📅  最后修改于: 2022-03-11 15:02:59.887000             🧑  作者: Mango
@Converter
public class JsonToMapConverter
implements AttributeConverter>
{
private static final Logger LOGGER = LoggerFactory.getLogger(JsonToMapConverter.class);
@Override
@SuppressWarnings("unchecked")
public Map convertToDatabaseColumn(String attribute)
{
if (attribute == null) {
return new HashMap<>();
}
try
{
ObjectMapper objectMapper = new ObjectMapper();
return objectMapper.readValue(attribute, HashMap.class);
}
catch (IOException e) {
LOGGER.error("Convert error while trying to convert string(JSON) to map data structure.");
}
return new HashMap<>();
}
@Override
public String convertToEntityAttribute(Map dbData)
{
try
{
ObjectMapper objectMapper = new ObjectMapper();
return objectMapper.writeValueAsString(dbData);
}
catch (JsonProcessingException e)
{
LOGGER.error("Could not convert map to json string.");
return null;
}
}
}