基于spring-boot-starter-data-neo4j操作Neo4j数据库

我翻阅了好多基于spring-boot-starter-data-neo4j来操作neorj数据库的博客，总之没有找到我想要的答案，现在按照自己的思路搞出来了，特分享下：

思路：

　　1.我想让不同类型的节点都可以用同一种关系，通过属性来区分关系类别

　　　　 比如 唐僧和孙悟空是师徒关系，孙悟空拥有金箍棒 人物有：唐僧、孙悟空；武器有：金箍棒

 

 

      2.不同的节点都具有共同的属性，可以方便进行关系的CRUD

 

进入正题：

1.包结构如图：

 

 

 

 

 3.pom文件：

<?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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.ikcai</groupId>
    <artifactId>enginegraph</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>EngineGraph</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-neo4j</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- add this dependency if you want to use the embedded driver -->
        <dependency>
            <groupId>org.neo4j</groupId>
            <artifactId>neo4j-ogm-embedded-driver</artifactId>
        </dependency>

        <!-- add this dependency if you want to use the HTTP driver -->
        <dependency>
            <groupId>org.neo4j</groupId>
            <artifactId>neo4j-ogm-http-driver</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

4.配置文件：GraphDBConfiguration

package com.ikcai.enginegraph.config;

/**
 * @类功能说明: neo4j配置类
 * @创建人: 赵力
 * @创建时间: 2019-01-22 11:56
 */

import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.neo4j.repository.config.EnableNeo4jRepositories;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@Configuration
@EnableNeo4jRepositories(basePackages = "com.ikcai.enginegraph.respository")
@EntityScan(basePackages = "com.ikcai.enginegraph.domain")
@EnableTransactionManagement
public class GraphDBConfiguration{
}

5.关系实体对象 BaseRelationship

package com.ikcai.enginegraph.domain.base;

import com.fasterxml.jackson.annotation.JsonIgnore;
import com.ikcai.enginegraph.constant.NodeType;
import com.ikcai.enginegraph.domain.base.abs.AllBaseEntity;
import org.neo4j.ogm.annotation.EndNode;
import org.neo4j.ogm.annotation.Property;
import org.neo4j.ogm.annotation.RelationshipEntity;
import org.neo4j.ogm.annotation.StartNode;

import java.time.LocalDateTime;

/**
 * @类功能说明: 关系实体对象
 * @创建人: 赵力
 * @创建时间: 2019-01-23 10:58
 */
@RelationshipEntity(type=NodeType.REF)
public class BaseRelationship<S extends BaseNode, E extends BaseNode> extends AllBaseEntity {

    @Property
    private String name; //关系名称

    @Property
    private String createTime; //创建时间

    @JsonIgnore
    @StartNode
    private S start;

    @JsonIgnore
    @EndNode
    private E end;

    public BaseRelationship(){
    }

    public BaseRelationship(String name,S start,E end){
        this.name =name;
        this.createTime=LocalDateTime.now().toString();
        this.start=start;
        this.end=end;
    }

    @Override
    public String toString() {
        return "BaseRelationship{" +
                "name='" + name + '\'' +
                ", createTime='" + createTime + '\'' +
                ", start=" + start +
                ", end=" + end +
                '}';
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getCreateTime() {
        return createTime;
    }

    public void setCreateTime(String createTime) {
        this.createTime = createTime;
    }

    public S getStart() {
        return start;
    }

    public void setStart(S start) {
        this.start = start;
    }

    public E getEnd() {
        return end;
    }

    public void setEnd(E end) {
        this.end = end;
    }
}

6.基础节点对象 BaseNode

package com.ikcai.enginegraph.domain.base;

import com.ikcai.enginegraph.constant.NodeType;
import com.ikcai.enginegraph.domain.base.abs.AllBaseEntity;
import org.neo4j.ogm.annotation.Relationship;

import java.util.Set;

/**
 * @类功能说明: 基础节点对象
 * @创建人: 赵力
 * @创建时间: 2019-01-23 10:58
 */
public class BaseNode extends AllBaseEntity {

    private String name; //名称

    @Relationship(type=NodeType.REF)
    private Set<BaseRelationship> relationships; //关系列表

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Set<BaseRelationship> getRelationships() {
        return relationships;
    }

    public void setRelationships(Set<BaseRelationship> relationships) {
        this.relationships = relationships;
    }
}

7.具体代码位置：https://gitee.com/mailzhaoli/enginegraph/tree/master

 

8.测试：

　　8.1添加任务关系：

 

　　8.2添加人物武器关系