elasticsearch 同义词配置搜索

同义词的配置如下:

杯子,保温杯

PUT tongyiciv2
{
"settings": {
"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": {
"id": {
"type": "long"

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

GET tongyiciv2/_search

POST tongyiciv2/_doc/1
{
"id":1,
"goodsName":"江苏潮流杯子加个实惠"
}
POST tongyiciv2/_doc/2
{
"id":2,
"goodsName":"乌鲁木齐潮流杯子样式绝美"
}
POST tongyiciv2/_doc/3
{
"id":3,
"goodsName":"Momscook 潮流 保温杯"
}

POST tongyiciv2/_doc/5
{
"id":4,
"goodsName":"上海潮流保温杯好用"
}

GET tongyiciv2/_analyze
{
"text": "保温杯",
"analyzer": "ik_sync_smart"
}

GET tongyiciv2/_search
{
"query": {
"match": {
"goodsName": "杯子"
}
}
}
GET tongyiciv2/_search
{
"query": {
"match": {
"goodsName": "保温杯"
}
}
}

============用"保温杯"分词后的结果===============

GET tongyiciv2/_analyze { "text": "保温杯", "analyzer": "ik_sync_smart" }

{

"tokens" : [
{
"token" : "保温杯",
"start_offset" : 0,
"end_offset" : 3,
"type" : "CN_WORD",
"position" : 0
},
{
"token" : "杯子",
"start_offset" : 0,
"end_offset" : 3,
"type" : "SYNONYM",
"position" : 0
}
]
}

============用"杯子"分词后的结果===============

GET tongyiciv2/_analyze
{
"text": "杯子",
"analyzer": "ik_sync_smart"
}

{
"tokens" : [
{
"token" : "杯子",
"start_offset" : 0,
"end_offset" : 2,
"type" : "CN_WORD",
"position" : 0
},
{
"token" : "保温杯",
"start_offset" : 0,
"end_offset" : 2,
"type" : "SYNONYM",
"position" : 0
}
]
}

===========用"杯子"查询=================

GET tongyiciv2/_search
{
  "query": {
    "match": {
      "goodsName": "杯子"
    }
  }
}

===========用"保温杯"查询=================
GET tongyiciv2/_search
{
  "query": {
    "match": {
      "goodsName": "保温杯"
    }
  }
}
查询的结果是一样的:

{
"took" : 7,
"timed_out" : false,
"_shards" : {
"total" : 5,
"successful" : 5,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 4,
"relation" : "eq"
},
"max_score" : 0.41501677,
"hits" : [
{
"_index" : "tongyiciv2",
"_type" : "_doc",
"_id" : "PFBLa3YBxN1KAZdSYRfw",
"_score" : 0.41501677,
"_source" : {
"id" : 1,
"goodsName" : "江苏潮流杯子加个实惠"
}
},
{
"_index" : "tongyiciv2",
"_type" : "_doc",
"_id" : "R8Iba3YBNdF4r2WqF8xZ",
"_score" : 0.2876821,
"_source" : {
"id" : 4,
"goodsName" : "上海潮流保温杯好用"
}
},
{
"_index" : "tongyiciv2",
"_type" : "_doc",
"_id" : "PVBLa3YBxN1KAZdSwRdi",
"_score" : 0.24309544,
"_source" : {
"id" : 2,
"goodsName" : "乌鲁木齐潮流杯子样式绝美"
}
},
{
"_index" : "tongyiciv2",
"_type" : "_doc",
"_id" : "RsIba3YBNdF4r2WqEcyq",
"_score" : 0.21110919,
"_source" : {
"id" : 3,
"goodsName" : "Momscook 潮流 保温杯"
}
}
]
}
}

注意:

我是在本地测试,在配置或者删除同义词时要重启es 服务器 bin/.elasticsearch

同义词配置有两种:

1,a=>b: 通俗的来讲,就是尽管用户输入的是a,但是es在查询的是会转成b去搜索,比如 保温杯=>杯子,用户输入的是"保温杯",但是es会用"杯子"去做搜索

2,a,b:通俗的来讲,就是不管用户输入的是a还是b,es在查询的是用a,或者b搜索.比如 保温杯,杯子,用户输入的是"保温杯",es会用"杯子"去做搜索,也会用"保温杯"搜索