Question

我正在尝试使用空格进行通配符查询。它可以根据期限轻松匹配单词，但不能在现场基础上匹配。

我已经阅读了文档，其中说我需要将字段设置为not_analyzed但是使用此类型设置时，它不返回任何内容。

这是它在期限基础上的映射：

{
  "denshop" : {
    "mappings" : {
      "products" : {
        "properties" : {
          "code" : {
            "type" : "string"
          },
          "id" : {
            "type" : "long"
          },
          "name" : {
            "type" : "string"
          },
          "price" : {
            "type" : "long"
          },
          "url" : {
            "type" : "string"
          }
        }
      }
    }
  }
}

这是完全相同的查询不返回任何内容的映射：

{
  "denshop" : {
    "mappings" : {
      "products" : {
        "properties" : {
          "code" : {
            "type" : "string"
          },
          "id" : {
            "type" : "long"
          },
          "name" : {
            "type" : "string",
            "index" : "not_analyzed"
          },
          "price" : {
            "type" : "long"
          },
          "url" : {
            "type" : "string"
          }
        }
      }
    }
  }
}

查询在这里：

curl -XPOST http://127.0.0.1:9200/denshop/products/_search?pretty -d '{"query":{"wildcard":{"name":"*test*"}}}'

使用not_analyzed属性的响应：

{
  "took" : 3,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "failed" : 0
  },
  "hits" : {
    "total" : 0,
    "max_score" : null,
    "hits" : [ ]
  }
}

没有not_analyzed的回复：

{
  "took" : 4,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "failed" : 0
  },
  "hits" : {
    "total" : 5,
    "max_score" : 1.0,
    "hits" : [ {
    ...

编辑：添加所需信息

以下是文件清单：

{
  "took" : 2,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "failed" : 0
  },
  "hits" : {
    "total" : 5,
    "max_score" : 1.0,
    "hits" : [ {
      "_index" : "denshop",
      "_type" : "products",
      "_id" : "3L1",
      "_score" : 1.0,
      "_source" : {
        "id" : 3,
        "name" : "Testovací produkt 2",
        "code" : "",
        "price" : 500,
        "url" : "http://www.denshop.lh/damske-obleceni/testovaci-produkt-2/"
      }
    }, {
      "_index" : "denshop",
      "_type" : "products",
      "_id" : "4L1",
      "_score" : 1.0,
      "_source" : {
        "id" : 4,
        "name" : "Testovací produkt 3",
        "code" : "",
        "price" : 666,
        "url" : "http://www.denshop.lh/damske-obleceni/testovaci-produkt-3/"
      }
    }, {
      "_index" : "denshop",
      "_type" : "products",
      "_id" : "2L1",
      "_score" : 1.0,
      "_source" : {
        "id" : 2,
        "name" : "Testovací produkt",
        "code" : "",
        "price" : 500,
        "url" : "http://www.denshop.lh/damske-obleceni/testovaci-produkt/"
      }
    }, {
      "_index" : "denshop",
      "_type" : "products",
      "_id" : "5L1",
      "_score" : 1.0,
      "_source" : {
        "id" : 5,
        "name" : "Testovací produkt 4",
        "code" : "",
        "price" : 666,
        "url" : "http://www.denshop.lh/damske-obleceni/testovaci-produkt-4/"
      }
    }, {
      "_index" : "denshop",
      "_type" : "products",
      "_id" : "6L1",
      "_score" : 1.0,
      "_source" : {
        "id" : 6,
        "name" : "Testovací produkt 5",
        "code" : "",
        "price" : 666,
        "url" : "http://www.denshop.lh/tricka-tilka-tuniky/testovaci-produkt-5/"
      }
    } ]
  }
}

如果没有not_analyzed，则返回：

curl -XPOST http://127.0.0.1:9200/denshop/products/_search?pretty -d '{"query":{"wildcard":{"name":"*testovací*"}}}'

但不是这个（注意星号前的空格）：

curl -XPOST http://127.0.0.1:9200/denshop/products/_search?pretty -d '{"query":{"wildcard":{"name":"*testovací *"}}}'

当我将not_analyzed添加到映射时，无论我在通配符查询中放入什么，它都不会返回任何命中。

Answer 1

添加一个应该小写文本的自定义分析器。然后在您的搜索查询中，在将文本传递给它之前在客户端应用程序中将其缩小。

另外，为了保留原始分析链，我在您的name字段中添加了一个子字段，该字段将使用自定义分析器。

PUT /denshop
{
  "settings": {
    "analysis": {
      "analyzer": {
        "keyword_lowercase": {
          "type": "custom",
          "tokenizer": "keyword",
          "filter": [
            "lowercase"
          ]
        }
      }
    }
  },
  "mappings": {
    "products": {
      "properties": {
        "name": {
          "type": "string",
          "fields": {
            "lowercase": {
              "type": "string",
              "analyzer": "keyword_lowercase"
            }
          }
        }
      }
    }
  }
}

该查询将适用于子字段：

GET /denshop/products/_search
{
  "query": {
    "wildcard": {
      "name.lowercase": "*testovací *"
    }
  }
}

带空格的Elasticsearch通配符查询

1 个答案: