Java Ldap 将 lastLogonTimestamp 转换为 DateTime

我正在编写一个小型 Java 应用程序。我读出了几个 Active Directory 用户属性。其中一个属性是 lastLogonTimestamp。

//Specify the attributes to return 
          String returnedAtts[]={"accountExpires","lastLogonTimestamp"}; 
          searchCtls.setReturningAttributes(returnedAtts); 
 
          //Search for objects using the filter 
          NamingEnumeration answer = ctx.search(searchBase, searchFilter, searchCtls); 
 
          //Loop through the search results 
          while (answer.hasMoreElements()) { 
               SearchResult sr = (SearchResult)answer.next(); 
 
               System.out.println(">>>" + sr.getName()); 
 
               //Print out the groups 
 
               Attributes attrs = sr.getAttributes(); 
               if (attrs != null) { 
                    String accountExpires = attrs.get("accountExpires").toString(); 
                    Attribute lastLogon = attrs.get("lastLogonTimestamp"); 
 
 
               } 
          } 

但我不知道如何将属性 lastLogonTimestamp 转换为字符串或其他内容以便我可以使用它。 函数 .toString 不起作用。当我尝试时收到错误消息:

Exception in thread "JavaFX Application Thread"       java.lang.RuntimeException: java.lang.reflect.InvocationTargetException 
at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1762) 
at   javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java: 1645) 
at  com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86) 
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238) 
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191) 
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59) 
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58) 
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74) 
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49) 
at javafx.event.Event.fireEvent(Event.java:198) 
at javafx.scene.Node.fireEvent(Node.java:8216) 
at javafx.scene.control.Button.fire(Button.java:185) 
at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182) 
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96) 
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89) 
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218) 
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80) 
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238) 
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191) 
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59) 
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58) 
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74) 
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54) 
at javafx.event.Event.fireEvent(Event.java:198) 
at javafx.scene.Scene$MouseHandler.process(Scene.java:3724) 
at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3452) 
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1728) 
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2461) 
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:348) 
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:273) 
at java.security.AccessController.doPrivileged(Native Method) 
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:382) 
at com.sun.glass.ui.View.handleMouseEvent(View.java:553) 
at com.sun.glass.ui.View.notifyMouse(View.java:925) 
Caused by: java.lang.reflect.InvocationTargetException 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:483) 
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71) 
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:483) 
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275) 
at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1759) 
... 43 more 
Caused by: java.lang.NullPointerException 
at application.ADfunctions.getUserStats(ADfunctions.java:250) 
at application.ADfunctions.getADGroupMember(ADfunctions.java:165) 
at application.ADfunctions.LDAPAuth(ADfunctions.java:96) 
at controller.loginController.loginIsClicked(loginController.java:34) 
... 53 more 

有人可以帮帮我吗？为什么 Attribute .toString() 不起作用。如果它可行，我可以解析它很长时间，然后将其转换为 DateTime。请需要帮助。

请您参考如下方法:

要将 Win32 文件时间字符串转换为日期，请使用:

long fileTime = (Long.parseLong(inputDateString) / 10000L) - + 11644473600000L; 
Date inputDate = new Date(fileTime); 

要将日期转换为 Win32 文件时间，请使用:

long fileTime = (inputDate.getTime() + 11644473600000L) * 10000L; 
String outputDate = Long.toString(fileTime); 

例如 131220409910000000 将转换为 2016/10/27 14-23-11 反之亦然

检查这个 url 以获得一个不错的在线纪元/文件时间转换器:

http://www.epochconverter.com/ldap