elasticsearch安装ik模块（中文分词器）

下载和elasticsearch版本对应的软件包

wget https://github.com/medcl/elasticsearch-analysis-ik/archive/v5.6.8.zip

创建ik目录

cd /data/tools/elasticsearch-5.6.8/plugins/
mkdir ik

将文件解压到ik目录下

unzip elasticsearch-analysis-ik-5.6.8.zip
cp elasticsearch-analysis-ik-5.6.8/* 、/data/tools/elasticsearch-5.6.8/plugins/ik/

查看文件:

[root@xxxx ik]# ll
总用量 1428
-rw-r--r-- 1 elasticsearch elasticsearch 263965 7月   2 2015 commons-codec-1.9.jar
-rw-r--r-- 1 elasticsearch elasticsearch  61829 7月   2 2015 commons-logging-1.2.jar
drwxr-xr-x 2 elasticsearch elasticsearch   4096 11月 15 2017 config
-rw-r--r-- 1 elasticsearch elasticsearch  51384 3月   5 15:25 elasticsearch-analysis-ik-5.6.8.jar
-rw-r--r-- 1 elasticsearch elasticsearch 736658 8月  14 2016 httpclient-4.5.2.jar
-rw-r--r-- 1 elasticsearch elasticsearch 326724 8月  14 2016 httpcore-4.4.4.jar
drwxrwxr-x 3 elasticsearch elasticsearch   4096 6月   5 14:35 pinyin
-rw-r--r-- 1 elasticsearch elasticsearch   2666 3月   5 15:26 plugin-descriptor.propert

由于IK插件直接是现场jar包，所以重启elasticsearch就可以加载了

测试：

curl -XGET 'http://127.0.0.1:9200/_analyze?pretty&analyzer=ik_max_word' -d '联想是全球最大的笔记本厂商'
{
  "tokens" : [
    {
      "token" : "联想",
      "start_offset" : 0,
      "end_offset" : 2,
      "type" : "CN_WORD",
      "position" : 0
    },
    {
      "token" : "是",
      "start_offset" : 2,
      "end_offset" : 3,
      "type" : "CN_CHAR",
      "position" : 1
    },
    {
      "token" : "全球",
      "start_offset" : 3,
      "end_offset" : 5,
      "type" : "CN_WORD",
      "position" : 2
    },
    {
      "token" : "最大",
      "start_offset" : 5,
      "end_offset" : 7,
      "type" : "CN_WORD",
      "position" : 3
    },
    {
      "token" : "的",
      "start_offset" : 7,
      "end_offset" : 8,
      "type" : "CN_CHAR",
      "position" : 4
    },
    {
      "token" : "笔记本",
      "start_offset" : 8,
      "end_offset" : 11,
      "type" : "CN_WORD",
      "position" : 5
    },
    {
      "token" : "笔记",
      "start_offset" : 8,
      "end_offset" : 10,
      "type" : "CN_WORD",
      "position" : 6
    },
    {
      "token" : "本厂",
      "start_offset" : 10,
      "end_offset" : 12,
      "type" : "CN_WORD",
      "position" : 7
    },
    {
      "token" : "厂商",
      "start_offset" : 11,
      "end_offset" : 13,
      "type" : "CN_WORD",
      "position" : 8
    }
  ]
}