unicode字符n 提交服务器请求中文字符乱码，需要进行编码转换

import??java.io.UnsupportedEncodingException;????

????

/**??

??*??转换字符串的编码??

??*/????

public??class??ChangeCharset??{????

??/**??7位ASCII字符，也叫作ISO646-US、Unicode字符集的基本拉丁块??*/????

??public??static??final??String??US_ASCII??=??"US-ASCII";????

????

??/**??ISO??拉丁字母表??No.1，也叫作??ISO-LATIN-1??*/????

??public??static??final??String??ISO_8859_1??=??"ISO-8859-1";????

????

??/**??8??位??UCS??转换格式??*/????

??public??static??final??String??UTF_8??=??"UTF-8";????

????

??/**??16??位??UCS??转换格式，Big??Endian（最低地址存放高位字节）字节顺序??*/????

??public??static??final??String??UTF_16BE??=??"UTF-16BE";????

????

??/**??16??位??UCS??转换格式，Little-endian（最高地址存放低位字节）字节顺序??*/????

??public??static??final??String??UTF_16LE??=??"UTF-16LE";????

????

??/**??16??位??UCS??转换格式，字节顺序由可选的字节顺序标记来标识??*/????

??public??static??final??String??UTF_16??=??"UTF-16";????

????

??/**??中文超大字符集??*/????

??public??static??final??String??GBK??=??"GBK";????

????

??/**??

????*??将字符编码转换成US-ASCII码??

????*/????

??public??String??toASCII(String??str)??throws??UnsupportedEncodingException{????

????return??this.changeCharset(str,??US_ASCII);????

??}????

??/**??

????*??将字符编码转换成ISO-8859-1码??

????*/????

??public??String??toISO_8859_1(String??str)??throws??UnsupportedEncodingException{????

????return??this.changeCharset(str,??ISO_8859_1);????

??}????

??/**??

????*??将字符编码转换成UTF-8码??

????*/????

??public??String??toUTF_8(String??str)??throws??UnsupportedEncodingException{????

????return??this.changeCharset(str,??UTF_8);????

??}????

??/**??

????*??将字符编码转换成UTF-16BE码??

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