/**
* 计数，通过位移后和整形变量相与得到结果
* 0000 0000 is a byte,so move 8 bytes add to new byte[]
* for example,001a 0001 the new byte[] is {001a,0001}
* @param byteLen
* @param a
* @return
*/
public byte[] moveBytes(int byteLen,long a){
byte[] moveTag=new byte[byteLen];
int j=0;
for (int i = byteLen-1; i >= 0; i--) {
//System.out.println("i="+i);
moveTag[i]=moveByte(a, 8*j);
// System.out.println("j="+j);
j=j+1;
}
return moveTag;
}
/**
* from byte[] which be convertCode to byte[] which be showAbleBytes
* byte[] length from length to length*2
* @param b
* @return
*/
public byte[] showBytes(byte[] b){
//String s = new String();
//char[] ch = new char[b.length*2];
byte[] newBytes = new byte[b.length*2];
byte[] oneBytes;
for (int i = 0; i < b.length; i++) {
oneBytes = hexToAsc(b[i]);
newBytes[i*2]=oneBytes[0];
//ch[i*2]=(char)(oneBytes[0]&0xff);
newBytes[i*2+1]=oneBytes[1];
//ch[i*2+1]=(char)(oneBytes[1]&0xff);
}
return newBytes;
}
/**
* new String() maybe cause charset exception,so use getStr to instead of it
* @param b
* @return
*/
public String getStr(byte[] b){
String ss = new String();
for(int i=0; i<b.length; i++)
{
ss =ss + (char)(b[i]&0xff);
}
return ss;
}
/**
* convert from String to ucs2,for exp:33你好 to 003300334F60597D
* @param s
* @return
*/
public String toUnicodeStr(String s){
StringBuilder unicodeStr = new StringBuilder();
for (int i = 0; i < s.length(); i++) {
//unicodeStr.append(new String(showBytes(moveBytes(2, s.charAt(i)))));
unicodeStr.append(getStr(showBytes(moveBytes(2, s.charAt(i)))));
}
return unicodeStr.toString();
}
/**
* for exp convert "4F60597D" to "你好"
* convert unicode to ascii
* @param ascii unicode String
* @return
*/
public String unicode2ascii(String ascii){
StringBuffer buffer = new StringBuffer();
for (int i = 0; i < ascii.length()/4; i++) {//unicode is 4 bytes
buffer.append(new Character((char) (Integer.parseInt(ascii.substring(4*i, 4*i+4), 16))));
}
return buffer.toString();
}