fix 自定义解密密文字符串当传入为空值时返回空字符串

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

@@ -1,5 +1,7 @@
 package com.jero.common.util;
 
+import org.apache.commons.lang3.StringUtils;
+
 import java.security.Key;
 import java.security.SecureRandom;
 import javax.crypto.Cipher;
@@ -153,8 +155,12 @@ public class PasswordUtil {
 	 * @throws Exception
 	 */
 	public static String decrypt(String ciphertext) {
+		if (StringUtils.isNotBlank(ciphertext)){
+			return decrypt(ciphertext, ALGORITHM, Salt);
+		}else {
+			return "";
+		}
 
-		return decrypt(ciphertext, ALGORITHM, Salt);
 	}
 
 	/**