ElasticSearch(7.2.2)-搜索的简单使⽤

搜索的简单使⽤

准备⼯作

删掉nba索引
- DELETE localhost:9200/nba
新建⼀个索引,并且指定mapping
- PUT localhost:9200/nba

{"mappings": {"properties": {"name": {"type": "text"},"team_name": {"type": "text"},"position": {"type": "text"},"play_year": {"type": "long"},"jerse_no": {"type": "keyword"}}}
}

新增document

PUT localhost:9200/nba/_doc/1

{"name": "哈登","team_name": "⽕箭","position": "得分后卫","play_year": 10,"jerse_no": "13"
}

PUT localhost:9200/nba/_doc/2

{"name": "库⾥","team_name": "勇⼠","position": "控球后卫","play_year": 10,"jerse_no": "30"
}

PUT localhost:9200/nba/_doc/3

{"name": "詹姆斯","team_name": "湖⼈","position": "⼩前锋","play_year": 15,"jerse_no": "23"
}

term(词条)查询和full text(全⽂)查询

词条查询：词条查询不会分析查询条件，只有当词条和查询字符串完全匹配时，才匹配搜索。
全⽂查询：ElasticSearch引擎会先分析查询字符串，将其拆分成多个分词，只要已分析的字段中包含词条的任意⼀个，或全部包含，就匹配查询条件，返回该⽂档；如果不包含任意⼀个分词，表示没有任何⽂档匹配查询条件

单条term查询

POST localhost:9200/nba/_search

{"query": {"term": {"jerse_no": "23"}}
}

多条term查询

POST localhost:9200/nba/_search

{"query": {"terms": {"jerse_no": ["23","13"]}}
}

{"took": 21,"timed_out": false,"_shards": {"total": 1,"successful": 1,"skipped": 0,"failed": 0},"hits": {"total": {"value": 2,"relation": "eq"},"max_score": 1,"hits": [{"_index": "nba","_type": "_doc","_id": "1","_score": 1,"_source": {"name": "哈登","team_name": "⽕箭","position": "得分后卫","play_year": 10,"jerse_no": "13"}},{"_index": "nba","_type": "_doc","_id": "3","_score": 1,"_source": {"name": "詹姆斯","team_name": "湖⼈","position": "⼩前锋","play_year": 15,"jerse_no": "23"}}]}
}

match_all

POST localhost:9200/nba/_search

{"query": {"match_all": {}},"from": 0,"size": 10
}

{"took": 9,"timed_out": false,"_shards": {"total": 1,"successful": 1,"skipped": 0,"failed": 0},"hits": {"total": {"value": 3,"relation": "eq"},"max_score": 1,"hits": [{"_index": "nba","_type": "_doc","_id": "1","_score": 1,"_source": {"name": "哈登","team_name": "⽕箭","position": "得分后卫","play_year": 10,"jerse_no": "13"}},{"_index": "nba","_type": "_doc","_id": "2","_score": 1,"_source": {"name": "库⾥","team_name": "勇⼠","position": "控球后卫","play_year": 10,"jerse_no": "30"}},{"_index": "nba","_type": "_doc","_id": "3","_score": 1,"_source": {"name": "詹姆斯","team_name": "湖⼈","position": "⼩前锋","play_year": 15,"jerse_no": "23"}}]}
}

match

POST localhost:9200/nba/_search

{"query": {"match": {"position": "后卫"}}
}

{"took": 89,"timed_out": false,"_shards": {"total": 1,"successful": 1,"skipped": 0,"failed": 0},"hits": {"total": {"value": 2,"relation": "eq"},"max_score": 0.90630186,"hits": [{"_index": "nba","_type": "_doc","_id": "1","_score": 0.90630186,"_source": {"name": "哈登","team_name": "⽕箭","position": "得分后卫","play_year": 10,"jerse_no": "13"}},{"_index": "nba","_type": "_doc","_id": "2","_score": 0.90630186,"_source": {"name": "库⾥","team_name": "勇⼠","position": "控球后卫","play_year": 10,"jerse_no": "30"}}]}
}

multi_match

POST localhost:9200/nba/_update/2

{"doc": {"name": "库⾥","team_name": "勇⼠","position": "控球后卫","play_year": 10,"jerse_no": "30","title": "the best shooter"}
}

POST localhost:9200/nba/_search

{"query": {"multi_match": {"query": "shooter","fields": ["title", "name"]}}
}

{"query": {"multi_match": {"query": "shooter","fields": ["*title", "name"]}}
}

match_phrase

post localhost:9200/nba/_search

{"query": {"match_phrase": {"position": "得分后卫"}}
}

{"took": 4,"timed_out": false,"_shards": {"total": 1,"successful": 1,"skipped": 0,"failed": 0},"hits": {"total": {"value": 1,"relation": "eq"},"max_score": 3.0384295,"hits": [{"_index": "nba","_type": "_doc","_id": "1","_score": 3.0384295,"_source": {"name": "哈登","team_name": "⽕箭","position": "得分后卫","play_year": 10,"jerse_no": "13"}}]}
}

match_phrase_prefix

POST localhost:9200/nba/_update/3

{"doc": {"name": "詹姆斯","team_name": "湖⼈","position": "⼩前锋","play_year": 15,"jerse_no": "23","title": "the best small forward"}
}

POST localhost:9200/nba/_search

{"query": {"match_phrase_prefix": {"title": "the best s"}}
}

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ElasticSearch(7.2.2)-搜索的简单使⽤

准备⼯作

新增document

term(词条)查询和full text(全⽂)查询

单条term查询

多条term查询

match_all

match

multi_match

match_phrase

match_phrase_prefix

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