Question

我正在使用Py2neo包来查询位于服务器机器中的数据库。

我的代码段

from py2neo import Graph,authenticate
import time
from py2neo.packages.httpstream import http
http.socket_timeout = 9999


    def dbConnect():
        graph = Graph("http://192.xxx.xxx.xxx:7473/root/neo4j.graphdb")
        print(graph)

        #execute a cypher query
        cypher()

        return 

    def cypher():
        start_time = time.time()
        result = graph.cypher.execute("MATCH (n) RETURN COUNT(n)")
        print(time.time - start_time)
        return 

    if __name__ == '__main__':
        dbConnect()

无法从机器获取数据，而是返回错误，

错误讯息：

<Graph uri=u'http://192.168.204.146:7473/root/neo4j.graphdb/'>
Traceback (most recent call last):
  File "D:\Innominds\Collective[I]\Dev\Graph\Cypher_VS_Api.py", line 30, in <module>
    dbConnect()
  File "D:\Innominds\Collective[I]\Dev\Graph\Cypher_VS_Api.py", line 19, in dbConnect
    cypher()
  File "D:\Innominds\Collective[I]\Dev\Graph\Cypher_VS_Api.py", line 25, in cypher
    result = graph.cypher.execute("MATCH (n) RETURN COUNT(n)")
  File "C:\Python27\lib\site-packages\py2neo\core.py", line 661, in cypher
    metadata = self.resource.metadata
  File "C:\Python27\lib\site-packages\py2neo\core.py", line 213, in metadata
    self.get()
  File "C:\Python27\lib\site-packages\py2neo\core.py", line 258, in get
    response = self.__base.get(headers=headers, redirect_limit=redirect_limit, **kwargs)
  File "C:\Python27\lib\site-packages\py2neo\packages\httpstream\http.py", line 966, in get
    return self.__get_or_head("GET", if_modified_since, headers, redirect_limit, **kwargs)
  File "C:\Python27\lib\site-packages\py2neo\packages\httpstream\http.py", line 943, in __get_or_head
    return rq.submit(redirect_limit=redirect_limit, **kwargs)
  File "C:\Python27\lib\site-packages\py2neo\packages\httpstream\http.py", line 433, in submit
    http, rs = submit(self.method, uri, self.body, self.headers)
  File "C:\Python27\lib\site-packages\py2neo\packages\httpstream\http.py", line 325, in submit
    response = send("peer closed connection")
  File "C:\Python27\lib\site-packages\py2neo\packages\httpstream\http.py", line 318, in send
    return http.getresponse(**getresponse_args)
  File "C:\Python27\lib\httplib.py", line 1074, in getresponse
    response.begin()
  File "C:\Python27\lib\httplib.py", line 415, in begin
    version, status, reason = self._read_status()
  File "C:\Python27\lib\httplib.py", line 379, in _read_status
    raise BadStatusLine(line)
httplib.BadStatusLine: ''

观察，错误消息中的第一行只是代码中的print语句，它将图形对象打印到控制台。并且，http import是一种谷歌知识。

为了从本地计算机访问服务器计算机中的图形数据库，需要进行哪些设置和更改。

Answer 1

首先，您应该检查您的服务器是否可访问，以及是否可以在浏览器中打开Web界面。

您使用标准http端口https连接到7473，并且网址错误。

http://192.xxx.xxx.xxx:7473/root/neo4j.graphdb

您应该尝试将http与7474或https联系到7473。图表网址应该看起来像http://server:port/db/data。尝试：

http://192.xxx.xxx.xxx:7474/db/data
https://192.xxx.xxx.xxx:7473/db/data

此外，您不使用身份验证。你在服务器上禁用了它吗？

py2neo - 无法从远程服务器获取数据

1 个答案: