springdata操作es

我就是我 2022-11-15 03:45 194阅读 0赞

**1、创建一个maven项目**

**项目结构：**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNTI2Ng_size_16_color_FFFFFF_t_70]

**2、导入依赖**

<dependencies>
        
        <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>4.12</version>
          <scope>test</scope>
        </dependency>
        
        <dependency>
          <groupId>org.springframework.data</groupId>
          <artifactId>spring-data-elasticsearch</artifactId>
          <version>4.1.5</version>
        </dependency>
        
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-test</artifactId>
          <version>5.3.5</version>
        </dependency>
        
        <dependency>
          <groupId>org.projectlombok</groupId>
          <artifactId>lombok</artifactId>
          <version>1.16.20</version>
          <scope>compile</scope>
        </dependency>
        
        <dependency>
          <groupId>org.apache.logging.log4j</groupId>
          <artifactId>log4j-to-slf4j</artifactId>
          <version>2.13.3</version>
        </dependency>
      </dependencies>

**3、添加spring配置文件**

<?xml version="1.0" encoding="UTF-8" ?>
    <beans xmlns="http://www.springframework.org/schema/beans"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:elasticsearch="http://www.springframework.org/schema/data/elasticsearch"
           xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans.xsd
           http://www.springframework.org/schema/data/elasticsearch
           http://www.springframework.org/schema/data/elasticsearch/spring-elasticsearch.xsd">
        
        <elasticsearch:repositories base-package="com.hdit"></elasticsearch:repositories>
        
        <elasticsearch:rest-client id="client"  hosts="http://192.168.184.128:9201,http://192.168.184.128:9202,http://192.168.184.128:9203"></elasticsearch:rest-client>
    
        
        <bean id="elasticsearchTemplate" class="org.springframework.data.elasticsearch.core.ElasticsearchRestTemplate">
            <constructor-arg name="client"  ref="client"></constructor-arg>
        </bean>
    </beans>

**4、编写实体类映射**

package com.hdit.domain;
    
    import lombok.AllArgsConstructor;
    import lombok.Data;
    import lombok.NoArgsConstructor;
    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;
    
    /** * @基本功能: * @ClassName: User * @Description: TODO * @Author: lijiaming * @Date: 2021/3/30 11:15 * @Version 1.0 */
    @Data
    @NoArgsConstructor
    @AllArgsConstructor
    //文档映射：indexName索引库名称，indexStoreType索引类型名称
    @Document(indexName = "hdit", indexStoreType = "users")
    public class User { 
        // @Id表示主键字段
        @Id
    // index该字段是否进行分词，store是否存储，type字段数据类型
    // searchAnalyzer搜索分词器，analyzer存储分词器
        @Field(index = true, store = true, type = FieldType.Integer)
        private Integer id;
        @Field(index = true, store = true, type = FieldType.Text, searchAnalyzer = "ik_smart", analyzer = "ik_smart")
        private String name;
        @Field(index = false, store = true, type = FieldType.Integer)
        private Integer age;
        @Field(index = true, store = true, type = FieldType.Text, searchAnalyzer = "ik_smart", analyzer = "ik_smart")
        private String sex;
    }

**5、编写dao接口**

package com.hdit.dao;
    
    import com.hdit.domain.User;
    import org.springframework.data.domain.Pageable;
    import org.springframework.data.elasticsearch.annotations.Query;
    import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
    
    import java.util.List;
    
    /** * @基本功能: * @ClassName: UserDao * @Description: TODO * @Author: lijiaming * @Date: 2021/3/30 11:14 * @Version 1.0 */
    public interface UserDao extends ElasticsearchRepository<User,Integer> { 
    // （1）方式一，使用父接口的方法进行查询,dao接口不用写。
    //******************************************************************/
    // （2）方式二，使用特定命名规则的自定义方法，如下所示：
        User findByName(String name);
        User findByNameAndId(String name,Integer id);
        List<User> findBySexOrderByAgeDesc(String sex);
        List<User> findBySexOrderByIdDesc(String sex, Pageable p);
    /******************************************************************/
    // （3）方式三，高级查询searcher方法，dao接口不用写。
    //******************************************************************/
    // （4）方式四，使用@Query注解，如下所示：
        @Query("{\"term\":{\"sex\":\"?0\"}}")
        List<User>   queryUsers (String  sex);
    }

