Spring boot Neo4j Spring Boot只能将一些实体绑定到数据库，；不是全部

我在项目中使用neo4j spring boot，我注意到只有一些实体绑定到neo4j数据库。例如，我有line和site类：

@NodeEntity(label = "Line")
public class Line {

    @Id
    @GeneratedValue
    private Long lineid;
    private String lineserial;
    private float linelength;
    private String linename;

    public Line() {
    }

    public Line(String lineserial, String linename, float linelength) {
        this.lineserial = lineserial;
        this.linelength = linelength;
        this.linename = linename;
    }

    public Long getLineId() {
        return lineid;
    }

    public void setLineId(Long lineid) {
        this.lineid = lineid;
    }

    public String getLineSerial() {
        return lineserial;
    }

    public void setLineSerial(String lineserial) {
        this.lineserial = lineserial;
    }

    public float getLength() {
        return linelength;
    }

    public void setLineLength(int linelength) {
        this.linelength = linelength;
    }

    public String getLineName() {
        return linename;
    }

    public void setLineName(String linename) {
        this.linename = linename;
    }

    @Relationship(type = "Connect_To", direction = Relationship.OUTGOING)
    private List<Site> cSites;

    public List<Site> getSites() {
        return cSites;
    }

    public void addConnectSite(Site site) {
        if (this.cSites == null) {
            this.cSites = new ArrayList<>();
        }
        this.cSites.add(site);
    }

    @Relationship(type = "Cross_With", direction = Relationship.UNDIRECTED)
    private List<Line> cLines;

    public List<Line> getLines() {
        return cLines;
    }

    public void addCrossLine(Line line) {
        if (this.cLines == null) {
            this.cLines = new ArrayList<>();
        }
        this.cLines.add(line);
    }
}

@NodeEntity(label = "Site")
public class Site {

    @Id
    @GeneratedValue
    private long siteid;
    private String sitename;

    public Site() {
    }

    public Site(String sitename) {
        this.sitename = sitename;
    }

    public long getSiteId() {
        return siteid;
    }

    public void setSiteId(Long siteid) {
        this.siteid = siteid;
    }

    public String getSiteName() {
        return sitename;
    }

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

}

我注意到spring使用了CREATE，而sites使用了MATCH。然而，它们都使用了Neo4jRepository的save功能

---

如果有人能告诉我原因，那将非常有帮助。

解决问题所需的代码更改-

1） 关系方向Neo4j支持单向 此时保持节点到节点关系时的关系。 除此之外，它还允许在发生冲突时建立无向关系 查找

需要更新：

@Relationship（type=“Cross_-With”，direction=Relationship.UNDIRECTED）

到

关系。传出的

或

关系。传入的

参考：

2） Neo4j spring数据支持自动生成包装器类型的Id

• 长的
• 串
  需要更新：

  私有长站点ID而不是
  私有长站点ID
  

---

使用neo4j插入的原因是“@Relationship（type=“Cross_With”，direction=Relationship.UNDIRECTED）”。由于neo4j在创建节点和关系时只支持单向图，但它们允许无方向查找-请参阅，@Jatish感谢您的评论。我将方向更改为外向，然后重试。不幸的是，网站仍然无法插入到数据库中，这似乎是我的项目中的一些其他问题而不是

私有长站点ID？使用它更改访问器和变异器。
@Repository
public interface LineRepository extends Neo4jRepository<Line, Long> {

    Line findByLineserial(@Param("lineserial") String lineserial);

    Collection<Line> findByLinenameLike(@Param("linename") String linename);

    @Query("MATCH (l:Line)-[r:Connect_To]->(S:Site) RETURN l,r,s LIMIT {limit}")
    Collection<Line> graphConnectToSite(@Param("limit") int limit);

    @Query("MATCH (11:Site)-[r:Cross_With]-(lr:Line) RETURN ll,r,lr LIMIT {limit}")
    Collection<Line> graphCrossWithLine(@Param("limit") int limit);
}


@Repository
public interface SiteRepository extends Neo4jRepository<Site, Long> {
    Site findBySitename(@Param("sitename") String sitename);
}

@Service
public class LineService {

    private final static Logger LOG = LoggerFactory.getLogger(LineService.class);

    @Autowired
    private LineRepository lineRepository;

    @Transactional(readOnly = true)
    public Line findByTitle(String serial_number) {
        Line result = lineRepository.findByLineserial(serial_number);
        return result;
    }

    @Transactional(readOnly = true)
    public Collection<Line> findByLineNameLike(String name) {
        Collection<Line> result = lineRepository.findByLinenameLike(name);
        return result;
    }

    @Transactional
    public Line SaveLine(String serial_number, String line_name, float length) {
        if (lineRepository.findByLineserial(serial_number) != null) {
            return null;
        }
        Line line = new Line(serial_number, line_name, length);
        return lineRepository.save(line);
    }
}

@Service
public class SiteService {
    private final static Logger LOG = LoggerFactory.getLogger(SiteService.class);

    @Autowired
    private SiteRepository siteRepository;

    @Transactional(readOnly = true)
    public Site findBySiteName(String site_name) {
        Site result = siteRepository.findBySitename(site_name);
        return result;
    }

    @Transactional
    public Site SaveSite(String site_name) {
        if (siteRepository.findBySitename(site_name) != null) {
            System.out.print(site_name + "is already exist");
            return null;
        }
        Site site = new Site(site_name);
        //System.out.print(site_name+ siteRepository.save(site).getSiteId() + "is added successfully");
        Site result =  siteRepository.save(site);
        return result;
    }
}

2019-11-06 17:19:33.147  INFO 2848 --- [nio-8080-exec-3] o.n.o.drivers.bolt.request.BoltRequest   : Request: MATCH (n:`Site`) WHERE n.`sitename` = { `sitename_0` } WITH n RETURN n, ID(n) with params {sitename_0=site1}
2019-11-06 17:19:33.159  INFO 2848 --- [nio-8080-exec-3] o.n.o.drivers.bolt.request.BoltRequest   : Request: UNWIND {rows} as row MATCH (n) WHERE ID(n)=row.nodeId SET n:`Site` SET n += row.props RETURN row.nodeId as ref, ID(n) as id, {type} as type with params {type=node, rows=[{nodeId=0, props={sitename=site1}}]}
2019-11-06 17:24:10.949  INFO 2848 --- [nio-8080-exec-9] o.n.o.drivers.bolt.request.BoltRequest   : Request: MATCH (n:`Line`) WHERE n.`lineserial` = { `lineserial_0` } WITH n RETURN n,[ [ (n)-[r_c1:`Connect_To`]->(s1:`Site`) | [ r_c1, s1 ] ], [ (n)-[r_c1:`Cross_With`]-(l1:`Line`) | [ r_c1, l1 ] ] ], ID(n) with params {lineserial_0=1254}
2019-11-06 17:24:10.954  INFO 2848 --- [nio-8080-exec-9] o.n.o.drivers.bolt.request.BoltRequest   : Request: UNWIND {rows} as row CREATE (n:`Line`) SET n=row.props RETURN row.nodeRef as ref, ID(n) as id, {type} as type with params {type=node, rows=[{nodeRef=-11, props={linelength=11.2, linename=ABAB, lineserial=1254}}]}