图形验证码

server/src/main/java/com/pica/cloud/account/account/server/util/captcha/CaptchaUtil.java

@@ -33,7 +33,7 @@ public class CaptchaUtil {
         try {
             BufferedImage img = createCaptcha(text, ctx);
             ByteArrayOutputStream baos = new ByteArrayOutputStream();
-            ImageIO.write(img, "jpg", baos);
+            ImageIO.write(img, "png", baos);
             baos.flush();
             ret = baos.toByteArray();
             baos.close();
@@ -54,17 +54,17 @@ public class CaptchaUtil {
         URL url = CaptchaUtil.class.getClassLoader().getResource(name);
         BufferedImage image = ImageIO.read(url);
         Graphics2D g2d = image.createGraphics();
-        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
+        //g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
         //g2d.setBackground(Color.WHITE);
         g2d.setColor(Color.BLACK);
 
         //clearCanvas(g2d, ctx);
+        //if (ctx.showGrid) {
+        //    drawGrid(g2d, ctx);
+        //}
 
-        if (ctx.showGrid) {
-            //drawGrid(g2d, ctx);
-        }
-
-        int charMaxWidth = ctx.width / text.length;
+        ctx.height = image.getHeight();
+        int charMaxWidth = image.getWidth() / text.length;
         int xPos = 0;
         for (char ch : text) {
             drawCharacter(g2d, ctx, ch, xPos, charMaxWidth);
@@ -72,6 +72,7 @@ public class CaptchaUtil {
         }
 
         g2d.dispose();
+
         return image;
     }