创建java工程访问elasticsearch
导入pom
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<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.5.6</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.fch</groupId>
<artifactId>myelasticsearch</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>myelasticsearch</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- mysql:MyBatis相关依赖 -->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.0.0</version>
</dependency>
<!-- mysql:mysql驱动 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<!-- mysql:阿里巴巴数据库连接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.12</version>
</dependency>
<!--Elasticsearch相关依赖-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
</dependency>
<!--支持自定义es方法-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<!--低于提示版本-->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>2.6</version>
</plugin>
</plugins>
</build>
</project>
配置yml
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server:
port: 8080
spring:
application:
#应用名称
name: service-sms
#数据库连接配置
datasource:
#配置当前使用的数据源的操作类型
type: com.alibaba.druid.pool.DruidDataSource
#配置MySQL的驱动程序类
driver-class-name: com.mysql.cj.jdbc.Driver
#数据库连接地址
url: jdbc:mysql://xxxxxx:3306/esdb?characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
#数据库连接用户名
username: root
#数据库连接密码
password: 1111
#进行数据库连接池的配置
dbcp2:
#初始化提供的连接数
initial-size: 5
#数据库连接池的最小维持连接数
min-idle: 5
#最大的连接数
max-total: 5
#等待连接获取的最大超时时间
max-wait-millis: 200
validation-query: SELECT 1
test-while-idle: true
test-on-borrow: false
test-on-return: false
data:
elasticsearch:
repositories:
enabled: true
elasticsearch:
rest:
uris: http://xxxxx:9200
mybatis:
mapper-locations:
- classpath:mapper/*.xml
RestClientConfig
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package com.fch.myelasticsearch.config;
import org.elasticsearch.client.RestHighLevelClient;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.elasticsearch.client.ClientConfiguration;
import org.springframework.data.elasticsearch.client.RestClients;
import org.springframework.data.elasticsearch.config.AbstractElasticsearchConfiguration;
@Configuration
public class RestClientConfig extends AbstractElasticsearchConfiguration {
@Override
@Bean
public RestHighLevelClient elasticsearchClient() {
final ClientConfiguration clientConfiguration = ClientConfiguration.builder()
.connectedTo("xxxxx:9200")
.build();
return RestClients.create(clientConfiguration).rest();
}
}
EsController
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package com.fch.myelasticsearch.controller;
import com.alibaba.druid.support.json.JSONUtils;
import com.fch.myelasticsearch.dao.ElastRepository;
import com.fch.myelasticsearch.dao.EsDao;
import com.fch.myelasticsearch.entity.EsProduct;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import java.util.List;
import java.util.Optional;
@Controller
public class EsController {
@Autowired
private EsDao esDao;
@Autowired
private ElastRepository elastRepository;
@RequestMapping("/test")
@ResponseBody
public String start(){
List<EsProduct> all = esDao.getAll();
System.out.println(all);
for(EsProduct esProduct:all){
System.out.println("esProduct:"+esProduct);
elastRepository.save(esProduct);
}
return "ok";
}
@RequestMapping("/test1")
@ResponseBody
public String start1(){
List<EsProduct> zhangsan = elastRepository.findByName("name0");
System.out.println(zhangsan);
return "ok1";
}
@RequestMapping("/test2")
@ResponseBody
public String start2(){
elastRepository.deleteById("1");
return "ok2";
}
}
EsProduct
点击查看代码
package com.fch.myelasticsearch.entity;
import org.springframework.data.annotation.Id;
import org.springframework.data.elasticsearch.annotations.Document;
import org.springframework.data.elasticsearch.annotations.Field;
import org.springframework.data.elasticsearch.annotations.FieldType;
import java.io.Serializable;
@Document(indexName = "myuser",shards = 1,replicas = 0)
public class EsProduct implements Serializable{
private static final long serialVersionUID = -1L;
@Id
private Integer id;
@Field(type = FieldType.Text)
private String name;
@Field(type = FieldType.Text)
private String sex;
@Field(type = FieldType.Text)
private String address;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
@Override
public String toString() {
return "EsProduct{" +
"id=" + id +
", name='" + name + '\'' +
", sex='" + sex + '\'' +
", address='" + address + '\'' +
'}';
}
}
ElastRepository，导入jpa实现像sql一样的查询
点击查看代码
package com.fch.myelasticsearch.dao;
import com.fch.myelasticsearch.entity.EsProduct;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
import java.util.List;
public interface ElastRepository extends ElasticsearchRepository<EsProduct,String> {
//1.根据姓名查询
List<EsProduct> findByName(String name);
//
// //2.根据年龄查询
// List<EsProduct> findByAge(Integer age);
//
// //3.根据姓名和年龄查询
// List<EsProduct> findByUserNameAndAge(String userName,Integer age);
//
// //4.根据姓名或年龄查询
// List<EsProduct> findByUserNameOrAge(String userName,Integer age);
//
// //5.查询年龄大于等于25
// List<EsProduct> findByAgeGreaterThanEqual(Integer age);
}
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