如何使用spring在javaFX上正确设置spring上下文？

问题描述 投票：0回答：1

我正在编写与Spring和Maven集成的JavaFX应用程序，但是我认为Spring上下文无法在当前配置下正常工作。我想在JafaFX应用程序内部（在控制器类上）使用存储库类。 Spring可以导入JPA的需求配置，但是当我使用@Autowired批注注入我的存储库类时，当我尝试使用注入的元素时会得到NullPointerException。我该如何解决？

我正在使用给定的here方法启动应用程序，因此我有一个主类（AppLaucnher.java）启动FXApplication（FXLauncher.java）。 FXLauncher.java启动我想在控制器类（DialogLoginController.java）中使用的spring上下文，但没有成功。

另一方面，我的存储库测试使用Spring上下文可以正常工作。在下面显示我的代码。

我的AppLaucnher.java：

package io.sonoc.reportes.gui.main;

@Slf4j
public class AppLauncher {

    public static void main(String[] args) {
        log.info("Starting Spring Boot App");
        //Application.launch(FXLauncher.class);

        // Launch JavaFX with custom Preloader
        LauncherImpl.launchApplication(FXLauncher.class, FXPreloader.class, args);
    }

}

我在其中初始化spring上下文的FXLauncher.java类：

package io.sonoc.reportes.gui.main;

@SpringBootApplication
@Configuration
@Import({DataSourceConfig.class, JpaConfig.class})
@ComponentScan({"io.sonoc.reportes.gui.control", "io.sonoc.reportes.jpa.domain.d_authorization", "io.sonoc.reportes.jpa.repository.d_authorization"})
@Slf4j
public class FXLauncher extends Application {

    private ConfigurableApplicationContext springContext;

    @Override
    public void init() throws Exception {
        // Initializes Spring context
        springContext = SpringApplication.run(FXLauncher.class);
    }

    @Override
    public void start(Stage primaryStage) throws Exception {
        // JFX runtime calls " Application.stop()" on last window closing
        Platform.setImplicitExit(true);

        log.info("Starting JavaFX with primaryStage on FXLauncher: {}", primaryStage);

    @Override
    public void stop() throws Exception {
        springContext.stop();
    }

}

还有我想在其中使用存储库类的Controller类。

package io.sonoc.reportes.gui.control;

@Controller
@Transactional
@Data
@Slf4j
public class DialogLoginController{

    // Variables
    private static int sessionID = 0;
    private DialogLoginManager dialogLoginManager;
    @Autowired private UserRepository userRepository; // my repository class
    private QUser qUser = QUser.user;


         /**
     * Check if login (user) exists on the DB.
     */   
    private String searchLogin() {
        String login = "";
        Optional<User> user = userRepository.findById(1); // here I get the NullPointerException

        log.info("Found user: {}", user);

        if (user.isPresent()) {
            login = user.get().getLogin();
            log.info("User login: {}", login);
        }

        return login;

    }

存储库类如下：@Entity用户类别：

package io.sonoc.reportes.jpa.domain.d_authorization;

/**
 * The persistent class for the user database table.
 * 
 */
@Entity
@NamedQuery(name="User.findAll", query="SELECT u FROM User u")
@Table(name="user", schema="d_authorization")
@Data

public class User implements Serializable {
    private static final long serialVersionUID = 1L;

    @Id
    private Integer id;

    @Column(name="company_id")
    private Integer companyId;

    @Column(name="login")
    private String login;

}

@Repository UserRepository类：

package io.sonoc.reportes.jpa.repository.d_authorization;

@Repository
public interface UserRepository extends JpaRepository<User, Integer>, QuerydslPredicateExecutor<User>{

}

作为示例，我的测试班工作正常：

package io.sonoc.reportes.jpa.repository.d_authorization;

@RunWith(SpringRunner.class)
@ContextConfiguration(classes = { JpaConfig.class })
@Transactional
@SpringBootTest
@Slf4j
public class UserRepositoryTest {

