优化验证码效果
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@@ -32,7 +32,7 @@ public class GifCaptcha extends Captcha {
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@Override
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public boolean out(OutputStream os) {
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checkAlpha();
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boolean ok = false;
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boolean ok;
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try {
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char[] rands = textChar(); // 获取验证码数组
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GifEncoder gifEncoder = new GifEncoder();
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@@ -77,35 +77,27 @@ public class GifCaptcha extends Captcha {
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g2d.setColor(Color.WHITE);
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g2d.fillRect(0, 0, width, height);
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// 抗锯齿
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g2d.setFont(font);
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g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
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g2d.setStroke(new BasicStroke(1.3f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL));
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// 画干扰圆圈
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drawOval(4, g2d);
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// 随机画干扰线
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for (int i = 0; i < num(5, 12); i++) {
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g2d.setStroke(new BasicStroke(1.1f + RANDOM.nextFloat() / 2, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL));
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g2d.setColor(color(150, 250));
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int x1 = num(-10, width - 10);
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int y1 = num(5, height - 5);
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int x2 = num(10, width + 10);
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int y2 = num(2, height - 2);
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g2d.drawLine(x1, y1, x2, y2);
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// 画干扰圆圈
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g2d.setColor(color(100, 250));
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g2d.drawOval(num(width), num(height), 5 + num(25), 5 + num(25));
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}
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drawLine(2, g2d);
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// 画验证码
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int hp = (height - font.getSize()) >> 1;
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int h = height - hp;
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int w = width / strs.length;
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//int sp = (w - font.getSize()) / 2;
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int sp = (w - font.getSize()) / 2;
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for (int i = 0; i < strs.length; i++) {
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AlphaComposite ac3 = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, getAlpha(flag, i));
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g2d.setComposite(ac3);
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g2d.setColor(fontcolor[i]);
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// 计算坐标
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int x = i * w + num(6);
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int y = h - num(2, 8);
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if (x < 0) {
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x = 0;
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int x = i * w + sp + num(3);
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int y = h - num(3, 6);
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// 调整溢出的字
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if (x < 8) {
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x = 8;
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}
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if (x + font.getSize() > width) {
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x = width - font.getSize();
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@@ -116,6 +108,7 @@ public class GifCaptcha extends Captcha {
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if (y - font.getSize() < 0) {
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y = font.getSize();
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}
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g2d.setFont(font.deriveFont(num(2) == 0 ? Font.PLAIN : Font.ITALIC));
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g2d.drawString(String.valueOf(strs[i]), x, y);
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}
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g2d.dispose();
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