src2011-

简单上位机软件

public class Util { 
public Util() { 
} 
/*public static void main(String[] arg){
	System.out.println("16-string");
	// s,ss;
	String s,args;
	byte [] s16;
	for(int i=10;i>0;i--){
		System.out.println("____________string to 16_______________");
		s=SavitchIn.readLine();
		s16=HexString2Bytes(s);
		printHexString(s,s16);
		System.out.println("____________16 to string_______________");
		args=Bytes2HexString(s16);
		printHexString(args,s16);
		System.out.println("____________next circle _______________");
	
	}
}*/
/** 
* 将指定byte数组以16进制的形式打印到控制台 
* @param hint String 
* @param b byte[] 
* @return void 
*/ 
public static void printHexString(String hint, byte[] b) { 
System.out.print(hint); 
for (int i = 0; i < b.length; i++) { 
String hex = Integer.toHexString(b[i] & 0xFF); 
if (hex.length() == 1) { 
hex = '0' + hex; 
} 
System.out.print(hex.toUpperCase() + " "); 
} 
System.out.println(""); 
} 

/** 
* 
* @param b byte[] 
* @return String 
*/ 
public static String Bytes2HexString(byte[] b) { 
String ret = ""; 
for (int i = 0; i < b.length; i++) { 
String hex = Integer.toHexString(b[i] & 0xFF); 
if (hex.length() == 1) { 
hex = '0' + hex; 
} 
ret += hex.toUpperCase(); 
} 
return ret; 
} 

/** 
* 将两个ASCII字符合成一个字节； 
* 如："EF"--> 0xEF 
* @param src0 byte 
* @param src1 byte 
* @return byte 
*/ 
public static byte uniteBytes(byte src0, byte src1) { 
byte _b0 = Byte.decode("0x" + new String(new byte[]{src0})).byteValue(); 
_b0 = (byte)(_b0 << 4); 
byte _b1 = Byte.decode("0x" + new String(new byte[]{src1})).byteValue(); 
byte ret = (byte)(_b0 ^ _b1); 
return ret; 
} 

/** 
* 将指定字符串src，以每两个字符分割转换为16进制形式 
* 如："2B44EFD9" --> byte[]{0x2B, 0x44, 0xEF, 0xD9} 
* @param src String 
* @return byte[] 
*/ 
public static byte[] HexString2Bytes(String src){
int len=src.length();
len=len/2;
if (len*2<src.length()){
	System.out.println("奇数个 无结果");
	return null;
}
byte[] ret = new byte[len]; 
byte[] tmp = src.getBytes(); 
for(int i=0; i<len; i=i+1){ 
ret[i] = uniteBytes(tmp[i*2], tmp[i*2+1]); 
} 
return ret; 
} 

}