package net.loyin.util;
import java.lang.Character.UnicodeBlock;
public class UnicodeTool {
/**
* 中文转换成 unicode
* @author fanhui
* 2007-3-15
* @param inStr
* @return
*/
public String encodeUnicode(String inStr) {
char[] myBuffer = inStr.toCharArray();
StringBuffer sb = new StringBuffer();
for (int i = 0; i < inStr.length(); i++) {
char ch=myBuffer[i];
if((int)ch<10){
sb.append("\\u000"+(int)ch);
continue;
}
UnicodeBlock ub = UnicodeBlock.of(ch);
if(ub == UnicodeBlock.BASIC_LATIN){
//英文及数字等
sb.append(myBuffer[i]);
}else if(ub == UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS){
//全角半角字符
int j = (int) myBuffer[i] - 65248;
sb.append((char)j);
}else{
//汉字
int s = (int) myBuffer[i];
String hexS = Integer.toHexString(Math.abs(s));
String unicode = "\\u"+hexS;
sb.append(unicode.toLowerCase());
}
}
return sb.toString();
}
/**
* unicode 转换成 中文
* @author fanhui
* 2007-3-15
* @param theString
* @return
*/
public 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();
}
public static void main(String[] args){
System.out.print(new UnicodeTool().decodeUnicode("\u7fc1\u6d77\u6e05"));
}
}