**6、测试**

**（1）方式一，使用父接口的方法进行查询。**

**（2）方式二，使用特定命名规则的自定义方法。**

package com.hdit.test;
    
    import com.hdit.dao.UserDao;
    import com.hdit.domain.User;
    import org.junit.Test;
    import org.junit.runner.RunWith;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.data.domain.Page;
    import org.springframework.data.domain.PageRequest;
    import org.springframework.data.domain.Pageable;
    import org.springframework.data.domain.Sort;
    import org.springframework.test.context.ContextConfiguration;
    import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
    import java.util.List;
    import java.util.Optional;
    
    /** * @基本功能: * @ClassName: QueryTest * @Description: TODO * @Author: lijiaming * @Date: 2021/3/30 16:14 * @Version 1.0 */
    @RunWith(SpringJUnit4ClassRunner.class)
    @ContextConfiguration("classpath:applicationContext-es.xml")
    public class QueryTest02 { 
    
        @Autowired
        private UserDao userDao;
    
        @Test
        public void queryAll() { 
            Iterable<User> all = userDao.findAll();
            for (User user : all) { 
                System.out.println(user);
            }
        }
    
        @Test
        public void queryById() { 
            Optional<User> byId = userDao.findById(1);
            User user = byId.get();
            System.out.println(user);
        }
    
        @Test
        public void queryByPage() { 
            Pageable p = PageRequest.of(2, 3);
            Page<User> all = userDao.findAll(p);
            for (User user : all) { 
                System.out.println(user);
            }
        }
    
    
        @Test
        public void queryBySort() { 
            Sort sort = Sort.by(Sort.Order.desc("age"));
            Iterable<User> all = userDao.findAll(sort);
            for (User user : all) { 
                System.out.println(user);
            }
        }
    
        @Test
        public void queryByPageAndSort() { 
            Pageable p = PageRequest.of(0, 3, Sort.by(Sort.Order.desc("age")));
            Page<User> all = userDao.findAll(p);
            for (User user : all) { 
                System.out.println(user);
            }
        }
        @Test
        public void queryByName(){ 
            User user = userDao.findByName("李嘉明");
            System.out.println(user);
        }
        @Test
        public void queryByNameAndId(){ 
            User user = userDao.findByNameAndId("李嘉明",2020001);
            System.out.println(user);
        }
        @Test
        public void queryBySexOrderByAgeDesc(){ 
            List<User> users = userDao.findBySexOrderByAgeDesc("男");
            users.forEach(user -> System.out.println(user));
        }
        @Test
        public void queryBySexOrderByIdDesc(){ 
            Pageable p = PageRequest.of(0,2);
            List<User> users = userDao.findBySexOrderByIdDesc("男",p);
            users.forEach(user -> System.out.println(user));
        }
    
    }

**（3）方式三，高级查询searcher方法。**

package com.hdit.test;
    
    import com.hdit.dao.UserDao;
    import com.hdit.domain.User;
    import org.elasticsearch.index.query.QueryBuilder;
    import org.elasticsearch.index.query.QueryBuilders;
    import org.elasticsearch.index.query.TermQueryBuilder;
    import org.junit.Test;
    import org.junit.runner.RunWith;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.data.domain.Page;
    import org.springframework.data.domain.PageRequest;
    import org.springframework.data.domain.Pageable;
    import org.springframework.data.domain.Sort;
    import org.springframework.test.context.ContextConfiguration;
    import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
    import java.util.List;
    import java.util.Optional;
    
    /** * @基本功能: * @ClassName: QueryTest * @Description: TODO * @Author: lijiaming * @Date: 2021/3/30 16:14 * @Version 1.0 */
    @RunWith(SpringJUnit4ClassRunner.class)
    @ContextConfiguration("classpath:applicationContext-es.xml")
    public class QueryTest03 { 
    
        @Autowired
        private UserDao userDao;
        
        @Test
        public void query01(){ 
            TermQueryBuilder builder = QueryBuilders.termQuery("sex","男");
            Iterable<User> users = userDao.search(builder);
            users.forEach(user -> System.out.println(user));
        }
        @Test
        public void query02(){ 
            TermQueryBuilder builder = QueryBuilders.termQuery("age",22);
            Iterable<User> users = userDao.search(builder);
            users.forEach(user -> System.out.println(user));
        }
    }

**（4）方式四，使用@Query注解**

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