java - neo4j java 查询停止

Question

我有我正在尝试运行的代码示例：

import org.neo4j.rest.graphdb.RestAPI;
import org.neo4j.rest.graphdb.RestAPIFacade;
import org.neo4j.rest.graphdb.query.RestCypherQueryEngine;
import org.neo4j.rest.graphdb.util.QueryResult;
import java.util.Map;
import static org.neo4j.helpers.collection.MapUtil.map;

public class TestRun {
   public static void main(String[] args) {
     System.out.println("starting test");
     final RestAPI api = new RestAPIFacade("http://localhost:7474/db/data");
     System.out.println("API created");
     final RestCypherQueryEngine engine = new RestCypherQueryEngine(api);
     System.out.println("engine created");
     final QueryResult<Map<String,Object>> result = engine.query("start n=node({id}) return n, id(n) as id;", map("id", 0));
     System.out.println("query created");
     for (Map<String, Object> row : result) {
        long id=((Number)row.get("id")).longValue();
        System.out.println("id is " + id);
     }
   }
}

它似乎只是在 QueryResult 的构建中停滞不前。知道为什么它会卡在那里吗？没有错误或异常。

Answer 1

您需要升级到 Neo4j API 的最新版本（目前为 1.9）