用bytearray先把英文大小写字母、数字、符号判断出来,剩下的就是中文,然后再判断中文字属于什么编码,之后再分段
GBK>2字节
UTF8>3字节
这篇或许能够帮到你 http://www.360doc.com/content/09/0426/15/61497_3277348.shtml
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