Jackson将ISO8601格式的日期时间反序列化为Java8 Instant [英] Jackson deserialize ISO8601 formatted date-time into Java8 Instant

问题描述

我正在尝试使用Jackson将ISO8601格式的日期反序列化为Java8 java.time.Instant.我向ObjectMapper注册了JavaTimeModule，并关闭了WRITE_DATES_AS_TIMESTAMPS设置.

I'm trying to deserialize an ISO8601 formatted date into Java8 java.time.Instant using Jackson. I registered JavaTimeModule with the ObjectMapper, and turned off the WRITE_DATES_AS_TIMESTAMPS setting.

但是，如果尝试对2016-03-28T19:00:00.000+01:00进行反序列化，则它将无法正常工作，因为JavaTimeModule似乎只会对具有UTC时区偏移量格式的日期时间进行反序列化(例如，2016-03-28T18:00:00.000Z).然后，我尝试使用@JsonFormat注释，如下所示:

However, if one tries to deserialize 2016-03-28T19:00:00.000+01:00 it will not work, because it seems that JavaTimeModule will only deserialize date-times formatted with UTC timezone offset (e.g. 2016-03-28T18:00:00.000Z). I then tried using @JsonFormat annotation like this:

@JsonFormat(shape=JsonFormat.Shape.STRING, pattern="yyyy-MM-dd'T'HH:mm:ss.SSSZ", timezone = "UTC")

像这样:

@JsonFormat(shape=JsonFormat.Shape.STRING, pattern="yyyy-MM-dd'T'HH:mm:ss.SSSZ", timezone = JsonFormat.DEFAULT_TIMEZONE)

但是，这些都不起作用，我得到了一个例外:

However, neither of these work and I get an exception:

com.fasterxml.jackson.databind.JsonMappingException: Unsupported field: YearOfEra (through reference chain: org.example.Article["date"])

这意味着忽略时区参数，并且日期时间格式化程序不知道如何格式化不带时区的Instant.

Which implies that timezone parameter is ignored and date time formatter doesn't know how to format an Instant without a timezone.

是否有一种方法可以使用Jackson和JavaTimeModule对不在UTC时区偏移到Java 8 java.time.Instant的UTC时区中的ISO8601字符串进行反序列化，而无需编写自定义反序列化器?

Is there a way to deserialize a ISO8601 string that's not in UTC time zone offset to Java 8 java.time.Instant using Jackson and JavaTimeModule without writing a custom deserializer?

推荐答案

您需要通过modell类中的XXX设置显式时区:

You need to set the explicit time zone via XXX in your modell class:

@JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSXXX")

(请参阅: https://docs. oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html )

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