ElasticSearch术语聚合

实际上，您应该像这样更改映射

"os_name": {  "type": "string",  "fields": {     "raw": {        "type": "string",        "index": "not_analyzed"     }  }},

并且您的aggs应该更改为：

GET /temp/example/_search{  "size": 0,  "aggs": {     "OS": {       "terms": {"field": "os_name.raw"       }     }  }}