elasticsearch - 如何在 Elasticsearch 脚本中从日期获取时间戳

Question

就像标题所暗示的那样，我想从 flex 搜索无痛脚本中的日期类型获取时间戳(作为数字)。下列尝试无效:doc["date_field"].value，doc["date_field"].date.getMillis()。

Answer 1

根据Painless docs，您应该可以访问自纪元以来的毫秒数:doc.date_field.millis。

Date fields are exposed as ReadableDateTime, so they support methods like getYear, getDayOfWeek or e.g. getting milliseconds since epoch with getMillis. To use these in a script, leave out the get prefix and continue with lowercasing the rest of the method name.

您还应该能够使用 ReadableDateTime中的方法。 https://www.elastic.co/guide/en/elasticsearch/painless/6.4/painless-api-reference.html#painless-api-reference-org-joda-time-ReadableDateTime