Jackson UnrecognizedPropertyException

Question

I am trying to convert JsonString to Java object.

Json object

{
"action": "added",
"data": {
    "Quote": {
        "TotalDiscountsAmount": 0,
        "Id": "test123"
    },
    "Owner": {
        "Username": "00000000",
        "Id": "00000000"
    },
    "Discount_Amount__c": 0,
    "Base_List_Price__c": 574.88,
    "TotalList": 574.88,
    "Id": "000000",
    "ExtendedTotalList": 574.88,
    "BaseListPrice": 474.88
}
}

My POJOs:

AddtocartJson.java

package com.product.json;

import javax.annotation.Generated;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonPropertyOrder;

@JsonInclude(JsonInclude.Include.NON_NULL)
@Generated("org.jsonschema2pojo")
@JsonPropertyOrder({
  "action",
  "data"
})
public class AddToCartJson {
    @JsonProperty("action")
    private String action;
    @JsonProperty("data")
    private Data data;

    @JsonProperty("action")
    public String getAction() {
        return action;
    }

    @JsonProperty("action")
    public void setAction(String action) {
        this.action = action;
    }

    @JsonProperty("data")
    public Data getData() {
        return data;
    }

    @JsonProperty("data")
    public void setData(Data data) {
        this.data = data;
    }
}

Data.java

package com.product.json;

import javax.annotation.Generated;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonPropertyOrder;

@JsonInclude(JsonInclude.Include.NON_NULL)
@Generated("org.jsonschema2pojo")
@JsonPropertyOrder({
  "Quote",
  "Owner",
  "Discount_Amount__c",
  "Base_List_Price__c",
  "TotalList",
  "Id",
  "ExtendedTotalList",
  "BaseListPrice"
})
public class Data {

    @JsonProperty("Quote")
    private com.product.json.Quote Quote;
    @JsonProperty("Owner")
    private com.product.json.Owner Owner;
    @JsonProperty("Discount_Amount__c")
    private Integer DiscountAmountC;
    @JsonProperty("Base_List_Price__c")
    private Double BaseListPriceC;
    @JsonProperty("TotalList")
    private Double TotalList;
    @JsonProperty("Id")
    private String Id;
    @JsonProperty("ExtendedTotalList")
    private Double ExtendedTotalList;
    @JsonProperty("BaseListPrice")
    private Double BaseListPrice;

    @JsonProperty("Quote")
    public com.product.json.Quote getQuote() {
        return Quote;
    }

    @JsonProperty("Quote")
    public void setQuote(com.product.json.Quote Quote) {
        this.Quote = Quote;
    }

    @JsonProperty("Owner")
    public com.product.json.Owner getOwner() {
        return Owner;
    }

    @JsonProperty("Owner")
    public void setOwner(com.product.json.Owner Owner) {
        this.Owner = Owner;
    }

    @JsonProperty("Discount_Amount__c")
    public Integer getDiscountAmountC() {
        return DiscountAmountC;
    }

    @JsonProperty("Discount_Amount__c")
    public void setDiscountAmountC(Integer DiscountAmountC) {
        this.DiscountAmountC = DiscountAmountC;
    }

    @JsonProperty("Base_List_Price__c")
    public Double getBaseListPriceC() {
        return BaseListPriceC;
    }

    @JsonProperty("Base_List_Price__c")
    public void setBaseListPriceC(Double BaseListPriceC) {
        this.BaseListPriceC = BaseListPriceC;
    }

    @JsonProperty("TotalList")
    public Double getTotalList() {
        return TotalList;
    }

    @JsonProperty("TotalList")
    public void setTotalList(Double TotalList) {
        this.TotalList = TotalList;
    }

    @JsonProperty("Id")
    public String getId() {
        return Id;
    }

    @JsonProperty("Id")
    public void setId(String Id) {
        this.Id = Id;
    }

    @JsonProperty("ExtendedTotalList")
    public Double getExtendedTotalList() {
        return ExtendedTotalList;
    }

    @JsonProperty("ExtendedTotalList")
    public void setExtendedTotalList(Double ExtendedTotalList) {
        this.ExtendedTotalList = ExtendedTotalList;
    }

    @JsonProperty("BaseListPrice")
    public Double getBaseListPrice() {
        return BaseListPrice;
    }

    @JsonProperty("BaseListPrice")
    public void setBaseListPrice(Double BaseListPrice) {
        this.BaseListPrice = BaseListPrice;
    }
}

Quote.java

package com.product.json;

import javax.annotation.Generated;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonPropertyOrder;

@JsonInclude(JsonInclude.Include.NON_NULL)
@Generated("org.jsonschema2pojo")
@JsonPropertyOrder({
  "TotalDiscountsAmount",
  "Id"
})
public class Quote {
    @JsonProperty("TotalDiscountsAmount")
    private Integer TotalDiscountsAmount;
    @JsonProperty("Id")
    private String Id;

    @JsonProperty("TotalDiscountsAmount")
    public Integer getTotalDiscountsAmount() {
        return TotalDiscountsAmount;
    }

    @JsonProperty("TotalDiscountsAmount")
    public void setTotalDiscountsAmount(Integer TotalDiscountsAmount) {
        this.TotalDiscountsAmount = TotalDiscountsAmount;
    }

    @JsonProperty("Id")
    public String getId() {
        return Id;
    }

    @JsonProperty("Id")
    public void setId(String Id) {
        this.Id = Id;
    }
}

When I try to convert JSON to Java class using the mapper, it's throwing an UnrecognizedPropertyException. Seems likes even though I have a Quote object somehow mapper is not able to recognize the object.

org.codehaus.jackson.map.exc.UnrecognizedPropertyException: Unrecognized field "Quote" (Class com.product.json.Data), not marked as ignorable at [Source: java.io.StringReader@11547748; line: 1, column: 36] (through reference chain: com.product.json.AddToCartJson["data"]-> com.product.json.Data["Quote"]) at org.codehaus.jackson.map.exc.UnrecognizedPropertyException.from(UnrecognizedPropertyException.java:53) at org.codehaus.jackson.map.deser.StdDeserializationContext.unknownFieldException(StdDeserializationContext.java:267) at org.codehaus.jackson.map.deser.std.StdDeserializer.reportUnknownProperty(StdDeserializer.java:673)

How can I fix this?

Answer 1

The problem here is that OP mixes two different Jackson versions:

• 1.9 from org.codehaus (org.codehaus.jackson.map.exc.UnrecognizedPropertyException shows that)
• 2.x from com.fasterxml (visible in the imports import com.fasterxml.jackson.annotation.)

As pointed out by sam in the comments, OP should only use one version. Either use 2.x for deserialization or use annotations from the old 1.9 version. But it is recommended to use the newest version from com.fasterxml, instead of the old one.

Answer 2

you might want to ignore undefined properties by using Jackson's class-level annotation:

@JsonIgnoreProperties