elasticesearch搜索返回高亮關鍵字

• pre_tags 前綴標簽
• post_tags 后綴標簽
• tags_schema 設置為styled可以使用內置高亮樣式
• require_field_match 多字段高亮需要設置為false

使用highlight為查詢結果增加高亮效果

{
  "query": {
    "bool": {
      "must": [
        {"match": {"name":"牛仔"}}
      ]
    }
  },
  "highlight": {
    "fields": {
      "name": {}
    }
  }
}

默認使用<em>標簽包裹高亮字段

"hits" : [
      {
        "_index" : "idx_product",
        "_type" : "_doc",
        "_id" : "eZfUTXEBZypi2P-SpqrE",
        "_score" : 0.88044095,
        "_source" : {
          "proId" : "2",
          "name" : "牛仔男外套",
          "desc" : "牛仔外套男裝春季衣服男春裝夾克修身休閑男生潮牌工裝潮流頭號青年春秋棒球服男 7705淺藍常規 XL",
          "timestamp" : 1576313264451,
          "createTime" : "2019-12-13 12:56:56"
        },
        "highlight" : {"name" : ["<em>牛仔</em>男外套"]}
      },
      {
        "_index" : "idx_product",
        "_type" : "_doc",
        "_id" : "fZfXTXEBZypi2P-SPqrD",
        "_score" : 0.62191015,
        "_source" : {
          "proId" : "6",
          "name" : "HLA海瀾之家牛仔褲男",
          "desc" : "HLA海瀾之家牛仔褲男2019時尚有型舒適HKNAD3E109A 牛仔藍(A9)175/82A(32)",
          "timestamp" : 1576314265571,
          "createTime" : "2019-12-18 15:56:56"
        },
        "highlight" : {"name" : ["HLA海瀾之家<em>牛仔</em>褲男"]}
      }
    ]

使用tag_schema:styled可以使用es內置高亮樣式

{
  "query": {
    "bool": {
      "must": [
        {"term": {"name":"牛仔"}}
      ]
    }
  },
  "highlight": {
    "tags_schema": "styled", 
    "fields": {
      "name": {}
    }
  }
}

"highlight" : {
          "name" : ["""<em class="hlt1">牛仔</em>男外套"""]
        }
"highlight" : {
          "name" : ["""HLA海瀾之家<em class="hlt1">牛仔</em>褲男"""]
        }
        

highlight默認只支持單個屬性高亮，使用require_field_match屬性置為false則可以使所有屬性高亮

{
  "query": {
    "bool": {
      "must": [
        {"term": {"name":"牛仔"}}]
    }
  },
  "highlight": {
    "pre_tags": ["<font color='red'>"],
    "post_tags": ["<font/>"],
    "require_field_match": "false", 
    "fields": {
      "name": {},
      "desc": {}
    }
  }
}

"hits" : [
      {
        "_index" : "idx_product",
        "_type" : "_doc",
        "_id" : "eZfUTXEBZypi2P-SpqrE",
        "_score" : 0.88044095,
        "_source" : {
          "proId" : "2",
          "name" : "牛仔男外套",
          "desc" : "牛仔外套男裝春季衣服男春裝夾克修身休閑男生潮牌工裝潮流頭號青年春秋棒球服男 7705淺藍常規 XL",
          "timestamp" : 1576313264451,
          "createTime" : "2019-12-13 12:56:56"
        },
        "highlight" : {
          "name" : [
            "<font color='red'>牛仔<font/>男外套"
          ],
          "desc" : [
            "<font color='red'>牛仔<font/>外套男裝春季衣服男春裝夾克修身休閑男生潮牌工裝潮流頭號青年春秋棒球服男 7705淺藍常規 XL"
          ]
        }
      },
      {
        "_index" : "idx_product",
        "_type" : "_doc",
        "_id" : "fZfXTXEBZypi2P-SPqrD",
        "_score" : 0.62191015,
        "_source" : {
          "proId" : "6",
          "name" : "HLA海瀾之家牛仔褲男",
          "desc" : "HLA海瀾之家牛仔褲男2019時尚有型舒適HKNAD3E109A 牛仔藍(A9)175/82A(32)",
          "timestamp" : 1576314265571,
          "createTime" : "2019-12-18 15:56:56"
        },
        "highlight" : {
          "name" : [
            "HLA海瀾之家<font color='red'>牛仔<font/>褲男"
          ],
          "desc" : [
            "HLA海瀾之家<font color='red'>牛仔<font/>褲男2019時尚有型舒適HKNAD3E109A <font color='red'>牛仔<font/>藍(A9)175/82A(32)"
          ]
        }
      }
    ]