Jackson序列化和反序列化不带双引号的对象

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;

@JsonInclude(JsonInclude.Include.NON_NULL)
@JsonAutoDetect(fieldVisibility = JsonAutoDetect.Visibility.ANY)
class MyObject {
    @JsonSerialize(using = NoQuotesSerializer.class)
    @JsonDeserialize(using = NoQuotesDeserializer.class)
    private String value;

    public MyObject(String value) {
        this.value = value;
    }

    public String getValue() {
        return value;
    }
}

class NoQuotesSerializer extends JsonSerializer<String> {
    @Override
    public void serialize(String value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
        gen.writeRawValue(value);
    }
}

class NoQuotesDeserializer extends JsonDeserializer<String> {
    @Override
    public String deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
        return p.getValueAsString();
    }
}

public class Main {
    public static void main(String[] args) throws IOException {
        ObjectMapper mapper = new ObjectMapper();
        mapper.enable(SerializationFeature.INDENT_OUTPUT);

        MyObject obj = new MyObject("Hello World");

        // 序列化
        String json = mapper.writeValueAsString(obj);
        System.out.println(json);

        // 反序列化
        MyObject deserializedObj = mapper.readValue(json, MyObject.class);
        System.out.println(deserializedObj.getValue());
    }
}