loser/EasyCaptcha
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

增加中文验证码功能

Browse Source
This commit is contained in:
synchronized
2018-07-28 10:26:10 +08:00
parent bd976c7d25
commit c168c09fc9
9 changed files with 141 additions and 66 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
src/main/java/com/wf/captcha/SpecCaptcha.java
View File

@@ -57,32 +57,50 @@ public class SpecCaptcha extends Captcha {
try {
BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics2D g = (Graphics2D) bi.getGraphics();
AlphaComposite ac3;
int len = strs.length;
g.setColor(Color.WHITE);
g.fillRect(0, 0, width, height);
// 抗锯齿
g.setFont(font);
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
// 随机画干扰线
for (int i = 0; i < 12; i++) {
g.setColor(color(150, 250));
g.setStroke(new BasicStroke(1.1f + RANDOM.nextFloat() / 2, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL));
int x1 = num(-10, width - 10);
int y1 = num(5, height - 5);
int x2 = num(10, width + 10);
int y2 = num(2, height - 2);
g.setColor(color(150, 250));
g.setStroke(new BasicStroke(1.3f));
g.drawLine(x1, y1, x2, y2);
// 画干扰圆圈
g.setColor(color(100, 250));
g.drawOval(num(width), num(height), 5 + num(25), 5 + num(25));
}
g.setFont(font);
int h = height - ((height - font.getSize()) >> 1);
int w = width / len;
// 画字符串
for (int i = 0; i < len; i++) {
ac3 = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.75f);// 指定透明度
g.setComposite(ac3);
AlphaComposite ac3 = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.75f);// 指定透明度
g.setComposite(ac3);
int hp = (height - font.getSize()) >> 1;
int h = height - hp;
int w = width / strs.length;
int sp = (w - font.getSize()) / 2;
for (int i = 0; i < strs.length; i++) {
g.setColor(new Color(20 + num(110), 20 + num(110), 20 + num(110)));
g.drawString(String.valueOf(strs[i]), (width - (len - i) * w) + (w - font.getSize()) + num(7, 11), h - num(2, 6));
// 计算坐标
int x = i * w + sp + num(-Math.abs(sp), Math.abs(sp));
int y = h + num(-Math.abs(hp), Math.abs(hp));
if (x < 0) {
x = 0;
}
if (x + font.getSize() > width) {
x = width - font.getSize();
}
if (y > height) {
y = height;
}
if (y - font.getSize() < 0) {
y = font.getSize();
}
System.out.println(x + "--" + y);
g.drawString(String.valueOf(strs[i]), x, y);
}
ImageIO.write(bi, "png", out);
out.flush();