转载一:http://blog.csdn.net/bripengandre/article/details/2192982
转载二:http://blog.csdn.net/flfna/article/details/5048290
转载三:http://www.cnblogs.com/dusthunter/archive/2013/02/03/2890678.html
MIME协议(详解范例)
原文：http://www.cnblogs.com/chechen/p/4440987.html
