Question

我正在研究Neo4j Spring Data项目，并希望在节点上执行一些与空间相关的操作。

实体类

@NodeEntity
public class User {

@GraphId
Long id;
private String fname;
private String lname;
private String uname;
private String pwd;
private Double latitude, longitude;

@Indexed(indexType = IndexType.POINT, indexName = "geom")
private String wkt;

public void setLocation(Double lon, Double lat) {
    this.wkt = String.format("POINT( %.2f %.2f )", lon, lat);
}
@RelatedTo(type = "KNOWS", direction = Direction.OUTGOING)
public Set<User> knows;
//getter and setter methods

控制器

  @RequestMapping(path = URI_SAVE, method = RequestMethod.POST)
public String handleUriSave(@ModelAttribute(value = "insuser") User user) {
    System.out.println("save method called");
    System.out.println("User : " + user);
    try {
        User retrivedUser = userService.findUser(user);
        if (retrivedUser != null) {
            if (retrivedUser.getUname().equals(user.getUname())) {
                throw new Exception("User Already Exist !!");
            }
        }
        user.setLocation(user.getLongitude(), user.getLatitude());
        userService.create(user);

UserServiceImpl

    @Service
public class UserServiceImpl implements IUserService {

    @Autowired
    private UserEntityRepository userrepository;

    @Override
    public User create(User user) {
        return userrepository.save(user);
    }

UserEntityRepository

import org.springframework.data.neo4j.repository.GraphRepository;
import org.springframework.data.neo4j.repository.SpatialRepository;
import org.springframework.stereotype.Repository;
import com.ga.data.entity.User;

@Repository
public interface UserEntityRepository extends GraphRepository<User>, SpatialRepository<User> {

    User findByUname(String uname);

}

在保存用户时，它会提供异常，

异常

 java.lang.RuntimeException: Erroraddingelement0wktPOINT(85.4225.02)toindexgeomstatus500{
        "message": "No such property, 'wkt'.",
        "exception": "NotFoundException",
        "fullname": "org.neo4j.graphdb.NotFoundException",
        "stackTrace": [
            "org.neo4j.kernel.impl.core.NodeProxy.getProperty(NodeProxy.java:469)",
            "org.n
    xNodeWrapper.addNode(LegacyIndexNodeWrapper.java:52)",
            "org.neo4j.kernel.impl.api.StateHandlingStatementOperations.nodeAddToLegacyIndex(StateHandlingStatementOperations.java:1420)",
            "org.neo4j.kernel.impl.api.Ope
    LegacyIndexProxy.java:390)",
            "org.neo4j.server.rest.web.DatabaseActions.addToNodeIndex(DatabaseActions.java:699)",
            "org.neo4j.server.rest.web.RestfulGraphDatabase.addToNodeIndex(RestfulGraphDatabase.java:1059)",
            "
    java:745)"
        ],
        "errors": [
            {
                "code": "Neo.DatabaseError.General.UnknownFailure",
                "message": "No such property, 'wkt'.",
                "stackTrace": "org.neo4j.graphdb.NotFoundException: No such property, 'wkt'.\r\n\tat org.neo4j.kernel
    x.add(LayerNodeIndex.java:41)\r\n\tat org.neo4j.gis.spatial.indexprovider.LegacyIndexNodeWrapper.addNode(LegacyIndexNodeWrapper.java:52)\r\n\tat org.neo4j.kernel.impl.api.StateHandlingStatementOperations.nodeAd
    egacyIndexProxy.internalAdd(LegacyIndexProxy.java:536)\r\n\tat org.neo4j.kernel.impl.coreapi.LegacyIndexProxy.add(LegacyIndexProxy.java:390)\r\n\tat org.neo4j.server.rest.web.DatabaseActions.addToNodeIndex(Data
    reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\r\n\tat java.lang.reflect.Method.invoke(Method.java:606)\r\n\tat com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(
    her.dispatch(ResourceJavaMethodDispatcher.java:75)\r\n\tat org.neo4j.server.rest.transactional.TransactionalRequestDispatcher.dispatch(TransactionalRequestDispatcher.java:139)\r\n\tat com.sun.jersey.server.impl
    ri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)\r\n\tat com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)\r\n\tat com.sun.jersey.server.impl.appl
    9)\r\n\tat com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1409)\r\n\tat com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:409)\r\n\tat
    ervletHolder.handle(ServletHolder.java:800)\r\n\tat org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)\r\n\tat org.neo4j.server.rest.web.CollectUserAgentFilter.doFilter(Coll
    a:221)\r\n\tat org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1125)\r\n\tat org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)\r\n\tat org.eclipse.jetty.serv
    ndle(HandlerList.java:52)\r\n\tat org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)\r\n\tat org.eclipse.jetty.server.Server.handle(Server.java:497)\r\n\tat org.eclipse.jetty.server.
    a:620)\r\n\tat org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:540)\r\n\tat java.lang.Thread.run(Thread.java:745)\r\n"
            }
        ]
    }

我是neo4j DB的新手。我已经阅读了一些文章并在neo4j中通过REST API创建了索引，但使用spring数据创建neo4j会产生这种类型的异常。我使用的是neo4j-community-2.3.1-windows版本和spring-data-neo4j 3.4.0 RELEASE版本。

任何建议请。

Answer 1

您使用的是哪个版本的spring-data-neo4j？你在使用spring-data-neo4j-rest吗？还是嵌入在服务器中？

这是以前存在的用户吗？

在异常中似乎缺少一些堆栈跟踪。

你可以用单元测试来重新制作吗？

使用Spring Data neo4j创建空间索引时出错

1 个答案: