LocalDate中季度的使用

季度字符串转LocalDate

// 方式一
DateTimeFormatterBuilder builder = new DateTimeFormatterBuilder();
DateTimeFormatter formatter = builder.appendValue(ChronoField.YEAR_OF_ERA, 4, 10, SignStyle.EXCEEDS_PAD)
    .appendLiteral("-Q")
    .appendValue(IsoFields.QUARTER_OF_YEAR, 1)
    .appendLiteral("-")
    .appendValue(IsoFields.DAY_OF_QUARTER,2)
    .toFormatter(Locale.CHINA);
LocalDate parse = LocalDate.parse("2023-Q2-73", formatter);
System.out.println("parse = " + parse); //parse = 2023-06-12

// 方式二
String s = "2023-Q2";
LocalDate start = LocalDate.of(
        Integer.parseInt(s.substring(0, 4)),
        Integer.parseInt(s.charAt(6)+"") * 3 - 2, 1);
LocalDate end = LocalDate.of(
        Integer.parseInt(s.substring(0, 4)), Integer.parseInt(s.charAt(6)+"") * 3, 1)
        .with(TemporalAdjusters.lastDayOfMonth());
System.out.println("start = " + start + "; end = " + end); // start = 2023-04-01; end = 2023-06-30

LocalDate转为季度字符串

//方式一
DateTimeFormatterBuilder builder = new DateTimeFormatterBuilder();
DateTimeFormatter formatter = builder.appendValue(ChronoField.YEAR_OF_ERA, 4, 10, SignStyle.EXCEEDS_PAD)
    .appendLiteral("-Q")
    .appendValue(IsoFields.QUARTER_OF_YEAR, 1)
    .toFormatter(Locale.CHINA);
String format = LocalDate.now().format(formatter);
System.out.println("format = " + format); // format = 2023-Q2

//方式二
DateTimeFormatter pattern = DateTimeFormatter.ofPattern("yyyy-qq");
        String format1 = LocalDate.now().format(pattern);
        System.out.println("format = " + format); // format = 2023-02

//方式三
DateTimeFormatter pattern = DateTimeFormatter.ofPattern("yyyy-qqq");
String format = LocalDate.now().format(pattern);
System.out.println("format = " + format); //format = 2023-2季度

//方式四
DateTimeFormatter pattern = DateTimeFormatter.ofPattern("yyyy-qqqq");
String format = LocalDate.now().format(pattern);
System.out.println("format = " + format); //format = 2023-第二季度

//方式五
DateTimeFormatter formatter = builder.appendValue(ChronoField.YEAR_OF_ERA, 4, 10, SignStyle.EXCEEDS_PAD)
        .appendLiteral("-Q")
        .appendValue(IsoFields.QUARTER_OF_YEAR, 1)
        .appendLiteral("-")
        .appendValue(IsoFields.DAY_OF_QUARTER,2)
        .toFormatter(Locale.CHINA);
String format = LocalDate.now().format(formatter);
System.out.println("format = " + format); //format = 2023-Q2-73 二季度第73天