Java 为什么我的bin目录中没有填充.class文件？
我在练习java，我注意到在我以前的项目中，我的bin目录有“something.java”文件的“镜像”。但现在，无论我做什么，它们似乎都没有出现。这是个问题吗？如果是，我应该如何解决这个问题？ 我的应用程序是一个gui应用程序。 我的pom.xml如下所示Java 为什么我的bin目录中没有填充.class文件？,java,directory,bin,.class-file,Java,Directory,Bin,.class File,我在练习java，我注意到在我以前的项目中，我的bin目录有“something.java”文件的“镜像”。但现在，无论我做什么，它们似乎都没有出现。这是个问题吗？如果是，我应该如何解决这个问题？ 我的应用程序是一个gui应用程序。 我的pom.xml如下所示 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-i
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>KisallatNyilvantartoRendszer</groupId>
<artifactId>KisallatNyilvantartoRendszer</artifactId>
<version>0.0.1-SNAPSHOT</version>
<properties>
<java.version>1.8</java.version>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<org.springframework.version>5.2.5.RELEASE</org.springframework.version>
</properties>
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.19</version>
</dependency>
</dependencies>
<build>
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
Exception in Application start method
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)
at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.launcher.LauncherHelper$FXHelper.main(Unknown Source)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$1(LauncherImpl.java:182)
at java.lang.Thread.run(Unknown Source)
Caused by: javafx.fxml.LoadException:
/C:/Users/M%c3%a1t%c3%a9/Desktop/Workspace/KisallatNyilvantartoRendszer/target/classes/KisallatNyilvantartoRendszer/allatok.fxml:16
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2579)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3214)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3175)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3148)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3124)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3104)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:3097)
at KisallatNyilvantartoRendszer.Main.start(Main.java:18)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$8(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$7(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$5(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$6(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$4(WinApplication.java:186)
... 1 more
Caused by: java.lang.IllegalArgumentException: Can not set javafx.scene.control.TableView field KisallatNyilvantartoRendszer.view.ViewController.allatView to javafx.scene.control.TableColumn
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(Unknown Source)
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(Unknown Source)
at sun.reflect.UnsafeObjectFieldAccessorImpl.set(Unknown Source)
at java.lang.reflect.Field.set(Unknown Source)
at javafx.fxml.FXMLLoader.injectFields(FXMLLoader.java:1163)
at javafx.fxml.FXMLLoader.access$1600(FXMLLoader.java:103)
at javafx.fxml.FXMLLoader$ValueElement.processValue(FXMLLoader.java:857)
at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:751)
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2707)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2527)
... 17 more
Exception running application KisallatNyilvantartoRendszer.Main
我还认为我的工作区乱七八糟，因为没有在bin/target文件夹中创建.class文件。这是个问题吗？我应该如何使其工作？您如何构建您的项目？我启动了一个简单的Java应用程序，并将其转换为Maven项目。这是一个问题吗？@Yasuo22这不是一个问题，但我们不知道，它不像“bin目录”或“Java应用程序”是一个标准的东西。因此，这取决于您的项目是如何构建的。请将您的问题包括在POM的相关部分中。例如，我的目标bin也不包含任何内容，因此我得到以下错误：由以下原因引起：java.lang.RuntimeException:com.sun.javafx.Application.LaunchImpl.launchApplication1（LaunchImpl.java:917）上的应用程序启动方法中的异常com.sun.javafx.application.launchempl.lambda$launchApplication$1（launchempl.java:182）java.lang.Thread.run（未知源）原因：javafx.fxml.LoadException:/C:/Users/M%c3%a1t%c3%a9/Desktop/Workspace/kisallatnyilvantartorrendszer/target/classes/kisallatnyilvantartorrendszer/allatok.fxml:16我很快就试着问了我所有的问题，我认为这比一个错误要复杂一些。也许我把我的工作空间搞砸了？
Exception in Application start method
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)
at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.launcher.LauncherHelper$FXHelper.main(Unknown Source)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$1(LauncherImpl.java:182)
at java.lang.Thread.run(Unknown Source)
Caused by: javafx.fxml.LoadException:
/C:/Users/M%c3%a1t%c3%a9/Desktop/Workspace/KisallatNyilvantartoRendszer/target/classes/KisallatNyilvantartoRendszer/allatok.fxml:16
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2579)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3214)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3175)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3148)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3124)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3104)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:3097)
at KisallatNyilvantartoRendszer.Main.start(Main.java:18)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$8(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$7(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$5(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$6(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$4(WinApplication.java:186)
... 1 more
Caused by: java.lang.IllegalArgumentException: Can not set javafx.scene.control.TableView field KisallatNyilvantartoRendszer.view.ViewController.allatView to javafx.scene.control.TableColumn
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(Unknown Source)
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(Unknown Source)
at sun.reflect.UnsafeObjectFieldAccessorImpl.set(Unknown Source)
at java.lang.reflect.Field.set(Unknown Source)
at javafx.fxml.FXMLLoader.injectFields(FXMLLoader.java:1163)
at javafx.fxml.FXMLLoader.access$1600(FXMLLoader.java:103)
at javafx.fxml.FXMLLoader$ValueElement.processValue(FXMLLoader.java:857)
at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:751)
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2707)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2527)
... 17 more
Exception running application KisallatNyilvantartoRendszer.Main