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 对于你想要执行聚合的字段，我会推荐关键字分析器或根本不分析字段。 从关键字分析器文档： 
 
 
 
 类型关键字分析器，将整个流“标记化”为单个标记。 这对于邮政编码，ID等数据非常有用。 请注意，使用映射定义时，将字段标记为not_analyzed可能更有意义。 
 
 
 但是，如果您仍想对该字段执行分析以包含其他搜索，请考虑使用ES 1.x的字段设置。如字段/多字段文档中所述 。 这将允许您获得搜索字段的值和聚合字段的值。 

For fields that you want to perform aggregations on I would recommend either the keyword analyzer or do not analyze the field at all. From the keyword analyzer documentation:
 
 
 
An analyzer of type keyword that "tokenizes" an entire stream as a single token. This is useful for data like zip codes, ids and so on. Note, when using mapping definitions, it might make more sense to simply mark the field as not_analyzed.
 
 
However if you want to still perform analysis on the field to include for other searches, then consider using the field setting of ES 1.x As described in the field/multi_field documentation. This will allow you to have a value of the field for searching and one for aggregations.