杰克逊克服了下划线，支持骆驼案 [英] Jackson overcoming underscores in favor of camel-case

问题描述

我从互联网上检索一个JSON字符串;像大多数JSON我看到它包括由下划线分隔的长键。基本上，我的目标是将JSON反序列化为java对象，但我不在java代码中使用下划线。

I retrieve a JSON string from internet; like most JSON I've seen it includes long keys that are separated by underscores. Essentially, my goal is to deserialize JSON into java-objects, but I don't use underscores in java-code.

例如，我可能有一个用户带驼峰的 firstName 字段，同时我需要以某种方式告诉杰克逊映射 first_name 从JSON到 firstName 类字段的密钥。有可能吗？

For instance, I might have a User class with firstName field in camel-case, simultaneously I need somehow to tell Jackson to map first_name key from JSON to firstName class field. Is it possible?

class User{
    protected String firstName;
    protected String getFirstName(){return firstName;}
}

推荐答案

您应该在要更改默认名称映射的字段上使用 @JsonProperty 。

You should use the @JsonProperty on the field you want to change the default name mapping.

class User{
    @JsonProperty("first_name")
    protected String firstName;
    protected String getFirstName(){return firstName;}
}

更多info： API

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