Intellij 突然抛出 ClassNotFoundException [英] Intellij suddenly throwing ClassNotFoundException

问题描述

我在这里完全不知所措.我在外部硬盘驱动器上有一个名为 LenseProject 的项目.在 LenseProject 中，我有 .idea、lib、Natives 和 SRC 文件夹.我还有一些文本文件可供阅读.

I'm at a complete loss here. I have a project on an external hard drive called LenseProject. Inside LenseProject, I have .idea, lib, Natives and SRC folders. I also have a number of text files for reading.

当我昨晚下班时，一切正常.今天早上来，我遇到了:

When I left work last night, this all worked fine. Coming in this morning, I'm met with:

Exception in thread "main" java.lang.ClassNotFoundException: QuadTest
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:188)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:113) 

QuadTest 是主类.

QuadTest being the main class.

我认为可能有用的信息:

Information that I think might be helpful:

• 如果我注释掉导入，我会收到相应的错误消息.(找不到符号等).

• If I comment out the imports, I get the appropriate error messages. (Cannot find symbol, etc).

我有 9 个依赖项，位于 liblwjgl-2.9.0jar 中，它们已设置在项目结构 -> 库中.

I have 9 dependencies, located in liblwjgl-2.9.0jar that are set up in Project Structure -> Libraries.

该模块以 LenseProject 作为内容根，SRC 作为源文件夹.

The module has LenseProject as the content root, and SRC as the source folder.

语言等级为7.0

我将依赖项设置为在项目结构 -> 模块中导出-> 依赖.

I have the dependencies set to export in Project Structure -> Modules -> Dependencies.

在编译器输出中，我将它设置为使用模块编译输出路径，因为继承项目编译输出路径给了我无法启动编译:未为模块指定输出路径镜头计划".在配置项目中指定输出路径.

In Compiler Output, I have it set to Use Module Compile Output Path, as Inherit Project Compile Output Path gave me "Cannot start compilation: The output path is not specified for module "LenseProject". Specify the output path in Configure Project.

我有虚拟机选项 -Djava.library.path=Natives.

我可以通过命令提示符编译和运行程序，没问题.

I can compile and run the program through command prompt no problem.

我今天早上启动时缺少配置选项.我不得不再次设置 SDK 和库.

I was missing my configure options when I started it up this morning. I had to set the SDK again, and libraries.

推荐答案

Open your Idea File --> Project Structure --> Modules ，然后选择有问题的模块，在Paths"选项卡中选择Use module compile输出路径.

Open your Idea File --> Project Structure --> Modules ，and then choose problematic module，in the "Paths" tab change selected to "Use module compile output path ".

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