Java MySQL日期时间和joda时间之间的差异

Mysql日期时间如下：2015-05-01 21:36:38.0

和joda当前时间：

DateTime now = new DateTime().toDateTime();
outputs
2015-05-01T22:08:15.705+02:00

---

如何计算这两个日期2015-05-01 21:36:38.0和2015-05-01T22:08:15.705+02:00之间的差异（以分钟为单位）

您需要为MySQL时间戳创建DateTimeFormatter。以下是一个例子：

     DateTimeFormatter formatter = DateTimeFormat.forPattern("YYYY-MM-dd HH:mm:ss.S");
    String mysqldatetime = "2015-05-01 21:36:38.0";
    DateTime mysqldt = formatter.parseDateTime(mysqldatetime); 

    DateTime now = new DateTime().toDateTime();
    Period diff = new Period(now,mysqldt);
    System.out.println(diff.getMinutes());

---

因为您没有指定字符串时间的时区，假设UTC

public static void main(String[] args) {

        String columnData = "2015-05-01 11:36:38.0";

        DateTimeFormatter fmt = DateTimeFormat.forPattern("yyyy-MM-dd HH:mm:ss.S");
        DateTime dateTime = fmt.withZoneUTC().parseDateTime(columnData);
        System.out.println("UTC Time: "+dateTime);

        DateTime now = DateTime.now();
        int mins = Minutes.minutesBetween(dateTime, now).getMinutes();
        System.out.println("Minutes : "+mins);

    }

输出：

UTC Time: 2015-05-01T11:36:38.000Z
Current Time 2015-05-01T16:21:41.404-04:00
Minutes : 525

试试这个：

Timestamp _before = (Timestamp) MySQLString.getTime();
Timestamp _now = new Timestamp(new DateTime().getMillis());
System.out.println("CONVERT RESULT MINUTES: "+minutesBetweenTimestamps(_before, _now));

//Pass the variables to this method 

public Integer minutesBetweenTimestamps(Timestamp before, Timestamp after){
    long _timeGap = after.getTime() - before.getTime();
    return (int) (_timeGap / 1000 / 60);
}

---

无需考虑两个日期时间瞬间的字符串表示形式。假设您正在从列timestamp_col查询数据库中的值，您只需执行以下操作：

ResultSet rs = myStatement.executeQuery();

if (rs.next()) {
    Timestamp databaseTime = rs.getTimestamp("timestamp_col");
    int minutesInBetween = Minutes.minutesBetween(
            new DateTime(databaseTime),
            DateTime.now()).getMinutes();
    // ...
}

---

如果您的数据库位于与JVM不同的时区，那么您需要在日历中将正确的db时区传递给rs.getTimestamp。

只需将两者作为时间戳长值进行读取和比较，例如：Timestamp ts=new Timestamp now.getmilliss；MySQL日期值的格式是java.sql.TimeStamp吗？@MadProgrammer是的，当创建表时，它是一个时间戳

ResultSet rs = myStatement.executeQuery();

if (rs.next()) {
    Timestamp databaseTime = rs.getTimestamp("timestamp_col");
    int minutesInBetween = Minutes.minutesBetween(
            new DateTime(databaseTime),
            DateTime.now()).getMinutes();
    // ...
}