获取上次登录时间判空

sso-common/src/main/java/com/uas/sso/entity/UserAccount.java

@@ -287,7 +287,7 @@ public class UserAccount implements Serializable {
     }
 
     public Date getLastLoginTime() {
-        return new Date(lastLoginTime);
+        return lastLoginTime == null ? null : new Date(lastLoginTime);
     }
 
     public void setLastLoginTime(Long lastLoginTime) {