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); }
http://localhost:2356/demo/person/陈长兴
