在elasticsearch中使用模糊查询时找到实际匹配的单词

Z时代
2024-01-10
分类：问答

我是Elasticsearch的新手，正在寻找模糊查询搜索。

我用这样的对象/记录值制作了新的索引产品

{ "_index": "products", "_type": "product", "_id": "10", "_score": 1, "_source": { "value": [ "Ipad", "Apple", "Air", "32 GB" ] } }

现在当我在elasticsearch中执行模糊查询搜索时

{
   query: {
       fuzzy: {
          value: "tpad"
       }
   }
}

它会向我返回预期的正确记录（上述产品）。

而且我知道该术语tpad匹配，ipad因此记录已归还。

但是从技术上讲，我怎么知道它已经匹配了ipad。elasticsearch仅返回完整记录，像这样

{
"took": 4,
"timed_out": false,
"_shards": {
    "total": 5,
    "successful": 5,
    "failed": 0
},
"hits": {
    "total": 1,
    "max_score": 0.61489093,
    "hits": [
        {
            "_index": "products",
            "_type": "product",
            "_id": "10",
            "_score": 0.61489093,
            "_source": {
                "value": [
                    "Ipad",
                    "Apple",
                    "Air",
                    "32 GB"
                ]
            }
        }
    ]
}
}

是否有elasticsearch任何方式，这样我可以知道，如果它匹配了tpad反对ipad

回答：

如果使用高亮，Elasticsearch将显示匹配的术语：

curl -XGET http://localhost:9200/products/product/_search?pretty -d '{
  "query" : {
    "fuzzy" : {
        "value" : "tpad"
      }
  },
  "highlight": {
    "fields" : {
        "value" : {}
    }
  }
}'

Elasticsearch将返回匹配的文档，并突出显示该片段：

{
  "took" : 31,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "failed" : 0
  },
  "hits" : {
    "total" : 1,
    "max_score" : 0.13424811,
    "hits" : [ {
      "_index" : "products",
      "_type" : "product",
      "_id" : "10",
      "_score" : 0.13424811,
      "_source":{
 "value" : ["Ipad",
                "Apple",
                "Air",
                "32 GB"
                ]
           },
      "highlight" : {
        "value" : [ "<em>Ipad</em>" ]
      }
    } ]
  }
}