如何在MacOS的NetBeans新JavaFX桌面项目中导入Scene Builder .fxml文件

Hey there! I totally get that connecting SceneBuilder and NetBeans can feel a bit confusing when you're just starting out. Let me walk you through the exact, step-by-step process to get your custom FXML GUI up and running in a NetBeans project:

• Open NetBeans, then go to File > New Project from the top menu bar.
• In the "Choose Project" window, expand the JavaFX category on the left, select JavaFX Application, and click Next.
• Name your project (something like "MyFirstFXMLApp"), pick a save location, and hit Finish. NetBeans will generate a basic project with a default main class and sample FXML file—we’ll replace that sample file with yours soon.

First, let’s make sure NetBeans knows where your SceneBuilder is installed, so you can edit FXML files directly later:

• Go to Tools > Options in NetBeans.
• Switch to the Java tab, then the JavaFX sub-tab.
• Click Browse next to "SceneBuilder Home" and navigate to your SceneBuilder installation folder (e.g., C:\Program Files\SceneBuilder on Windows, /Applications/SceneBuilder.app on macOS).
• Click OK to save this setting.

• In the left-hand "Projects" pane, expand your new project, then the src folder, and finally your main package (like com.myfxapp).
• Right-click on the main package, select Import > File....
• Navigate to where you saved your FXML file, select it, and click Open. NetBeans will copy the file into your project’s package.

The default main class uses the sample FXML—we need to point it to your file instead:

• Double-click the main class file (usually named Main.java) to open it.
• Find this line of code:

  Parent root = FXMLLoader.load(getClass().getResource("Sample.fxml"));
  

• Replace "Sample.fxml" with your FXML file’s name, like "MyCustomGUI.fxml".
• Save the file (Ctrl+S or Cmd+S).

• Click the green "Run" button in NetBeans (or press F6). Your application should launch, and you’ll see the GUI you built in SceneBuilder!

• If you get a "file not found" error, double-check that the filename in the FXMLLoader line matches exactly (it’s case-sensitive!) and that your FXML file is in the same package as the main class.
• If you plan to connect GUI controls to Java code later, make sure you set unique fx:id values for those controls in SceneBuilder first.

内容的提问来源于stack exchange，提问作者Nate Lockwood