如何在杰克逊中将键映射到值对象？

Question

我有一个看起来像这样的JSON对象：

{"name":
    {"description": "test",
     "another_field": 1,
     ...
    }
...
}

我希望能够将JSON映射到Map<String, Specification>之类的映射对象，在该对象中规范对象可以将JSON属性名称映射到其他名称，当前，当我用Jackson转换时，我只得到JSON名称。我当前的转换器类如下：

public class HashMapConverter implements AttributeConverter<Map<String, Specification>, String> {

    private ObjectMapper objectMapper = new ObjectMapper();


    @Override
    public String convertToDatabaseColumn(Map<String, Specification> techSpecs){
        String technicalSpecs = null;
        try {
            technicalSpecs = objectMapper.writerWithDefaultPrettyPrinter().writeValueAsString(techSpecs);

        } catch (final JsonProcessingException e) {
            System.out.println(e);
        }
        return technicalSpecs;
    }

    @Override
    public Map<String, Specification> convertToEntityAttribute(String techSpecJSON){
        TypeReference<Map<String, Specification>> mapType = new TypeReference<Map<String, Specification>>(){};
        Map<String, Specification> techSpecs = null;
        try {
            techSpecs = objectMapper.readValue(techSpecJSON, mapType);
        } catch (final IOException e) {
            System.out.println(e);
        }
        return techSpecs;
    }
}

Spec类看起来像这样：

public class Specification {

    @JsonProperty("description")
    public String description;

    @JsonProperty("another_field")
    public Integer version;

    ...
}