无法将字符串解析为Java 8 LocalDateTime [英] Unable to parse string into Java 8 LocalDateTime

问题描述

运行此命令会给我以下错误，我想念什么?

Running this gives me the following error, what am I missing ?

public static void main(String[] args) {

    DateTimeFormatter _timestampFomatGMT = DateTimeFormatter.ofPattern("yyyyMMddHHmmssSSS");
    LocalDateTime localDateTime = LocalDateTime.parse("20200331094118137",_timestampFomatGMT);
    System.out.println(localDateTime);     
}

给我以下异常.我想念什么?

Gives me the following exception. What am I missing ?

Exception in thread "main" java.time.format.DateTimeParseException: Text '20200331094118137' 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.time.LocalDateTime.parse(LocalDateTime.java:492)
        at cotown.lib.common.util.JavaTimeUtil.main(JavaTimeUtil.java:90)

推荐答案

Java不接受普通的Date值作为DateTime.

Java does not accept a plain Date value as DateTime.

尝试使用LocalDate，

Try using LocalDate,

public static void main(String[] args) {
DateTimeFormatter _timestampFomatGMT = DateTimeFormatter.ofPattern("yyyyMMdd");
LocalDate localDateTime = LocalDate.parse("20200331",_timestampFomatGMT);
System.out.println(localDateTime);
}

或者如果您确实需要使用LocalDateTime，请尝试

or if you really have to use LocalDateTime, then try

LocalDateTime time = LocalDate.parse("20200331", _timestampFomatGMT).atStartOfDay();

编辑

对此已经存在的错误 https://bugs.openjdk.java .net/browse/JDK-8031085 . 它在JDK 9中已修复.

there was a bug for this already raised https://bugs.openjdk.java.net/browse/JDK-8031085. It is fixed in JDK 9.

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