String-Data
- 建立專案，設定包名com.cn.es
- 引入pom依賴
<?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.cn.es</groupId>
<artifactId>es-spring</artifactId>
<version>1.0</version>
<parent>
<artifactId>spring-boot-starter-parent</artifactId>
<groupId>org.springframework.boot</groupId>
<version>2.3.6.RELEASE</version>
<relativePath/>
</parent>
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-test</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot</artifactId>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-autoconfigure</artifactId>
<version>2.7.13</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
</dependencies>
</project>
建立application.properties
#esIP地址
elasticsearch.host=127.0.0.1
#es埠號碼
elasticsearch.port=9200
#設定日誌級別為debug
logging.level.com.cn.es=debug
建立啟動類
package com.cn.es;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SpringDataEsMainApplication {
public static void main(String[] args) {
SpringApplication.run(SpringDataEsMainApplication.class,args);
}
}
建立ES的配置類
package com.cn.es.config;
import lombok.Data;
import org.apache.http.HttpHost;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestClientBuilder;
import org.elasticsearch.client.RestHighLevelClient;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.elasticsearch.config.AbstractElasticsearchConfiguration;
@Data
@ConfigurationProperties(prefix = "elasticsearch")
@Configuration
public class ElasticsearchConfig extends AbstractElasticsearchConfiguration {
private String host ;
private Integer port ;
@Override
public RestHighLevelClient elasticsearchClient() {
RestClientBuilder builder = RestClient.builder(new HttpHost(host, port));
RestHighLevelClient restHighLevelClient = new RestHighLevelClient(builder);
return restHighLevelClient;
}
}
建立實體類
package com.cn.es.domain;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.ToString;
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;
@Data
@AllArgsConstructor
@NoArgsConstructor
@ToString
@Document(indexName = "product",shards = 3,replicas = 1)
public class Product {
@Id
private Long id;//商品唯一標識
@Field(type = FieldType.Text)
private String title;//商品名稱
//不做分詞處理
@Field(type = FieldType.Keyword)
private String category;//分類名稱
@Field(type = FieldType.Double)
private Double price;//商品價格
//不做分詞處理，不做索引關聯，不能透過索引路徑查詢
@Field(type = FieldType.Keyword,index = false)
private String images;//圖片地址
}
建立DAO層
package com.cn.es.dao;
import com.cn.es.domain.Product;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
import org.springframework.stereotype.Repository;
@Repository
public interface ProductDao extends ElasticsearchRepository<Product,Long> {
}
建立test類查詢：
package com.cn.es.test;
import com.cn.es.dao.ProductDao;
import com.cn.es.domain.Product;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import java.util.ArrayList;
import java.util.List;
@RunWith(SpringRunner.class)
@SpringBootTest
public class SpringDataProductDaoTest {
@Autowired
private ProductDao productDao;
/**
* 新增任務
*/
@Test
public void save () {
Product product = new Product();
product.setId(2L);
product.setTitle("華為手機");
product.setCategory("手機");
product.setPrice(2999.0);
product.setImages("http://hw.jpg");
productDao.save(product);
}
//相同id就是更新
@Test
public void update () {
Product product = new Product();
product.setId(2L);
product.setTitle("小米手機");
product.setCategory("手機");
product.setPrice(29999.0);
product.setImages("http://xm.jpg");
productDao.save(product);
}
@Test
public void findById(){
Product product = productDao.findById(2L).get();
System.out.println(product);
}
@Test
public void findAll(){
Iterable<Product> products = productDao.findAll();
for (Product product : products)
{
System.out.println(product);
}
}
@Test
public void delete(){
Product product=new Product();
product.setId(1L);
productDao.delete(product);
}
//批次新增
@Test
public void saveAll(){
List<Product> productList = new ArrayList<>();
for (int i = 0; i < 10; i++) {
Product product = new Product();
product.setId(Long.valueOf(i));
product.setTitle("[" + i + "]小米手機");
product.setCategory("手機");
product.setPrice(1999.0 + i);
product.setImages("http://www.xm.jpg");
productList.add(product);
}
}
/**
term查詢
search(termQueryBuilder)呼叫搜尋方法，引數查詢構建器物件
*/
@Test
public void termQuery(){
TermQueryBuilder termQueryBuilder=QueryBuilders.termsQuery("title","小米");
Iterable<Product> pros = productDao.search(termQueryBuilder);
for(Product product:pros){
System.out,printLn(product);
}
}
/**
term查詢,分頁查詢
*/
@Test
public void termQueryByPage(){
int currentPage=0;
int pageSize=5;
//設定查詢分頁
PageRequest pageRequest = PageRequest.of(currentPage,pageSize);
TermQueryBuilder termQueryBuilder = QueryBuilders.termsQuery("category","小米");
Iterable<Product> pros = productDao.search(termQueryBuilder,pageRequest);
for(Product product:pros){
System.out,println(product);
}
}
}