Neo4j与springdata集成

1、maven工程需导入的jar包

<!-- neo4j -->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-neo4j</artifactId>
<version>4.1.1.RELEASE</version>
</dependency>

<dependency>
<groupId>org.neo4j.app</groupId>
<artifactId>neo4j-server</artifactId>
<version>2.3.2</version>
</dependency>

2、对应spring的jar包

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>4.2.4.RELEASE</version>
</dependency>

3、加载neo4j的驱动配置

@Configuration
@EnableNeo4jRepositories("com.neo4j.repository")
@EnableTransactionManagement
public class Neo4jApplication extends Neo4jConfiguration {
public static final int NEO4J_PORT = 7474;
@Bean

public SessionFactory getSessionFactory() {

return new SessionFactory("com.neo4j.domain");

}

　　 //配置事务

@Bean

@Qualifier("neo4jTransactionManager")

public Neo4jTransactionManager neo4jTransactionManager() throws Exception {

return new Neo4jTransactionManager(getSession());

}
}

4、连接方式采用httpDriver

添加配置文件ogm.properties

driver=org.neo4j.ogm.drivers.http.driver.HttpDriver
URI=http://neo4j:admin@localhost:7474

5、domain实体配置

//节点注解（可以添加label标签）
@NodeEntity
public class Thing{
        //neo4j中节点的ID
       private Long id;
public Long getId() {

return id;

}
@Override

public boolean equals(Object o) {

if (this == o)

return true;

if (o == null || id == null || getClass() != o.getClass())

return false;

Entity entity = (Entity) o;

if (!id.equals(entity.id))

return false;

return true;

}
@Override

public int hashCode() {

return (id == null) ? -1 : id.hashCode();

}

//属性

private String userId;
private String name;
private String desc;

//配置转换

@DateString("yy-MM-dd")

private Date dateTime;

//设置关系

@Relationship(type = "HAVE_PROP", direction=Relationship.OUTGOING)

List<Property> properties = new ArrayList<Property>();
@Relationship(type = "HAVE_SERVICE", direction=Relationship.OUTGOING)

Set<Service> services = new HashSet<Service>();
@Relationship(type = "HAVE_PROP")

Set<ThingPropRelation> propRelations = new HashSet<ThingPropRelation>();
@Relationship(type = "HAVE_SERVICE")

Set<ThingServiceRelation> serviceRelations = new HashSet<ThingServiceRelation>();
@Relationship(type = "HAVE_SERVICE")

Set<ThingServiceRelation> serviceRelations = new HashSet<ThingServiceRelation>();

}

设置节点的关系

//设置关系实体
@RelationshipEntity(type="HAVE_PROP")
public class ThingPropRelation extends Entity {
    //开始节点
    @StartNode
    Thing thing;
     //结束节点
    @EndNode
    Property property;
public ThingPropRelation() {

}
public Thing getThing() {

return thing;

}
public void setThing(Thing thing) {

this.thing = thing;

}
public Property getProperty() {

return property;

}
public void setProperty(Property property) {

this.property = property;

}

}

6、设置repository

//接口继承GraphRepository
//提供基础的保存修改删除查询功能
//特殊查询可以通过@Query注解实现
public interface ThingRepository extends GraphRepository<Thing> {
    Thing findByName(String name);
@Query("MATCH (t:Thing {name:{0}})-[r:HAVE_PROP]->(p) RETURN p")

Iterable<Property> getThingPropertyByThingName(String thingName);

}

7、应用

@Autowired
private ThingRepository thingRepository; 

调用

Thing thing = thingRepository.findByName("thing");

原文地址：https://www.cnblogs.com/changj/p/6021775.html