调增数组格式声明，random随机转换修正

ruoyi-common/src/main/java/com/ruoyi/common/core/text/Convert.java

@@ -894,7 +894,7 @@ public class Convert
      */
     public static String toSBC(String input, Set<Character> notConvertSet)
     {
-        char c[] = input.toCharArray();
+        char[] c = input.toCharArray();
         for (int i = 0; i < c.length; i++)
         {
             if (null != notConvertSet && notConvertSet.contains(c[i]))
@@ -936,7 +936,7 @@ public class Convert
      */
     public static String toDBC(String text, Set<Character> notConvertSet)
     {
-        char c[] = text.toCharArray();
+        char[] c = text.toCharArray();
         for (int i = 0; i < c.length; i++)
         {
             if (null != notConvertSet && notConvertSet.contains(c[i]))

ruoyi-framework/src/main/java/com/ruoyi/framework/config/KaptchaTextCreator.java

@@ -20,7 +20,7 @@ public class KaptchaTextCreator extends DefaultTextCreator
         int x = random.nextInt(10);
         int y = random.nextInt(10);
         StringBuilder suChinese = new StringBuilder();
-        int randomoperands = (int) Math.round(Math.random() * 2);
+        int randomoperands = random.nextInt(3);
         if (randomoperands == 0)
         {
             result = x * y;
@@ -30,7 +30,7 @@ public class KaptchaTextCreator extends DefaultTextCreator
         }
         else if (randomoperands == 1)
         {
-            if (!(x == 0) && y % x == 0)
+            if ((x != 0) && y % x == 0)
             {
                 result = y / x;
                 suChinese.append(CNUMBERS[y]);