Java Unicode 解码，javaunicode解码,package util

Java Unicode 解码，javaunicode解码,package util

package util;import java.nio.ByteBuffer;import java.nio.charset.Charset;import java.util.regex.Matcher;import java.util.regex.Pattern;/** * @author tian * */public class CharSetUtil {    /**     * 解码 Unicode \\uXXXX     * @param str     * @return     */    public static String decodeUnicode(String str) {        Charset set = Charset.forName("UTF-16");        Pattern p = Pattern.compile("\\\\u([0-9a-fA-F]{4})");        Matcher m = p.matcher( str );        int start = 0 ;        int start2 = 0 ;        StringBuffer sb = new StringBuffer();        while( m.find( start ) ) {            start2 = m.start() ;            if( start2 > start ){                String seg = str.substring(start, start2) ;                sb.append( seg );            }            String code = m.group( 1 );            int i = Integer.valueOf( code , 16 );            byte[] bb = new byte[ 4 ] ;            bb[ 0 ] = (byte) ((i >> 8) & 0xFF );            bb[ 1 ] = (byte) ( i & 0xFF ) ;            ByteBuffer b = ByteBuffer.wrap(bb);            sb.append( String.valueOf( set.decode(b) ).trim() );            start = m.end() ;        }        start2 = str.length() ;        if( start2 > start ){            String seg = str.substring(start, start2) ;            sb.append( seg );        }        return sb.toString() ;    }    public static void main(String[] args) {        System.out.println( decodeUnicode("\\u5907abbbbbs\\u5907"));    }}