有时候想想，网上关于这方面的资料很多，我就不必再写这方面的东西了，可是又想，我遇到的问题，还是要google，baidu很久，所以，我决定把我遇到的问题整理一下，以供大家参考。-Sometimes think, online information on this lot, I do not have to write this stuff, but thought, my problems, or to google, baidu for a long time, so I decided to put my experience sort out the problem, for your reference.