diff --git a/pay-java-common/src/main/java/com/egzosn/pay/common/util/DateUtils.java b/pay-java-common/src/main/java/com/egzosn/pay/common/util/DateUtils.java
index 530741e..39081ea 100644
--- a/pay-java-common/src/main/java/com/egzosn/pay/common/util/DateUtils.java
+++ b/pay-java-common/src/main/java/com/egzosn/pay/common/util/DateUtils.java
@@ -8,34 +8,35 @@ import java.util.*;
 
 /**
  * 日期转换运算工具
- * @author  egan
- * <pre>
- * email egzosn@gmail.com
- * date 2018-11-21 16:43:20
- * </pre>
+ *
+ * @author egan
+ *         <pre>
+ *         email egzosn@gmail.com
+ *         date 2018-11-21 16:43:20
+ *         </pre>
  */
 public final class DateUtils {
 
     static final class DateFormatHolder {
-        private static final ThreadLocal<SoftReference<Map<String, SimpleDateFormat>>> THREADLOCAL_FORMATS = new ThreadLocal();
+        private static final ThreadLocal<SoftReference<Map<String, SimpleDateFormat>>> THREADLOCAL_FORMATS = new ThreadLocal<SoftReference<Map<String, SimpleDateFormat>>>();
 
         DateFormatHolder() {
         }
 
         public static SimpleDateFormat formatFor(String pattern) {
-            SoftReference ref = (SoftReference)THREADLOCAL_FORMATS.get();
-            Object formats = ref == null?null:(Map)ref.get();
-            if(formats == null) {
-                formats = new HashMap();
+            SoftReference<Map<String, SimpleDateFormat>> ref = THREADLOCAL_FORMATS.get();
+            Map<String, SimpleDateFormat> formats = ref == null ? null : ref.get();
+            if (formats == null) {
+                formats = new HashMap<String, SimpleDateFormat>();
                 THREADLOCAL_FORMATS.set(new SoftReference(formats));
             }
 
-            SimpleDateFormat format = (SimpleDateFormat)((Map)formats).get(pattern);
+            SimpleDateFormat format =  formats.get(pattern);
 
-            if(format == null) {
+            if (format == null) {
                 format = new SimpleDateFormat(pattern);
                 format.setTimeZone(TimeZone.getTimeZone("GMT+8"));
-                ((Map)formats).put(pattern, format);
+                ((Map) formats).put(pattern, format);
             }
 
             return format;
@@ -46,8 +47,8 @@ public final class DateUtils {
         }
     }
 
-    public static final String  YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";
-    public static final String  YYYY_MM_DD = "yyyy-MM-dd";
+    public static final String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";
+    public static final String YYYY_MM_DD = "yyyy-MM-dd";
     public static final String YYYYMMDD = "yyyyMMdd";
     public static final String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";
     public static final String MMDD = "MMdd";
@@ -56,41 +57,46 @@ public final class DateUtils {
     public static String formatDate(Date date, String pattern) {
         Args.notNull(date, "Date");
         Args.notNull(pattern, "Pattern");
-         SimpleDateFormat formatFor = DateFormatHolder.formatFor(pattern);
+        SimpleDateFormat formatFor = DateFormatHolder.formatFor(pattern);
         return formatFor.format(date);
     }
-    public static final String format(Date date){
+
+    public static final String format(Date date) {
         return formatDate(date, YYYY_MM_DD_HH_MM_SS);
     }
 
-    public static final String formatDay(Date date){
-        return  formatDate(date, YYYY_MM_DD);
+    public static final String formatDay(Date date) {
+        return formatDate(date, YYYY_MM_DD);
     }
 
     /**
      * 剩余分钟数
+     *
      * @param date 结束点日期
      * @return 分钟数
      */
-    public static final long minutesRemaining(Date date){
-        return (date.getTime() - System.currentTimeMillis()) / 1000 / 60 ;
+    public static final long minutesRemaining(Date date) {
+        return (date.getTime() - System.currentTimeMillis()) / 1000 / 60;
     }
 
     /**
      * 剩余小时
+     *
      * @param date 结束点日期
      * @return 小时数
      */
-    public static final long remainingHours(Date date){
-        return minutesRemaining(date) / 60 ;
+    public static final long remainingHours(Date date) {
+        return minutesRemaining(date) / 60;
     }
+
     /**
      * 剩余天数
+     *
      * @param date 结束点日期
      * @return 天数
      */
-    public static final long remainingDays(Date date){
-        return remainingHours(date) / 24 ;
+    public static final long remainingDays(Date date) {
+        return remainingHours(date) / 24;
     }
 
 }
diff --git a/pay-java-common/src/main/java/com/egzosn/pay/common/util/sign/CertDescriptor.java b/pay-java-common/src/main/java/com/egzosn/pay/common/util/sign/CertDescriptor.java
index 9d1e75d..3577a11 100644
--- a/pay-java-common/src/main/java/com/egzosn/pay/common/util/sign/CertDescriptor.java
+++ b/pay-java-common/src/main/java/com/egzosn/pay/common/util/sign/CertDescriptor.java
@@ -50,6 +50,8 @@ public class CertDescriptor {
      */
     private X509Certificate rootKeyCert = null;
 
+    public CertDescriptor() {
+    }
 
     /**
      * 通过证书路径初始化为公钥证书