Get API

　　查询索引为twitter,索引类型为tweet，id为1的数据。

curl -XGET 'http://localhost:9200/twitter/tweet/1'

　　查询结果返回为：

{
    "_index" : "twitter",
    "_type" : "tweet",
    "_id" : "1",
    "_version" : 1,
    "found": true,
    "_source" : {
        "user" : "kimchy",
        "postDate" : "2009-11-15T14:12:12",
        "message" : "trying out Elasticsearch"
    }
}