JAvaタイムスタンプと日付文字列の相互変換
1787 ワード
/**
*
* @param seconds
* @param formatStr
* @return
*/
public static String timeStamp2Date(String seconds,String format) {
if(seconds == null || seconds.isEmpty() || seconds.equals("null")){
return "";
}
if(format == null || format.isEmpty()) format = "yyyy-MM-dd HH:mm:ss";
SimpleDateFormat sdf = new SimpleDateFormat(format);
return sdf.format(new Date(Long.valueOf(seconds+"000")));
}
/**
*
* @param date
* @param format :yyyy-MM-dd HH:mm:ss
* @return
*/
public static String date2TimeStamp(String date_str,String format){
try {
SimpleDateFormat sdf = new SimpleDateFormat(format);
return String.valueOf(sdf.parse(date_str).getTime()/1000);
} catch (Exception e) {
e.printStackTrace();
}
return "";
}
/**
* ( )
* @return
*/
public static String timeStamp(){
long time = System.currentTimeMillis();
String t = String.valueOf(time/1000);
return t;
}
// :
// timeStamp=1417792627
// date=2014-12-05 23:17:07
// 1417792627
public static void main(String[] args) {
String timeStamp = timeStamp();
System.out.println("timeStamp="+timeStamp);
String date = timeStamp2Date(timeStamp, "yyyy-MM-dd HH:mm:ss");
System.out.println("date="+date);
String timeStamp2 = date2TimeStamp(date, "yyyy-MM-dd HH:mm:ss");
System.out.println(timeStamp2);
}