javafx 找到正确的路径 [英] javafx find the right path

问题描述

我得到以下结构:

<块引用>

项目|---+构建|---+距离|---+nbproject|----src|-------客户|-----------东西|---------控制器|----------------DefaultController.java|------文件|-------------fxml|----------------默认FXML.fxml|------img|-------------lib|---------------ContentManager.java|---------根|---------------StartClass.Java|---+build.xml|---manifest.mf

我在 ContentManager 中设置了 fxml 文件，例如:

public static final StringDEFAULT_SCREEN_FXML = "../fxml/Default.fxml";

但我总是得到一个 nullPointerException.而且我不想使用绝对路径.那么如何找出相对路径呢?是否正确设置 fxml 文件的控制器:

fx:id="client.stuff.controller.DefaultController"

??

解决方案

部署应用程序时，通常会创建一个 jar 文件，其中包含类文件和所有资源.您需要从 jar 文件内部加载 fxml 文件，即作为资源.在这种情况下，路径元素.."实际上没有任何意义.

使用

public static final StringDEFAULT_SCREEN_FXML = "/client/stuff/fxml/Default.fxml";

(路径是相对于类路径的).

当然加载它

FXMLLoader loader = new FXMLLoader(getClass().getResource(DEFAULT_SCREEN_FXML));

或类似的东西.

I get following structure:

project
|---+build
|---+dist
|---+nbproject
|----src
|-------client
|----------stuff
|-------------controller
|----------------DefaultController.java
|-------------files
|-------------fxml
|----------------DefaultFXML.fxml
|-------------img
|-------------lib
|---------------ContentManager.java
|-------------root
|---------------StartClass.Java
|---+build.xml
|---manifest.mf

I'm setting in the ContentManager the fxml-Files like:

public static final String 
        DEFAULT_SCREEN_FXML = "../fxml/Default.fxml";

But i get allways a nullPointerException. And i dont want to work with absolute Path. So how to finde out the relative path? And is it right to set the controller of the fxml-file with:

fx:id="client.stuff.controller.DefaultController"

??

解决方案

When you deploy your application, you typically create a jar file which includes the class files and all the resources. You need to load the fxml file from inside the jar file, i.e. as a resource. In this context, the path element ".." doesn't really mean anything.

Use

public static final String 
        DEFAULT_SCREEN_FXML = "/client/stuff/fxml/Default.fxml";

(the path is relative to the classpath).

and of course load it with

FXMLLoader loader = new FXMLLoader(getClass().getResource(DEFAULT_SCREEN_FXML));

or something similar.

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