ES权威指南[官方文档学习笔记]-9 retrieving a document

既然我们在Elasticsearch中有数据了，可以检索。
在es中非常简单，执行一个http的get请求，给定地址参数:index,type,id.

GET /megacorp/employee/1

响应如下：
{
"_index" :   "megacorp",
"_type" :    "employee",
"_id" :      "1",
"_version" : 1,
"found" :    true,
"_source" :  {
"first_name" :  "John",
"last_name" :   "Smith",
"age" :         25,
"about" :       "I love to go rock climbing",
"interests":  [ "sports", "music" ]
}
}