- 内部端口：9300
- http访问端口：9200
- 索引 ——> 数据库
- 类型 ——> 表 （新版本已删除）
- 文档 ——> 行
- 字段 ——> 列
-
创建索引
PUT，http://localhost:9200/索引名
响应：
{ "acknowledged": true, "shards_acknowledged": true, "index": "index001" } -
查询索引
GET，http://localhost:9200/索引名
响应：
{ "index001": { "aliases": {}, "mappings": {}, "settings": { "index": { "creation_date": "1635474837213", "number_of_shards": "5", "number_of_replicas": "1", "uuid": "PEkqdQUnR1GOjqzC3a67QA", "version": { "created": "6040399" }, "provided_name": "index001" } } } } -
删除索引
GET，http://localhost:9200/索引名
响应：
{ "acknowledged": true }
-
创建文档 (如果没有id将生成随机id)
POST，http://localhost:9200/索引名/_doc/[id]
请求：
{ "name": :"zhangsan" }响应：
{ "_index": "index001", "_type": "_doc", "_id": "GvzvyXwBC84NtfuwHmoc", "_version": 1, "result": "created", "_shards": { "total": 2, "successful": 1, "failed": 0 }, "_seq_no": 0, "_primary_term": 1 } -
查询文档
GET，http://localhost:9200/索引名/_doc/文档id
响应：
{ "_index": "index001", "_type": "_doc", "_id": "GvzvyXwBC84NtfuwHmoc", "_version": 1, "found": true, "_source": { "name": "zhangsan" } } -
查询索引下全部文档
GET，http://localhost:9200/索引名/_search
响应：
{ "took": 157, // 耗费时间毫秒 "timed_out": false, "_shards": { "total": 5, "successful": 5, "skipped": 0, "failed": 0 }, "hits": { "total": 1, "max_score": 1.0, "hits": [ { "_index": "index001", "_type": "_doc", "_id": "GvzvyXwBC84NtfuwHmoc", "_score": 1.0, "_source": { "name": "zhangsan" } } ] } } -
更新文档
PUT，http://localhost:9200/索引名/_doc/文档id
请求：
{ "name": :"lisi" }响应：
{ "_index": "index001", "_type": "_doc", "_id": "GvzvyXwBC84NtfuwHmoc", "_version": 2, "result": "updated", "_shards": { "total": 2, "successful": 1, "failed": 0 }, "_seq_no": 1, "_primary_term": 1 } -
更新局部文档
POST，http://localhost:9200/索引名/_update/文档id
请求：(需修改的内容)
{ "name": :"lisi" }响应：
{ "_index": "index001", "_type": "_doc", "_id": "GvzvyXwBC84NtfuwHmoc", "_version": 3, "result": "updated", "_shards": { "total": 2, "successful": 1, "failed": 0 }, "_seq_no": 2, "_primary_term": 1 } -
条件查询
GET，http://localhost:9200/索引名/_search?q=name:lisi_1
或
GET，http://localhost:9200/索引名/_search
请求：
{ "query":{ "match":{ // 完全匹配 "name":"lisi_1" }, "match_all":{ // 全查询 } }, "from":1, // 页码 "size":1, // 每页条数 "_source":[ // 限制显示的字段，相当于: select name "name" ], "sort":{ // 排序 "name":{ "order":"asc" } } }响应：
{ "took": 1, "timed_out": false, "_shards": { "total": 5, "successful": 5, "skipped": 0, "failed": 0 }, "hits": { "total": 0, "max_score": null, "hits": [] } } -
多条件查询
GET，http://localhost:9200/索引名/_search
请求：
{ "query":{ "bool":{ "must":[ // must：模糊匹配, must_phrase：完全匹配 { "match":{ "name":"lisi_1" } }, { "match":{ "age":23 } } ] } }, "from":1, "size":1, "_source":[ "name" ], "sort":{ "name":{ "order":"asc" } } }响应：略
-
聚合查询
GET，http://localhost:9200/索引名/_search
请求：
{ "aggs":{ "aaa":{ // 名称 "terms":{ // 分组 "field": "name" // 分组字段 } } }响应：略
-
创建索引
PUT，http://localhost:9200/索引名/_mapping
请求：
{ "properties":{ "name":{ "type": "text", // 将进行分词 "index": true, // 是否为该字段建立索引 }, "age":{ "type": "keyword", // 作为关键字，不会分词 "index": true, }, "name":{ "type": "keyword", "index": false, } } }响应：
{ "properties":{ "name":{ "type": "text", "index": true, }, "age":{ "type": "keyword", "index": true, }, "name":{ "type": "keyword", "index": false, } } }
引入依赖
org.elasticsearch elasticsearch 7.8.0 org.elasticsearch.client elasticsearch-rest-high-level-client 7.8.0
