1. HTML Strip Character Filter

原文链接 : https://www.elastic.co/guide/en/elasticsearch/reference/5.3/analysis-htmlstrip-charfilter.html

译文链接 :http://www.apache.wiki/display/Elasticsearch/HTML+Strip+Character+Filter

贡献者 : 谢雄ApacheCNApache中文网

HTML Strip Character Filter 会删除文本中的HTML元素,并且将HTML实体替换成对应的解码值(例如用替换&)。

案例

POST _analyze
{
  "tokenizer":      "keyword", 
  "char_filter":  [ "html_strip" ],
  "text": "<p>I&apos;m so <b>happy</b>!</p>"
}

keyword分词器只会返回一个词元(term)。

上面的案例将会返回如下的词元(term):

[ \nI'm so happy!\n ]

同样的案例,如果使用标准分词器(standar tokenizer)将会返回的词元(term)如下:

[ I'm, so, happy ]

1.1. 配置

HTML Strip Character Filter 接收如下参数:

参数名称 说明
escaped_tags 会原始文本中保留的一系列标签

配置案例:

PUT my_index
{
  "settings": {
    "analysis": {
      "analyzer": {
        "my_analyzer": {
          "tokenizer": "keyword",
          "char_filter": ["my_char_filter"]
        }
      },
      "char_filter": {
        "my_char_filter": {
          "type": "html_strip",
          "escaped_tags": ["b"]
        }
      }
    }
  }
}

POST my_index/_analyze
{
  "analyzer": "my_analyzer",
  "text": "<p>I&apos;m so <b>happy</b>!</p>"
}

上面案例将返回如下结果:

[ \nI'm so <b>happy</b>!\n ]
Copyright © Kilvn 2021. all right reserved,powered by Gitbook最后更新时间: 2021-06-08 20:22:42

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