ZonedDateTime使用FasterXML Jackson序列化纪元毫秒

Question

I'm intended to use epoch millisecond for the deserialization and serialization. However only the deserialzation works but failed to serialize back to the correct ZonedDateTime .

ObjectMapper mapper = new ObjectMapper();
mapper.setTimeZone(TimeZone.getDefault());
mapper.registerModule(new JavaTimeModule());
mapper.configure(SerializationFeature.WRITE_DATE_TIMESTAMPS_AS_NANOSECONDS, false);

System.out.println(mapper.writeValueAsString(ZonedDateTime.now()));  // print 1493703996728 [Expected]
System.out.println(mapper.readValue("1493703996728", ZonedDateTime.class)); // print +49303-08-07T00:52:08+08:00[Asia/Singapore] [Unexpected]

how to make the serialize to get the date of 2017-05-02T13:46:36.728+08:00[Asia/Singapore] ?

version of com.fasterxml.jackson.* are all 2.8.8

Answer 1

您还需要禁用反序列化的纳秒来使Jackson解析毫秒：

mapper.configure(DeserializationFeature.READ_DATE_TIMESTAMPS_AS_NANOSECONDS, false);