Tried with 2.8.9, same problem, but, I had an idea...
replacing the line
>public pojo(@JsonProperty(index = 0) int x, @JsonProperty(index = 1) int y)
with the line
>public pojo(@JsonProperty(index = 0, value = "d") int x,
@JsonProperty(index = 1, value = "e") int y)
made it work! Looks like there's a superfluous check in there somewhere. (I
even got a 'duplicate name' error when I used 'd' for both of them, heh).
On Tuesday, June 20, 2017 at 2:05:58 PM UTC-7, Bwmat wrote:
>
> I get an exception when running the following program with 2.6.2:
>
> import java.io.IOException;
>
> import com.fasterxml.jackson.annotation.JsonCreator;
> import com.fasterxml.jackson.annotation.JsonFormat;
> import com.fasterxml.jackson.annotation.JsonProperty;
> import com.fasterxml.jackson.core.JsonProcessingException;
> import com.fasterxml.jackson.databind.ObjectMapper;
>
> public class test
> {
> @JsonFormat(shape = JsonFormat.Shape.ARRAY)
> final static class pojo
> {
> private final int x;
> private final int y;
>
> @JsonCreator
> public pojo(@JsonProperty(index = 0) int x, @JsonProperty(index =
> 1) int y)
> {
> this.x = x;
> this.y = y;
> }
>
> @Override
> public String toString()
> {
> return String.format("(%d,%d)", x, y);
> }
> }
>
> public static void main(String[] args) throws JsonProcessingException,
> IOException
> {
> ObjectMapper mapper = new ObjectMapper();
>
> pojo deserialized = mapper.reader(pojo.class).readValue("[1, 2]");
>
> System.out.println(deserialized);
> }
> }
>
>
> The exception:
> Exception in thread "main"
> com.fasterxml.jackson.databind.JsonMappingException: Argument #0 of
> constructor [constructor for test$pojo, annotations: {interface
> com.fasterxml.jackson.annotation.JsonCreator=@com.fasterxml.jackson.annotation.JsonCreator(mode=DEFAULT)}]
>
> has no property name annotation; must have name when multiple-parameter
> constructor annotated as Creator
> at
> com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(DeserializerCache.java:269)
> at
> com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCacheValueDeserializer(DeserializerCache.java:244)
> at
> com.fasterxml.jackson.databind.deser.DeserializerCache.findValueDeserializer(DeserializerCache.java:142)
> at
> com.fasterxml.jackson.databind.DeserializationContext.findRootValueDeserializer(DeserializationContext.java:461)
> at
> com.fasterxml.jackson.databind.ObjectReader._findRootDeserializer(ObjectReader.java:1749)
> at
> com.fasterxml.jackson.databind.ObjectReader._bindAndClose(ObjectReader.java:1506)
> at
> com.fasterxml.jackson.databind.ObjectReader.readValue(ObjectReader.java:1136)
> at test.main(test.java:36)
> Caused by: java.lang.IllegalArgumentException: Argument #0 of constructor
> [constructor for test$pojo, annotations: {interface
> com.fasterxml.jackson.annotation.JsonCreator=@com.fasterxml.jackson.annotation.JsonCreator(mode=DEFAULT)}]
>
> has no property name annotation; must have name when multiple-parameter
> constructor annotated as Creator
> at
> com.fasterxml.jackson.databind.deser.BasicDeserializerFactory._addDeserializerConstructors(BasicDeserializerFactory.java:512)
> at
> com.fasterxml.jackson.databind.deser.BasicDeserializerFactory._constructDefaultValueInstantiator(BasicDeserializerFactory.java:324)
> at
> com.fasterxml.jackson.databind.deser.BasicDeserializerFactory.findValueInstantiator(BasicDeserializerFactory.java:254)
> at
> com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.buildBeanDeserializer(BeanDeserializerFactory.java:222)
> at
> com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.createBeanDeserializer(BeanDeserializerFactory.java:142)
> at
> com.fasterxml.jackson.databind.deser.DeserializerCache._createDeserializer2(DeserializerCache.java:403)
> at
> com.fasterxml.jackson.databind.deser.DeserializerCache._createDeserializer(DeserializerCache.java:352)
> at
> com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(DeserializerCache.java:264)
> ... 7 more
>
>
> When I remove the constructor, and move the @JsonProperty annotations
> directly to the members, everything works. Is this expected?
>
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