    @Autowired
    private UserRepository userRepository;
    private QUser qUser = QUser.user;

    @Test
    public void test() {
        assertNotNull(userRepository);
        Optional<User> p = userRepository.findById(1);
        log.info(">>test --> : {}", p);
    }

    @Test // Search for "testUser"
    public void testQueryDsl() {
        Iterable<User> it = userRepository.findAll(qUser.login.contains("testUser"));
        log.info(">>test --> : {}", it);

        Optional<User> user = userRepository.findOne(qUser.login.contains("testUser"));
        log.info(">>test --> Found user: {}", user);
        if (user.isPresent()) {
            String login = user.get().getLogin();
            log.info(">>testQueryDsl --> User login: {}", login);
        }
    }

}

现在，当我从searchLogin()类执行方法DialogLoginController时，我得到下面的输出，但是我希望从数据库中得到返回，就像在测试类中一样：

2019-07-20 11:16:40,634 INFO  [main] io.sonoc.reportes.gui.main.AppLauncher: Starting Spring Boot App
2019-07-20 11:16:40,892 INFO  [JavaFX Application Thread] io.sonoc.reportes.gui.control.PreloaderController: New PreloaderController

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.1.6.RELEASE)

2019-07-20 11:16:42,926 INFO  [JavaFX-Launcher] io.sonoc.reportes.jpa.config.DataSourceConfig: Connected to DB: jdbc:postgresql://routing-dev.systemonenoc.com/dedalusdb
2019-07-20 11:16:42,927 INFO  [JavaFX-Launcher] io.sonoc.reportes.jpa.config.DataSourceConfig: Pool properties: maxActive=50, maxIdle=2, minIdle=1
2019-07-20 11:16:43,015 INFO  [JavaFX-Launcher] io.sonoc.reportes.jpa.config.JpaConfig: 15 hibernate properties loaded from file /proyecto-hibernate.properties
2019-07-20 11:16:43,196 WARN  [JavaFX-Launcher] org.hibernate.orm.deprecation: HHH020100: The Ehcache second-level cache provider for Hibernate is deprecated.  See https://hibernate.atlassian.net/browse/HHH-12441 for details.
2019-07-20 11:16:48,972 INFO  [JavaFX-Launcher] io.sonoc.reportes.jpa.config.JpaConfig: Created to LocalContainerEntityManagerFactoryBean: org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean@1577331
2019-07-20 11:16:48,981 WARN  [JavaFX-Launcher] org.hibernate.orm.deprecation: HHH020100: The Ehcache second-level cache provider for Hibernate is deprecated.  See https://hibernate.atlassian.net/browse/HHH-12441 for details.
2019-07-20 11:16:50,151 INFO  [JavaFX-Launcher] i.sonoc.reportes.gui.control.DialogLoginController: New DialogLoginController
2019-07-20 11:16:50,408 INFO  [JavaFX-Launcher] io.sonoc.reportes.gui.control.DialogLoginManager: New DialogLoginManager
2019-07-20 11:16:50,409 INFO  [JavaFX-Launcher] i.s.reportes.gui.control.DialogRememberController: New DialogRememberController
2019-07-20 11:16:50,411 INFO  [JavaFX-Launcher] io.sonoc.reportes.gui.control.PreloaderController: New PreloaderController
2019-07-20 11:16:50,415 INFO  [JavaFX-Launcher] io.sonoc.reportes.gui.control.WindowMainController: New WindowMainController
2019-07-20 11:16:50,417 INFO  [JavaFX-Launcher] io.sonoc.reportes.gui.control.WindowMainManager: New WindowMainManager
2019-07-20 11:16:50,431 INFO  [JavaFX-Launcher] io.sonoc.reportes.jpa.config.JpaConfig: Created to PlatformTransactionManager: org.springframework.orm.jpa.JpaTransactionManager@4064e2ac
2019-07-20 11:16:50,741 INFO  [JavaFX Application Thread] io.sonoc.reportes.gui.main.FXLauncher: Starting JavaFX with primaryStage on FXLauncher: javafx.stage.Stage@2447d339
2019-07-20 11:16:50,741 INFO  [JavaFX Application Thread] io.sonoc.reportes.gui.control.DialogLoginManager: New DialogLoginManager
2019-07-20 11:16:50,747 INFO  [JavaFX Application Thread] i.sonoc.reportes.gui.control.DialogLoginController: New DialogLoginController
Exception in thread "JavaFX Application Thread" java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
    at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1787)
    at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1670)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
    at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
    at javafx.event.Event.fireEvent(Event.java:198)
    at javafx.scene.Node.fireEvent(Node.java:8879)
    at javafx.scene.control.Button.fire(Button.java:200)
    at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:206)
    at com.sun.javafx.scene.control.inputmap.InputMap.handle(InputMap.java:274)
    at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
    at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
    at javafx.event.Event.fireEvent(Event.java:198)
    at javafx.scene.Scene$MouseHandler.process(Scene.java:3851)
    at javafx.scene.Scene$MouseHandler.access$1200(Scene.java:3579)
    at javafx.scene.Scene.processMouseEvent(Scene.java:1849)
    at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2588)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:397)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)
    at java.base/java.security.AccessController.doPrivileged(Native Method)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$2(GlassViewEventHandler.java:434)
    at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:390)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:433)
    at com.sun.glass.ui.View.handleMouseEvent(View.java:556)
    at com.sun.glass.ui.View.notifyMouse(View.java:942)
    at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
    at com.sun.glass.ui.gtk.GtkApplication.lambda$runLoop$11(GtkApplication.java:277)
    at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.reflect.InvocationTargetException
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at com.sun.javafx.reflect.Trampoline.invoke(MethodUtil.java:76)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at com.sun.javafx.reflect.MethodUtil.invoke(MethodUtil.java:273)
    at com.sun.javafx.fxml.MethodHelper.invoke(MethodHelper.java:83)
    at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1784)
    ... 47 more
Caused by: java.lang.NullPointerException
    at io.sonoc.reportes.gui.control.DialogLoginController.searchLogin(DialogLoginController.java:143)
    at io.sonoc.reportes.gui.control.DialogLoginController.onButtonAction(DialogLoginController.java:88)
    ... 59 more

