Spring应用程序上下文为null [英] Spring application context is null
问题描述
我正在使用带有JavaFX的Spring Boot 1.3.3.应用程序以此成功启动启动屏幕(此时applicationContext不为空)
I am using Spring Boot 1.3.3, with JavaFX. The application successfully launches Splash screen with this(at this point applicationContext is not null)
@SpringBootApplication
public class PirconApplication extends Application{
@Bean(name = "primaryStage")
public Stage getPrimaryStage() {
return new Stage(StageStyle.DECORATED);
}
private ConfigurableApplicationContext applicationContext = null;
private static String[] args = null;
@Override
public void stop() throws Exception {
super.stop();
Platform.exit();
applicationContext.close();
}
@Override
public void start(Stage primaryStage) throws Exception {
Task<Object> worker = worker();
worker.setOnSucceeded(new EventHandler<WorkerStateEvent>() {
@Override
public void handle(WorkerStateEvent event) {
try {
AppSplashController loader = applicationContext.getBean(AppSplashController.class);
Stage stage = applicationContext.getBean(Stage.class);
stage.setScene(loader.init());
stage.initStyle(StageStyle.UNDECORATED);
stage.show();
} catch (IOException e) {
e.printStackTrace();
System.exit(0);
}
}
});
worker.setOnFailed(new EventHandler<WorkerStateEvent>() {
@Override
public void handle(WorkerStateEvent event) {
// TODO Auto-generated method stub
System.exit(0);
}
});
worker.run();
}
public static void main(String[] args) {
PirconApplication.args = args;
launch(PirconApplication.class, args);
}
private Task<Object> worker() {
return new Task<Object>() {
@Override
protected Object call() throws Exception {
applicationContext = SpringApplication.run(PirconApplication.class, args);
return null;
}
};
}
}
问题出在AppSplashController applicationContext中,并且primaryStage bean都为空.
Problem is in AppSplashController applicationContext and primaryStage beans are all null.
@Component
public class AppSplashController implements BootInitializable {
@FXML
private ImageView imgLoading;
@FXML
private Text lblWelcome;
@FXML
private Text lblRudy;
@FXML
private VBox vboxBottom;
@FXML
private Label lblClose;
private Stage primaryStage;
private ApplicationContext springContainer;
/**
* Initializes the controller class.
*/
@Override
public void initialize(URL url, ResourceBundle rb) {
System.out.println("applicationContext: "+springContainer);
System.out.println("primaryStage: "+primaryStage);
}
}
@Autowired
@Override
public void setPrimaryStage(Stage primaryStage) {
this.primaryStage = primaryStage;
}
@Override
public Scene init() throws IOException {
Parent root = FXMLLoader.load(getClass().getResource("/com/pircon/views/splash.fxml"));
return new Scene(root);
}
@Override
public void setApplicationContext(ApplicationContext ac) throws BeansException {
this.springContainer = ac;
}
}
BootInitializable接口
BootInitializable interface
public interface BootInitializable extends Initializable, ApplicationContextAware {
public Scene init() throws IOException;
public void setPrimaryStage(Stage primaryStage);
}
这是我在春季和春季靴子上的第一个项目,请原谅我的无知.
This is my first project in spring and spring boot, so pardon my ignorance.
推荐答案
我认为您需要指定spring来设置这些bean的自动装配.例如
I think you need specify spring to set autowire these beans. For example
@Autowired
private ApplicationContext springContainer;
另一个建议是使用ApplicationContextProvider,它实现了Spring ApplicationContextAware接口.
Another suggestion is use ApplicationContextProvider which implements springs ApplicationContextAware interface.
public class ApplicationContextProvider implements ApplicationContextAware {
private static ApplicationContext context;
public static ApplicationContext getApplicationContext() {
return context;
}
@Override
public void setApplicationContext(ApplicationContext ctx) {
context = ctx;
}
}
您可以通过ApplicationContextProvider.getApplicationContext();
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