具有不同字段名称的 Jackson JSONDeserialize + Builder？

Question

我刚开始使用 Jackson，我正在尝试遵循我的团队的模式来反序列化我们的 JSON。现在，我运行遇到字段名称与 JSON 属性不匹配的问题。

工作示例：

@JsonDeserialize(builder = ProfilePrimaryData.Builder.class)
@Value
@ParametersAreNonnullByDefault
@Builder(builderClassName = "Builder")
private static class ProfilePrimaryData {
    private final Boolean hasProfile;

    @JsonPOJOBuilder(withPrefix = "")
    public static class Builder {
    }
}

如果 JSON 属性是 hasProfile，它工作正常，但如果它是 has_profile（这是我们的客户正在写的），它就不起作用，我明白了一个错误：Unrecognized field "has_profile" (class com.mypackagehere.something.$ProfilePrimaryData$Builder), not marked as ignorable (one known property: "hasProfile"])。我试过像这样向 hasProfile 添加 JsonProperty 注释，但它仍然不起作用：

@JsonDeserialize(builder = ProfilePrimaryData.Builder.class)
@Value
@ParametersAreNonnullByDefault
@Builder(builderClassName = "Builder")
private static class ProfilePrimaryData {
    @JsonProperty("has_profile")
    private final Boolean hasProfile;

    @JsonPOJOBuilder(withPrefix = "")
    public static class Builder {
    }
}

我是不是误解了它的工作原理？

Answer 1

错误清楚地说 Unrecognized field "has_profile" (class com.mypackagehere.something.$ProfilePrimaryData$Builder)
即 Builder class 中缺少 has_profile，而不是 ProfilePrimaryData class，因此您必须注释 Builder class 属性。

@JsonDeserialize(builder = ProfilePrimaryData.Builder.class)
public class ProfilePrimaryData {

    /*
     * This annotation only needed, if you want to
     * serialize this field as has_profile,
     * 
     * <pre>
     * with annotation
     * {"has_profile":true}
     * 
     * without annotation
     * {"hasProfile":true}
     * <pre>
     *  
     */
    //@JsonProperty("has_profile")
    private final Boolean hasProfile;

    private ProfilePrimaryData(Boolean hasProfile) {
        this.hasProfile = hasProfile;
    }

    public Boolean getHasProfile() {
        return hasProfile;
    }

    @JsonPOJOBuilder(withPrefix = "")
    public static class Builder {

        // this annotation is required
        @JsonProperty("has_profile")
        private Boolean hasProfile;

        public Builder hasProfile(Boolean hasProfile) {
            this.hasProfile = hasProfile;
            return this;
        }

        public ProfilePrimaryData build() {
            return new ProfilePrimaryData(hasProfile);
        }
    }
}

具有不同字段名称的 Jackson JSONDeserialize + Builder？

Jackson JSONDeserialize + Builder with different field name?

jackson

json-deserialization