项目中用到了js的输出加快页面的加载速度，由于是国际化的编码，所以，输出到js文件中的字符需要转换成是Unicode编码的。有很多的方法，其中有使用native2ascii.exe的等等，但是殊不知，java里面本来就是类似的方法，大家想一下，我们的

java.util.properties这个类吧。。是不是有思路了呢？

我们提起其中的方法就ok了。
    private static final char[] hexDigit = { '0', '1', '2', '3', '4', '5', '6',         '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };     private static char toHex(int nibble) {         return hexDigit[(nibble & 0xF)];     }
       /*      * Converts unicodes to encoded \uxxxx and escapes      * special characters with a preceding slash      */     private String saveConvert(String theString, boolean escapeSpace) {         int len = theString.length();         int bufLen = len * 2;         if (bufLen < 0) {             bufLen = Integer.MAX_VALUE;         }         StringBuffer outBuffer = new StringBuffer(bufLen);         for(int x=0; x<len; x++) {             char aChar = theString.charAt(x);             // Handle common case first, selecting largest block that             // avoids the specials below             if ((aChar > 61) && (aChar < 127)) {                 if (aChar == '\\') {                     outBuffer.append('\\'); outBuffer.append('\\');                     continue;                 }                 outBuffer.append(aChar);                 continue;             }             switch(aChar) {                 case ' ':                       if (x == 0 || escapeSpace)                            outBuffer.append('\\');                       outBuffer.append(' ');                       break;                 case '\t':outBuffer.append('\\'); outBuffer.append('t');                           break;                 case '\n':outBuffer.append('\\'); outBuffer.append('n');                           break;                 case '\r':outBuffer.append('\\'); outBuffer.append('r');                           break;                 case '\f':outBuffer.append('\\'); outBuffer.append('f');                           break;                 case '=': // Fall through                 case ':': // Fall through                 case '#': // Fall through                 case '!':                     outBuffer.append('\\'); outBuffer.append(aChar);                     break;                 default:                     if ((aChar < 0x0020) || (aChar > 0x007e)) {                         outBuffer.append('\\');                         outBuffer.append('u');                         outBuffer.append(toHex((aChar >> 12) & 0xF));                         outBuffer.append(toHex((aChar >>  8) & 0xF));                         outBuffer.append(toHex((aChar >>  4) & 0xF));                         outBuffer.append(toHex( aChar        & 0xF));                     } else {                         outBuffer.append(aChar);                     }             }         }         return outBuffer.toString();
Properties.java 下载

作者：博爱老头@博爱老头的草屋
地址：http://www.icnote.com/Java-native-to-unicode/
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