我使用 spring-data-neo4j 创建两个节点之间的关系，但该关系不持久。服务器没有抛出异常。当我获取节点时，其中有空值。我正在使用 Neo4jTemplate createRelationshipBetween() 方法。以下是我的代码:
关系实体:
@RelationshipEntity(type=RelationshipTypes.FRIEND)
public class FriendsRelationship extends BaseEntity{
@StartNode
@Getter @Setter
private Person person;
@EndNode
@Getter @Setter
private Person friend;
@Getter @Setter
private String friendsType;
}
public class CreateEntitiesRelationship {
@Autowired
private Neo4jTemplate neo4jTemplate;
-------------------------------
public FriendsRelationship createRelationshipBetweenPersons(Person person, Person friend,
Class<FriendsRelationship> relationshipEntity, String friendshipType) {
FriendsRelationship relationship = neo4jTemplate.createRelationshipBetween(person, friend, relationshipEntity, RelationshipTypes.FRIEND, false);
neo4jTemplate.save(relationship);
return relationship;
}
}
实际问题是什么，我无法弄清楚。我是 Neo4j 的新手。
最佳答案
试试这个代码:
{
Person _person = neo4jTemplate.save(person);
Person _friend = neo4jTemplate.save(friend);
FriendsRelationship relationship = neo4jTemplate.createRelationshipBetween(_person, _friend, relationshipEntity, RelationshipTypes.FRIEND, false);
neo4jTemplate.save(relationship);//optional. saved by default
return relationship;
}
关于java - Spring-Data-Neo4j:无法使用 neo4jtempalte createRelationshipBetween)() 方法创建实体之间的关系，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/27334225/