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第二章 SpringBoot整合ES7

article 2024/12/26 11:18:23

1 docker的ES7添加用户名和密码

修改/home/es/config/elasticsearch.yml文件

network.host: 0.0.0.0
network.publish_host: 192.168.101.157
http.port: 9200
transport.tcp.port: 9300
http.cors.enabled: true
http.cors.allow-origin: "*"
# 设置用户名和密码
http.cors.allow-headers: Authorization
xpack.security.enabled: true
xpack.security.transport.ssl.enabled: true

重启容器

docker restart es7.16.3

执行设置用户名和密码的命令

# 进入容器
docker exec -it es7.16.3 bash
# 进入到ES对应目录
cd  /usr/share/elasticsearch/bin
//设置用户名和密码的命令
elasticsearch-setup-passwords interactive 
# 输入ES的各个模块的密码

已知原密码修改现有密码

curl -XPOST -u elastic "127.0.0.1:9200/_security/user/elastic/_password" -H 'Content-Type: application/json' -d'{"password" : "elastic"}'

2 忘记ES密码，需要进行重置

修改配置文件config/elasticsearch.yml，注释掉支持x-pack的xpack.security.enabled: true配置，保存退出
重启ES容器
启动成功后，使用curl查看当前Elasticsearch的索引

curl -XGET "127.0.0.1:9200/_cat/indices" -H 'Content-Type: application/json'

控制台打印，多了一个.security-7的索引

curl -XGET "127.0.0.1:9200/_cat/indices" -H 'Content-Type: application/json'
> green open .security-7 J7VZVkwGT0um4GyH3nptnQ 1 0 6 0 20.5kb 20.5kb

删除.security-7的索引

curl -XDELETE 127.0.0.1:9200/.security-7

重置密码

3 修改kibana对应配置

修改/home/kibana/config/kibana.yml配置文件

server.name: kibana
server.host: "0"
server.shutdownTimeout: "5s"
elasticsearch.hosts: ["http://192.168.101.157:9200"]
monitoring.ui.container.elasticsearch.enabled: true
i18n.locale: "zh-CN"
elasticsearch.username: elastic
elasticsearch.password: elastic

重启kibana容器

4 SpringBoot整合ES

修改pom.xml添加springBoot的ES支持

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.demo</groupId>
    <artifactId>esspringboot_proc</artifactId>
    <version>1.0-SNAPSHOT</version>
    <!--统一版本-->
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <!-- spring boot -->
        <spring-boot.version>2.4.2</spring-boot.version>
        <!-- tools -->
        <lombok.version>1.18.24</lombok.version>
        <hutool.version>5.8.5</hutool.version>
    </properties>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.2</version>
        <relativePath/>
    </parent>
    <dependencies>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>${lombok.version}</version>
        </dependency>
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>${hutool.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-elasticsearch</artifactId>
        </dependency>
    </dependencies>
    <build>
        <finalName>${project.artifactId}</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>${spring-boot.version}</version>
            </plugin>
        </plugins>
    </build>
</project>

添加src/main/resources/application.yml

server:
  port: 8100
spring:
  application:
    name: esspringboot-proc
  elasticsearch:
    rest:
      uris: http://192.168.101.157:9200
      username: elastic
      password: elastic

创建对应索引的实体类
一个Spring Data Elasticsearch的POJO必须定义一个被@Id修饰的字段，它是和索引中的_id相对应的。当搜索完成时，Spring Data Elasticsearch会将该POJO的字段填充为搜索结果显示的数据，包括ID字段（填充为文档的_id值）

package com.demo.po;
import lombok.Data;
import org.springframework.data.annotation.Id;
import org.springframework.data.elasticsearch.annotations.Document;
@Data
@Document(indexName = "hotol")
public class Hotel {
    /*对应ES索引中的中_id*/
    @Id
    private String id;
    private String title;
    private String city;
    private String price;
}

定义操作接口
在EsRepository接口中，可以按照业务需求定义方法，Spring Data Elasticsearch会自动找到其类库中合适的实现类。

package com.demo.service;

import com.demo.po.Hotel;
import org.springframework.data.repository.CrudRepository;
import java.util.List;
public interface HotelService extends CrudRepository<Hotel,String> {
     //注意方法名称对应ES中的查询方法
    List<Hotel> findByTitleLike(String title);
}

自定义业务方法
在Service中就可以定义HotelService 类型的成员变量了，由Spring Boot完成注入，在findByTitle()方法中调用EsRepository的对应方法完成搜索。

package com.demo.service;
import com.demo.po.Hotel;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;

@Service
public class HotelServiceImpl {
    @Autowired
    private HotelService hotelService;
    public List<Hotel> findByTitle(String title){
        return hotelService.findByTitleLike(title);
    }
}

自定义控制器

package com.demo.controller;
import com.demo.po.Hotel;
import com.demo.service.HotelServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
@RestController
public class HotelController {
    @Autowired
    private HotelServiceImpl hotelService;
    @GetMapping("/findtitle")
    public List<Hotel> findTitle(){
        return hotelService.findByTitle("富豪");
    }
}

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