上一篇使用了 CQL 实现了太极拳传承谱，这次使用JAVA SpringBoot 实现，只演示获取信息，源码连接在文章最后
三要素
在知识图谱中，通过三元组 <实体 × 关系 × 属性> 集合的形式来描述事物之间的关系：
- 实体：又叫作本体，指客观存在并可相互区别的事物，可以是具体的人、事、物，也可以是抽象的概念或联系，实体是知识图谱中最基本的元素
- 关系：在知识图谱中，边表示知识图谱中的关系，用来表示不同实体间的某种联系
- 属性：知识图谱中的实体和关系都可以有各自的属性
#输入查看数据库连接
neo4j$ :server status
Spring-Data-Neo4j 和 jpa 非常类似，另外：Neo4jClient 的用法见：https://github.com/neo4j-examples/movies-java-spring-data-neo4j
添加POM引用
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.7.0</version>
<relativePath/>
</parent>
<!-- This is everything needed to work with Spring Data Neo4j 6.0. -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-neo4j</artifactId>
</dependency>
配置 Neo4j 连接信息：
application.yml
server:
port: 8080
spring:
profiles:
active: dev
neo4j:
uri: neo4j://172.16.3.64:7687
authentication:
username: neo4j
password: password
data:
neo4j:
database: neo4j
logging:
level:
org.springframework.data.neo4j: DEBUG
实体 PersonNode.java
package com.vipsoft.web.entity;
import org.springframework.data.neo4j.core.schema.Id;
import org.springframework.data.neo4j.core.schema.Node;
import org.springframework.data.neo4j.core.schema.Property;
@Node("Person")
public class PersonNode {
@Id
private String name;
@Property("generation") //可以 Neo4j 属性映射
private String generation;
public PersonNode(String name, String generation) {
this.name = name;
this.generation = generation;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getGeneration() {
return generation;
}
public void setGeneration(String generation) {
this.generation = generation;
}
}
PersonRepository.java
package com.vipsoft.web.repository;
import com.vipsoft.web.entity.PersonNode;
import org.springframework.data.neo4j.repository.query.Query;
import org.springframework.data.repository.Repository;
import org.springframework.data.repository.query.Param;
import java.util.List;
/**
* This repository is indirectly used in the {@code movies.spring.data.neo4j.api.MovieController} via a dedicated movie service.
* It is not a public interface to indicate that access is either through the rest resources or through the service.
*
* @author Michael Hunger
* @author Mark Angrish
* @author Michael J. Simons
*/
public interface PersonRepository extends Repository<PersonNode, String> {
@Query("MATCH (p:Person) WHERE p.name CONTAINS $name RETURN p")
List<PersonNode> findSearchResults(@Param("name") String name);
}
