与Heroku上托管的GraphenendB的连接错误

Question

嗨，我无法连接到端口7687上的localhost-服务器运行吗？每当我的python代码执行

时出错

import os
import json
from urllib.parse import urlparse, urlunparse
from django.shortcuts import render
# Create your views here.
from py2neo import Graph, authenticate
from bottle import get,run,request,response,static_file
from py2neo.packages import neo4j
url = urlparse(os.environ.get("GRAPHENEDB_GOLD_URL"))
url_without_auth = urlunparse((url.scheme, ("{0}:{1}").format(url.hostname, url.port), '', None, None, None))
user = url.username
password = url.password
authenticate(url_without_auth,user, password)
graph = Graph(url_without_auth, bolt = False)
#graph = Graph(password='vjsj56@vb')

@get("/")
def get_index():
    return static_file("index.html", root="static")

@get("/graph")
def get_graph(self):
    print("i was here" )
    print("graph start")
    results = graph.run(
        "MATCH (m:Movie)<-[:ACTED_IN]-(a:Person) "
        "RETURN m.title as movie, collect(a.name) as cast "
        "LIMIT {limit}", {"limit": 10})
    print("graph run the run")
    nodes = []
    rels = []
    i = 0
    for movie, cast in results:
        #print("i am here")
        nodes.append({"title": movie, "label": "movie"})
        target = i
        i += 1
        for name in cast:
            print(name)
            actor = {"title": name, "label": "actor"}
            try:
                source = nodes.index(actor)
            except ValueError:
                nodes.append(actor)
                source = i
                i += 1
            rels.append({"source": source, "target": target})
    return {"nodes": nodes, "links": rels}

@get("/search")
def get_search():
    try:
        q = request.query["q"]
    except KeyError:
        return []
    else:
        results = graph.run(
            "MATCH (movie:Movie) "
            "WHERE movie.title =~ {title} "
            "RETURN movie", {"title": "(?i).*" + q + ".*"})
        response.content_type = "application/json"
        return json.dumps([{"movie": dict(row["movie"])} for row in results])

@get("/movie/<title>")
def get_movie(title):
    results = graph.run(
        "MATCH (movie:Movie {title:{title}}) "
        "OPTIONAL MATCH (movie)<-[r]-(person:Person) "
        "RETURN movie.title as title,"
        "collect([person.name, head(split(lower(type(r)),'_')), r.roles]) as cast "
        "LIMIT 1", {"title": title})
    row = results.next()
    return {"title": row["title"],
            "cast": [dict(zip(("name", "job", "role"), member)) for member in row["cast"]]}

此代码在我的本地syatem上运行良好，但是在Heroku和GraphenedB上部署时给出连接错误

例外位置：/app/.heroku/python/lib/python3.6/site-packages/py2neo/packages/neo4j/v1/connection.py in connect中，行387

Answer 1

我是Juanjo，来自GraphenendB。

乍一看，代码看起来不错，错误代码指向错误的URL。环境变量可能是一个问题。您可以检查您的GraphenendB_Gold_url变量吗？

您可以这样做：

$ heroku config:get GRAPHENEDB_GOLD_URL

应该是：

http://<user>:<pass>@XXX.graphenedb.com:24789/db/data

(请在此处分享您的URL(

如果您的变量为空，请在检索GraphenendB环境变量上阅读更多信息。

如果这不是您的问题，或者问题仍然存在，您可以通过我们的管理面板上的支持链接与我们联系吗？Heroku团队将向我们转发支持票，我们将获得与您注入机票的数据库有关的所有信息。

谢谢，

Juanjo