Elasticsearch之CURL命令的mget查询

　　我这里，

　　　　再，创建一个zhouls2的索引库。

[hadoop@master elasticsearch-2.4.]$ curl -XPUT 'http://master:9200/zhouls2/'
{"acknowledged":true}[hadoop@master elasticsearch-2.4.]$
[hadoop@master elasticsearch-2.4.]$ 

　　得到

　　在新创建的索引库zhouls2里，添加一条数据进去。

[hadoop@master elasticsearch-2.4.]$ curl -XPOST http://master:9200/zhouls2/user/1 -d '{"name" : "lucy" , "age" : 18}'
{"_index":"zhouls2","_type":"user","_id":"","_version":,"_shards":{"total":,"successful":,"failed":},"created":true}[hadoop@master elasticsearch-2.4.]$
[hadoop@master elasticsearch-2.4.]$
[hadoop@master elasticsearch-2.4.]$ 

　　得到

　　如下，是我用mget命令，为大家演示，通过xmget命令来获取多个文档

[hadoop@master elasticsearch-2.4.]$ curl -XGET http://master:9200/_mget?pretty -d '{"docs": [{"_index":"zhouls" ,"_type":"user" ,"_id":2 ,"_source":"name"} ,{"_index":"zhouls2" , "_type":"user" ,"_id":1}]}'
{
  "docs" : [ {
    "_index" : "zhouls",
    "_type" : "user",
    "_id" : "",
    "_version" : ,
    "found" : true,
    "_source" : {
      "name" : "john"
    }
  }, {
    "_index" : "zhouls2",
    "_type" : "user",
    "_id" : "",
    "_version" : ,
    "found" : true,
    "_source" : {
      "name" : "lucy",
      "age" :
    }
  } ]
}
[hadoop@master elasticsearch-2.4.]$ 

　　如果我们需要的文档在同一个_index或者同一个_type中，我们就可以在URL中指定一个默认的/_index或者_index/_type。

[hadoop@master elasticsearch-2.4.]$ curl -XGET http://master:9200/zhouls/user/_mget?pretty -d '{"docs": [{"_id":1} ,{"_id":2}] }'
{
  "docs" : [ {
    "_index" : "zhouls",
    "_type" : "user",
    "_id" : "",
    "_version" : ,
    "found" : true,
    "_source" : {
      "name" : "john",
      "age" :
    }
  }, {
    "_index" : "zhouls",
    "_type" : "user",
    "_id" : "",
    "_version" : ,
    "found" : true,
    "_source" : {
      "name" : "john",
      "age" :
    }
  } ]
}
[hadoop@master elasticsearch-2.4.]$ 

　　如果我们的文档拥有相同的_index以及_type，直接在请求中添加ids的数组即可

[hadoop@master elasticsearch-2.4.]$ curl -XGET http://master:9200/zhouls/user/_mget?pretty -d '{"ids":["1" ,"2"]}'
{
  "docs" : [ {
    "_index" : "zhouls",
    "_type" : "user",
    "_id" : "",
    "_version" : ,
    "found" : true,
    "_source" : {
      "name" : "john",
      "age" :
    }
  }, {
    "_index" : "zhouls",
    "_type" : "user",
    "_id" : "",
    "_version" : ,
    "found" : true,
    "_source" : {
      "name" : "john",
      "age" :
    }
  } ]
}
[hadoop@master elasticsearch-2.4.]$ 

　　

　　更多，请见

Elasticsearch增删改查 之 —— mget多文档查询