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IK Analysis for ElasticSearch
==================================
The IK Analysis plugin integrates Lucene IK analyzer into elasticsearch, support customized dictionary.
--------------------------------------------------
| IK Analysis Plugin | ElasticSearch |
--------------------------------------------------
| master | 0.19.4 -> master |
--------------------------------------------------
| 1.1.0 | 0.19.4 -> master |
--------------------------------------------------
| 1.0.0 | 0.16.2 -> 0.19.0 |
--------------------------------------------------
Install
-------------
In order to install the plugin, simply run:
<pre>
cd bin
plugin -install medcl/elasticsearch-analysis-ik/1.1.0
</pre>
also download the dict files,unzip these dict file to your elasticsearch's config folder,such as: your-es-root/config/ik
<pre>
cd config
wget http://github.com/downloads/medcl/elasticsearch-analysis-ik/ik.zip --no-check-certificate
unzip ik.zip
rm ik.zip
</pre>
you need a service restart after that!
Dict Configuration (es-root/config/ik/IKAnalyzer.cfg.xml)
-------------
https://github.com/medcl/elasticsearch-analysis-ik/blob/master/config/ik/IKAnalyzer.cfg.xml
<pre>
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE properties SYSTEM "http://java.sun.com/dtd/properties.dtd">
<properties>
<comment>IK Analyzer 扩展配置</comment>
<!--用户可以在这里配置自己的扩展字典 -->
<entry key="ext_dict">custom/mydict.dic;custom/sougou.dict</entry>
<!--用户可以在这里配置自己的扩展停止词字典-->
<entry key="ext_stopwords">custom/ext_stopword.dic</entry>
</properties>
</pre>
Analysis Configuration (elasticsearch.yml)
-------------
<Pre>
index:
analysis:
analyzer:
ik:
alias: [ik_analyzer]
type: org.elasticsearch.index.analysis.IkAnalyzerProvider
</pre>
Or
<pre>
index.analysis.analyzer.ik.type : "ik"
</pre>
Mapping Configuration
-------------
Here is a quick example:
1.create a index
<pre>
curl -XPUT http://localhost:9200/index
</pre>
2.create a mapping
<pre>
curl -XPOST http://localhost:9200/index/fulltext/_mapping -d'
{
"fulltext": {
"_all": {
"indexAnalyzer": "ik",
"searchAnalyzer": "ik",
"term_vector": "no",
"store": "false"
},
"properties": {
"content": {
"type": "string",
"store": "no",
"term_vector": "with_positions_offsets",
"indexAnalyzer": "ik",
"searchAnalyzer": "ik",
"include_in_all": "true",
"boost": 8
}
}
}
}'
</pre>
3.indexing some docs
<pre>
curl -XPOST http://localhost:9200/index/fulltext/1 -d'
{content:"美国留给伊拉克的是个烂摊子吗"}
'
curl -XPOST http://localhost:9200/index/fulltext/2 -d'
{content:"公安部：各地校车将享最高路权"}
'
curl -XPOST http://localhost:9200/index/fulltext/3 -d'
{content:"中韩渔警冲突调查：韩警平均每天扣1艘中国渔船"}
'
curl -XPOST http://localhost:9200/index/fulltext/4 -d'
{content:"中国驻洛杉矶领事馆遭亚裔男子枪击 嫌犯已自首"}
'
</pre>
4.query with highlighting
<pre>
curl -XPOST http://localhost:9200/index/fulltext/_search -d'
{
"query" : { "term" : { "content" : "中国" }},
"highlight" : {
"pre_tags" : ["<tag1>", "<tag2>"],
"post_tags" : ["</tag1>", "</tag2>"],
"fields" : {
"content" : {}
}
}
}
'
</pre>
here is the query result
<pre>
{
"took": 14,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"failed": 0
},
"hits": {
"total": 2,
"max_score": 2,
"hits": [
{
"_index": "index",
"_type": "fulltext",
"_id": "4",
"_score": 2,
"_source": {
"content": "中国驻洛杉矶领事馆遭亚裔男子枪击 嫌犯已自首"
},
"highlight": {
"content": [
"<tag1>中国</tag1>驻洛杉矶领事馆遭亚裔男子枪击 嫌犯已自首 "
]
}
},
{
"_index": "index",
"_type": "fulltext",
"_id": "3",
"_score": 2,
"_source": {
"content": "中韩渔警冲突调查：韩警平均每天扣1艘中国渔船"
},
"highlight": {
"content": [
"均每天扣1艘<tag1>中国</tag1>渔船 "
]
}
}
]
}
}
</pre>
have fun.