Java Hex 16 진수 의 byte String 변환 클래스

package mobi.dzs.android.util;

import java.util.Locale;

/**
 * 16    String/Byte     
 * @author JerryLi
 * @email [email protected]
 * @data 2011-10-16
 * */
public class CHexConver
{
	private final static char[] mChars = "0123456789ABCDEF".toCharArray();
	private final static String mHexStr = "0123456789ABCDEF";  
	/** 
	 *   16         
	 * @param sHex String 16     
	 * @return boolean
	 */  
	public static boolean checkHexStr(String sHex){  
    	String sTmp = sHex.toString().trim().replace(" ", "").toUpperCase(Locale.US);
    	int iLen = sTmp.length();
    	
    	if (iLen > 1 && iLen%2 == 0){
    		for(int i=0; i> 4]);  
            sb.append(mChars[bs[i] & 0x0F]);
            sb.append(' ');
        }  
        return sb.toString().trim();  
    }
    
    /** 
     *            ASCII   
	 * @param str String Byte   
	 * @return String       
     */  
    public static String hexStr2Str(String hexStr){  
    	hexStr = hexStr.toString().trim().replace(" ", "").toUpperCase(Locale.US);
        char[] hexs = hexStr.toCharArray();  
        byte[] bytes = new byte[hexStr.length() / 2];  
        int iTmp = 0x00;;  

        for (int i = 0; i < bytes.length; i++){  
        	iTmp = mHexStr.indexOf(hexs[2 * i]) << 4;  
        	iTmp |= mHexStr.indexOf(hexs[2 * i + 1]);  
            bytes[i] = (byte) (iTmp & 0xFF);  
        }  
        return new String(bytes);  
    }
    
    /**
     * bytes          
     * @param b byte[] byte  
     * @param iLen int   N    N=iLen
     * @return String   Byte       
     */
	public static String byte2HexStr(byte[] b, int iLen){
        StringBuilder sb = new StringBuilder();
        for (int n=0; n> 4]);
        	sb.append(mChars[b[n] & 0x0F]);
            sb.append(' ');
        }
        return sb.toString().trim().toUpperCase(Locale.US);
    }
    
    /**
     * bytes      Byte 
     * @param src String Byte   ，  Byte       (    :0-9 A-F)
     * @return byte[]
     */
	public static byte[] hexStr2Bytes(String src){
    	/*           */
    	src = src.trim().replace(" ", "").toUpperCase(Locale.US);
    	//      
    	int m=0,n=0;
        int iLen=src.length()/2; //    
        byte[] ret = new byte[iLen]; //      
        
        for (int i = 0; i < iLen; i++){
            m=i*2+1;
            n=m+1;
            ret[i] = (byte)(Integer.decode("0x"+ src.substring(i*2, m) + src.substring(m,n)) & 0xFF);
        }
        return ret;
    }

    /**
     * String       unicode String
     * @param strText String      
     * @return String   unicode      
     * @throws Exception
     */
    public static String strToUnicode(String strText)
    	throws Exception
    {
        char c;
        StringBuilder str = new StringBuilder();
        int intAsc;
        String strHex;
        for (int i = 0; i < strText.length(); i++){
            c = strText.charAt(i);
            intAsc = (int) c;
            strHex = Integer.toHexString(intAsc);
            if (intAsc > 128)
            	str.append("\\u");
            else //       00
            	str.append("\\u00");
            str.append(strHex);
        }
        return str.toString();
    }
    
    /**
     * unicode String   String    
     * @param hex String 16       （  unicode 2byte）
     * @return String      
     * @see CHexConver.unicodeToString("\\u0068\\u0065\\u006c\\u006c\\u006f")
     */
    public static String unicodeToString(String hex){
        int t = hex.length() / 6;
        int iTmp = 0;
        StringBuilder str = new StringBuilder();
        for (int i = 0; i < t; i++){
            String s = hex.substring(i * 6, (i + 1) * 6);
            //  16   string  int
            iTmp = (Integer.valueOf(s.substring(2, 4), 16) << 8) | Integer.valueOf(s.substring(4), 16);
            //  int     
            str.append(new String(Character.toChars(iTmp)));
        }
        return str.toString();
    }
}