【fix sonar】StrAttackFilter文件

jero-boot/jero-boot-base/jero-boot-base-core/src/main/java/com/jero/common/util/filter/StrAttackFilter.java

@@ -9,6 +9,10 @@ import java.util.regex.PatternSyntaxException;
  */
 public class StrAttackFilter {
 
+    private StrAttackFilter(){
+
+    }
+
     public static String filter(String str) throws PatternSyntaxException {
         // 清除掉所有特殊字符
         String regEx = "[`_《》~!@#$%^&*()+=|{}':;',\\[\\].<>?~！@#￥%……&*（）——+|{}【】‘；：”“’。，、？]";