java中unicode和中文相互转换

package test.com.gjob.services;
import java.util.Properties;
public class Test {
public static void main(String[] args) {
String s = "简介";
String tt = gbEncoding(s);
// String tt1 = "你好，我想给你说一个事情";
System.out.println(decodeUnicode("\\u7b80\\u4ecb"));
// System.out.println(decodeUnicode(tt1));
System.out.println(HTMLDecoder.decode("中国"));
String s1 = "\u7b80\u4ecb";
System.out.println(s.indexOf("\\"));
}
public static String gbEncoding(final String gbString) {
char[] utfBytes = gbString.toCharArray();
String unicodeBytes = "";
for (int byteIndex = 0; byteIndex < utfBytes.length; byteIndex++) {
String hexB = Integer.toHexString(utfBytes[byteIndex]);
if (hexB.length() <= 2) {
hexB = "00" + hexB;
}
unicodeBytes = unicodeBytes + "\\u" + hexB;
}
System.out.println("unicodeBytes is: " + unicodeBytes);
return unicodeBytes;
} public static String decodeUnicode(final String dataStr) {
int start = 0;
int end = 0;
final StringBuffer buffer = new StringBuffer();
while (start > -1) {
end = dataStr.indexOf("\\u", start + 2);
String charStr = "";
if (end == -1) {
charStr = dataStr.substring(start + 2, dataStr.length());
} else {
charStr = dataStr.substring(start + 2, end);
}
char letter = (char) Integer.parseInt(charStr, 16); // 16进制parse整形字符串。
buffer.append(new Character(letter).toString());
start = end;
}
return buffer.toString();
}
}

public static String decodeUnicode(String theString) { char aChar; int len = theString.length(); StringBuffer outBuffer = new StringBuffer(len); for (int x = 0; x < len;) { aChar = theString.charAt(x++); if (aChar == '\\') { aChar = theString.charAt(x++); if (aChar == 'u') { // Read the xxxx int value = 0; for (int i = 0; i < 4; i++) { aChar = theString.charAt(x++); switch (aChar) { case '0': case '1': case '2': case '3': case '4': case '5': case '6':
case '7':
case '8':
case '9':
value = (value << 4) + aChar - '0';
break;
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
value = (value << 4) + 10 + aChar - 'a';
break;
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
value = (value << 4) + 10 + aChar - 'A';
break;
default:
throw new IllegalArgumentException(
"Malformed \\uxxxx encoding.");
} }
outBuffer.append((char) value);
} else {
if (aChar == 't')
aChar = '\t';
else if (aChar == 'r')
aChar = '\r'; else if (aChar == 'n') aChar = '\n'; else if (aChar == 'f') aChar = '\f'; outBuffer.append(aChar); } } else outBuffer.append(aChar); } return outBuffer.toString(); }