mybatis-plus list保存与返回

package com.olivia.sdk.mybatis.type;

import com.baomidou.mybatisplus.extension.handlers.AbstractJsonTypeHandler;
import com.olivia.sdk.model.KVEntity;
import com.olivia.sdk.utils.JSON;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.apache.ibatis.type.JdbcType;
import org.apache.ibatis.type.MappedJdbcTypes;

import java.util.List;

@Slf4j
//@MappedTypes({new })
//@MappedJdbcTypes(JdbcType.VARCHAR)
public class ListKVTypeHandler extends AbstractJsonTypeHandler<List<KVEntity>> {


  private List<KVEntity> getListFromJSON(String val) {
    if (log.isDebugEnabled())
      log.debug("getListLongFromJSON: {}", val);
    if (StringUtils.isBlank(val)) {
      return List.of();
    }
    return JSON.readList(val, KVEntity.class);
  }

  @Override
  protected List<KVEntity> parse(String json) {
    return getListFromJSON(json);
  }

  @Override
  protected String toJson(List<KVEntity> obj) {
    return JSON.toJSONString(obj);
  }
}