springboot+elasticsearch基本使用

1. 导入maven坐标

    		<dependency>
               <groupId>org.springframework.boot</groupId>
               <artifactId>spring-boot-starter-data-elasticsearch</artifactId>
           </dependency>
   

2. application.properties配置文件中配置

   #elasticsearch配置
   spring.data.elasticsearch.cluster-name = elasticsearch
   spring.data.elasticsearch.cluster-nodes = 127.0.0.1:9300
   

3. 创建dao

   public interface ProductResiporty extends ElasticsearchRepository<Productpojo,Integer> {
   
   }
   
   

4. 创建pojo类

   package com.czxy.web.repertory;
   
   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 org.springframework.format.annotation.DateTimeFormat;
   
   import javax.persistence.Column;
   import javax.persistence.GeneratedValue;
   import javax.persistence.GenerationType;
   import java.util.Date;
   
   
   @Document(indexName = "promition",type = "tt")
   
   public class Productpojo {
       @Id
       private Integer id;
       
       @Field(type = FieldType.Auto )
       private String titleImg; // 宣传图片
   
       @Field(type = FieldType.Keyword )
       private String activeScope;// 活动范围
   
       @Field(type = FieldType.Date )
       private Date endDate; // 失效时间
       
       @Field(type = FieldType.Text )
       private String updateUser;// 更新人 后续与后台用户关联
   
       @Field(type = FieldType.Integer )
       private String status = "1"; // 状态 可取值：0 未开始  1.进行中 2. 已结束
   
   	//省略setter个getter方法
   
   

5. controller层同步数据库中的数据到elasticsearch中

   package com.czxy.web.repertory;
   
   import com.czxy.dao.text_delivery.PromotionMapper;
   import com.czxy.domain.teke_delivery.Promotion;
   
   import org.springframework.beans.BeanUtils;
   import org.springframework.beans.factory.annotation.Autowired;
   import org.springframework.web.bind.annotation.GetMapping;
   import org.springframework.web.bind.annotation.RequestMapping;
   import org.springframework.web.bind.annotation.RestController;
   
   import java.util.ArrayList;
   import java.util.List;
   
   @RestController
   @RequestMapping("/estest")
   public class SpringTaskController {
       @Autowired
       private PromotionMapper productMapper;
   
       @Autowired
       private ProductResiporty productResiporty;
   
      @GetMapping("/dj")
       public void DjTask() {
           List<Promotion> products = productMapper.selectAll();
           List<Productpojo> list = new ArrayList<>();
   
           for (Promotion product : products) {
               Productpojo productpojo = new Productpojo();
               BeanUtils.copyProperties(product, productpojo);
               list.add(productpojo);
           }
           productResiporty.saveAll(list);
       }
   
   
   
   }