elasticsearch 中文分词(elasticsearch-analysis-ik)安装

在elasticsearch的plugins目录下，创建ik目录

cd /usr/local/elasticsearch-6.3.0/plugins

mkdir ik

将解压的内容，放入其中

重新启动elasticsearch服务

elasticsearch restart

这个时候中文分词就生效了，数据重新插入即可

GET /megacorp/employee/_search

{

"query" : {

"match" : {

"about" : "程序员 编程"

}

}

}

搜索结果

{

"took": 8,

"timed_out": false,

"_shards": {

"total": 5,

"successful": 5,

"skipped": 0,

"failed": 0

},

"hits": {

"total": 1,

"max_score": 1.654172,

"hits": [

{

"_index": "megacorp",

"_type": "employee",

"_id": "2",

"_score": 1.654172,

"_source": {

"first_name": "张",

"last_name": "三",

"age": 24,

"about": "一个PHP程序员，热爱编程，热爱生活，充满激情。",

"interests": [

"英雄联盟"

]

}

}

]

}

}

或者通过(elasticsearch-plugin)在线安装，速度有点慢。

./bin/elasticsearch-plugin install https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v6.3.0/elasticsearch-analysis-ik-6.3.0.zip

-> Downloading https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v6.3.0/elasticsearch-analysis-ik-6.3.0.zip

[=================================================] 100%??

-> Installed analysis-ik

发现多了一个文件夹

使用

GET _analyze?pretty

{

"analyzer": "ik_smart",

"text": "中华人民共和国国歌"

}

{

"tokens": [

{

"token": "中华人民共和国",

"start_offset": 0,

"end_offset": 7,

"type": "CN_WORD",

"position": 0

},

{

"token": "国歌",

"start_offset": 7,

"end_offset": 9,

"type": "CN_WORD",

"position": 1

}

]

}

再一个例子

GET _analyze?pretty

{

"analyzer": "ik_smart",

"text": "王者荣耀是最好玩的游戏"

}

{

"tokens": [

{

"token": "王者",

"start_offset": 0,

"end_offset": 2,

"type": "CN_WORD",

"position": 0

},

{

"token": "荣耀",

"start_offset": 2,

"end_offset": 4,

"type": "CN_WORD",

"position": 1

},

{

"token": "是",

"start_offset": 4,

"end_offset": 5,

"type": "CN_CHAR",

"position": 2

},

{

"token": "最",

"start_offset": 5,

"end_offset": 6,

"type": "CN_CHAR",

"position": 3

},

{

"token": "好玩",

"start_offset": 6,

"end_offset": 8,

"type": "CN_WORD",

"position": 4

},

{

"token": "的",

"start_offset": 8,

"end_offset": 9,

"type": "CN_CHAR",

"position": 5

},

{

"token": "游戏",

"start_offset": 9,

"end_offset": 11,

"type": "CN_WORD",

"position": 6

}

]

}