Question

cygwin 运行 bin/nutch crawl urls -dir crawled -depth 3 -topN 50 >&crawl.log 出现下面问题

java.lang.NoClassDefFoundError: org/apache/nutch/crawl/Crawl
Caused by: java.lang.ClassNotFoundException: org.apache.nutch.crawl.Crawl
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
Could not find the main class: org.apache.nutch.crawl.Crawl. Program will exit.
Exception in thread "main"

Answer 1

Caused by: java.lang.ClassNotFoundException: org.apache.nutch.crawl.Crawl
这说明你的环境没有配置org.apache.nutch.crawl.Crawl
或者你下载了缺没有在系统的classpath上添加你存放nutch包的路径