创建文档时的ElasticSearch Format字段 [英] ElasticSearch Format field on document creation

问题描述

我有一个包含1个字段的映射:

I have a mapping with 1 field:

"message" : {
    "type" : "text"
}

我插入一个新文档:

"message" : " 123 "

是否可以通过ES功能更改字段文本(修饰)?
目的是为消息"字段创建标准.
澄清:不是针对反向索引过滤文本，而是针对原始文本.

Is it possible to change field text (trim) via ES functionality?
The purpose is to create a standard for field "message".
Clarification: Not to filter text for reverse index, but for original text.

必需的输出应为:

{
     "message" : "123"   
}

推荐答案

是的，您可以使用 修剪处理器.

Yes, you can achieve that using an ingest pipeline with a trim processor.

首先定义提取管道:

PUT _ingest/pipeline/my-pipeline
{
  "description": "My ingest pipeline",
  "processors": [
    {
      "trim": {
        "field": "message"
      }
    }
  ]
}

然后只需指定索引文档时要使用的管道:

Then simply specify the pipeline to use when indexing your documents:

PUT my-index/doc/1?pipeline=my-pipeline
{
  "message": " 123 "
}

然后您会看到开头和结尾的空格已被删除

Then you can see that the leading and trailing whitespaces have been removed

GET my-index/doc/1
=>
{
  "message": "123"
}

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