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": "*国歌"
}
{
"tokens": [
{
"token": "*",
"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
}
]
}