I know little about Spring, but Koen Serneels wrote a nice blog on Spring and JavaFX integration. The magic key to getting the dependency injection in Spring to work together with JavaFX controllers is to set a controller factory on the FXMLLoader.
Here is a quick sketch of the relevant loading code using Java 8 syntax (I haven't tested it as I don't use Spring - if it doesn't work, please edit the post and correct it if you can).
import java.io.*;
import javafx.fxml.FXMLLoader;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
public class SpringFxmlLoader {
private static final ApplicationContext applicationContext =
new AnnotationConfigApplicationContext(
SpringApplicationConfig.class
);
public Object load(String url) throws IOException {
FXMLLoader loader = new FXMLLoader();
loader.setControllerFactory(
(clazz) -> applicationContext.getBean(clazz)
);
return loader.load(
SpringFxmlLoader.class.getResourceAsStream(url)
);
}
}