MyBatis-Plus实现优雅处理JSON字段映射

["tag-101", "tag-202", "tag-333"]

@TableField(typeHandler = JsonArrayTypeHandler.class)
private JSONArray tagList;

@TableName(value = "travel_cuisine", autoResultMap = true)

CREATE TABLE travel_cuisine (
  id BIGINT PRIMARY KEY AUTO_INCREMENT,
  name VARCHAR(100),
  tag_list TEXT -- JSON Array 字符串
);

@Data
@TableName(value = "travel_cuisine", autoResultMap = true)
public class TravelCuisineDO {

    private Long id;

    private String name;

    @TableField(typeHandler = JsonArrayTypeHandler.class)
    private JSONArray tagList;
}

public class JsonArrayTypeHandler extends BaseTypeHandler<JSONArray> {

    @Override
    public void setNonNullParameter(PreparedStatement ps, int i, JSONArray parameter, JdbcType jdbcType) throws SQLException {
        ps.setString(i, parameter.toJSONString());
    }

    @Override
    public JSONArray getNullableResult(ResultSet rs, String columnName) throws SQLException {
        String result = rs.getString(columnName);
        return JSON.parseArray(result);
    }

    @Override
    public JSONArray getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
        String result = rs.getString(columnIndex);
        return JSON.parseArray(result);
    }

    @Override
    public JSONArray getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
        String result = cs.getString(columnIndex);
        return JSON.parseArray(result);
    }
}