membersound

目前我可以用 AttributesConverter . 很好 Spring 可以自动将Jackson映射器注入其中:

@Entity
public class Customer {
    @Convert(converter = AddressConverter.class)
    @Lob
    @Column(columnDefinition = "text")
    private List<Address> address;
}

@Converter
public class AddressConverter implements AttributeConverter<List<Address>, String> {
    private ObjectMapper objectMapper;

    @Autowired //injected by spring
    public AddressConverter(ObjectMapper objectMapper) {
        this.objectMapper = objectMapper;
    }

    @Override
    public String convertToDatabaseColumn(List<AddressConverter> list) {
        try {
            if (!CollectionUtils.isEmpty(list))
                return objectMapper.writeValueAsString(list);
        } catch (final JsonProcessingException e) {
            LOGGER.error(e);
        }

        return null;
    }

    @Override
    public List<Address> convertToEntityAttribute(String json) {
        try {
            if (StringUtils.isNotBlank(json))
                return objectMapper.readValue(json, List.class);
        } catch (final IOException e) {
            LOGGER.error(e);
        }

        return null;
    }
}