杰克逊不使用@JsonProperty覆盖吸气剂 [英] Jackson Not Overriding Getter with @JsonProperty

问题描述

JsonProperty不会覆盖杰克逊从吸气剂获得的默认名称.如果我用ObjectMapper和jackson序列化下面的类，我会得到

JsonProperty isn't overriding the default name jackson gets from the getter. If I serialize the class below with ObjectMapper and jackson I get

{"hi":"hello"}

如您所见，JsonProperty批注无效

As you can see the JsonProperty annotation has no effect

class JacksonTester {
    String hi;

    @JsonProperty("hello")
    public String getHi() {
        return hi;
    }
}   

在字符串本身上放置@JsonProperty也不起作用.似乎我可以更改名称的唯一方法是通过重命名getter，唯一的问题是，对于第一个字母，该名称将始终为小写

Putting @JsonProperty on the String itself doesn't work either. The only way it seems that I can change the name is by renaming the getter, the only problem is that it then will always be lowercase for the first letter

推荐答案

问题是我同时使用了旧的和新的杰克逊库

The problem was that I was using both the old and new jackson libraries

即在我之前 import org.codehaus.jackson.annotate.JsonProperty; 为了与我使用的库保持一致，我必须将其更改为以下内容.

i.e. before I had import org.codehaus.jackson.annotate.JsonProperty; Which I had to change to below, to be consistent with the library I was using.

自从我使用Maven以来，这还意味着更新我的Maven依赖项. import com.fasterxml.jackson.annotation.JsonProperty;

Since I was using maven that also meant updating my maven dependencies. import com.fasterxml.jackson.annotation.JsonProperty;

要使其正常工作，我需要在吸气剂上添加@JsonProperty注释(将其放在对象上无效)

For it to work, I needed the @JsonProperty annotation on the getter (putting it on the object didn't work)

我在这里找到了答案(多亏了francescoforesti) @JsonProperty无法按预期工作

I found the answer here (thanks to francescoforesti) @JsonProperty not working as expected

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