修改验证码图片生成

src/main/java/com/scbfkj/uni/library/ImageUtil.java

@@ -36,7 +36,7 @@ public class ImageUtil {
 
     private static BufferedImage createImage(String verifyCode) throws IOException, FontFormatException {
         BufferedImage image = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_RGB);
-        Graphics graphics = image.getGraphics();
+        Graphics2D graphics = image.createGraphics();
 
         graphics.setColor(Color.WHITE);
         graphics.fillRect(0, 0, WIDTH, HEIGHT);
@@ -50,17 +50,17 @@ public class ImageUtil {
         font  = font.deriveFont((float) (HEIGHT - 10));
         graphics.setFont(font);
 
-        int desX, desY, distance = 16;
+        int desX, desY=HEIGHT-10, distance = 18;
+//        绘制验证码
         for (int i = 0; i < verifyCode.length(); i++) {
             graphics.setColor(COLORS[RANDOM.nextInt(COLORS.length)]);
-            desX = (i + 1) * distance;
-            desY = distance + RANDOM.nextInt(HEIGHT - 2 * distance);
-            graphics.drawString(Character.toString(verifyCode.charAt(i)), desX, desY);
+            desX = i * distance+18;
+            graphics.drawString(Character.toString(verifyCode.charAt(i)), desX,desY+ RANDOM.nextInt(desY%10));
         }
-
-        for (int x = 0; x < 150; x++) {
+//        绘制干扰线
+        for (int x = 0; x < 6; x++) {
             graphics.setColor(getRandomColor());
-            graphics.drawOval(RANDOM.nextInt(WIDTH), RANDOM.nextInt(HEIGHT), 1, 1);
+            graphics.drawLine(RANDOM.nextInt(WIDTH), RANDOM.nextInt(HEIGHT), RANDOM.nextInt(WIDTH), RANDOM.nextInt(HEIGHT));
         }
 
         graphics.dispose();