es简介

Elastic官网

https://www.elastic.co/cn/

主要功能:

分布式搜索

数据分析

分组和聚合

es下载地址

https://www.elastic.co/cn/downloads/

linux安装es

• 将下载的安装包上传导linux服务器,我的版本是elasticsearch-7.2.0-linux-x86_64.tar.gz
• 创建usr/local/soft/es目录,将es解压到这个目录中
• 修改es的yum文件

node.name: node-1
// 这个很重要
http.host: 0.0.0.0
http.port: 9200

• 修改es的jvm.options

-Xms256M
-Xmx256M

• 创建新的用户来启动es
• useradd esuser
• 赋予权限

chown -R esuser:esuser /usr/local/software/elasticsearch-7.2.0

• 切换到esuser用户

su esuser

• 通过es用户后台启动es

sh elasticsearch -d

• 验证是否启动成功

curl -X GET "http://localhost:9200"

添加ik到es中

• 下载ik的版本必须和es版本对应
• 将ik放到es的plugin目录下进行解压

es重启后会加载ik

es中新增索引post

curl -X PUT "localhost:9200/post" 

将分词器修改成ik

• 关闭索引

POST post/_close

• 配置ik

PUT post/_settings
{
  "number_of_replicas": 0,
  "index":{
    "analysis.analyzer.default.type":"ik_max_word",
    "analysis.search_analyzer.default.type":"ik_smart"
  }
}

• 开启post索引

POST post/_open

创建es的mapping,根据自己的需求创建

curl --location --request PUT '787k.fun:9200/post/_mapping' \
--header 'Content-Type: application/json' \
--data-raw '{
    "properties": {
        "id": {
            "type": "integer"
        },
        "title": {
            "type": "text"
        },
        "content": {
            "type": "text"
        },
        "blogImg": {
            "type": "keyword"
        },
        "html_content": {
            "type": "keyword"
        },
        "authorId": {
            "type": "integer"
        },
        "authorName": {
            "type": "keyword"
        },
        "tag": {
            "type": "integer"
        },
        "type": {
            "type": "integer"
        },
        "status": {
            "type": "integer"
        },
        "commentCount": {
            "type": "integer"
        },
        "score": {
            "type": "double"
        },
        "created": {
            "type": "date"
        },
        "updated": {
            "type": "date"
        }
    }
}'

springboot集成es

• pom文件加入依赖

    
      org.elasticsearch.client
      elasticsearch-rest-high-level-client
      7.2.0
    
    
      org.elasticsearch
      elasticsearch
      7.2.0
    
    

• yum文件添加文件

elasticsearch.host=localhost
elasticsearch.port=9200

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