public class Conversion {
/**
* 將字符串轉成unicode
*
* @param str
* 待轉字符串
* @return unicode字符串
*/
public String convert(String str) {
str = (str == null ? "" : str);
String tmp;
StringBuffer sb = new StringBuffer(1000);
char c;
int i, j;
sb.setLength(0);
for (i = 0; i < str.length(); i++) {
c = str.charAt(i);
sb.append("\\u");
j = (c >>> 8); // 取出高8位
tmp = Integer.toHexString(j);
if (tmp.length() == 1)
sb.append("0");
sb.append(tmp);
j = (c & 0xFF); // 取出低8位
tmp = Integer.toHexString(j);
if (tmp.length() == 1)
sb.append("0");
sb.append(tmp);
}
return (new String(sb));
}
/**
* 將unicode 字符串
*
* @param str
* 待轉字符串
* @return 普通字符串
*/
public String revert(String str) {
str = (str == null ? "" : str);
if (str.indexOf("\\u") == -1)// 如果不是unicode碼則原樣返回
return str;
StringBuffer sb = new StringBuffer(1000);
for (int i = 0; i < str.length() - 6;) {
String strTemp = str.substring(i, i + 6);
String value = strTemp.substring(2);
int c = 0;
for (int j = 0; j < value.length(); j++) {
char tempChar = value.charAt(j);
int t = 0;
switch (tempChar) {
case 'a':
t = 10;
break;
case 'b':
t = 11;
break;
case 'c':
t = 12;
break;
case 'd':
t = 13;
break;
case 'e':
t = 14;
break;
case 'f':
t = 15;
break;
default:
t = tempChar - 48;
break;
}
c += t * ((int) Math.pow(16, (value.length() - j - 1)));
}
sb.append((char) c);
i = i + 6;
}
return sb.toString();
}
public static void main(String args[]) {
// unicode轉中文
String str = "\u767b\u5f55\u793e\u533a";
Conversion con = new Conversion();
System.out.println(con.revert(str));
}
}