javagbk转机内码_Java实现的UTF8，GBK，Unicode编码相互转换的代码

java实现UTF-8&＃xff0c;GBK&＃xff0c;Unicode编码相互转换&＃xff0c;代码如下&＃xff1a;

public class UTF2GBK {

public String gbk2utf8(String gbk) {

String l_temp &＃61; GBK2Unicode(gbk);

l_temp &＃61; unicodeToUtf8(l_temp);

return l_temp;

}

public String utf82gbk(String utf) {

String l_temp &＃61; utf8ToUnicode(utf);

l_temp &＃61; Unicode2GBK(l_temp);

return l_temp;

}

/**

*

* &＃64;param str

* &＃64;return String

*/

public static String GBK2Unicode(String str) {

StringBuffer result &＃61; new StringBuffer();

for (int i &＃61; 0; i

char chr1 &＃61; (char) str.charAt(i);

if (!isNeedConvert(chr1)) {

result.append(chr1);

continue;

}

result.append("\\u" &＃43; Integer.toHexString((int) chr1));

}

return result.toString();

}

/**

*

* &＃64;param dataStr

* &＃64;return String

*/

public static String Unicode2GBK(String dataStr) {

int index &＃61; 0;

StringBuffer buffer &＃61; new StringBuffer();

int li_len &＃61; dataStr.length();

while (index

if (index >&＃61; li_len - 1

|| !"\\u".equals(dataStr.substring(index, index &＃43; 2))) {

buffer.append(dataStr.charAt(index));

index&＃43;&＃43;;

continue;

}

String charStr &＃61; "";

charStr &＃61; dataStr.substring(index &＃43; 2, index &＃43; 6);

char letter &＃61; (char) Integer.parseInt(charStr, 16);

buffer.append(letter);

index &＃43;&＃61; 6;

}

return buffer.toString();

}

public static boolean isNeedConvert(char para) {

return ((para & (0x00FF)) !&＃61; para);

}

/**

* utf-8 转unicode

*

* &＃64;param inStr

* &＃64;return String

*/

public static String utf8ToUnicode(String inStr) {

char[] myBuffer &＃61; inStr.toCharArray();

StringBuffer sb &＃61; new StringBuffer();

for (int i &＃61; 0; i

UnicodeBlock ub &＃61; UnicodeBlock.of(myBuffer[i]);

if (ub &＃61;&＃61; UnicodeBlock.BASIC_LATIN) {

sb.append(myBuffer[i]);

} else if (ub &＃61;&＃61; UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS) {

int j &＃61; (int) myBuffer[i] - 65248;

sb.append((char) j);

} else {

short s &＃61; (short) myBuffer[i];

String hexS &＃61; Integer.toHexString(s);

String unicode &＃61; "\\u" &＃43; hexS;

sb.append(unicode.toLowerCase());

}

}

return sb.toString();

}

/**

*

* &＃64;param theString

* &＃64;return String

*/

public static String unicodeToUtf8(String theString) {

char aChar;

int len &＃61; theString.length();

StringBuffer outBuffer &＃61; new StringBuffer(len);

for (int x &＃61; 0; x

aChar &＃61; theString.charAt(x&＃43;&＃43;);

if (aChar &＃61;&＃61; &＃39;\\&＃39;) {

aChar &＃61; theString.charAt(x&＃43;&＃43;);

if (aChar &＃61;&＃61; &＃39;u&＃39;) {

// Read the xxxx

int value &＃61; 0;

for (int i &＃61; 0; i <4; i&＃43;&＃43;) {

aChar &＃61; theString.charAt(x&＃43;&＃43;);

switch (aChar) {

case &＃39;0&＃39;:

case &＃39;1&＃39;:

case &＃39;2&＃39;:

case &＃39;3&＃39;:

case &＃39;4&＃39;:

case &＃39;5&＃39;:

case &＃39;6&＃39;:

case &＃39;7&＃39;:

case &＃39;8&＃39;:

case &＃39;9&＃39;:

value &＃61; (value <<4) &＃43; aChar - &＃39;0&＃39;;

break;

case &＃39;a&＃39;:

case &＃39;b&＃39;:

case &＃39;c&＃39;:

case &＃39;d&＃39;:

case &＃39;e&＃39;:

case &＃39;f&＃39;:

value &＃61; (value <<4) &＃43; 10 &＃43; aChar - &＃39;a&＃39;;

break;

case &＃39;A&＃39;:

case &＃39;B&＃39;:

case &＃39;C&＃39;:

case &＃39;D&＃39;:

case &＃39;E&＃39;:

case &＃39;F&＃39;:

value &＃61; (value <<4) &＃43; 10 &＃43; aChar - &＃39;A&＃39;;

break;

default:

throw new IllegalArgumentException(

"Malformed \\uxxxx encoding.");

}

}

outBuffer.append((char) value);

} else {

if (aChar &＃61;&＃61; &＃39;t&＃39;)

aChar &＃61; &＃39;\t&＃39;;

else if (aChar &＃61;&＃61; &＃39;r&＃39;)

aChar &＃61; &＃39;\r&＃39;;

else if (aChar &＃61;&＃61; &＃39;n&＃39;)

aChar &＃61; &＃39;\n&＃39;;

else if (aChar &＃61;&＃61; &＃39;f&＃39;)

aChar &＃61; &＃39;\f&＃39;;

outBuffer.append(aChar);

}

} else

outBuffer.append(aChar);

}

return outBuffer.toString();

}

}