Elastic Search 搜索的简单使用
搜索的简单使用
准备工作
- 删掉nba索引
- DELETE localhost:9200/nba
- 新建一个索引，并且指定mapping新增document
- PUT localhost:9200/nba
-
{ "mappings":{ "properties":{ "name":{ "type":"text" }, "team_name":{ "type":"text" }, "position":{ "type":"text" }, "play_year":{ "type":"long" }, "jerse_no":{ "type":"keyword" } } } }
- PUT localhost:9200/nba/_doc/1
-
{ "name":"哈登", "team_name":"火箭", "position":"得分后卫", "play_year":10, "jerse_no":"13" } - PUT localhost:9200/nba/_doc/2
-
{ "name":"库里", "team_name":"勇士", "position":"控球后卫", "play_year":10, "jerse_no":"30" } - PUT localhost:9200/nba/_doc/3
-
{ "name":"詹姆斯", "team_name":"湖人", "position":"小前锋", "play_year":15, "jerse_no":"23" }
term(词条)查询和full text(全文)查询
- 词条查询：词条查询不会分析查询条件，只有当词条和查询字符串完全匹配时，才匹配搜索。
- 全文查询：ElasticSearch引擎会先分析查询字符串，将其拆分成多个分词，只要已分析的字段中包含词条的任意一个，或全部包含，就匹配查询条件，返回该文档；如果不包含任意一个分词，表示没有任何文档匹配查询条件
单条term查询
POST localhost:9200/nba/_search
{
"query":{
"term":{
"jerse_no":"23"
}
}
}
多条term查询
POST localhost:9200/nba/_search
参数：
{
"query":{
"terms":{
"jerse_no":[
"23",
"13"
]
}
}
}
返回值：
{
"took": 18,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 2,
"relation": "eq"
},
"max_score": 1.0,
"hits": [
{
"_index": "nba",
"_type": "_doc",
"_id": "1",
"_score": 1.0,
"_source": {
"name": "哈登",
"team_name": "火箭",
"position": "得分后卫",
"play_year": 10,
"jerse_no": "13"
}
},
{
"_index": "nba",
"_type": "_doc",
"_id": "3",
"_score": 1.0,
"_source": {
"name": "詹姆斯",
"team_name": "湖人",
"position": "小前锋",
"play_year": 15,
"jerse_no": "23"
}
}
]
}
}
match_all
POST localhost:9200/nba/_search
参数：
{
"query":{
"match_all":{
}
},
"from":0,
"size":10
}
返回值：
{
"took": 4,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 3,
"relation": "eq"
},
"max_score": 1.0,
"hits": [
{
"_index": "nba",
"_type": "_doc",
"_id": "1",
"_score": 1.0,
"_source": {
"name": "哈登",
"team_name": "火箭",
"position": "得分后卫",
"play_year": 10,
"jerse_no": "13"
}
},
{
"_index": "nba",
"_type": "_doc",
"_id": "2",
"_score": 1.0,
"_source": {
"name": "库里",
"team_name": "勇士",
"position": "控球后卫",
"play_year": 10,
"jerse_no": "30"
}
},
{
"_index": "nba",
"_type": "_doc",
"_id": "3",
"_score": 1.0,
"_source": {
"name": "詹姆斯",
"team_name": "湖人",
"position": "小前锋",
"play_year": 15,
"jerse_no": "23"
}
}
]
}
}
match
POST localhost:9200/nba/_search
参数：
{
"query":{
"match":{
"position":"后卫"
}
}
}
返回值：
{
"took": 55,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 2,
"relation": "eq"
},
"max_score": 0.90630186,
"hits": [
{
"_index": "nba",
"_type": "_doc",
"_id": "1",
"_score": 0.90630186,
"_source": {
"name": "哈登",
"team_name": "火箭",
"position": "得分后卫",
"play_year": 10,
"jerse_no": "13"
}
},
{
"_index": "nba",
"_type": "_doc",
"_id": "2",
"_score": 0.90630186,
"_source": {
"name": "库里",
"team_name": "勇士",
"position": "控球后卫",
"play_year": 10,
"jerse_no": "30"
}
}
]
}
}
multi_match
POST localhost:9200/nba/_update/2
参数：
{
"doc":{
"name":"库里",
"team_name":"勇士",
"position":"控球后卫",
"play_year":10,
"jerse_no":"30",
"title":"the best shooter"
}
}
POST localhost:9200/nba/_search
参数：
{
"query":{
"multi_match":{
"query":"shooter",
"fields":[
"title",
"name"
]
}
}
}
参数：
{
"query":{
"multi_match":{
"query":"shooter",
"fields":[
"*title",
"name"
]
}
}
}
match_phrase
post localhost:9200/nba/_search
参数：
{
"query":{
"match_phrase":{
"position":"得分后卫"
}
}
}
返回值：
{
"took": 12,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 1,
"relation": "eq"
},
"max_score": 2.797622,
"hits": [
{
"_index": "nba",
"_type": "_doc",
"_id": "1",
"_score": 2.797622,
"_source": {
"name": "哈登",
"team_name": "⽕火箭",
"position": "得分后卫",
"play_year": 10,
"jerse_no": "13"
}
}
]
}
}
match_phrase_prefix
POST localhost:9200/nba/_update/3
参数：
{
"doc":{
"name":"詹姆斯",
"team_name":"湖人",
"position":"小前锋",
"play_year":15,
"jerse_no":"23",
"title":"the best small forward"
}
}
POST localhost:9200/nba/_search
参数：
{
"query":{
"match_phrase_prefix":{
"title":"the best s"
}
}
}
返回值：
{
"took": 4,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 2,
"relation": "eq"
},
"max_score": 1.8596163,
"hits": [
{
"_index": "nba",
"_type": "_doc",
"_id": "2",
"_score": 1.8596163,
"_source": {
"name": "库里",
"team_name": "勇士",
"position": "控球后卫",
"play_year": 10,
"jerse_no": "30",
"title": "the best shooter"
}
},
{
"_index": "nba",
"_type": "_doc",
"_id": "3",
"_score": 1.6542599,
"_source": {
"name": "詹姆斯",
"team_name": "湖人",
"position": "小前锋",
"play_year": 15,
"jerse_no": "23",
"title": "the best small forward"
}
}
]
}
}
