Question

我正在尝试跟进this neo4j教程，我遇到连接API的问题。这是我的追溯：

>>> graph.delete_all()

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python2.7/site-packages/py2neo/core.py", line 748,    in     delete_all
 statement = StartOrMatch(self).relationship("r", "*").string + "DELETE r"
 File "/usr/local/lib/python2.7/site-packages/py2neo/cypher/util.py", line 45, in string
if self.graph.supports_start_clause:
File "/usr/local/lib/python2.7/site-packages/py2neo/core.py", line 1105, in    supports_start_clause
return self.neo4j_version < (2, 2)
 File "/usr/local/lib/python2.7/site-packages/py2neo/core.py", line 964, in    neo4j_version
return version_tuple(self.resource.metadata["neo4j_version"])
File "/usr/local/lib/python2.7/site-packages/py2neo/core.py", line 213, in metadata
self.get()
File "/usr/local/lib/python2.7/site-packages/py2neo/core.py", line 258, in get
response = self.__base.get(headers=headers, redirect_limit=redirect_limit,   **kwargs)
File "/usr/local/lib/python2.7/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 "/usr/local/lib/python2.7/site-packages/py2neo/packages/httpstream/http.py", line 943, in __get_or_head
return rq.submit(redirect_limit=redirect_limit, **kwargs)
File "/usr/local/lib/python2.7/site-packages/py2neo/packages/httpstream/http.py", line 433, in submit
http, rs = submit(self.method, uri, self.body, self.headers)
File "/usr/local/lib/python2.7/site-packages/py2neo/packages/httpstream/http.py", line 362, in submit
raise SocketError(code, description, host_port=uri.host_port)
py2neo.packages.httpstream.http.SocketError: Connection refused

我是网络/套接字连接的新手，所以对所发生的事情进行人类可读的解释会非常有帮助。

Answer 1

您没有显示您的连接代码（图形构造函数）或提及您的设置，但此错误的常见原因是（1）服务器未运行，（2）客户端连接到错误的计算机或端口或（3）客户端和服务器之间有防火墙，阻止访问。

我建议您尝试使用cURL或类似工具从命令行连接到服务器，然后确保您的Python代码附加到同一位置。

Answer 2

我遇到此错误，因为我在.properties文件中指定了IP地址，但我使用localhost进行连接。一旦我在两个地方都使用了IP地址就可以了。

在/etc/neo4j/neo4j-server.properties

中

org.neo4j.server.webserver.address = 1.2.3.4

API网址：

http://neo4j:mypassword@1.2.3.4:7474/db/data/

Python py2neo SocketError：拒绝连接

2 个答案: