MIME

http://www1.huachu.com.cn/read/readbookinfo.asp?sectionid=1000000558

http://www.jb51.net/hack/10623.html

http://www.wps.cn/wpsapi/showapiart/pid-6180506616.htm

http://www.cnblogs.com/jsean/articles/1610265.html

http://www.cnblogs.com/skywang/articles/1485912.html