前言

  • 本文对 Elasticsearch 7.13 无效
  • 创立工夫（create_time）没找到好的实现形式
  • 如果入库的数据不会更新，文中的 create_time 可等同于 update_time

update_time 示例

  • 创立 Ingest pipelines（script、date）
PUT _ingest/pipeline/add_update_time{  "processors": [    {      "script": {        "lang": "painless",        "source": """DateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssX"); df.setTimeZone(TimeZone.getTimeZone("Asia/Shanghai")); Date date = new Date(); ctx.update_time = df.format(date);"""      }    }  ]}
  • 创立索引，并设置默认 pipeline
PUT my_index{  "settings": {    "index.default_pipeline": "add_update_time"  }}
  • 插入数据
POST my_index/_doc/1{  "title": "nothing"}
  • 查看 mapping
GET my_index/_mapping
{  "my_index" : {    "mappings" : {      "properties" : {        "title" : {          "type" : "text",          "fields" : {            "keyword" : {              "type" : "keyword",              "ignore_above" : 256            }          }        },        "update_time" : {          "type" : "date"        }      }    }  }}
  • 查问数据
GET my_index/_search{  "query": {    "range": {      "update_time": {        "time_zone": "+08",                "gte": "2021-07-28T16:00:00",         "lte": "now"                        }    }  }}
{  "took" : 0,  "timed_out" : false,  "_shards" : {    "total" : 1,    "successful" : 1,    "skipped" : 0,    "failed" : 0  },  "hits" : {    "total" : {      "value" : 1,      "relation" : "eq"    },    "max_score" : 1.0,    "hits" : [      {        "_index" : "my_index",        "_type" : "_doc",        "_id" : "1",        "_score" : 1.0,        "_source" : {          "update_time" : "2021-07-28T18:03:35+08",          "title" : "nothing"        }      }    ]  }}
本文出自 qbit snap