ElasticSearch13:高亮查询

高亮查询

高亮的前提时进行分词，type为text。这里description就是text

# 查看索引映射信息
GET /products/_mapping

# 高亮。高亮的前提时进行分词，type为text
GET /products/_search
{
  "query": {
    "query_string": {
      "default_field": "description",
      "query": "雪融融"
    }
  },
  "highlight": {
    "fields": {
      "*":{}
    }
  }
}

#自定义高亮
GET /products/_search
{
  "query": {
    "query_string": {
      "default_field": "description",
      "query": "雪融融"
    }
  },
  "highlight": {
    "pre_tags": ["<span style='color:red;'>"], 
    "post_tags": ["</span>"], 
    "require_field_match": "false", 
    "fields": {
      "*":{}
    }
  }
}

返回指定条数[size]

指定查询结果中返回指定条数。默认是10条

# 指定条数
GET /products/_search
{
  "query": {
    "query_string": {
      "default_field": "description",
      "query": "雪融融"
    }
  },
  "highlight": {
    "fields": {
      "*":{}
    }
  },
  "size": 1
}

分页查询[form]

(page-1)*size

# 指定条数
GET /products/_search
{
  "query": {
    "query_string": {
      "default_field": "description",
      "query": "雪融融"
    }
  },
  "highlight": {
    "fields": {
      "*":{}
    }
  },
  "from": 0, 
  "size": 10,
}

指定字段排序[sort]

des降序，asc升序

# 排序
GET /products/_search
{
  "query": {
    "query_string": {
      "default_field": "description",
      "query": "雪融融"
    }
  },
  "highlight": {
    "fields": {
      "*":{}
    }
  },
  "from": 0, 
  "size": 10,
  "sort": [
    {
      "price": {
        "order": "desc"
      }
    }
  ]
}

返回指定字段[_source]

_source是一个数组，在数组中用来指定展示哪些字段

# 指定字段查询
GET /products/_search
{
  "query": {
    "query_string": {
      "default_field": "description",
      "query": "雪融融"
    }
  },
  "highlight": {
    "fields": {
      "*":{}
    }
  },
  "from": 0, 
  "size": 10,
  "sort": [
    {
      "price": {
        "order": "desc"
      }
    }
  ],
  "_source": ["id","title","description"]