elasticsearch 常用命令（一）

索引 搜索 mapping 分词器

1.创建索引

http://192.168.65.131:9200/smartom_index?pretty

2.查看索引:

http://192.168.65.131:9200/_cat/indices?v

3.插入数据【这样也就是说创建了一个文档为users】

http://192.168.65.131:9200/smartom_index/users/101
{
    "name":"smartom",
    "age":19
}

---

4.精确搜索

http://192.168.65.131:9200/smartom_index/_search?q=name:smartom

5.全词搜索

http://192.168.65.131:9200/smartom_index/_search

---

全文索引

6.全词搜索 term

term是代表完全匹配，即不进行分词器分析，文档中必须包含整个搜索的词汇

GET smartom_index/users/_search
{
  "query":{
    "term":{
      "name":{
        "value":"smartom"
      }
    }
  }
}

7.全词搜索 match 全文搜索查询

分词查询

GET smartom_index/users/_search
{
  "query": {
    "match": {
      "name": "我是smartom你是谁"
    }
  }
}

---

分词器analyze

8.创建一个分词器

POST _analyze
{
  "analyzer":"standard",
  "text":"我是smartom你是谁"
}

standard

simple

---

过滤器 标记器

9. 一个标记器【filter？】

POST _analyze
{
  "tokenizer":"lowercase",
  "text":"SMARTOM"
}

也可以 在tokenizer里面写 standard

10.一个过滤器：

POST _analyze
{
  "tokenizer": "standard",
  "filter": ["lowercase"],
  "text": "我是smartom你是谁"
}

11.字符过滤器：[过滤html代码]

POST _analyze
{
  "tokenizer": "standard",
  "char_filter": ["html_strip"],
  "text": "woshi<br><b>asdf</b>是"
}

12.创建一个过滤器：settings analysis analyzer

PUT smartom
{
  "settings": {
    "analysis": {
      "analyzer": {
        "smartom-analyer":{
          "type":"custom",
          "tokenizer":"standard",
           "char_filter":["html_strip"],
           "filter":["lowercase"]
        }
      }
    }
  }
}

13.创建仓库：

前提指定repo路径 elasticsearch.yml path.repo path.repo:["/home/smartom/Desktop/esbak"]

PUT _snapshot/mybackup
{
  "type": "fs",
  "settings": {
    "location": "/home/smartom/Desktop/esbak"
  }
}

14.备份索引：

bak1 是备份名称 smartom_index 备份的索引名称

PUT _snapshot/mybackup/bak1?wait_for_completion=true
{
  "indices": "smartom_index"
}

15.删除索引

DELETE smartom

16.关闭索引

POST smartom_index/_close

17.恢复索引

POST _snapshot/mybackup/bak1/_restore?wait_for_completion=true
{
  "indices": "smartom_index"
}

18.查看当前插件

GET _cat/plugins

19.查看mapping当前文档 查看文档字段类型?

GET smartom_index/_mappings

20.创建mapping

[刚创建的时候]

POST /smartom_index/fulltext/_mapping
{
    "properties": {
        "content": {
            "type": "text",
            "analyzer": "ik_max_word",
            "search_analyzer": "ik_max_word"
        }
    }
}

需要导入和导出数据

删除数据之后 title 用ik分词器进行索引

PUT smartom_index
{
    "mappings": {
      "news":{
        "properties": {
            "title": {
              "type":"text",
              "analyzer": "ik_max_word"
            }
        }
      }
    }
}

21.修改文档中的类型？

PUT smartom_index/_mapping/users
{
  "properties": {
    "news": { 
      "type":     "text",
      "fields": {
        "keyword": {
          "type": "keyword",
          "ignore_above": 256
        }
      }
    }
  }

22.搜索建议