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优化验证码效果

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This commit is contained in:
whvcse@foxmail.com
2018-08-09 15:50:40 +08:00
parent 7defc7e727
commit 27af06eff5
9 changed files with 139 additions and 85 deletions
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16
src/main/java/com/wf/captcha/ChineseGifCaptcha.java
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@@ -28,7 +28,7 @@ public class ChineseGifCaptcha extends ChineseCaptchaAbstract {
@Override
public boolean out(OutputStream os) {
checkAlpha();
boolean ok = false;
boolean ok;
try {
char[] rands = textChar(); // 获取验证码数组
GifEncoder gifEncoder = new GifEncoder();
@@ -71,7 +71,6 @@ public class ChineseGifCaptcha extends ChineseCaptchaAbstract {
// 抗锯齿
AlphaComposite ac3;
g2d.setColor(fontcolor);
g2d.setFont(font);
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
// 画验证码
int hp = (height - font.getSize()) >> 1;
@@ -96,23 +95,16 @@ public class ChineseGifCaptcha extends ChineseCaptchaAbstract {
if (y - font.getSize() < 0) {
y = font.getSize();
}
g2d.setFont(font.deriveFont(num(2) == 0 ? Font.PLAIN : Font.ITALIC));
g2d.drawString(String.valueOf(strs[i]), x, y);
}
// 随机画干扰线
g2d.setStroke(new BasicStroke(1.25f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL));
ac3 = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.45f);
g2d.setComposite(ac3);
for (int i = 0; i < 4; i++) {
int x1 = num(-10, width - 10);
int y1 = num(5, height - 5);
int x2 = num(10, width + 10);
int y2 = num(2, height - 2);
g2d.drawLine(x1, y1, x2, y2);
}
drawLine(1, g2d.getColor(), g2d);
// 画干扰圆圈
for (int i = 0; i < 8; i++) {
g2d.drawOval(num(width), num(height), 5 + num(50), 5 + num(50));
}
drawOval(3, g2d.getColor(), g2d);
g2d.dispose();
return image;
}