elasticsearch - Elasticsearch忽略特殊字符

Question

elasticsearch中的单词搜索工作正常，但似乎忽略了所有特殊字符。例如，我有此数据(123)苹果和123 pear ，但是当我查询“(123)”时，我希望“(123)苹果”是第一个出现的数据，而不是“123 pear ”。我试图将tokeniser从标准 token 生成器更改为空白 token 生成器，但仍然无法正常工作。好心劝告。谢谢!

Data: 
(123) apple
 123 pear

Query: "(123)"

Expected:
(123) apple
 123 pear

Actual result:
 123 pear
(123) apple

Answer 1

我尝试了空白 token 生成器，它的工作原理

PUT /index25
{
  "mappings": {
    "properties": {
      "message":{
        "type": "text",
        "analyzer": "my_analyzer"
      }
    }
  }, 
   "settings": {
      "analysis": {
         "analyzer": {
            "my_analyzer": {
               "type": "custom",
               "filter": [
                  "lowercase"
               ],
               "tokenizer": "whitespace"
            }
         }
      }
   }
}

数据:

 [
      {
        "_index" : "index25",
        "_type" : "_doc",
        "_id" : "cIC70m0BD5PlkoxX1O0B",
        "_score" : 1.0,
        "_source" : {
          "message" : "123 pear"
        }
      },
      {
        "_index" : "index25",
        "_type" : "_doc",
        "_id" : "cYC70m0BD5PlkoxX9-3n",
        "_score" : 1.0,
        "_source" : {
          "message" : "(123) apple"
        }
      }
    ]

查询:

GET index25/_search
{
  "query": {
    "match": {
      "message": "(123)"
    }
  }
}

响应:

 [
      {
        "_index" : "index25",
        "_type" : "_doc",
        "_id" : "cYC70m0BD5PlkoxX9-3n",
        "_score" : 0.47000363,
        "_source" : {
          "message" : "(123) apple"
        }
      }
]

查询:

GET index25/_search
{
  "query": {
    "match": {
      "message": "123"
    }
  }
}

响应:

 [
      {
        "_index" : "index25",
        "_type" : "_doc",
        "_id" : "cIC70m0BD5PlkoxX1O0B",
        "_score" : 0.9808292,
        "_source" : {
          "message" : "123 pear"
        }
      }
    ]