diff --git a/jero-boot/jero-boot-base/jero-boot-base-core/src/main/java/com/jero/common/util/PasswordUtil.java b/jero-boot/jero-boot-base/jero-boot-base-core/src/main/java/com/jero/common/util/PasswordUtil.java
index bf534771..85004a15 100644
--- a/jero-boot/jero-boot-base/jero-boot-base-core/src/main/java/com/jero/common/util/PasswordUtil.java
+++ b/jero-boot/jero-boot-base/jero-boot-base-core/src/main/java/com/jero/common/util/PasswordUtil.java
@@ -9,6 +9,10 @@ import javax.crypto.spec.PBEKeySpec;
 import javax.crypto.spec.PBEParameterSpec;
 public class PasswordUtil {
 
+	private PasswordUtil(){
+
+	}
+
 	/**
 	 * JAVA6支持以下任意一种算法 PBEWITHMD5ANDDES PBEWITHMD5ANDTRIPLEDES
 	 * PBEWITHSHAANDDESEDE PBEWITHSHA1ANDRC2_40 PBKDF2WITHHMACSHA1
@@ -18,7 +22,7 @@ public class PasswordUtil {
 	 * 定义使用的算法为:PBEWITHMD5andDES算法
 	 */
 	public static final String ALGORITHM = "PBEWithMD5AndDES";//加密算法
-	public static final String Salt = "63293188";//密钥
+	public static final String SALT = "63293188";//密钥
 
 	/**
 	 * 定义迭代次数为1000次
@@ -27,10 +31,10 @@ public class PasswordUtil {
 
 	/**
 	 * 获取加密算法中使用的盐值,解密中使用的盐值必须与加密中使用的相同才能完成操作. 盐长度必须为8字节
-	 * 
+	 *
 	 * @return byte[] 盐值
 	 * */
-	public static byte[] getSalt() throws Exception {
+	public static byte[] getSalt() {
 		// 实例化安全随机数
 		SecureRandom random = new SecureRandom();
 		// 产出盐
@@ -39,12 +43,12 @@ public class PasswordUtil {
 
 	public static byte[] getStaticSalt() {
 		// 产出盐
-		return Salt.getBytes();
+		return SALT.getBytes();
 	}
 
 	/**
 	 * 根据PBE密码生成一把密钥
-	 * 
+	 *
 	 * @param password
 	 *            生成密钥时所使用的密码
 	 * @return Key PBE算法密钥
@@ -69,7 +73,7 @@ public class PasswordUtil {
 
 	/**
 	 * 加密明文字符串
-	 * 
+	 *
 	 * @param plaintext
 	 *            待加密的明文字符串
 	 * @param password
@@ -92,6 +96,7 @@ public class PasswordUtil {
 			encipheredData = cipher.doFinal(plaintext.getBytes("utf-8"));
 			//update-end-author:sccott date:20180815 for:中文作为用户名时，加密的密码windows和linux会得到不同的结果 gitee/issues/IZUD7
 		} catch (Exception e) {
+			e.printStackTrace();
 		}
 		return bytesToHexString(encipheredData);
 	}
@@ -105,13 +110,13 @@ public class PasswordUtil {
 	 * @throws Exception
 	 */
 	public static String encrypt(String plaintext) {
-		return encrypt(plaintext, ALGORITHM, Salt);
+		return encrypt(plaintext, ALGORITHM, SALT);
 	}
 
 
 	/**
 	 * 解密密文字符串
-	 * 
+	 *
 	 * @param ciphertext
 	 *            待解密的密文字符串
 	 * @param password
@@ -142,7 +147,7 @@ public class PasswordUtil {
 
 	/**
 	 * 将字节数组转换为十六进制字符串
-	 * 
+	 *
 	 * @param src
 	 *            字节数组
 	 * @return
@@ -165,13 +170,13 @@ public class PasswordUtil {
 
 	/**
 	 * 将十六进制字符串转换为字节数组
-	 * 
+	 *
 	 * @param hexString
 	 *            十六进制字符串
 	 * @return
 	 */
 	public static byte[] hexStringToBytes(String hexString) {
-		if (hexString == null || hexString.equals("")) {
+		if (hexString == null || "".equals(hexString)) {
 			return null;
 		}
 		hexString = hexString.toUpperCase();
@@ -180,7 +185,7 @@ public class PasswordUtil {
 		byte[] d = new byte[length];
 		for (int i = 0; i < length; i++) {
 			int pos = i * 2;
-			d[i] = (byte) (charToByte(hexChars[pos]) << 4 | charToByte(hexChars[pos + 1]));
+			d[i] = (byte) (charToByte(hexChars[pos]) << 4 | charToByte(hexChars[pos + 1]) & 0xff);
 		}
 		return d;
 	}
@@ -190,4 +195,4 @@ public class PasswordUtil {
 	}
 
 
-}
\ No newline at end of file
+}