package com.wzc.utils;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Random;
import javax.imageio.ImageIO;
public class VerifyCode {
public static final char[] CHARS = { '2', '3', '4', '5', '6', '7', '8',
'9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M',
'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z' };
public static Random random = new Random();
public String getRandomString() {
StringBuffer buffer = new StringBuffer();
for (int i = 0; i < 4; i++) {
buffer.append(CHARS[random.nextInt(CHARS.length)]);
}
return buffer.toString();
}
public Color getRandomColor() {
return new Color(random.nextInt(255), random.nextInt(255), random
.nextInt(255));
}
public Color getReverseColor(Color c) {
return new Color(255 - c.getRed(), 255 - c.getGreen(), 255 - c
.getBlue());
}
String text = getRandomString();
public String getText() {
return text;
}
public BufferedImage getImage(int width,int height ){
Color color = getRandomColor();
Color reverse = getReverseColor(color);
BufferedImage bi = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
Graphics2D g = bi.createGraphics();
g.setFont(new Font(Font.SANS_SERIF, Font.BOLD, 20));
g.setColor(color);
g.fillRect(0, 0, width, height);
g.setColor(reverse);
g.drawString(text, 10, 22);
for (int i = 0, n = random.nextInt(80); i < n; i++) {
g.drawRect(random.nextInt(width), random.nextInt(height), 1, 1);
}
return bi;
}
public static void output(BufferedImage image, OutputStream out) throws IOException{
ImageIO.write(image, "JPEG", out);
}
}
qq_風是鹹的_0
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