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尝试加载FXML文件时出现NullPointerException - 仅在作为Jar文件运行时

[英]NullPointerException when trying to load an FXML file - only when run as Jar file

原文 2015-02-18 19:00:41 1 1 java/ eclipse/ javafx

I'm developing a small application to learn JavaFX with. 我正在开发一个小应用程序来学习JavaFX。 I've run into an issue where when I run my app with an IDE (Eclipse) it works perfectly. 我遇到了一个问题，当我用IDE（Eclipse）运行我的应用程序时，它运行得很好。 However when I export the project to a runnable Jar file, and try to run the jar file, the window I want to pop up doesn't. 但是，当我将项目导出到可运行的Jar文件，并尝试运行jar文件时，我想要弹出的窗口不会。 I've exported it as every type of the three options eclipse allows. 我已经将它导出为eclipse允许的三种选项中的每一种。

I ran it through the command line to get the stacktrace: 我通过命令行运行它来获取stacktrace：

http://pastebin.com/tfkJFnEZ http://pastebin.com/tfkJFnEZ

The rest of the app works great, just this one window. 应用程序的其余部分工作得很好，只有这一个窗口。 What is puzzling to me (as a beginner) is why it will run in Eclipse but not after exportation. 让我感到困惑的是（作为初学者）是为什么它会在Eclipse中运行而不是在导出后运行。 I'm not sure what is changing in the way I want to open the file, so I'm not sure where to look for my error. 我不确定我想要打开文件的方式有什么变化，所以我不确定在哪里查找我的错误。

If there is anything else I need to provide to assist just let me know, I appreciate any advice anyone can give. 如果我需要提供任何其他信息以帮助我告诉我，我感谢任何人都能给予的建议。

1 个解决方案

So what I found was that when I tried to set data into the TableView (shown as an error at line 39 in the stacktrace) it was throwing the error. 所以我发现当我尝试将数据设置到TableView（在堆栈跟踪中第39行显示为错误）时，它就抛出了错误。 It turns outthe TableView was set as static. 事实证明，TableView被设置为静态。 I honestly am not sure why I set it up this way, but as soon as I removed the "static" in front of it the windows pops open and works. 老实说，我不知道为什么我这样设置它，但是一旦我删除它前面的“静态”，窗口就会弹出并打开。 I feel a little silly that it was something so simple. 我觉得有点傻，这很简单。

However, I'm still confused as to why a static TableView that works in Eclipse fail to work on a Jar file. 但是，我仍然感到困惑的是为什么在Eclipse中工作的静态TableView无法在Jar文件上工作。 Anyone have any ideas? 有人有想法么？