Christophe Roussy :
import com.fasterxml.jackson.databind.util.ISO8601DateFormat;
objectMapper.setDateFormat(new ISO8601DateFormat());
Nice but this ignores milliseconds, how can I get them in the dates without using the non-thread-safe SimpleDateFormatter?
user7605325 :
ISO8601DateFormat.format calls ISO8601Utils.format(date), which in turn calls format(date, false, TIMEZONE_Z) - the false parameter tells jackson to don't include the milliseconds.
There seems to be no way to configure this class nor set any parameter, but fortunately it can be extended:
public class ISO8601WithMillisFormat extends ISO8601DateFormat {
@Override
public StringBuffer format(Date date, StringBuffer toAppendTo, FieldPosition fieldPosition) {
String value = ISO8601Utils.format(date, true); // "true" to include milliseconds
toAppendTo.append(value);
return toAppendTo;
}
}
Then we can use this new class in the object mapper:
ObjectMapper objectMapper = new ObjectMapper();
ISO8601DateFormat dateFormat = new ISO8601WithMillisFormat();
objectMapper.setDateFormat(dateFormat);
I've made a test with new Date() and the result was 2017-07-24T12:14:26.817Z (with the milliseconds).
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