eslasticsearch多种常用搜索方式

最新推荐文章于 2025-02-21 14:39:32 发布

Serena0814

最新推荐文章于 2025-02-21 14:39:32 发布

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分类专栏：实习文章标签： elasticsearch

本文链接：https://blog.youkuaiyun.com/Serena0814/article/details/96622298

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本文介绍了Elasticsearch的两种主要搜索方式：Query String Search和Query DSL。在Query String Search中，展示了搜索所有商品和按名称及价格排序的示例。而在Query DSL部分，讲解了match_all查询、全文索引、短语搜索、term查询、查询过滤、范围查询、布尔查询以及聚合查询的用法，每个查询类型都有具体的实例演示。

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一、Query String Search(‘Query String’方式的搜索)

1.搜索全部商品

GET /shop_index/productInfo/_search

返回结果：

{
   
  "took": 8,
  "timed_out": false,
  "_shards": {
   
    "total": 5,
    "successful": 5,
    "skipped": 0,
    "failed": 0
  },
  "hits": {
   
    "total": 3,
    "max_score": 1,
    "hits": [
      {
   
        "_index": "shop_index",
        "_type": "productInfo",
        "_id": "2",
        "_score": 1,
        "_source": {
   
          "test": "test"
        }
      },
      {
   
        "_index": "shop_index",
        "_type": "productInfo",
        "_id": "zyWpRGkB8mgaHjxk0Hfo",
        "_score": 1,
        "_source": {
   
          "name": "HuaWei P20",
          "desc": "Expen but easy to use",
          "price": 5300,
          "producer": "HuaWei Producer",
          "tags": [
            "Expen",
            "Fast"
          ]
        }
      },
      {
   
        "_index": "shop_index",
        "_type": "productInfo",
        "_id": "1",
        "_score": 1,
        "_source": {
   
          "name": "HuaWei Mate8",
          "desc": "Cheap and easy to use",
          "price": 2500,
          "producer": "HuaWei Producer",
          "tags": [
            "Cheap",
            "Fast"
          ]
        }
      }
    ]
  }
}

字段解释：

took:耗费了几毫秒
timed_out:是否超时，这里是没有
_shards:数据被拆到了5个分片上，搜索时使用了5个分片，5个分片都成功地返回了数据，失败了0个，跳过了0个
hits.total:查询结果的数量，3个document
max_score:就是document对于一个search的相关度的匹配分数，越相关，就越匹配，分数也越高
hits.hits:包含了匹配搜索的document的详细数据
_source:数据

2.搜索商品名称中包含HuaWei的商品，而且按照售价降序排序：

下面这种方法也是"Query String Search"的由来，因为search参数都是以http请求的query string来附带的.

GET /shop_index/productInfo/_search?q=name:HuaWei&sort=price:desc

返回结果：

{
   
  "took": 23,
  "timed_out": false,
  "_shards": {
   
    "total": 5,
    "successful": 5,
    "skipped": 0,
    "failed": 0
  },
  "hits": {
   
    "total": 2,
    "max_score": null,
    "hits": [
      {
   
        "_index": "shop_index",
        "_type": "productInfo",
        "_id": "zyWpRGkB8mgaHjxk0Hfo",
        "_score": null,
        "_source": {
   
          "name": "HuaWei P20",
          "desc": "Expen but easy to use",
          "price": 5300,
          "producer": "HuaWei Producer",
          "tags": [
            "Expen",
            "Fast"
          ]
        },
        "sort": [

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