package?DXFJIEXI;
import?java.io.UnsupportedEncodingException;

/**??*?轉(zhuǎn)換字符串的編碼??*/?
public?class?ChangeCharset?{??
/**?7位ASCII字符，也叫作ISO646-US、Unicode字符集的基本拉丁塊?*/?
	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?轉(zhuǎn)換格式?*/??
	public?static?final?String?UTF_8?=?“UTF-8“;??
	/**?16?位?UCS?轉(zhuǎn)換格式，Big?Endian（最低地址存放高位字節(jié)）字節(jié)順序?*/?
	public?static?final?String?UTF_16BE?=?“UTF-16BE“;??
	/**?16?位?UCS?轉(zhuǎn)換格式，Little-endian（最高地址存放低位字節(jié)）字節(jié)順序?*/?
	public?static?final?String?UTF_16LE?=?“UTF-16LE“;?
	/**?16?位?UCS?轉(zhuǎn)換格式，字節(jié)順序由可選的字節(jié)順序標記來標識?*/?
	public?static?final?String?UTF_16?=?“UTF-16“;?
	/**?中文超大字符集?*/?
	public?static?final?String?GBK?=?“GBK“;

?/**???*?將字符編碼轉(zhuǎn)換成US-ASCII碼???*/?
public?String?toASCII（String?str）?throws?UnsupportedEncodingException
{?return?this.changeCharset（str?US_ASCII）;??}?
/**???*?將字符編碼轉(zhuǎn)換成ISO-8859-1碼???*/?
public?String?toISO_8859_1（String?str）?throws?UnsupportedEncodingException
{???return?this.changeCharset（str?ISO_8859_1）;??}?
/**???*?將字符編碼轉(zhuǎn)換成UTF-8碼???*/??
public?String?toUTF_8（String?str）?throws?UnsupportedEncodingException
{???return?this.changeCharset（str?UTF_8）;??}?
/**???*?將字符編碼轉(zhuǎn)換成UTF-16BE碼???*/??
public?String?toUTF_16BE（String?str）?throws?UnsupportedEncodingException
{???return?this.changeCharset（str?UTF_16BE）;??}??
/**???*?將字符編碼轉(zhuǎn)換成UTF-16LE碼???*/??
public?String?toUTF_16LE（String?str）?throws?UnsupportedEncodingException
{???return?this.changeCharset（str?UTF_16LE）;??}?
/**???*?將字符編碼轉(zhuǎn)換成UTF-16碼???*/?
public?String?toUTF_16（String?str）?throws?UnsupportedEncodingException
{???return?this.changeCharset（str?UTF_16）;??}?
/**???*?將字符編碼轉(zhuǎn)換成GBK碼???*/??
public?String?toGBK（String?str）?throws?UnsupportedEncodingException
{???return?this.changeCharset（str?GBK）;??}?
/**???*?字符串編碼轉(zhuǎn)換的實現(xiàn)方法???*?@param?str??待轉(zhuǎn)換編碼的字符串???*?@param?newCharset?目標編碼???*?@return???*?@throws?UnsupportedEncodingException???*/
public?String?changeCharset（String?str?String?newCharset）throws?UnsupportedEncodingException?
{??if?（str?!=?null）?
??{?
	//用默認字符編碼解碼字符串。???
	byte[]?bs?=?str.getBytes（）;??
	//用新的字符編碼生成字符串?
	return?new?String（bs?newCharset）;???}?
???return?null;??}?
/**???*?字符串編碼轉(zhuǎn)換的實現(xiàn)方法???*?@param?str??待轉(zhuǎn)換編碼的字符串???*?@param?oldCharset?原編碼???*?@param?newCharset?目標編碼???*?@return???*?@throws?UnsupportedEncodingException???*/?
public?String?changeCharset（String?str?String?oldCharset?String?newCharset）throws?UnsupportedEncodingException?
{???if?（str?!=?null）?{??
	//用舊的字符編碼解碼字符串。解碼可能會出現(xiàn)異常。???
	byte[]?bs?=?str.getBytes（oldCharset）;???
	//用新的字符編碼生成字符串???
	return?new?String（bs?newCharset）;???}??
???return?null;??}

?/*public?static?void?main（String[]?args）?throws?UnsupportedEncodingException
?{???ChangeCharset?test?=?new?ChangeCharset（）;???
?????String?str?=?“This?is?a?中文的?String!“;???
?????System.out.println（“str:?“?+?str）;???
?????String?gbk?=?test.toGBK（str）;??
?????System.out.println（“轉(zhuǎn)換成GBK碼:?“?+?gbk）;??
???

?屬性????????????大小?????日期????時間???名稱
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?????目錄??????????0??2009-12-04?13:27??DEFJAVA2

?????文件????????232??2009-11-26?16:19??DEFJAVA2\.classpath

?????文件????????383??2009-11-26?16:19??DEFJAVA2\.project

?????目錄??????????0??2009-12-04?13:27??DEFJAVA2\bin

?????目錄??????????0??2009-12-04?13:27??DEFJAVA2\bin\DXFJIEXI

?????文件???????1944??2009-12-01?15:50??DEFJAVA2\bin\DXFJIEXI\ChangeCharset.class

?????文件???????5203??2009-12-04?13:23??DEFJAVA2\bin\DXFJIEXI\JIEXI.class

?????目錄??????????0??2009-12-04?13:27??DEFJAVA2\src

?????目錄??????????0??2009-12-04?13:27??DEFJAVA2\src\DXFJIEXI

?????文件???????5113??2009-12-01?15:50??DEFJAVA2\src\DXFJIEXI\ChangeCharset.java

?????文件???????7388??2009-12-04?13:23??DEFJAVA2\src\DXFJIEXI\JIEXI.java

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