byte数组和String之间的转化

byte数组转化为String：

byte
[]  bMsg = {xx, xx, xx, ……};    
//假设编码方式为"UTF-8"

String  str = 
new
 String(bMsg, 
"UTF-8"
);

String转化为byte数组:

String str = 
"123"
;

byte
[]  bMsg = str.getBytes(
"UTF-8"
);  
//假设编码方式为"UTF-8"