.getimage ());
Codememory = Captchas.getanswer ();
}


Compare Verification Codes
public boolean Comparecode (String Code) {
if (null = = Code | | "". Equals (Code)) {
return false;
} else {
Boolean BZ;
System.out.println (Whetheropenbigorsmall);
if (Whetheropenbigorsmall) {
BZ = Codememory.equals (Code);
} else {
BZ = Codememory.equalsignorecase (Code);
}
return BZ;
}
}


public Boolean Iswhetheropenbigorsmall () {
return whetheropenbigorsmall;
}


public void Setwhetheropenbigorsmall (Boolean whetheropenbigorsmall) {
This.whetheropenbigorsmall = Whetheropenbigorsmall;
}


Public char[] Getnumberchar () {
return Numberchar;
}


public void Setnumberchar (char[] numberchar) {
This.numberchar = Numberchar;
}


public int Getcodecount () {
return _codecount;
}


public void Setcodecount (int _codecount) {
This._codecount = _codecount;
}


public int getwidth () {
return _width;
}


public void setwidth (int _width) {
This._width = _width;
}


public int getheight () {
return _height;
}


public void setheight (int _height) {
This._height = _height;
}


Public Color Getcodecolor () {
return _codecolor;
}


public void Setcodecolor (Color _codecolor) {
This._codecolor = _codecolor;
}


Public String Getfontname () {
return _fontname;
}


public void Setfontname (String _fontname) {
This._fontname = _fontname;
}


public int Getfonttype () {
return _fonttype;
}


public void Setfonttype (int _fonttype) {
This._fonttype = _fonttype;
}


public int getfontsize () {
return _fontsize;
}


public void setfontsize (int _fontsize) {
This._fontsize = _fontsize;
}


Public Color Getnoisecolor () {
return _noisecolor;
}


public void Setnoisecolor (Color _noisecolor) {
This._noisecolor = _noisecolor;
}


public int getnoisesize () {
return _noisesize;
}


public void setnoisesize (int _noisesize) {
This._noisesize = _noisesize;
}


public int Getnoisecount () {
return _noisecount;
}


public void Setnoisecount (int _noisecount) {
This._noisecount = _noisecount;
}


}

Call and compare:

@RequestMapping (value = "/imagesanpeng", method = Requestmethod.get)
protected void Imagesanpeng (HttpServletRequest req, HttpServletResponse resp)
Throws Exception {
Codemaker C = new Codemaker ();
C.getcode (RESP);
Req.getsession (). SetAttribute ("code", c);
}


@RequestMapping (value = "/TXMBJ", method = Requestmethod.post)
protected void Txmbj (HttpServletRequest req, HttpServletResponse resp,
@RequestParam (value = "Txyzm", required = True) String Txyzm)
Throws Exception {
Codemaker C = (codemaker) req.getsession (). getattribute ("code");
C.setwhetheropenbigorsmall (TRUE);
Resp.getwriter (). Print (C.comparecode (TXYZM));
Resp.getwriter (). Flush ();
Resp.getwriter (). Close ();
Codemaker C = new Codemaker ();
C.setwhetheropenbigorsmall (TRUE);
Resp.getwriter (). Print (C.comparecode (req, resp, txyzm));
Resp.getwriter (). Flush ();
Resp.getwriter (). Close ();
}

JAVA Verification code generation. Simplecaptcha