DELETE /school
PUT /school
{
"settings": {
"index": {
"number_of_shards": 5,
"number_of_replicas": 1
}
}
}
创建文档
注意时间格式是ISO_8601日期格式标准
PUT /school/student/1
{
"name": "zhangsan",
"age": 25,
"course": "elasticsearch",
"study_date": "2017-06-15T20:30:50+0800"
}
自动生成ID
POST /school/student/
{
"name": "lisi",
"age": 26,
"course": "springboot",
"study_date": "2017-06-17T20:30:50+0800"
}
创建一个完全新的文档,如果文档存在，则报错.PUT或POST都可以
PUT /school/student/1?op_type=create
{
"name": "zhangsan",
"age": 25,
"course": "elasticsearch",
"study_date": "2017-06-15T20:30:50+0800"
}
或者写成
PUT /school/student/1/_create
{
"name": "zhangsan",
"age": 25,
"course": "elasticsearch",
"study_date": "2017-06-15T20:30:50+0800"
}
获取文档文档信息
GET /school/student/1
GET /school/student/AVxEcYVoY8sx3YdxzF0u
检查文档是否存在，有返回200，没有返回404
HEAD /school/student/1
获取文档，指定字段，逗号分隔
GET /school/student/1?_source=name,age
仅获取source字段内容
GET /school/student/1/_source
更新文档，注意version的变化
在 Elasticsearch 中文档是 不可改变 的，不能修改它们。 相反，如果想要更新现有的文档，需要 重建索引 或者进行替换.
在内部，Elasticsearch 已将旧文档标记为已删除，并增加一个全新的文档。
尽管你不能再对旧版本的文档进行访问，但它并不会立即消失。
当继续索引更多的数据，Elasticsearch 会在后台清理这些已删除文档。
PUT /school/student/1
{
"name": "zhangsan",
"age": 26,
"course": "elasticsearch",
"study_date": "2017-06-15T20:30:50+0800"
}
GET /school/student/1
通过 _update API的方式更新部分字段
POST /school/student/1/_update
{
"doc": {
"age": 26,
"sex": "male"
}
}
GET /school/student/1
通过脚本更新,脚本语言可以是painless（默认），Groovy，类似javascript
POST /school/student/1/_update
{
"script" : {
"lang": "painless",
"inline":"ctx._source.age+=1"
}
}
通过脚本添加或修改某个字段
内置支持的语言：painless、groovy
javascript插件安装
sudo bin/elasticsearch-plugin install lang-javascript
python插件安装
sudo bin/elasticsearch-plugin install lang-python
POST /school/student/1/_update
{
"script" : {
"lang": "painless",
"inline":"ctx._source.sex='male'"
}
}
通过脚本移除某个字段
POST /school/student/1/_update
{
"script" : "ctx._source.remove('sex')"
}
传参数
POST /school/student/1/_update
{
"script": {
"lang": "painless",
"inline": "ctx._source.name = params.name ",
"params": {
"name": "zhangsan"
}
}
}
并发控制
通过指定版本号进行更新，只更新指定版本的文档
PUT /school/student/1?version=1
{
"name": "zhangsan",
"age": 26,
"course": "elasticsearch",
"study_date": "2017-06-15T20:30:50+0800"
}
采用外部版本号，可以更新比当前版本号大的文档
外部版本号，必须是大于0的long型整数
external or external_gte
PUT /school/student/1?version=10&version_type=external
{
"name": "zhangsan",
"age": 26,
"course": "elasticsearch",
"study_date": "2017-06-15T20:30:50+0800"
}
新版本增加update by query,默认是1000条
POST /school/_update_by_query?scroll_size=1000&conflicts=proceed
{
"script": {
"inline": "ctx._source.name6='abc'",
"lang": "painless"
},
"query": {
"term": {
"name": "zhangsan"
}
}
}
删除文档
注意delete也有version字段，即使文档不存在，version也会增加，这样的好处就是跨多个分布式节点时，保证结果的正确性
DELETE /school/student/1
不可以删除一个type，下面的命令是错误的
DELETE /school/student
可以直接删除一个索引
DELETE /school
GET /school/student/1
新版本重新加入了delete by query
POST school/student/_delete_by_query?conflicts=proceed
{
"query": {
"match_all": {}
}
}
空搜索
GET /_search
获取所有文档，默认返回前10条。
GET /school/student/_search
分页查询
第1页
GET /school/student/_search?size=2
第2页：
GET /school/student/_search?size=2&from=2
轻量搜索
GET /school/student/_search?q=-name:zhangsan
GET /school/student/_search?q=elasticsearch
GET /school/student/_search?q=%2Bstudy_date:<2018-06-17+%2Bname:(zhangsan lisi)
批量获取scoll scan
GET school/_search?scroll=1m
{
"query": {
"match_all": {}
},
"sort": [
"_doc"
],
"size": 2
}
GET /_search/scroll
{
"scroll" : "1m",
"scroll_id" : "xxxxxxxxxx"
}
搜索某一个字段存在值
GET school/_search
{
"query": {
"exists" : { "field" : "name" }
}
}
搜索某一个字段不存在值
GET school/_search
{
"query": {
"bool": {
"must_not": {
"exists": {
"field": "name"
}
}
}
}
}
