Python ConnectionError（'；<；urllib3.connection.HTTPSConnection对象位于0x7f3a5d760390>；：未能建立新连接：[Errno 111]连接被拒绝'；）

我面临FHIR_解析器使用的urllib的连接错误。此错误发生在对接受患者id的端点的GET请求中。链接到存储库：

请求-2.24.0，urllib3版本：1.25.10，python:3.7

>> from fhir_parser import FHIR
>> fhir = FHIR()
>> patient = fhir.get_patient('8f789d0b-3145-4cf2-8504-13159edaa747')

连接错误

Error
Traceback (most recent call last):
File "/home/joel/.local/lib/python3.7/site-packages/urllib3/connection.py", line 160, in _new_conn
(self._dns_host, self.port), self.timeout, **extra_kw
File "/home/joel/.local/lib/python3.7/site-packages/urllib3/util/connection.py", line 84, in create_connection
raise err
File "/home/joel/.local/lib/python3.7/site-packages/urllib3/util/connection.py", line 74, in create_connection
sock.connect(sa)
ConnectionRefusedError: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/joel/.local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 677, in urlopen
chunked=chunked,
File "/home/joel/.local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 381, in _make_request
self._validate_conn(conn)
File "/home/joel/.local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 978, in _validate_conn
conn.connect()
File "/home/joel/.local/lib/python3.7/site-packages/urllib3/connection.py", line 309, in connect
conn = self._new_conn()
File "/home/joel/.local/lib/python3.7/site-packages/urllib3/connection.py", line 172, in _new_conn
self, "Failed to establish a new connection: %s" % e
urllib3.exceptions.NewConnectionError: <urllib3.connection.HTTPSConnection object at 0x7f3a5d760390>: Failed to establish a new connection: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/joel/.local/lib/python3.7/site-packages/requests/adapters.py", line 449, in send
timeout=timeout
File "/home/joel/.local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 727, in urlopen
method, url, error=e, _pool=self, _stacktrace=sys.exc_info()[2]
File "/home/joel/.local/lib/python3.7/site-packages/urllib3/util/retry.py", line 439, in increment
raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='localhost', port=5001): Max retries exceeded with url: /api/Patient/8f789d0b-3145-4cf2-8504-13159edaa747 (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x7f3a5d760390>: Failed to establish a new connection: [Errno 111] Connection refused'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "", line 1, in
File "/home/joel/.local/lib/python3.7/site-packages/fhir_parser/fhir.py", line 73, in get_patient
response = requests.get(urllib.parse.urljoin(self.endpoint, 'Patient/' + str(id)), verify=self.verify_ssl)
File "/home/joel/.local/lib/python3.7/site-packages/requests/api.py", line 76, in get
return request('get', url, params=params, **kwargs)
File "/home/joel/.local/lib/python3.7/site-packages/requests/api.py", line 61, in request
return session.request(method=method, url=url, **kwargs)
File "/home/joel/.local/lib/python3.7/site-packages/requests/sessions.py", line 530, in request
resp = self.send(prep, **send_kwargs)
File "/home/joel/.local/lib/python3.7/site-packages/requests/sessions.py", line 643, in send
r = adapter.send(request, **kwargs)
File "/home/joel/.local/lib/python3.7/site-packages/requests/adapters.py", line 516, in send
raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPSConnectionPool(host='localhost', port=5001): Max retries exceeded with url: /api/Patient/8f789d0b-3145-4cf2-8504-13159edaa747 (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x7f3a5d760390>: Failed to establish a new connection: [Errno 111] Connection refused'))

