图形验证码

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

 package com.pica.cloud.account.account.server.util.captcha;
 
+import org.apache.commons.io.IOUtils;
+
 import java.awt.*;
+import java.io.ByteArrayInputStream;
 import java.io.IOException;
+import java.io.InputStream;
 import java.util.Random;
 import java.util.concurrent.ThreadLocalRandom;
 
@@ -25,13 +29,29 @@ public class CaptchaContext {
 
     public Font font;
 
+    static byte[][] fontDatas = new byte[4][];
+
+    static {
+        try {
+            InputStream fontStream = CaptchaGenerator.class.getClassLoader().getResourceAsStream("1.ttf");
+            fontDatas[0] = IOUtils.toByteArray(fontStream);
+            fontStream = CaptchaGenerator.class.getClassLoader().getResourceAsStream("2.ttf");
+            fontDatas[1] = IOUtils.toByteArray(fontStream);
+            fontStream = CaptchaGenerator.class.getClassLoader().getResourceAsStream("3.ttf");
+            fontDatas[2] = IOUtils.toByteArray(fontStream);
+            fontStream = CaptchaGenerator.class.getClassLoader().getResourceAsStream("4.ttf");
+            fontDatas[3] = IOUtils.toByteArray(fontStream);
+        } catch (IOException ex) {
+        }
+    }
+
     public CaptchaContext(int width, int height, int fontSize, boolean showGrid) throws FontFormatException, IOException {
         this.width = width;
         this.height = height;
         this.fontSize = fontSize;
         this.showGrid = showGrid;
-        String name = "/" + (ThreadLocalRandom.current().nextInt(0, fontCount) + 1) + ".ttf";
-        this.font = Font.createFont(Font.TRUETYPE_FONT, CaptchaGenerator.class.getResourceAsStream(name));
+        int index = ThreadLocalRandom.current().nextInt(0, fontCount);
+        this.font = Font.createFont(Font.TRUETYPE_FONT, new ByteArrayInputStream(fontDatas[index]));
     }
 
     public int rndGridSize() {

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

 package com.pica.cloud.account.account.server.util.captcha;
 
+import org.apache.commons.io.IOUtils;
 import javax.imageio.ImageIO;
 import java.awt.*;
 import java.awt.image.BufferedImage;
+import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
-import java.net.URL;
+import java.io.InputStream;
 import java.util.UUID;
 import java.util.concurrent.ThreadLocalRandom;
 
@@ -16,6 +18,15 @@ import java.util.concurrent.ThreadLocalRandom;
 public class CaptchaUtil {
 
     final static int MAXSIZE = UUID.randomUUID().toString().replace("_", "").length();
+    static byte[] imageData;
+
+    static {
+        try {
+            InputStream imageStream = CaptchaUtil.class.getClassLoader().getResourceAsStream("1.png");
+            imageData = IOUtils.toByteArray(imageStream);
+        } catch (IOException ex) {
+        }
+    }
 
     public static String generateUUIDText(int count) {
         int pos = count < MAXSIZE ? count : MAXSIZE;
@@ -45,8 +56,7 @@ public class CaptchaUtil {
         }
 
         //BufferedImage image = new BufferedImage(ctx.width, ctx.height, BufferedImage.TYPE_INT_RGB);
-        URL url = CaptchaUtil.class.getClassLoader().getResource("1.png");
-        BufferedImage image = ImageIO.read(url);
+        BufferedImage image = ImageIO.read(new ByteArrayInputStream(imageData));
         Graphics2D g2d = image.createGraphics();
         //g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
         //g2d.setBackground(Color.WHITE);