1、_source元数据
查看示例:
----------------------------------保存数据------------------------------------------
PUT /test_index/test_type/1
{
"test_field1": "test field1",
"test_field2": "test field2"
}
----------------------------------保存数据------------------------------------------
GET /test_index/test_type/1
----------------------------------查询结果------------------------------------------
{
"_index": "test_index",
"_type": "test_type",
"_id": "1",
"_version": 1,
"found": true,
"_source": {
"test_field1": "test field1",
"test_field2": "test field2"
}
}
_source元数据:就是说,我们在创建一个document的时候,使用的那个放在request body中的json串,默认情况下,在get的时候,会原封不动的给我们返回回来。
2、_source定制返回结果
定制返回的结果,指定_source中,返回哪些field
----------------------------------_source查询数据-------------------------------
GET /test_index/test_type/1?_source=test_field2
----------------------------------查询结果------------------------------------------
{
"_index": "test_index",
"_type": "test_type",
"_id": "1",
"_version": 1,
"found": true,
"_source": {
"test_field2": "test field2"
}
}
----------------------------------------------------------------------------------------
----------------source多个field查询,field之间用逗号隔开----------------
GET /test_index/test_type/1?_source=test_field2,test_field1
----------------------------------查询结果------------------------------------------
{
"_index": "test_index",
"_type": "test_type",
"_id": "1",
"_version": 1,
"found": true,
"_source": {
"test_field1": "test field1",
"test_field2": "test field2"
}
}
网友评论