Elasticsearch之CURL命令的GET

　　这是个查询命令。

前期博客

Elasticsearch之CURL命令的PUT和POST对比

　　1、

　　以上是根据员工id查询。

　　即在任意的查询字符串中添加pretty参数，es可以得到易于我们识别的json结果。（这一点必须要会）

[hadoop@master elasticsearch-2.4.]$ curl -XGET http://master:9200/zhouls/user/1
{"_index":"zhouls","_type":"user","_id":"","_version":,"found":true,"_source":{"name" : "john"  , "age" : }}[hadoop@master elasticsearch-2.4.]$
[hadoop@master elasticsearch-2.4.]$
[hadoop@master elasticsearch-2.4.]$ curl -XGET http://master:9200/zhouls/user/1?pretty
{
  "_index" : "zhouls",
  "_type" : "user",
  "_id" : "",
  "_version" : ,
  "found" : true,
  "_source" : {
    "name" : "john",
    "age" :
  }
}
[hadoop@master elasticsearch-2.4.]$
[hadoop@master elasticsearch-2.4.]$ 

　　2、由此，可见，检索文档中的一部分，可以只查询，只需要显式部分字段。

[hadoop@master elasticsearch-2.4.]$ curl -XGET 'http://master:9200/zhouls/user/1?_source=name,age&pretty'
{
  "_index" : "zhouls",
  "_type" : "user",
  "_id" : "",
  "_version" : ,
  "found" : true,
  "_source" : {
    "age" : ,
    "name" : "john"
  }
}
[hadoop@master elasticsearch-2.4.]$ curl -XGET 'http://master:9200/zhouls/user/1?_source=name&pretty'
{
  "_index" : "zhouls",
  "_type" : "user",
  "_id" : "",
  "_version" : ,
  "found" : true,
  "_source" : {
    "name" : "john"
  }
}
[hadoop@master elasticsearch-2.4.]$ 

　　3、查询指定索引库的指定类型的所有数据

[hadoop@master elasticsearch-2.4.]$ curl -XGET 'http://master:9200/zhouls/user/_search'
{"took":,"timed_out":false,"_shards":{"total":,"successful":,"failed":},"hits":{"total":,"max_score":1.0,"hits":[{"_index":"zhouls","_type":"user","_id":"","_score":1.0,"_source":{"name" : "john"  , "age" : }},{"_index":"zhouls","_type":"user","_id":"","_score":1.0,"_source":{"name" : "john"  , "age" : }},{"_index":"zhouls","_type":"user","_id":"AVz5Q9u7U8bDb6QDgbDS","_score":1.0,"_source":{"name" : "john"}},{"_index":"zhouls","_type":"user","_id":"","_score":1.0,"_source":{"name" : "john"  , "age" : }}]}}[hadoop@master elasticsearch-2.4.]$
[hadoop@master elasticsearch-2.4.]$
[hadoop@master elasticsearch-2.4.]$ curl -XGET 'http://master:9200/zhouls/user/_search?pretty'
{
  "took" : ,
  "timed_out" : false,
  "_shards" : {
    "total" : ,
    "successful" : ,
    "failed" :
  },
  "hits" : {
    "total" : ,
    "max_score" : 1.0,
    "hits" : [ {
      "_index" : "zhouls",
      "_type" : "user",
      "_id" : "",
      "_score" : 1.0,
      "_source" : {
        "name" : "john",
        "age" :
      }
    }, {
      "_index" : "zhouls",
      "_type" : "user",
      "_id" : "",
      "_score" : 1.0,
      "_source" : {
        "name" : "john",
        "age" :
      }
    }, {
      "_index" : "zhouls",
      "_type" : "user",
      "_id" : "AVz5Q9u7U8bDb6QDgbDS",
      "_score" : 1.0,
      "_source" : {
        "name" : "john"
      }
    }, {
      "_index" : "zhouls",
      "_type" : "user",
      "_id" : "",
      "_score" : 1.0,
      "_source" : {
        "name" : "john",
        "age" :
      }
    } ]
  }
}
[hadoop@master elasticsearch-2.4.]$ 

　　4、根据条件进行查询

[hadoop@master elasticsearch-2.4.]$ curl -XGET 'http://master:9200/zhouls/user/_search?q=name:john'
{"took":,"timed_out":false,"_shards":{"total":,"successful":,"failed":},"hits":{"total":,"max_score":1.0,"hits":[{"_index":"zhouls","_type":"user","_id":"","_score":1.0,"_source":{"name" : "john"  , "age" : }},{"_index":"zhouls","_type":"user","_id":"AVz5Q9u7U8bDb6QDgbDS","_score":1.0,"_source":{"name" : "john"}},{"_index":"zhouls","_type":"user","_id":"","_score":0.30685282,"_source":{"name" : "john"  , "age" : }},{"_index":"zhouls","_type":"user","_id":"","_score":0.30685282,"_source":{"name" : "john"  , "age" : }}]}}[hadoop@master elasticsearch-2.4.]$
[hadoop@master elasticsearch-2.4.]$
[hadoop@master elasticsearch-2.4.]$ curl -XGET 'http://master:9200/zhouls/user/_search?q=age:28'
{"took":,"timed_out":false,"_shards":{"total":,"successful":,"failed":},"hits":{"total":,"max_score":1.4054651,"hits":[{"_index":"zhouls","_type":"user","_id":"","_score":1.4054651,"_source":{"name" : "john"  , "age" : }},{"_index":"zhouls","_type":"user","_id":"","_score":0.30685282,"_source":{"name" : "john"  , "age" : }},{"_index":"zhouls","_type":"user","_id":"","_score":0.30685282,"_source":{"name" : "john"  , "age" : }}]}}[hadoop@master elasticsearch-2.4.]$
[hadoop@master elasticsearch-2.4.]$
[hadoop@master elasticsearch-2.4.]$ 

官网

https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-get.html