Elasticsearch 映射参数详解 fields

PUT my_index
{
  "mappings": {
    "_doc": {
      "properties": {
        "city": {
          "type": "text",
          "fields": {
            "raw": { 
              "type":  "keyword"
            }
          }
        }
      }
    }
  }
}

GET my_index/_search
{
  "query": {
    "match": {
      "city": "york" 
    }
  },
  "sort": {
    "city.raw": "asc" 
  },
  "aggs": {
    "Cities": {
      "terms": {
        "field": "city.raw" 
      }
    }
  }
}

PUT my_index
{
  "mappings": {
    "_doc": {
      "properties": {
        "text": { 
          "type": "text",
          "fields": {
            "english": { 
              "type":     "text",
              "analyzer": "english"
            }
          }
        }
      }
    }
  }
}

"label": {
            "type": "keyword",
            "fields": {
              "IKS": {
                "type": "text",
                "analyzer": "ikIndexAnalyzer"
              }
            }
          }

@Column(name = "标签")
    @MultiField(
            mainField = @Field(type = FieldType.Keyword),
            otherFields = {
                    @InnerField(suffix = "IKS", type = FieldType.Text, analyzer = "ikIndexAnalyzer")
            }
    )
    protected String label;