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 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();
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; achar="" avoids="" belowif="" block="" case="" char="" common="" handle="" largest="" selecting="" specials="" that="" the=""> 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 throughcase ':': // Fall throughcase '#': // Fall throughcase '!':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 Properties.rar
