package ;
import ;
import ;
import .Graphics2D;
import ;
import ;
import ;
import ;
import ;
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/**
* Verification code generator
*/
public class ValidateCode {
// The width of the picture.
private int width = 160;
// The height of the picture.
private int height = 40;
// Number of verification code characters
private int codeCount = 5;
// Number of interference lines of verification code
private int lineCount = 150;
// Verification code
private static String code = null;
// Verification code picture Buffer
private BufferedImage buffImg=null;
private char[] codeSequence = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J','K', 'L',
'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W','X', 'Y',
'Z', '1', '2', '3', '4', '5', '6', '7', '8', '9' };
public ValidateCode() {
this.createCode();
}
/**
*
* @paramwidth picture width
* @paramheight picture high
*/
public ValidateCode(int width,int height) {
this.width=width;
this.height=height;
this.createCode();
}
/**
*
* @paramwidth picture width
* @paramheight picture high
* @paramcodeCount number of characters
* @paramlineCount Number of interfering lines
*/
public ValidateCode(int width,int height,int codeCount,int lineCount) {
this.width=width;
this.height=height;
this.codeCount=codeCount;
this.lineCount=lineCount;
this.createCode();
}
public void createCode() {
int x = 0,fontHeight=0,codeY=0;
int red = 0, green = 0, blue = 0;
x = width / (codeCount +2);//Width of each character
fontHeight = height - 2;//The height of the font
codeY = height - 4;
// Image buffer
buffImg = new BufferedImage(width, height,BufferedImage.TYPE_INT_RGB);
Graphics2D g = ();
// Generate random numbers
Random random = new Random();
// Fill the image into white
();
(0, 0, width, height);
// Create fonts
ImgFontByte imgFont=new ImgFontByte();
Font font =(fontHeight);
(font);
for (int i = 0; i < lineCount; i++) {
int xs = (width);
int ys = (height);
int xe = xs+(width/8);
int ye = ys+(height/8);
red = (255);
green = (255);
blue = (255);
(new Color(red, green, blue));
(xs, ys, xe, ye);
}
// randomCode records randomly generated verification code
StringBuffer randomCode = new StringBuffer();
// Randomly generate a codeCount character verification code.
for (int i = 0; i < codeCount; i++) {
String strRand = (codeSequence[()]);
// Generate random color values so that the color values of each character output will be different.
red = (255);
green = (255);
blue = (255);
(new Color(red, green, blue));
(strRand, (i + 1) * x, codeY);
// Combine the generated four random numbers together.
(strRand);
}
// Save the four-digit verification code to the Session.
code = ();
}
public void write(String path) throws IOException {
OutputStream sos = new FileOutputStream(path);
this.write(sos);
}
public void write(OutputStream sos) throws IOException {
(buffImg, "png", sos);
();
}
public BufferedImage getBuffImg() {
return buffImg;
}
public static String getCode() {
return code;
}
}