Java 8 LocalDate不会解析有效的日期字符串

Question

Java 8在这里.我有以下代码:

final String createdDateStr = "20110920";
final DateTimeFormatter formatter = DateTimeFormatter.ofPattern("YYYYMMdd");
final LocalDate localDate = LocalDate.parse(createdDateStr, formatter);

在运行时,我得到以下异常:

java.time.format.DateTimeParseException: Text '20110920' could not be parsed at index 0

    at java.time.format.DateTimeFormatter.parseResolved0(DateTimeFormatter.java:1949)
    at java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1851)
    at java.

......被LocalDate.parse(...)调用抛出 解析器出了什么问题？!

Answer 1

文档中的一个示例:

LocalDate date = LocalDate.now();
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy MM dd");
String text = date.format(formatter);
LocalDate parsedDate = LocalDate.parse(text, formatter);

你应该使用"yyyyMMdd"而不是"YYYYMMdd".这里提到了Y和之间的区别.y