.安装IK分词器
1.在线安装ik插件(较慢)
# 进入容器内部 docker exec -it elasticsearch /bin/bash # 在线下载并安装 ./bin/elasticsearch-plugin install https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v7.12.1/elasticsearch-analysis-ik-7.12.1.zip #退出 exit #重启容器 docker restart elasticsearch
2.离线安装ik插件(推荐)
1)查看数据卷目录
安装插件需要知道elasticsearch的plugins目录位置,而我们用了数据卷挂载,因此需要查看elasticsearch的数据卷目录,通过下面命令查看:
docker volume inspect es-plugins
显示结果:
[{"CreatedAt": "2022-05-06T10:06:34+08:00","Driver": "local","Labels": null,"Mountpoint": "/var/lib/docker/volumes/es-plugins/_data","Name": "es-plugins","Options": null,"Scope": "local"} ]
说明plugins目录被挂载到了:/var/lib/docker/volumes/es-plugins/_data
这个目录中。
2)解压缩分词器安装包
下面我们需要把课前资料中的ik分词器解压缩,重命名为ik
链接:https://pan.baidu.com/s/1KLi71wyX4Znq7GE0jCRUUg?pwd=a3km
提取码:a3km
3)上传到es容器的插件数据卷中
也就是/var/lib/docker/volumes/es-plugins/_data
:
把解压的文件拉到数据卷中:
4)重启容器
# 4、重启容器 docker restart es
# 查看es日志 docker logs -f es
5)测试:
IK分词器包含两种模式:
-
ik_smart
:最少切分 -
ik_max_word
:最细切分
GET /_analyze
{"analyzer": "ik_max_word","text": "北京欢迎你我家大门常打开"
}
结果:
{"tokens" : [{"token" : "北京","start_offset" : 0,"end_offset" : 2,"type" : "CN_WORD","position" : 0},{"token" : "欢迎","start_offset" : 2,"end_offset" : 4,"type" : "CN_WORD","position" : 1},{"token" : "你我","start_offset" : 4,"end_offset" : 6,"type" : "CN_WORD","position" : 2},{"token" : "我家","start_offset" : 5,"end_offset" : 7,"type" : "CN_WORD","position" : 3},{"token" : "大门","start_offset" : 7,"end_offset" : 9,"type" : "CN_WORD","position" : 4},{"token" : "常打","start_offset" : 9,"end_offset" : 11,"type" : "CN_WORD","position" : 5},{"token" : "打开","start_offset" : 10,"end_offset" : 12,"type" : "CN_WORD","position" : 6}]
}
扩展词词典和停用词词典
1)打开IK分词器config目录:
2)在IKAnalyzer.cfg.xml配置文件内容添加并创建文件:
3)重启elasticsearch
docker restart es
完事