Java Neo4j spatial withinDistance不返回任何结果

我正在尝试让Neo4j空间插件工作。然而，当我尝试通过REST以不确定性进行查询时，无论是在插件URI还是使用cypher，我都不会得到任何结果，即使我将距离设置为几百万公里。我已经研究过哪个有类似的问题，并且正在索引节点，但仍然没有乐趣。有人能看一下下面的代码并告诉我问题是什么吗？谢谢

private void checkSpatialDB() {
    Client client = ClientBuilder.newClient();
    WebTarget target = client.target(SERVER_ROOT_URI + "ext/SpatialPlugin");
    Response response = target.request(MediaType.APPLICATION_JSON)
            .get(Response.class);

    System.out.println(String.format("Spatial Plugin data:\n" + System.getProperty("line.separator") + "%s",
            response.readEntity(String.class)));
    response.close();
}

private void addSpatialDataTest() {
    String layerProperties = "{ \"layer\" : \"geom\", \"lat\" : \"lat\", \"lon\" : \"lon\" }";

    Client client = ClientBuilder.newClient();
    WebTarget target = client.target(SERVER_ROOT_URI + "ext/SpatialPlugin/graphdb/addSimplePointLayer");
    Response response = target.request(MediaType.APPLICATION_JSON)
            .post(Entity.entity(layerProperties, MediaType.APPLICATION_JSON));

    System.out.println(String.format("Add geometry layer:\n" + System.getProperty("line.separator") + "%s",
            response.readEntity(String.class)));

    response.close();

    // Now add a spatial index
    String indexProperties = "{ \"name\" : \"geom\", \"config\" : {"
            + "\"provider\" : \"spatial\", \"geometry_type\" : \"point\", \"lat\" : \"lat\","
            + "\"lon\" : \"lon\" } }";
    client = ClientBuilder.newClient();
    target = client.target(SERVER_ROOT_URI + "index/node/");
    response = target.request(MediaType.APPLICATION_JSON)
            .post(Entity.entity(indexProperties, MediaType.APPLICATION_JSON));

    System.out.println(String.format("Add geometry index:\n" + System.getProperty("line.separator") + "%s",
            response.readEntity(String.class)));
    response.close();

    // Now add a spatial node
    String yeovil = "{ \"lat\" : 50.9, \"lon\" : -2.6 }";
    client = ClientBuilder.newClient();
    target = client.target(SERVER_ROOT_URI + "node");
    response = target.request(MediaType.APPLICATION_JSON)
            .post(Entity.entity(yeovil, MediaType.APPLICATION_JSON));
    URI newNode = response.getLocation();

    System.out.println(String.format("Add node for Yeovil:\n" + System.getProperty("line.separator") + "%s"
            + "URI for new node [%s]",
            response.readEntity(String.class), newNode));
    response.close();

    // Add the created node to the spatial layer
    String addToLayer = "{ \"layer\" : \"geom\", \"node\" : \"" + newNode + "\" }";
    client = ClientBuilder.newClient();
    target = client.target(SERVER_ROOT_URI + "ext/SpatialPlugin/graphdb/addNodeToLayer");
    response = target.request(MediaType.APPLICATION_JSON)
            .post(Entity.entity(addToLayer, MediaType.APPLICATION_JSON));

    System.out.println(String.format("Add node to spatial layer:\n" + System.getProperty("line.separator") + "%s",
            response.readEntity(String.class)));
    response.close();

    // Add the created node to the geom index
    String addToIndex = "{ \"key\" : \"noKey\", \"value\" : \"noValue\", \"uri\" : \"" + newNode + "\" }";
    client = ClientBuilder.newClient();
    target = client.target(SERVER_ROOT_URI + "index/node/geom");
    response = target.request(MediaType.APPLICATION_JSON)
            .post(Entity.entity(addToIndex, MediaType.APPLICATION_JSON));
    response.close();

    // Now add another spatial node
    String rayleigh = "{ \"lat\" : 51.6, \"lon\" : 0.6 }";
    client = ClientBuilder.newClient();
    target = client.target(SERVER_ROOT_URI + "node");
    response = target.request(MediaType.APPLICATION_JSON)
            .post(Entity.entity(rayleigh, MediaType.APPLICATION_JSON));
    URI anotherNode = response.getLocation();

    System.out.println(String.format("Add node for Yeovil:\n" + System.getProperty("line.separator") + "%s"
            + "URI for new node [%s]",
            response.readEntity(String.class), anotherNode));

    // Add the created node to the spatial layer
    String addAnotherToLayer = "{ \"layer\" : \"geom\", \"node\" : \"" + anotherNode + "\" }";
    client = ClientBuilder.newClient();
    target = client.target(SERVER_ROOT_URI + "ext/SpatialPlugin/graphdb/addNodeToLayer");
    response = target.request(MediaType.APPLICATION_JSON)
            .post(Entity.entity(addAnotherToLayer, MediaType.APPLICATION_JSON));

    System.out.println(String.format("Add node to spatial layer:\n" + System.getProperty("line.separator") + "%s",
            response.readEntity(String.class)));
    response.close();

    // Add the created node to the geom index
    String addAnotherToIndex = "{ \"key\" : \"noKey\", \"value\" : \"noValue\", \"uri\" : \"" + anotherNode + "\" }";
    client = ClientBuilder.newClient();
    target = client.target(SERVER_ROOT_URI + "index/node/geom");
    response = target.request(MediaType.APPLICATION_JSON)
            .post(Entity.entity(addAnotherToIndex, MediaType.APPLICATION_JSON));
    System.out.println(response.readEntity(String.class));
    response.close();
}

private void findSpatialNode() {
    // Find nodes within 135km of Portsmouth - should be Yeovil
    // String queryString = "{ \"layer\" : \"geom\", \"pointX\" : 50.8, \"pointY\" : -1.1, \"distanceInKm\" : 1350 }";
    String queryString = "{ \"query\" : \"start n=node:geom('withinDistance:[50.8, -1.1, 500.0]') return n\" }";
    Client client = ClientBuilder.newClient();
    WebTarget target = client.target(SERVER_ROOT_URI + "cypher");
    Response response = target.request(MediaType.APPLICATION_JSON)
            .post(Entity.entity(queryString, MediaType.APPLICATION_JSON));

    System.out.println(String.format("Sent query [%s], status code [%d]\nShould just get Yeovil in search result:"
            + System.getProperty("line.separator") + "%s", queryString, response.getStatus(),
            response.readEntity(String.class)));
    response.close();
}

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您使用的是哪个版本？将节点添加到索引而不是层本身就足够了（如果层节点已经存在，则可能会导致问题）。