Java获取随机字符串

importjava.util.Random;

publicstaticStringgetRandomString(intlength)...{
StringBufferbuffer=newStringBuffer("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ");
StringBuffersb=newStringBuffer();
Randomr=newRandom();
intrange=buffer.length();
for(inti=0;i<length;i++)...{
sb.append(buffer.charAt(r.nextInt(range)));
}
returnsb.toString();
}