错误
回溯（最近一次呼叫最后一次）：
文件“/home/joel/.local/lib/python3.7/site packages/urllib3/connection.py”，第160行，位于康涅狄格州的新州
（self.\u dns\u主机，self.port），self.timeout，**额外\u千瓦
文件“/home/joel/.local/lib/python3.7/site packages/urllib3/util/connection.py”，第84行，在create_connection中
提出错误
文件“/home/joel/.local/lib/python3.7/site packages/urllib3/util/connection.py”，第74行，在create_connection中
sock.connect（sa）
ConnectionRefusedError:[Errno 111]连接被拒绝
在处理上述异常期间，发生了另一个异常：
回溯（最近一次呼叫最后一次）：
文件“/home/joel/.local/lib/python3.7/site packages/urllib3/connectionpool.py”，第677行，在urlopen中
分块的，
文件“/home/joel/.local/lib/python3.7/site packages/urllib3/connectionpool.py”，第381行，在请求中
自我验证连接（连接）
文件“/home/joel/.local/lib/python3.7/site packages/urllib3/connectionpool.py”，第978行，位于康涅狄格州
连接
文件“/home/joel/.local/lib/python3.7/site packages/urllib3/connection.py”，第309行，在connect中
conn=自我。_new_conn（）
文件“/home/joel/.local/lib/python3.7/site packages/urllib3/connection.py”，第172行，位于康涅狄格州的新州
self，“无法建立新连接：%s”%e
urllib3.exceptions.NewConnectionError:：无法建立新连接：[Errno 111]连接被拒绝
在处理上述异常期间，发生了另一个异常：
回溯（最近一次呼叫最后一次）：
文件“/home/joel/.local/lib/python3.7/site packages/requests/adapters.py”，第449行，在send中
超时=超时
urlopen中的文件“/home/joel/.local/lib/python3.7/site packages/urlib3/connectionpool.py”，第727行
方法，url，error=e，_pool=self，_stacktrace=sys.exc_info（）[2]
文件“/home/joel/.local/lib/python3.7/site packages/urllib3/util/retry.py”，第439行，增量
引发MaxRetryError（_池、url、错误或响应错误（原因））
urllib3.exceptions.MaxRetryError:HTTPSConnectionPool（host='localhost'，port=5001）：url超过最大重试次数：/api/Patient/8f789d0b-3145-4cf2-8504-13159edaa747（由NewConnectionError引起（'：未能建立新连接：[Errno 111]连接被拒绝]）
在处理上述异常期间，发生了另一个异常：
回溯（最近一次呼叫最后一次）：
文件“”，第1行，在
文件“/home/joel/.local/lib/python3.7/site packages/fhir\u parser/fhir.py”，第73行，在get\u patient中
response=requests.get（urllib.parse.urljoin（self.endpoint，'Patient/'+str（id）），verify=self.verify\u ssl）
get中第76行的文件“/home/joel/.local/lib/python3.7/site packages/requests/api.py”
返回请求（'get'，url，params=params，**kwargs）
文件“/home/joel/.local/lib/python3.7/site packages/requests/api.py”，请求中的第61行
return session.request（method=method，url=url，**kwargs）
文件“/home/joel/.local/lib/python3.7/site packages/requests/sessions.py”，请求中的第530行
resp=自我发送（准备，**发送）
文件“/home/joel/.local/lib/python3.7/site packages/requests/sessions.py”，第643行，在send中
r=适配器.send（请求，**kwargs）
文件“/home/joel/.local/lib/python3.7/site packages/requests/adapters.py”，第516行，在send中
raise ConnectionError（e，请求=请求）
requests.exceptions.ConnectionError:HTTPSConnectionPool（host='localhost'，port=5001）：url:/api/Patient/8f789d0b-3145-4cf2-8504-13159edaa747超出了最大重试次数（由NewConnectionError引起（'：未能建立新连接：[Errno 111]连接被拒绝]）

此库只是FHIR客户端，没有服务器。所以您必须提供FHIR服务器的地址/URL，默认情况下，它希望服务器在本地主机和端口5001上运行，并使用类似

https://localhost:5001/api/

。或者您需要自己在本地主机上运行FHIR服务器

from fhir_parser import FHIR
fhir = FHIR(endpoint = 'https://SomeServer.com:SomePort/api/')
print(fhir.get_patient('8f789d0b-3145-4cf2-8504-13159edaa747'))

---

看起来您的库希望某些服务器在端口5001上的本地计算机上运行。看看库中的描述，可能你们需要运行一些命令来启动服务器，或者你们应该联系一些服务器来接收数据。因为库从远程服务器下载数据。默认情况下，服务器可能正在本地主机上运行。