Java获取随机字符串

import java.util.Random;

public static StringgetRandomString( int length) ... {
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();
}

仅供自己参考，代码写一遍，以后到哪里都能用。呵呵。。。