ElasticSearch17:中文分词器IK

中文分词

安装IK

Releases · medcl/elasticsearch-analysis-ik

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https://github.com/medcl/elasticsearch-analysis-ik/releases

Docker中使用IK分词器插件

# 查询ES镜像
root@redis01:~/es-kibana# docker ps
# 进入容器，拿到plugins目录
root@redis01:~/es-kibana# docker exec -it dab88e080a1a bash
elasticsearch@dab88e080a1a:~$ ll
total 912
drwxrwxr-x  1 root          root   4096 Apr 14 07:55 ./
drwxr-xr-x  1 root          root   4096 Mar 30 00:43 ../
-rw-r--r--  1 root          root    220 Mar 30 00:43 .bash_logout
-rw-r--r--  1 root          root   3771 Mar 30 00:43 .bashrc
drwxrwxr-x  3 elasticsearch root   4096 Apr 14 07:55 .cache/
-rw-r--r--  1 root          root    807 Mar 30 00:43 .profile
-r--r--r--  1 root          root   3860 Mar 29 21:18 LICENSE.txt
-r--r--r--  1 root          root 858797 Mar 29 21:22 NOTICE.txt
-r--r--r--  1 root          root   2710 Mar 29 21:18 README.asciidoc
drwxrwxr-x  1 elasticsearch root   4096 Mar 30 00:42 bin/
drwxrwxr-x  4 elasticsearch root   4096 Apr 14 06:43 config/
drwxrwxr-x  5 elasticsearch root   4096 Apr 15 02:49 data/
dr-xr-xr-x  1 root          root   4096 Mar 29 21:25 jdk/
dr-xr-xr-x  3 root          root   4096 Mar 29 21:25 lib/
drwxrwxr-x  1 elasticsearch root   4096 Apr 14 07:55 logs/
dr-xr-xr-x 66 root          root   4096 Mar 29 21:25 modules/
drwxrwxr-x  2 elasticsearch root   4096 Mar 29 21:22 plugins/
elasticsearch@dab88e080a1a:~$ cd plugins/
elasticsearch@dab88e080a1a:~/plugins$ pwd
/usr/share/elasticsearch/plugins
elasticsearch@dab88e080a1a:~/plugins$

下载

解压

数据卷挂载

# 关闭当前的es kibana
root@redis01:~/es-kibana# docker compose down
# 编辑docker-compose.yml
root@redis01:~/es-kibana# vim docker-compose.yml

version: "1.0"
volumes:
  data:
  config:
networks: # 声明使用网络
  es:
services:
  elasticsearch:
    image: elasticsearch:8.1.2
    ports:
      - "9200:9200" 
      - "9300:9300" 
    networks: 
      - "es" 
    environment: 
      - "discovery.type=single-node"
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
    volumes:
      - ./elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml
      - data:/usr/share/elasticsearch/data
      - config:/usr/share/elasticsearch/config
      - ./ik-8.1.2:/usr/share/elasticsearch/plugins/ik-8.1.2
  kibana:
    image: kibana:8.1.2
    ports:
      - "5601:5601"
    networks:
      - "es"
    volumes:
      - ./kibana.yml:/usr/share/kibana/config/kibana.yml

启动

#-d 以后台方式启动
root@redis01:~/es-kibana# docker compose up -d

IK使用

• ik_smart:会做最粗颗粒的拆分

• ik_max_word:会将文本做最细颗粒的拆分

POST /_analyze
{
  "analyzer": "ik_smart",
  "text":"中华人民共和国国歌"
}

POST /_analyze
{
  "analyzer": "ik_max_word",
  "text":"中华人民共和国国歌"
}

测试IK分词器

DELETE /test

PUT /test
{
  "mappings":{
    "properties":{
      "title":{
        "type":"text",
        "analyzer":"ik_max_word"
      }
    }
  }
}
PUT /test/_doc/1
{
  "title":"今天是中华人民共和国成立多少周年，应该放中华人民共和国国歌"
}

GET /test/_search
{
  "query": {
    "term": {
      "title": {
        "value": "共和国"
      }
    }
  }
}