elasticsearch中文分词器的安装和体验

因为本人使用的elasticsearch的版本为5.2.1,相对应的中文分词器的下载地址为https://github.com/medcl/elasticsearch-analysis-ik/tree/v5.2.1.(请根据自己使用版本的不同进行下载)

安装其实挺简单,编译后解压缩到elasticsearch的安装目录,以下是我的安装目录.

unzip -d /usr/local/elasticsearch/plugins/ik/ elasticsearch-analysis-ik-5.2.1.zip

然后重启elasticsearch.

如果使用docker安装elasticsearch 6.2.4的步骤如下

docker pull docker.elastic.co/elasticsearch/elasticsearch:6.2.4

docker run -d --name myes -p 9200:9200 -p 9300:9300 -e "discovery.type=single-node" -v /etc/localtime:/etc/localtime:ro docker.elastic.co/elasticsearch/elasticsearch:6.2.4

安装中文分词器

docker cp elasticsearch-analysis-ik-6.2.4.zip myes:/usr/share/elasticsearch 将分词器的压缩文件放入容器中

docker exec -it myes bash进入容器

mkdir ./plugins/analysis-ik 在plugins目录下新建analysis-ik目录，此处与5.2.1不同

unzip -d ./ elasticsearch-analysis-ik-6.2.4.zip

cp -r ./elasticsearch/* ./plugins/analysis-ik/ 将解压后的./elasticsearch目录下的所有文件拷入./plugins/analysis-ik目录下

rm -rf ./elasticsearch

rm elasticsearch-analysis-ik-6.2.4.zip

exit

docker restart myes 重启elasticsearch服务

我们还是插入四条数据,检索全部如下

http://192.168.5.182:9200/ecommerce/toothpaste/_search

{ "took": 123, "timed_out": false, "_shards": { "total": 5, "successful": 5, "failed": 0 }, "hits": { "total": 4, "max_score": 1, "hits": [ { "_index": "ecommerce", "_type": "toothpaste", "_id": "2", "_score": 1, "_source": { "name": "佳洁士牙膏", "desc": "有效防蛀", "price": 25, "producer": "佳洁士生产商", "tags": [ "防蛀" ] } }, { "_index": "ecommerce", "_type": "toothpaste", "_id": "4", "_score": 1, "_source": { "name": "特别牙膏", "desc": "特别美白", "price": 50, "producer": "特别牙膏生产商", "tags": [ "美白", "防蛀" ] } }, { "_index": "ecommerce", "_type": "toothpaste", "_id": "1", "_score": 1, "_source": { "name": "高露洁牙膏", "desc": "高效美白", "price": 30, "producer": "高露洁生产商", "tags": [ "美白", "防蛀" ] } }, { "_index": "ecommerce", "_type": "toothpaste", "_id": "3", "_score": 1, "_source": { "name": "中华牙膏", "desc": "草本植物", "price": 40, "producer": "中华生产商", "tags": [ "清新" ] } } ] } }

全文检索

[root@host2 bin]# curl -XGET 'http://192.168.5.182:9200/ecommerce/toothpaste/_search' -d' > { > "query":{ > "match":{ > "producer":"牙膏生产商" > } > } > }' {"took":76,"timed_out":false,"_shards":{"total":5,"successful":5,"failed":0},"hits":{"total":4,"max_score":3.6265414,"hits":[{"_index":"ecommerce","_type":"toothpaste","_id":"4","_score":3.6265414,"_source":{ "name":"特别牙膏", "desc":"特别美白", "price":50, "producer":"特别牙膏生产商", "tags":["美白","防蛀"] }},{"_index":"ecommerce","_type":"toothpaste","_id":"3","_score":1.7306128,"_source":{ "name":"中华牙膏", "desc":"草本植物", "price":40, "producer":"中华生产商", "tags":["清新"] }},{"_index":"ecommerce","_type":"toothpaste","_id":"2","_score":1.6805282,"_source":{ "name":"佳洁士牙膏", "desc":"有效防蛀", "price":25, "producer":"佳洁士生产商", "tags":["防蛀"] }},{"_index":"ecommerce","_type":"toothpaste","_id":"1","_score":1.5775073,"_source":{ "name":"高露洁牙膏", "desc":"高效美白", "price":30, "producer":"高露洁生产商", "tags":["美白","防蛀"] }}]}}

根据以上结果可以看出,中文分词检索成功,所有有生产商的都会被检索出来,而由"牙膏生产商"检索出的特别牙膏生产商排第一,为最为匹配的.