ElasticSearch的Long字段截取_elasticsearch截取字符串

approveEndTime字段Long类型，值：20230208113518，存放日志格式yyyyMMddhhmmss

return doc['approveEndTime'].toString();

返回"[20230208113518]"

return doc['approveEndTime'].toString().substring(1, 7);

返回 "202302"

return doc['approveEndTime'].value.toString().substring(1, 7);

返回"023031"

return doc['approveEndTime'].value.toString().substring(0, 6);

返回 "202302"

return doc['approveEndTime'].value.toString();

返回 "20230208113518"

return doc['approveEndTime'].value;

返回 "20230208113518"

return doc['approveEndTime'];

返回"20230208113518"

return doc['approveEndTime'].substring(1, 7);

报错

return doc['approveEndTime'].value.substring(1, 7);

报错