elasticsearch支持中文分词Ik安装文档如下：
1.下载安装包
插件git地址：https://github.com/medcl/elasticsearch-analysis-ik/releases
插件下载地址：https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v5.3.0/elasticsearch-analysis-ik-5.3.0.zip
2、在elasticsearch中创建ik的安装目录
[root@elasticsearch-01 ]# mkdir /usr/local/elasticsearch/plugins/ik
[root@elasticsearch-01 ]# cd /usr/local/elasticsearch/plugins/ik
[root@elasticsearch-01 ik]# wget https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v5.3.0/elasticsearch-analysis-ik-5.3.0.zip
[root@elasticsearch-01 ik]# unzip -x elasticsearch-analysis-ik-5.0.2.zip
[root@elasticsearch-01 ik]# yum -y install tree
[root@elasticsearch-01 ik]# tree -F -t -L 3
.
├── plugin-descriptor.properties
├── elasticsearch-analysis-ik-5.3.0.jar
├── commons-codec-1.9.jar
├── commons-logging-1.2.jar
├── httpclient-4.5.2.jar
├── httpcore-4.4.4.jar
└── config/
├── custom/
│ ├── ext_stopword.dic
│ ├── mydict.dic
│ ├── single_word.dic
│ ├── single_word_full.dic
│ ├── single_word_low_freq.dic
│ └── sougou.dic
├── IKAnalyzer.cfg.xml
├── main.dic
├── preposition.dic
├── quantifier.dic
├── stopword.dic
├── suffix.dic
└── surname.dic
2 directories, 19 files
3.重启elasticsearch
[root@elasticsearch-01 ik]# systemctl restart elasticsearch.service
[root@elasticsearch-01 ik]# systemctl status elasticsearch.service
4.验证ik是否可用
[root@elasticsearch-01 ik]# curl -XGET 'http://127.0.0.1:9200/_analyze?pretty&analyzer=ik_max_word' -d '想要查询的中文内容'
