python-3.x - 无法在 Elasticsearch 中搜索带有符号的查询

Question

我一直在尝试使用 elasticsearch python 客户端 来匹配查询，但即使在使用转义字符并设置了一些自定义分析器和映射之后我也无法匹配它他们。我想使用 & 进行搜索，但它没有给出任何响应。

from elasticsearch import Elasticsearch

es = Elasticsearch([{'host': 'localhost', 'port': 9200}])


doc1 = {
    'name': 'numb',
    'band': 'linkin_park',
    'year': '2006'
}

doc2 = {
    'name': 'Powerless &',
    'band': 'linkin_park',
    'year': '2006'
}
doc3 = {
    'name': 'Crawling !',
    'band': 'linkin_park',
    'year': '2006'
    }

doc =[doc1, doc2, doc3]
'''
create_index = {
    "settings": {
        "analysis": {
            "analyzer": {
                "my_analyzer": {
                    "type": "custom",
                    "filter": [
                        "lowercase"
                    ],
                    "tokenizer": "whitespace"
                }
            }
        }
    }
}

es.indices.create(index="idx_temp", body=create_index)
'''
for i in range(3):
    es.index(index="idx_temp", doc_type='_doc', id=i, body=doc[i])


my_mapping = {
  "properties": {
      "name": {
          "type": "text",
          "fields": {
              "keyword": {
                  "type": "keyword",
                  'ignore_above': 256
              }
          },
          "analyzer": "my_analyzer"
          "search_analyzer": "my_analyzer"
      },
      "band": {
          "type": "text",
          "fields": {
              "keyword": {
                  "type": "keyword",
                  "ignore_above": 256
              }
          },
          "analyzer": "my_analyzer"
          "search_analyzer": "my_analyzer"
      },
      "year": {
          "type": "text",
          "fields": {
              "keyword": {
                  "type": "keyword",
                  "ignore_above": 256
              }
          },
          "analyzer": "my_analyzer"
          "search_analyzer": "my_analyzer"
      }
  }
}

es.indices.put_mapping(index='idx_temp', body=my_mapping, doc_type='_doc', include_type_name=True)

res = es.search(index='idx_temp', body={
    "query": {
        "match": {
            "name": {
                "query": "powerless &",
                "fuzziness": 3

            }
        }
    }
})

for hit in res['hits']['hits']:
    print(hit['_source'])

预期的输出是 'name': 'Poweeerless &', 但我得到 0 次点击并且没有返回任何值。

Answer 1

所以我通过添加另一个字段解决了这个问题

 "search_quote_analyzer": "my_analyzer"

到设置字段之后

"analyzer": "my_analyzer"
"search_analyzer": "my_analyzer"

然后我通过在查询中使用 & 进行搜索来获取输出

'name': 'Poweeerless &'