Question

我正在尝试编译一个开源software。构建工作正常，并导致jar文件“five-server.jar”。当我尝试从cmd运行此文件时，我收到了这些错误。

C:\Users\vickey\code\five-server\dist\main>java -jar five-server.jar
Exception in thread "main" java.lang.NoClassDefFoundError: org/eclipse/swt/SWTError
Caused by: java.lang.ClassNotFoundException: org.eclipse.swt.SWTError
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
Could not find the main class: org.devtcg.five.Main. Program will exit.

任何建议有什么问题？

Answer 1

SWT Jar文件取决于平台。见http://www.jarfinder.com/index.php/java/info/org.eclipse.swt.SWTError

e.g。在Windows上，一个合适的jar将是： org.eclipse.swt.win32.win32.x86_3.1.0.jar

或在Mac OS X上： SWT-MacOSX的-3.0m7.jar

等等。如果添加此依赖项，可能会遇到调用各种后续问题，例如：不管你是不是使用32位或64位库。

这些依赖性问题现在出现的次数太多了，这太糟糕了： - （

Answer 2

您必须设置类路径，使其至少包含类org.eclipse.swt.SWTError 或包含它的罐子：

java -classpath path/to/jar/containing/org.eclipse.swt.SWTError -jar five-server.jar

您还应该在five-server.jar

中的清单文件中设置Main-class属性

Answer 3

Following the @Wolfgang Fahl answer, you might download the references here:

Standard Widget Toolkit » 4.3 x86

Maven reference: https://mvnrepository.com/artifact/org.eclipse.swt.org.eclipse.swt.win32.win32.x86.4.3.swt/org.eclipse.swt.win32.win32.x86/4.3

Jar file: http://central.maven.org/maven2/org/eclipse/swt/org/eclipse/swt/win32/win32/x86_64/4/3/swt/org.eclipse.swt.win32.win32.x86_64/4.3/org.eclipse.swt.win32.win32.x86_64-4.3.jar

Standard Widget Toolkit » 4.3 x64

Maven reference: https://mvnrepository.com/artifact/org.eclipse.swt.org.eclipse.swt.win32.win32.x86_64.4.3.swt/org.eclipse.swt.win32.win32.x86_64/4.3

Jar file: http://central.maven.org/maven2/org/eclipse/swt/org/eclipse/swt/win32/win32/x86_64/4/3/swt/org.eclipse.swt.win32.win32.x86_64/4.3/org.eclipse.swt.win32.win32.x86_64-4.3.jar

NoClassDefFoundError org / eclipse / swt / SWTError

3 个答案: