Elasticsearch之CURL命令的HEAD

 　　如果只想检查一些文档是否存在，我们可以使用HEAD来替代GET方法，这样就只会返回HTTP头文件。

[hadoop@master elasticsearch-2.4.0]$ curl -i XHEAD http://master:9200/zhouls/user/1
curl: (6) Couldn't resolve host 'XHEAD'
HTTP/1.1 200 OK
Content-Type: application/json; charset=UTF-8
Content-Length: 112

{"_index":"zhouls","_type":"user","_id":"1","_version":1,"found":true,"_source":{"name" : "john"  , "age" : 28}}[hadoop@master elasticsearch-2.4.0]$ 
[hadoop@master elasticsearch-2.4.0]$