您能提供一些启发吗？

spring eclipse maven javafx
1个回答
0
投票

使JFX和Spring集成应用程序在Eclipse上运行的解决方案遵循用户@Cristian link to comment，第2b部分的评论）。问题不是JFX和Spring上下文的集成，而是应用程序初始化的方式：“您的主应用程序不应扩展应用程序”：

public class AppLauncher { // I do not extend from Application.

public static void main(String[] args) {
    log.info("Starting Application: FXLauncher and FXPreloader");

    // Launches JavaFX with custom Preloader (https://blog.codecentric.de/en/2015/09/javafx-how-to-easily-implement-application-preloader-2/)
    LauncherImpl.launchApplication(FXLauncher.class, FXPreloader.class, args);
 }
}

这里，在启动Spring上下文和JFX应用程序的类中，我从Application扩展：

public class FXLauncher extends Application { // I extend from Application, this class is started in the previous main AppLauncher class
   // Variables
private ConfigurableApplicationContext springContext;

// Initializes variables before start() method
@Override
public void init() throws Exception {

    // Initializes Spring context with custom configuration
    log.info("Triying to load Spring Application Context.");

    try { // To avoid connection problems with external servers
        springContext = new AnnotationConfigApplicationContext(GuiConfig.class);
        springContext.getBean(GuiConfig.class);

        log.info("Is a static Spring context availabe?: {}", GuiConfig.getSpringContext());
    } catch (Exception e) {
        e.printStackTrace();
    }

    // Window loadings if necessary, here
      }

 // Starts JavaFX Main App
@Override
public void start(Stage primaryStage) throws Exception {
  ...
  }
}

希望有帮助！

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