shell - 为什么linux下运行java会出现java.lang.NoClassDefFoundError？

Question

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如图，我已经在/root/lib目录下放了dom4j的包，而且也在CLASSPATH里面设置了/root/lib，但是运行我的java程序，总是提示找不到dom4j的SAXReader。

求解，谢谢！

Answer 1

I have encountered this problem before. The classpath is not the directory where the package is added, but the jar package. You need to add root/lib/xxx.jar to the end of the classpath