杰克逊(Jackson)处理字符串(如果有注释) [英] Jackson process string if annotated

问题描述

如果该字段具有注释，则需要替换所有&反序列化时，字符串中带有§的字符，而序列化时则相反.

If the field has an annotation, I need to replace all the & characters in the string with § when deserializing, and do the opposite when serializing

例如，我创建了一个注释并用它标记了一个字段

For example i created an annotation and marked a field with it

public class SomeData {
    @MinecraftColorText
    private String str;
}

我需要阅读此json:

I need read this json:

{"str":"&6Some nice text"}

，并且在Java对象中，str字段需要为:§6一些漂亮的文本

and in java object str field need be: §6Some nice text

我只需要处理带注释的字段，而不是全部字符串

Im need process only annotated fields, not all String

我想用 ContextualSerializer 做到这一点，但是据我了解，它取代了标准的序列化

I wanted to do it with ContextualSerializer, but as I understand it, it replaces the standard serialization

推荐答案

因此，您应该更改自定义批注 @MinecraftColorText 并添加序列化和反序列化转换器:

So you should change your custom annotation @MinecraftColorText and add serialize and deserialize convertors:

@JsonDeserialize(converter = MinecraftDeserializeConverter.class)
@JsonSerialize(converter = MinecraftSerializeConverter.class)
@Retention(RUNTIME)
@Target(FIELD)
@JacksonAnnotationsInside
public @interface MinecraftColorText {
}

反序列化转换器:

public class MinecraftDeserializeConverter extends StdConverter<String, String> {

    @Override
    public String convert(final String s) {
        return s.replaceAll("&", "§");
    }
}

序列化转换器:

public class MinecraftSerializeConverter extends StdConverter<String, String> {

    @Override
    public String convert(final String s) {
        return s.replaceAll("§", "&");
    }
}

并使用:

  @MinecraftColorText
  private String str;

p.s:不要忘记将 @JacksonAnnotationsInside 通知 jackson 有关您的自定义序列化操作的信息.在此处

p.s: Don't forget about @JacksonAnnotationsInside that notify jackson about your custom serialization action. See more here

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