曹海成的专栏
http://blog.csdn.net/caohaicheng/article/details/38071097
http://blog.csdn.net/a5489888/article/details/8278301
http://blog.csdn.net/fmh2011/article/details/39205759
http://blog.csdn.net/caohaicheng/article/details/38116481
java nio
http://blog.csdn.net/sgbfblog/article/details/7905401