Elasticsearch 入門（二）安裝中文分詞器Analysis-ik搜索

Elasticsearch 入門（二）中文分詞器Analysis-ik搜索

找到elasticsearch-analysis-ik倉庫

Elasticsearch 常用的中文分詞器Analysis-ik elasticsearch-analysis-ik
gitHub: https://github.com/medcl/elasticsearch-analysis-ik

安裝 elasticsearch-analysis-ik

• 直接下載 https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v7.7.0/elasticsearch-analysis-ik-7.7.0.zip
• 解壓放到之前準備好的/plugins文件夾中 ik目錄下
• docker-compose restart

使用 elasticsearch-analysis-ik

1.create a index

curl -XPUT http://localhost:9200/index

2.create a mapping

curl -XPOST http://localhost:9200/index/_mapping -H 'Content-Type:application/json' -d'
{
        "properties": {
            "content": {
                "type": "text",
                "analyzer": "ik_max_word",
                "search_analyzer": "ik_smart"
            }
        }

}'

3.index some docs

curl -XPOST http://localhost:9200/index/_create/1 -H 'Content-Type:application/json' -d'
{"content":"美國留給伊拉克的是個爛攤子嗎"}
'

curl -XPOST http://localhost:9200/index/_create/2 -H 'Content-Type:application/json' -d'
{"content":"公安部：各地校車將享最高路權"}
'

curl -XPOST http://localhost:9200/index/_create/3 -H 'Content-Type:application/json' -d'
{"content":"中韓漁警衝突調查：韓警平均每天扣1艘中國漁船"}
'

curl -XPOST http://localhost:9200/index/_create/4 -H 'Content-Type:application/json' -d'
{"content":"中國駐洛杉磯領事館遭亞裔男子槍擊 嫌犯已自首"}
'

4.query with highlighting

curl -XPOST http://localhost:9200/index/_search  -H 'Content-Type:application/json' -d'
{
    "query" : { "match" : { "content" : "中國" }},
    "highlight" : {
        "pre_tags" : ["<tag1>", "<tag2>"],
        "post_tags" : ["</tag1>", "</tag2>"],
        "fields" : {
            "content" : {}
        }
    }
}
'

Result

{
    "took": 14,
    "timed_out": false,
    "_shards": {
        "total": 5,
        "successful": 5,
        "failed": 0
    },
    "hits": {
        "total": 2,
        "max_score": 2,
        "hits": [
            {
                "_index": "index",
                "_type": "fulltext",
                "_id": "4",
                "_score": 2,
                "_source": {
                    "content": "中國駐洛杉磯領事館遭亞裔男子槍擊 嫌犯已自首"
                },
                "highlight": {
                    "content": [
                        "<tag1>中國</tag1>駐洛杉磯領事館遭亞裔男子槍擊 嫌犯已自首 "
                    ]
                }
            },
            {
                "_index": "index",
                "_type": "fulltext",
                "_id": "3",
                "_score": 2,
                "_source": {
                    "content": "中韓漁警衝突調查：韓警平均每天扣1艘中國漁船"
                },
                "highlight": {
                    "content": [
                        "均每天扣1艘<tag1>中國</tag1>漁船 "
                    ]
                }
            }
        ]
    }
}