java随机生成简体中文取指定长度随机简体中文实用方法

/**
* 获取指定长度随机简体中文
* @param len int
* @return String
*/
public static String getRandomJianHan(int len)
{
String ret="";
for(int i=0;i<len;i++){
String str = null;
int hightPos, lowPos; // 定义高低位
Random random = new Random();
hightPos = (176 + Math.abs(random.nextInt(39))); //获取高位值
lowPos = (161 + Math.abs(random.nextInt(93))); //获取低位值
byte[] b = new byte[2];
b[0] = (new Integer(hightPos).byteValue());
b[1] = (new Integer(lowPos).byteValue());
try
{
str = new String(b, "GBk"); //转成中文
}
catch (UnsupportedEncodingException ex)
{
ex.printStackTrace();
}
ret+=str;
}
return ret;
}

参考：http://hi.baidu.com/haozi0079/item/6131ea78e22f1d376e29f68e