我在为elasticsearch实现自动完成功能时遇到问题，这是我的设置：

创建自动完成的分析器

curl -XPUT http://localhost:9200/autocomplete/ -d '{
  "index": {
    "analysis": {
      "analyzer": {
        "placeNameIndexAnalyzer": {
          "type": "custom",
          "tokenizer": "keyword",
          "filter": [
            "trim",
            "lowercase",
            "asciifolding",
            "left_ngram"
          ]
        }
      },
      "filter": {
        "left_ngram": {
          "type": "edgeNGram",
          "side": "front",
          "min_gram": 3,
          "max_gram": 12
        }
      }
    }
  }
}'

然后，使用“别名”属性中的分析器在自动完成中创建一个类型：

curl -XPUT http://localhost:9200/autocomplete/geo/_mapping/ -d '{
  "geo": {
    "properties": {
      "application_id": {
        "type": "string"
      },
      "alias": {
        "type": "string",
        "analyzer": "placeNameIndexAnalyzer"
      },
      "name": {
        "type": "string"
      },
      "object_type": {
        "type": "string"
      }
    }
  }
}'

之后; 添加文档：

curl -XPOST http://localhost:9200/autocomplete/geo -d '{
  "application_id": "982",
  "name": "Buenos Aires",
  "alias": [
    "bue",
    "buenos aires",
    "bsas",
    "bs as",
    "baires"
  ],
  "object_type": "cities"
}'

当我运行以下命令时：

curl -XGET 'localhost:9200/autocomplete/geo/_search?q=alias:bs%20as'

结果是

{
  "took": 2,
  "timed_out": false,
  "_shards": {
    "total": 5,
    "successful": 5,
    "failed": 0
  },
  "hits": {
    "total": 0,
    "max_score": null,
    "hits": []
  }
}

和

curl -XGET 'localhost:9200/autocomplete/geo/_search?q=alias:bs as'  
curl: (52) Empty reply from server

但是我应该在“别名”字段中获取我的文档，我有一个“ bs as”。

我尝试使用_analyzeAPI，并得到了我认为是预期令牌的正确答案：

curl -XGET 'localhost:9200/autocomplete/_analyze?analyzer=placeNameIndexAnalyzer' -d 'bs as'

结果：

{
  "tokens": [
    {
      "token": "bs ",
      "start_offset": 0,
      "end_offset": 5,
      "type": "word",
      "position": 1
    },
    {
      "token": "bs a",
      "start_offset": 0,
      "end_offset": 5,
      "type": "word",
      "position": 1
    },
    {
      "token": "bs as",
      "start_offset": 0,
      "end_offset": 5,
      "type": "word",
      "position": 1
    }
  ]
}

有什么提示吗？

编辑： 当我用实际类型运行分析时，我得到以下信息：

curl -XGET 'localhost:9200/autocomplete/_analyze?analyzer=placeNameIndexAnalyzer' -d 'bs as'

结果：

{
  "_index": "autocomplete",
  "_type": "geo",
  "_id": "_analyze",
  "exists": false
}