http://blog.csdn.net/leave00608/article/details/17442163
https://svn.apache.org/repos/asf/nutch/tags/release-2.2.1/
http://blog.csdn.net/hsb1132/article/details/8474308
http://find.searchhub.org/link?url=http://wiki.apache.org/nutch/RunNutchInEclipse
异常:http://blog.csdn.net/leave00608/article/details/17442163
编译异常