JavaFX应用程序中应用程序启动方法出现异常

Question

乍一看，这个问题似乎是重复的。我已经在谷歌搜索了一些，但不幸的是，没有一个结果不符合我。我给出了下面的问题链接。

应用程序启动方法java.lang.Reflect.InvocationTargetException JavaFX图像转换中出现异常

JavaFX-应用程序启动方法中的异常？

应用程序启动方法中出现异常

堆栈跟踪：

Executing C:\Users\Dell-3460\Documents\NetBeansProjects\JavaFXApplication_Vocubulary_Own\dist\run151098339\JavaFXApplication_Vocubulary_Own.jar using platform C:\Program Files\Java\jdk1.8.0_102\jre/bin/java
Start1...........
Nov 23, 2017 10:30:52 PM javafx.fxml.FXMLLoader$ValueElement processValue
WARNING: Loading FXML document with JavaFX API of version 8.0.141 by JavaFX runtime of version 8.0.102
Nov 23, 2017 10:30:53 PM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@1d4f4e8e: startup date [Thu Nov 23 22:30:53 BDT 2017]; root of context hierarchy
Nov 23, 2017 10:30:53 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [vocubularyBean.xml]
Exception in Application start method

无法从此StackTrace跟踪错误。然后我在start方法中使用了Try-Catch，但没有确切的错误消息。

开始方法：

@Override
    public void start(Stage stage) throws Exception
        {
        System.out.println("Start1...........");
        try
          {
            Parent root = FXMLLoader.load(getClass().getResource("FXML_Main.fxml"));
            System.out.println("Start2...........");
            Scene scene = new Scene(root);
            stage.setScene(scene);
            stage.show();
          } 
        catch (Exception e)
            {
              e.printStackTrace();
            }
        }

Executing C:\Users\Dell-3460\Documents\NetBeansProjects\JavaFXApplication_Vocubulary_Own\dist\run151098339\JavaFXApplication_Vocubulary_Own.jar using platform C:\Program Files\Java\jdk1.8.0_102\jre/bin/java
Start1...........
Nov 23, 2017 10:30:52 PM javafx.fxml.FXMLLoader$ValueElement processValue
WARNING: Loading FXML document with JavaFX API of version 8.0.141 by JavaFX runtime of version 8.0.102
Nov 23, 2017 10:30:53 PM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@1d4f4e8e: startup date [Thu Nov 23 22:30:53 BDT 2017]; root of context hierarchy
Nov 23, 2017 10:30:53 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [vocubularyBean.xml]
Exception in Application start method

@FXML
    private void other_save_new_and_save_edit_other_word_button_action(ActionEvent actionEvent)
        {  
            bean_controller_Other_I.other_save_new_and_save_edit_other_word_button_action(actionEvent);
        }

 <Button layoutX="197.0" layoutY="32.0" mnemonicParsing="false" onAction="#other_save_new_and_save_edit_other_word_button_action" prefWidth="75.0" text="Save" AnchorPane.leftAnchor="197.0" />

已发现的问题：

public class ApplicationContextSingleTon
    {
        private static ApplicationContext applicationContext ;
        public static ApplicationContext getBean()
            {
                System.out.println(" AC_Line 1 : ");
                if(applicationContext == null)
                  {
                    System.out.println(" AC_Line 2 : ");
                    applicationContext = new ClassPathXmlApplicationContext("vocubularyBean.xml");
                    System.out.println(" AC_Line 3 : ");
                  }
                return applicationContext;
            }
    }



public interface ApplicationContext_I
    {
        ApplicationContext applicationContext = ApplicationContextSingleTon.getBean();
    }

public class Controller_Main implements Initializable,ApplicationContext_I
    {
    Controller_e2b_I bean_controller_e2b_I;
    Controller_e2e_I bean_controller_e2e_I;
    Controller_Other_I bean_controller_Other_I;

    @Override
    public void initialize(URL url, ResourceBundle rb)
        {
            bean_Initializer();
            System.out.println(".......Start........");
        }
    public void bean_Initializer()
        {
            bean_controller_e2b_I = (Controller_e2b_I) applicationContext.getBean("bean_Controller_e2b_Impl");
            bean_controller_e2b_I.setController_Main(this);

            bean_controller_e2e_I = (Controller_e2e_I) applicationContext.getBean("bean_Controller_e2e_Impl");
            bean_controller_e2e_I.setController_Main(this);

            bean_controller_Other_I = (Controller_Other_I) applicationContext.getBean("bean_Controller_Other_Impl");
            bean_controller_Other_I.setController_Main(this);
        }
//other codes
    }

<?xml version="1.0" encoding="UTF-8"?>
<beans  xmlns="http://www.springframework.org/schema/beans"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"
        >

    <bean id="bean_DAO_e2b_Impl" class="com.vocubulary.e2b.DAO_e2b_Impl" ></bean>
    <bean id="bean_Controller_e2b_Impl" class="com.vocubulary.e2b.Controller_e2b_Impl" >
        <property name="bean_DAO_e2b_I" ref="bean_DAO_e2b_Impl"/>
    </bean>

    <bean id="bean_DAO_e2e_Impl" class="com.vocubulary.e2e.DAO_e2e_Impl" ></bean>
    <bean id="bean_Controller_e2e_Impl" class="com.vocubulary.e2e.Controller_e2e_Impl" >
        <property name="bean_DAO_e2e_I" ref="bean_DAO_e2e_Impl"/>
    </bean>

    <!--start : problem Area-->
    <bean id="bean_DAO_Other_Impl" class="com.vocubulary.other.DAO_Other_Impl" ></bean>
    <bean id="bean_Controller_other_Impl" class="com.vocubulary.other.Controller_Other_Impl" >
        <property name="bean_DAO_Other_I" ref="bean_DAO_Other_Impl"/>
    </bean>
    <!--end : problem Area-->
</beans>

我认为没有必要描述代码，因为它们是自我解释的。我在xml映射文件中发现了一些xml代码的问题。我想我终于确定了问题所在。

如果我在xml映射文件中的问题区域内保持代码活动，那么问题正在发生。但如果我在评论这些台词，说明节目开始得很好。

那些台词有什么问题？

Answer 1

我只是勉强碰到了这个问题，不明白为什么例外是不打印。和你一样，我试着把我的整个开始方法围在一个试抓中。结果是STDERR没有被送到正确的位置。我发现这一点的方法是使用try-catch（再次）包围，并使用system.out.println(ex)而不是ex.printStackTrace()。还可以使用ex.printstacktrace(System.out)。

我想我迟到了，但希望我能帮助任何可能遇到同样问题的人。