增加回显验证数据接口

server/src/main/java/com/fanjiao/captcha/server/CaptchaApplication.java

@@ -104,6 +104,18 @@ public class CaptchaApplication extends DefaultImageCaptchaApplication {
         );
     }
 
+    /**
+     * 获取二次校验数据
+     *
+     * @param key 验证码key
+     * @return 二次校验数据
+     */
+    public Map<String, Object> getSecondaryData(String key) {
+        if (key == null || key.isEmpty()) return null;
+        var secondary = prop.getSecondary();
+        return getCacheStore().getAndRemoveCache(secondary.getKeyPrefix().concat(":").concat(key));
+    }
+
     /**
      * 二次校验（使用）验证码
      *
@@ -114,12 +126,7 @@ public class CaptchaApplication extends DefaultImageCaptchaApplication {
         if (data == null) return false;
 
         //读取二次校验数据
-        var secondary = prop.getSecondary();
-        var verification = getCacheStore().getAndRemoveCache(secondary.getKeyPrefix().concat(":").concat(data.getKey()));
-        if (verification == null) {
-            //如果没有校验数据，那么视为校验失败
-            return false;
-        }
+        var verification = getSecondaryData(data.getKey());
 
         //如果传入了ip，那就校验ip
         String ip = data.getIp();

server/src/main/java/com/fanjiao/captcha/server/CaptchaController.java

@@ -119,4 +119,16 @@ public class CaptchaController {
 
         return Response.success();
     }
+
+    @RequestMapping("/verifyInfo")
+    public Response<?> verifyCaptcha(
+            @RequestParam(name = "key") String key
+    ) {
+        var data = imageCaptchaApplication.getSecondaryData(key);
+        if (data == null) {
+            return Response.fail("未验证的数据");
+        } else {
+            return Response.success(data);
+        }
+    }
 }