6.搜索

1.空搜索

{   "hits" : {      "total" :       14,      "hits" : [        {          "_index":   "us",          "_type":    "tweet",          "_id":      "7",          "_score":   1,          "_source": {             "date":    "2014-09-17",             "name":    "John Smith",             "tweet":   "The Query DSL is really powerful and flexible",             "user_id": 2          }       },        ... 9 RESULTS REMOVED ...      ],      "max_score" :   1   },   "took" :           4,   "_shards" : {      "failed" :      0,      "successful" :  10,      "total" :       10   },   "timed_out" :      false}

2.多索引和多类别

3.分页

4.查询字符串

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