Ah, it not makes difference. I upgrade to 2.9.9 version, but the problem
still exists. Maybe I should create a issue :)
Thank you.
在 2019年6月1日星期六 UTC+8上午7:41:25，Tatu Saloranta写道：
>
> On Fri, May 31, 2019 at 3:29 PM 遗迹 <canpo...@gmail.com <javascript:>>
> wrote:
>
>> Hello,
>>
>> I create a deserializer for match corret subclass of abstract class.
>>
>> I register the deserializer for `InputMessageContent`.
>> But when I call `jp.getCodec().readTree<JsonNode>(jp)` in
>> `deserializer(JsonParser jp, DeserializationContext ctxt)`.
>> It return the parent element which contains `InputMessageContent`.
>>
>> But If I call jp.nextToken() before, it will works.
>>
>> It's says:
>>
>> input:
>> {"foo": {"a": "value", "b": "something"}}
>>
>> type define:
>> class Foo{
>> InputMessageContent foo;
>> }
>>
>> @JsonDeserialize(using = InputMessageContentDeserializer.class)
>> class InputMessageContent{
>> String a;
>> String b;
>> }
>>
>> Output:
>> jp.getCodes().readTree(jp).toString()=="{"foo": {"a": "value", "b": "
>> something"}}"
>> //I wish it should be "{"a": "value", "b": "something"}" <--- If I
>> call jp.nextToken() before.
>>
>>
>>
>> In fact, I'm use Kotlin for this.
>> The source code is long:
>> https://paste.ubuntu.com/p/X2qSNGSQGp/
>>
>>
> I agree: it should not be necessary to call `nextToken()` at that point.
>
> But instead of
>
> `jp.getCodec().readTree<JsonNode>(jp)`
>
> I would just call
>
> `jp.readValueAsTree()`
>
> Not sure if that makes a difference. Also make sure to use a new version
> of `jackson-databind` and `jackson-core`.
>
> I hope this helps,
>
> -+ Tatu +-
>
>
>
>
>
>
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