Python py2neo SocketError：连接被拒绝答案

【问题标题】：Python py2neo SocketError: Connection RefusedPython py2neo SocketError：连接被拒绝
【发布时间】：2015-09-25 13:20:38
【问题描述】：

我正在尝试学习 thisneo4j 教程，但在连接到 API 时遇到问题。这是我的回溯：

>>> 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，因此对正在发生的事情进行人类可读的解释会非常有帮助。

【问题讨论】：

标签： python sockets connection py2neo

【解决方案1】：

您没有显示您的连接代码（Graph 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机器或端口或 (3) 客户端和服务器之间有防火墙，阻止访问。

我建议你尝试从命令行连接到服务器，使用 cURL 或一些类似的工具，然后确保你的 Python 代码附加到相同的位置。

【讨论】：

【解决方案2】：

我遇到此错误是因为我在 .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，它就可以工作了。

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/

【讨论】：