elasticsearch ik同义词

由于elasticsearch 更新实在太快，配置同义词的资料层次不齐，费尽千辛万苦终于找到了。本文通过一个同义词搜索的简单实例来说明ik同义词的配置。

环境介绍

这点很重要，本文是基于elasticsearch7.1.1,ik7.1.1。

配置同义词文件

上传文件的路径位于 es 安装路径的 config 下，新建 analysis 文件夹，并新建 synonym.txt 文件。

此处我是通过配置docker-compose 完成文件挂载，可以简单参考。

version: '3'
services:
  es:
    build: .
    image: es
    container_name: master
    environment:
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
    volumes:
      - ./elasticsearch/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml
      - ./elasticsearch/config/analysis/synonym.txt:/usr/share/elasticsearch/config/analysis/synonym.txt
      - esdata:/usr/share/elasticsearch/data
      - eslogs:/usr/share/elasticsearch/logs
    ports:
      - 9200:9200
      - 9300:9300

synonym.txt

西红柿,番茄

创建index

在kibana下输入

PUT /goods
{
	"settings": {
		"number_of_shards": 1,
		"number_of_replicas": 0,
		"analysis": {
			"filter": {
				"word_sync": {
					"type": "synonym",
					"synonyms_path": "analysis/synonym.txt"
				}
			},
			"analyzer": {
				"ik_sync_smart": {
					"filter": [
						"word_sync"
					],
					"type": "custom",
					"tokenizer": "ik_smart"
				}
			}
		}
	},
	"mappings": {

		"properties": {
			"goodsName": {
				"type": "text",
				"analyzer": "ik_sync_smart",
				"search_analyzer": "ik_sync_smart"
			},
			"goodsContent": {
				"type": "text",
				"analyzer": "ik_sync_smart",
				"search_analyzer": "ik_sync_smart"
			}
		}
	}
}

插入数据

POST /goods/_doc/1
{
	"goodsName": "西红柿",
	"goodsContent": "新疆的西红柿"
}

查询测试

POST /goods/_doc/_search
{
  "query": {
    "match": {
      "goodsContent": "番茄"
    }
  }
}

返回西红柿结果。

实际应用场景下仅需修改index 即可。