mybatis建立插入postgresql的json类型数据的方法

@Data
public class SyncLog implements Serializable {
  @TableId(type= IdType.INPUT)
  private Long id;
  @TableField(value = "content",typeHandler = JsonTypeHandler.class)
  private Object content;
  /**
  * 创建时间
  */
  private Date createTime;
  private static final long serialVersionUID = 1L;
}

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.ibatis.type.BaseTypeHandler;
import org.apache.ibatis.type.JdbcType;
import org.postgresql.util.PGobject;
import java.sql.*;
public class JsonTypeHandler extends BaseTypeHandler {
  private static final ObjectMapper objectMapper = new ObjectMapper();
  @Override
  public void setNonNullParameter(PreparedStatement ps, int i, Object parameter, JdbcType jdbcType) throws SQLException {
    String jsonString;
    try {
      if(parameter instanceof String){
        jsonString = (String) parameter;
      }else {
        jsonString = objectMapper.writeValueAsString(parameter);
      }
    } catch (JsonProcessingException e) {
      throw new SQLException("JsonTypeHandler JSON serialization error", e);
    }
    // 获取数据库类型
    Connection connection = ps.getConnection();
    DatabaseMetaData metaData = connection.getMetaData();
    String databaseProductName = metaData.getDatabaseProductName().toLowerCase();
    if (databaseProductName.contains("postgresql")) {
      PGobject pgObject = new PGobject();
      pgObject.setType("json"); // 或者 "jsonb" 根据需求
      pgObject.setValue(jsonString);
      ps.setObject(i, pgObject);
    } else {
      //其他数据库处理逻辑
      ps.setString(i, jsonString);
    }
  }
  @Override
  public Object getNullableResult(ResultSet rs, String columnName) throws SQLException {
    return parseJson(rs.getString(columnName));
  }
  @Override
  public Object getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
    return parseJson(rs.getString(columnIndex));
  }
  @Override
  public Object getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
    return parseJson(cs.getString(columnIndex));
  }
  private Object parseJson(String json) throws SQLException {
    if (json == null) {
      return null;
    }
    try {
      return objectMapper.readTree(json);
    } catch (Exception e) {
      throw new SQLException("JsonTypeHandler JSON deserialization error", e);
    }
  }
}

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.apache.ibatis.annotations.Mapper;
import java.util.List;
@Mapper
public interface SyncLogDao extends BaseMapper {
}

@RunWith(SpringRunner.class)
@SpringBootTest(classes= AIAssetExternalApplication.class)
public class IntegrationTest {
  @Autowired
  SyncLogDao syncLogDao;
  @Test
  public void sync() throws Exception {
    SyncLog syncLog = new SyncLog();
    syncLog.setId(1L);
    String jsonStr="{\"size\": 3474046}";
    syncLog.setContent(jsonStr);
    syncLogDao.insert(syncLog);
  }
}