一、类功能：
copyright:emperor electric technology of ShenZhen author:tangyingzhong contact:[email protected] version:v1.0.0 date:2018/2/7
a.ASCII字符串转UTF8字符串
b.ASCII字符串转UNICODE字符串
c.UTF8字符串转ASCII字符串
d.UTF8字符串转UNICODE字符串
e.UNICODE字符串转UTF8字符串
f.UNICODE字符串转ASCII字符串
copyright:emperor electric technology of ShenZhen author:tangyingzhong contact:[email protected] version:v1.0.0 date:2018/2/7