Elasticsearch 6.3.2 - 如何使用该索引上的所有字段搜索部分词？

Question

1. 您对创建搜索请求有任何想法吗？多重匹配+部分词搜索。

 {
      "shop_index": {
          "settings": {
              "index": {
                  "number_of_shards": "5",
                  "provided_name": "shop_index",
                  "creation_date": "1534235625279",
                  "analysis": {
                      "filter": {
                          "nGram_filter": {
                              "token_chars": [
                                  "letter",
                                  "digit",
                                  "punctuation",
                                  "symbol"
                              ],
                              "min_gram": "2",
                              "type": "nGram",
                              "max_gram": "20"
                          }
                      },
                      "analyzer": {
                          "nGram_analyzer": {
                              "filter": [
                                  "lowercase",
                                  "asciifolding",
                                  "nGram_filter"
                              ],
                              "type": "custom",
                              "tokenizer": "whitespace"
                          },
                          "whitespace_analyzer": {
                              "filter": [
                                  "lowercase",
                                  "asciifolding"
                              ],
                              "type": "custom",
                              "tokenizer": "whitespace"
                          }
                      }
                  },
                  "number_of_replicas": "1",
                  "uuid": "SBB9u344RVGm1QQUo-rVMg",
                  "version": {
                      "created": "6030299"
                  }
              }
          }
      }
    }

1. 映射

{
      "shop_index": {
          "mappings": {
              "products": {
                  "properties": {
                      "html_keywords": {
                          "type": "text"
                      },
                      "html_title": {
                          "type": "text"
                      },
                      "name": {
                          "type": "text"
                      }
                  }
              }
          }
      }
    }

1. 我想搜索短语，例如 -> 搜索“HOUSE”
   • 打字 -> “ho” -> 显示“HOUSE”
   • 打字->“侯”->给我看“房子”
   • 打字->“使用”->给我看“房子”
   • 打字 -> “se” -> 显示“HOUSE”

Answer 1

您可以使用模糊查询 - https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-fuzzy-query.html 来实现它。还可以考虑将它与 slop （允许的术语相距多远）结合起来，并使用 multi_match 在多个字段中进行搜索。

示例查询：

{
    "query":
    {
        "multi_match":
        {
            "fields": ["field1", "field2"],
            "query": "hous",
            "slop": 3,
            "fuzziness": "AUTO"
        }
    }
}