java把中文字符串转成Unicode.doc

这是我自己在用的一个工具类，把中文字符串转成Unicode，也能把Unicode转成中文字符，相当实用哦。代码如下：import java.io.UnsupportedEncodingException;public class strToUnicode public static void main(String args) throws UnsupportedEncodingException String s = 黄彪; System.out.println(Original: + s); /转成Unicode s = toEncodedUnicode(s, true); System.out.println(to unicode: + s); /再转回中文 s = fromEncodedUnicode(s.toCharArray(), 0, s.length(); System.out.println(from unicode: + s); 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); /* * 将字符串编码成 Unicode 形式的字符串. 如 黄 to u9EC4 * Converts unicodes to encoded uxxxx and escapes * special characters with a preceding slash * * param theString * 待转换成Unicode编码的字符串。 * param escapeSpace * 是否忽略空格，为true时在空格后面是否加个反斜杠。 * return 返回转换后Unicode编码的字符串。 */ public static String toEncodedUnicode(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 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 0x007e) / 每个unicode有16位，每四位对应的16进制从高位保存到低位 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(); /* * 从 Unicode 形式的字符串转换成对应的编码的特殊字符串。 如 u9EC4 to 黄. * Converts encoded uxxxx to unicode chars * and changes special saved chars to their original forms * * param in * Unicode编码的字符数组。 * param off * 转换的起始偏移量。 * param len * 转换的字符长度。 * param convtBuf * 转换的缓存字符数组。 * return 完成转换，返回编码前的特殊字符串。 */ public static String fromEncodedUnicode(char in, int off, int len) char aChar; char out = new charlen; / 只短不长 int outLen = 0; int end = off + len; while (off end) aChar = inoff+; if (aChar = ) aChar = inoff+; if (aChar = u) / Read the xxxx int value = 0; for (int i = 0; i 4; i+) aChar = inoff+; 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.); outoutLen+ = (char) value; else if (aChar = t) aChar = t; else if (aChar = r) aC