原文地址: https://www.elastic.co/guide/en/elasticsearch/reference/7.7/analysis-tokenfilters.html, 原文档版权归 www.elastic.co 所有
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Token filter referenceedit
Token filters accept a stream of tokens from a tokenizer and can modify tokens (eg lowercasing), delete tokens (eg remove stopwords) or add tokens (eg synonyms).
Elasticsearch has a number of built-in token filters you can use to build custom analyzers.