I use the library fasterxml to parse my data from my server. Since a couple of hours i started to get this error message. When i try to retrieve some json. I do not know why i get this message because it was working fine before. So if anyone could explain me what does that mean, it will be awesome. Thank you in advanced !
Caused by: com.fasterxml.jackson.databind.JsonMappingException: Duplicate creator property "id" (index 0 vs 1)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(DeserializerCache.java:270)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCacheValueDeserializer(DeserializerCache.java:245)
at com.fasterxml.jackson.databind.deser.DeserializerCache.findValueDeserializer(DeserializerCache.java:143)
at com.fasterxml.jackson.databind.DeserializationContext.findContextualValueDeserializer(DeserializationContext.java:406)
at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.createContextual(CollectionDeserializer.java:164)
at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.createContextual(CollectionDeserializer.java:25)
at com.fasterxml.jackson.databind.DeserializationContext.handleSecondaryContextualization(DeserializationContext.java:653)
at com.fasterxml.jackson.databind.DeserializationContext.findContextualValueDeserializer(DeserializationContext.java:408)
here my class :
@JsonIgnoreProperties(ignoreUnknown = true)
public class Dieser
implements Serializable
{
private static final long serialVersionUID = 8847499061681136159L;
@JsonProperty("id")
private long id;
@JsonProperty("nickName")
private String nickName;
@JsonProperty("photo")
private Photo photo;
@JsonProperty("mail")
private String mail;
@JsonProperty("password")
private String password;
@JsonProperty("dateTime")
private long dateTime;
@JsonProperty("dieseCount")
private int dieseCount;
@JsonProperty("activateAccount")
public boolean activateAccount;
@JsonProperty("activateDateTime")
public long activateDateTime;
public Dieser()
{
}
}
Ok I got it. Actually the problem was on another business object where I had a JSON property duplicated as id.
@JsonCreator
public Extra(@JsonProperty("id") String id, @JsonProperty("id") ExtraType type, @JsonProperty("label") String label,
@JsonProperty("points") int points)
{
this.id = id;
this.type = type;
this.label = label;
this.points = points;
}
The stack trace wasn't really explicit about where the problem come from. The exception was raised each time i needed to parse any object, that's why i didn't see it at the first time.
This kind of problem waste me a lot of time. Hope that could help someone in the future.
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