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spring-bootfasterxml
Neetesh Narvaria
Neetesh Narvaria

Reputation: 107

Spring boot 1.5.8 with jakson 2.10.0 object mapping issue

i have upgraded jakson api on spring boot 1.5.8 from jakson 2.8.0 to 2.10.0, since then mapping of object is behaving different.

when i am passing request body on springboot controller having propertyname cityCode sample json

{ 
cityCode:DEL
}

when adding jsonproperty mapping works fine 

@JsonProperty("cityCode")
private String cityCode;

but when i don't add @JsonProperty annotation it looks for CityCode instead. since json passed on request is

{ 
cityCode:DEL
}

it assing 

object{cityCode=null}

please let me know if there is any property which i need to add on spring boot

because in most of my scenario i don't want to add @JsonProperty annotation to class fields

EDIT:

I enable log.level to trace i saw some message related to jackson

POJOPropertyBuilder - Unable to instantiate jackson 2.6 object. Using higher version of jackson.

EDIT2:

Adding Sample Model Class

import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;

import java.io.Serializable;
import java.util.List;

@JsonIgnoreProperties(ignoreUnknown = true)
@ApiModel(value = "CityRequest")
public class CityRequest implements Serializable {
    private static final long serialVersionUID = 1L;

    @ApiModelProperty
    private String cityCode;

    @ApiModelProperty
    private String cityName;

    @ApiModelProperty
    private String area;

    @ApiModelProperty
    private List<String> areas;

    public String getCityCode() {
        return cityCode;
    }

    public void setCityCode(String cityCode) {
        this.cityCode = cityCode;
    }

    public String getCityName() {
        return cityName;
    }

    public void setCityName(String cityName) {
        this.cityName = cityName;
    }

    public String getArea() {
        return area;
    }

    public void setArea(String area) {
        this.area = area;
    }

    public List<String> getAreas() {
        return areas;
    }

    public void setAreas(List<String> areas) {
        this.areas = areas;
    }

    @Override
    public String toString() {
        return "CityRequest{" +
                "cityCode='" + cityCode + '\'' +
                ", cityName='" + cityName + '\'' +
                ", area='" + area + '\'' +
                ", areas=" + areas +
                '}';
    }
}

on the controller method is being passed as

@ApiParam(value = "This field specifies the list of requests", required = true) 
@Valid @RequestBody(required = true) CityRequest cityRequest

Upvotes: 0

Views: 255

Answers (3)

Neetesh Narvaria
Neetesh Narvaria

Reputation: 107

I have used one java api on spring-boot application where object mapper naming strategy is being set to upper_camel_case.

since that class imported on App.java(@SpringBootApplication) upper_camel_case strategy being applied globally.

to fix this globally imposed upper_camel_case strategy i have override the object mapper configuration on App.java and removed 

objectMapper.setPropertyNamingStrategy(new UpperCamelCaseStrategy());

now i am able to use default naming strategy on application.

Upvotes: 0

Hermann Steidel
Hermann Steidel

Reputation: 1200

You might want to give this a try as an app property to configure Jackson globally.

spring.jackson.property-naming-strategy=LOWER_CAMEL_CASE

Upvotes: 0

Paul
Paul

Reputation: 21

I haven't tried but maybe you can try changing the naming strategy to lowerCamelCase:

@JsonNaming(PropertyNamingStrategy.lowerCamelCase.class)
public class City {
    private String cityCode;
}

Upvotes: 1

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