时间格式的转换 生成指定长度的随机字符串


时间格式的转换

 SimpleDateFormat sdf2 = new SimpleDateFormat("yyyyMMddHHmmss");

 SimpleDateFormat sdf = new SimpleDateFormat("1991-02-21 18:10:10");

// SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

  Date date=new Date();

  String trandDate = sdf.format(date);

  System.out.println(trandDate);

  System.out.println(sdf);

//生成指定长度的随机字符串

 private static String getNonceStr(int length) {

  String str = "";

  String tmp = "0123456789abcdefghigklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";

  String [] tmpArry = tmp.split("");

  for(int i = 0; i < length; i++){

   Random ran = new Random();

   int local = ran.nextInt(tmpArry.length-1);

   str += tmpArry[local];

  }

  return str;