接著上節： http://www.cnblogs.com/spectrelb/p/7977051.html

短語搜索

找出一個屬性中的獨立單詞是沒有問題的，但有時候想要精確匹配一系列單詞或者短語 。 比如， 我們想執行這樣一個查詢，僅匹配同時包含 “rock” 和 “climbing” ，並且 二者以短語 “rock climbing” 的形式緊挨著的雇員記錄。

為此對 match 查詢稍作調整，使用一個叫做 match_phrase 的查詢

GET /megacorp/employee/_search
{
  "query": {
    "match_phrase": {
      "about": "rock climbing"
    }
  }
}

　結果：

{
  "took": 8,
  "timed_out": false,
  "_shards": {
    "total": 5,
    "successful": 5,
    "failed": 0
  },
  "hits": {
    "total": 1,
    "max_score": 0.53484553,
    "hits": [
      {
        "_index": "megacorp",
        "_type": "employee",
        "_id": "1",
        "_score": 0.53484553,
        "_source": {
          "first_name": "John",
          "last_name": "Smith",
          "age": 25,
          "about": "I love to go rock climbing",
          "interests": [
            "sports",
            "music"
          ]
        }
      }
    ]
  }
}

高亮搜索

許多應用都傾向於在每個搜索結果中 高亮 部分文本片段，以便讓用戶知道為何該文檔符合查詢條件。在 Elasticsearch 中檢索出高亮片段也很容易。

再次執行前面的查詢，並增加一個新的 highlight 參數

GET /megacorp/employee/_search
{
  "query": {
    "match_phrase": {
      "about": "rock climbing"
    }
  },
  "highlight": {
    "fields" : {
      "about" : {}
    }
  }
}

結果：

{
  "took": 27,
  "timed_out": false,
  "_shards": {
    "total": 5,
    "successful": 5,
    "failed": 0
  },
  "hits": {
    "total": 1,
    "max_score": 0.53484553,
    "hits": [
      {
        "_index": "megacorp",
        "_type": "employee",
        "_id": "1",
        "_score": 0.53484553,
        "_source": {
          "first_name": "John",
          "last_name": "Smith",
          "age": 25,
          "about": "I love to go rock climbing",
          "interests": [
            "sports",
            "music"
          ]
        },
        "highlight": {
          "about": [
            "I love to go <em>rock</em> <em>climbing</em>"
          ]
        }
      }
    ]
  }
}

短語搜索，高亮搜索