java - Java:如何将字符串(HH:MM:SS)转换为持续时间？

Question

我想将HH:MM:SS或MM:SS或SS格式的字符串转换为Duration的数据类型。

解:

    private ArrayList<Duration> myCdDuration = new ArrayList<Duration>();

        private void convert(String aDuration) {

            chooseNewDuration(stringToInt(splitDuration(aDuration))); //stringToInt() returns an int[] and splitDuration() returns a String[]
        }

        private void chooseNewDuration(int[] array) {
            int elements = array.length;
            switch (elements) {
            case 1:
                myCdDuration.add(newDuration(true, 0, 0, 0, 0, 0, array[0]));
                break;
            case 2:
                myCdDuration.add(newDuration(true, 0, 0, 0, 0, array[0], array[1]));
                break;
            case 3:
                myCdDuration.add(newDuration(true, 0, 0, 0, array[0], array[1],
                        array[2]));
                break;
            }
        }

感谢您的帮助...更简单的方法吗？ ->创建自己的Duration类:

public class Duration {
        private int intSongDuration;
        private String printSongDuration;

        public String getPrintSongDuration() {
            return printSongDuration;
        }

        public void setPrintSongDuration(int songDuration) {
            printSongDuration = intToStringDuration(songDuration);
        }

        public int getIntSongDuration() {
            return intSongDuration;
        }

        public void setIntSongDuration(int songDuration) {
            intSongDuration = songDuration;
        }

        public Duration(int songDuration) {

            setIntSongDuration(songDuration);
        }

将int值转换为输出/打印的字符串:

private String intToStringDuration(int aDuration) {
    String result = "";

    int hours = 0, minutes = 0, seconds = 0;

    hours = aDuration / 3600;
    minutes = (aDuration - hours * 3600) / 60;
    seconds = (aDuration - (hours * 3600 + minutes * 60));

    result = String.format("%02d:%02d:%02d", hours, minutes, seconds);
    return result;
}

Answer 1

您的myCdDuration令人困惑。您想要一个等效于字符串中指定的Duration对象，还是想要一个Duration对象列表，其中第一个包含小时数，第二个包含分钟数？

您不能只将String转换为其他对象。您应该将值解析为数字类型，然后使用 DataTypeFactory 构造Duration对象。