quickstart.md

快速开始

---

健康状态命令

Linux:
curl 'localhost:9200/_cat/health?v'

Powershell on windows:
Invoke-RestMethod -Uri http://localhost:9200/

查看节点

curl 'localhost:9200/_cat/nodes?v'

列出所有索引

curl 'localhost:9200/_cat/indices?v'

创建索引

curl -XPUT 'localhost:9200/customer?pretty'

创建类型和文档

curl -H "Content-Type: application/json" -XPUT 'localhost:9200/customer/external/1?pretty' -d '
{
  "name": "John Doe"
}'

查看文档

curl -XGET 'localhost:9200/customer/external/1?pretty'

删除索引

curl -XDELETE 'localhost:9200/customer?pretty'

修改更新索引

curl -H "Content-Type: application/json"  -XPUT 'localhost:9200/customer/external/1?pretty' -d '
{
  "name": "John Doe"
}'

删除文档

curl -XDELETE 'localhost:9200/customer/external/2?pretty'

批量操作

创建

curl  -H "Content-Type: application/json" -XPOST 'localhost:9200/customer/external/_bulk?pretty' -d '
{"index":{"_id":"1"}}
{"name": "John Doe" }
{"index":{"_id":"2"}}
{"name": "Jane Doe" }
'```

更新和删除

curl -H "Content-Type: application/json" -XPOST 'localhost:9200/customer/external/_bulk?pretty' -d ' {"update":{"_id":"1"}} {"doc": { "name": "John Doe becomes Jane Doe" } } {"delete":{"_id":"2"}} '```

从文件导入数据

curl  -H "Content-Type: application/json" -XPOST 'localhost:9200/bank/account/_bulk?pretty' --data-binary "@accounts.json"

搜索

curl 'localhost:9200/bank/_search?q=*&pretty'

took – 执行的搜索耗时，单位毫秒
timed_out – 搜索是否超时
_shards – 搜索的碎片数已经成功和失败的数量
hits – 搜索的结果
hits.total – 匹配数
hits.hits – 结果数组，默认显示前10个
_score and max_score - ignore these fields for now

分页

curl  -H "Content-Type: application/json" -XPOST 'localhost:9200/bank/_search?pretty' -d '
{
  "query": { "match_all": {} },
  "from": 10,
  "size": 10
}'

排序

curl  -H "Content-Type: application/json" -XPOST 'localhost:9200/bank/_search?pretty' -d '
{
  "query": { "match_all": {} },
  "sort": { "balance": { "order": "desc" } }
}'

只返回结果里指定的字段内容

curl  -H "Content-Type: application/json" -XPOST 'localhost:9200/bank/_search?pretty' -d '
{
  "query": { "match_all": {} },
  "_source": ["account_number", "balance"]
}'

匹配 mill 或 lane

curl  -H "Content-Type: application/json" -XPOST 'localhost:9200/bank/_search?pretty' -d '
{
  "query": { "match": { "address": "mill lane" } }
}'

匹配 mill lane

curl  -H "Content-Type: application/json" -XPOST 'localhost:9200/bank/_search?pretty' -d '
{
  "query": { "match_phrase": { "address": "mill lane" } }
}'```

匹配 mill 和 lane

curl -H "Content-Type: application/json" -XPOST 'localhost:9200/bank/_search?pretty' -d ' { "query": { "bool": { "must": [ { "match": { "address": "mill" } }, { "match": { "address": "lane" } } ] } } }'```

匹配 mill 或 lane

curl  -H "Content-Type: application/json" -XPOST 'localhost:9200/bank/_search?pretty' -d '
{
  "query": {
    "bool": {
      "should": [
        { "match": { "address": "mill" } },
        { "match": { "address": "lane" } }
      ]
    }
  }
}'

不能匹配 mill 和 lane

curl  -H "Content-Type: application/json" -XPOST 'localhost:9200/bank/_search?pretty' -d '
{
  "query": {
    "bool": {
      "must_not": [
        { "match": { "address": "mill" } },
        { "match": { "address": "lane" } }
      ]
    }
  }
}'

bool可以同时有多个条件

curl  -H "Content-Type: application/json" -XPOST 'localhost:9200/bank/_search?pretty' -d '
{
  "query": {
    "bool": {
      "must": [
        { "match": { "age": "40" } }
      ],
      "must_not": [
        { "match": { "state": "ID" } }
      ]
    }
  }
}'

bool下可以通过filter来对指定字段在指定范围内进行过滤

curl  -H "Content-Type: application/json" -XPOST 'localhost:9200/bank/_search?pretty' -d '
{
  "query": {
    "bool": {
      "must": { "match_all": {} },
      "filter": {
        "range": {
          "balance": {
            "gte": 20000,
            "lte": 30000
          }
        }
      }
    }
  }
}'

聚合

curl  -H "Content-Type: application/json" -XPOST 'localhost:9200/bank/_search?pretty' -d '
{
  "size": 0,
  "aggs": {
    "group_by_state": {
      "terms": {
        "field": "state"
      }
    }
  }
}'

相当于下面的SQL语句

SELECT state, COUNT(*) FROM bank GROUP BY state ORDER BY COUNT(*) DESC

上面的size=0是让结果不要返回 hits 结果