大家好，又见面了，我是你们的朋友全栈君。
ES的基本指令：
1. 查看es的集群状态：
curl ‘IP:9200/_cat/health?v’
注释：？v表示格式化输出
2. 查看节点列表
curl ‘IP:9200/_cat/nodes?v’
3.查询所有索引及数据大小
curl ‘IP:9200/_cat/indices?v’
4.创建索引（名称为studentIndex）并指定分片数和备份数
curl -XPUT http://localhost:9200/studentIndex -d’
{
“settings” : {
“index” : {
“number_of_shards” : 3,
“number_of_replicas” : 2
}
}
}’
5.创建索引studentIndex，并添加类型student，并指定分词是studentname
curl -XPUT ‘http://localhost:9200/studentIndex’ -d ‘
{
“mappings”: {
“student”: {
“properties”: {
“studentname”: {
“type”: “string”
}
}
}
}
}’
ES和mysql的对应关系
MySql ElasticSearch
database — index
table — type
row — document
cloumn — field
schema — mapping
index — Everything is indexed
slect * from… — get http://…
update talbe set… — put http://…
6.查询索引是studentIndex，type是student，studentname字段的值是“李”的信息，默认返回第一页，10条数据
http://localhost:9200/studentIndex/student/_search?q=studentname:李
{
“took”: 32,
“timed_out”: false,
“_shards”: {
“total”: 5,
“successful”: 5,
“failed”: 0
},
“hits”: {
“total”: 645161,
“max_score”: 13.882782,
“hits”: [{
“_index”: “studentIndex”,
“_type”: “student”,
“_id”: “AWNIsqEX4aqkPyNgQr06”,
“_score”: 13.882782,
“_source”: {
“studentname”: “李李四”
}
},
{
“_index”: “studentIndex”,
“_type”: “student”,
“_id”: “AWNIsqEX4aqkPyNgQr06”,
“_score”: 13.23425,
“_source”: {
“studentname”: “李五”
}
}
]
}
}
7.使用post查询elastic search
curl -X POST \
http://1ip:9200/studentIndex/student/_search
-d ‘{
“query”: {
“match”: {
“studentname”: “李”
}
},
“from”: 100, // 第几页开始
“size”: 10 // 每页的大小
}’
返回结果同上：
注释：
在url中的q=* 相等于body中的
{
“query”: { “match_all”: {} }
}
8.查询数据总数：http://localhost:9200/studentIndex/student/_count
9.
a.插入数据：
curl -X POST ‘localhost:9200/studentIndex/student?pretty’ -d’ {“studentname”: “Jane Doe” }’
b.指定数据的Id是id1
curl -X POST ‘localhost:9200/studentIndex/student/id1?pretty’ -d’ {“studentname”: “John Doe” }’
10 删除数据
a.删除studentIndex中ID为2的数据
curl -X DELETE ‘localhost:9200/studentIndex/student/2?pretty’
b.根据条件删除数据
curl -X POST ‘localhost:9200/studentIndex/student/_delete_by_query?pretty’ -d ‘{
“query”: {
“match”: {
“studentname”: “John”
}
}
}’
11.
修改id=1的name属性，并直接增加属性和属性值
curl -X POST ‘localhost:9200/studentIndex/student/1/_update?pretty’ -d ‘ {
“doc”: {
“studentname”: “xyd”
}
}’
发布者：全栈程序员-站长，转载请注明出处：https://javaforall.net/149530.html原文链接：https://javaforall.net
