前提，
Elasticsearch之cur查询索引
1、根据员工id查询
[hadoop@djt002 elasticsearch-2.4.3]$ curl -XGET 'http://192.168.80.200:9200/zhouls/emp/1'
{"_index":"zhouls","_type":"emp","_id":"1","_version":3,"found":true,"_source":{"name":"tom","age":25}}[hadoop@djt002 elasticsearch-2.4.3]$ [hadoop@djt002 elasticsearch-2.4.3]$ [hadoop@djt002 elasticsearch-2.4.3]$ curl -XGET 'http://192.168.80.200:9200/zhouls/emp/1?pretty'{ "_index" : "zhouls", "_type" : "emp", "_id" : "1", "_version" : 3, "found" : true,"_source" : { "name" : "tom", "age" : 25 }}[hadoop@djt002 elasticsearch-2.4.3]$ curl -XGET 'http://192.168.80.200:9200/zhouls/emp/2?pretty'
{ "_index" : "zhouls", "_type" : "emp", "_id" : "2", "found" : false}在任意的查询字符串中添加pretty参数，es可以得到易于识别的json结果。查得到的结果，是在source里。
2、检索文档中的一部分，如果只需要显示指定字段
[hadoop@djt002 elasticsearch-2.4.3]$ curl -XGET 'http://192.168.80.200:9200/zhouls/emp/1?_source=name,age&pretty'
{ "_index" : "zhouls", "_type" : "emp", "_id" : "1", "_version" : 3, "found" : true,"_source" : { "age" : 25, "name" : "tom" }}[hadoop@djt002 elasticsearch-2.4.3]$ curl -XGET 'http://192.168.80.200:9200/zhouls/emp/1?_source=name&pretty'{ "_index" : "zhouls", "_type" : "emp", "_id" : "1", "_version" : 3, "found" : true,"_source" : { "name" : "tom" }}[hadoop@djt002 elasticsearch-2.4.3]$
3、查询指定索引库指定类型所有数据
这里，指定emp类型。查询它下的所有数据
[hadoop@djt002 elasticsearch-2.4.3]$ curl -XGET 'http://192.168.80.200:9200/zhouls/emp/_search?pretty'
{ "took" : 206, 代表消耗的时间，是206毫秒 "timed_out" : false, 代表是否超时，false代表没有超时 "_shards" : { "total" : 5, "successful" : 5, "failed" : 0 }, "hits" : { 是hits "total" : 4, "max_score" : 1.0, 打分，是1分 "hits" : [ { hits里面，还有hits，在这里面是一个数组 "_index" : "zhouls", "_type" : "emp", "_id" : "AVpdBaixcJQ8qYq5I_Es", "_score" : 1.0, "_source" : { "name" : "tom", "age" : 25 } }, { "_index" : "zhouls", "_type" : "emp", "_id" : "AVpdAus-cJQ8qYq5I_Er", "_score" : 1.0, "_source" : { "name" : "tom", "age" : 25 } }, { "_index" : "zhouls", "_type" : "emp","_id" : "1",
"_score" : 1.0, "_source" : { "name" : "tom", "age" : 25 } }, { "_index" : "zhouls", "_type" : "emp", "_id" : "2_create", "_score" : 1.0, "_source" : { "name" : "tom", "age" : 25 } } ] 一共是4条数据 }}
4、查询指定索引库所有数据
这里，指定zhouls索引库。查询它下的所有数据。一个索引库下有很多种类型，我这里仅emp一种。自己可以新建多种出来进行测验
[hadoop@djt002 elasticsearch-2.4.3]$ curl -XGET 'http://192.168.80.200:9200/zhouls/_search?pretty'
{ "took" : 11, "timed_out" : false, "_shards" : { "total" : 5, "successful" : 5, "failed" : 0 }, "hits" : { "total" : 4, "max_score" : 1.0, "hits" : [ { "_index" : "zhouls", "_type" : "emp", "_id" : "AVpdBaixcJQ8qYq5I_Es", "_score" : 1.0, "_source" : { "name" : "tom", "age" : 25 } }, { "_index" : "zhouls", "_type" : "emp", "_id" : "AVpdAus-cJQ8qYq5I_Er", "_score" : 1.0, "_source" : { "name" : "tom", "age" : 25 } }, { "_index" : "zhouls", "_type" : "emp","_id" : "1",
"_score" : 1.0, "_source" : { "name" : "tom", "age" : 25 } }, { "_index" : "zhouls", "_type" : "emp", "_id" : "2_create", "_score" : 1.0, "_source" : { "name" : "tom", "age" : 25 } } ] }}
总结：
结合自己的经验，一般对于es的简单查询，用crul，对于es的复杂查询，用java代码去实现。