尝试执行基本MongoDB查询时，pymongo.errors.ServerSelectionTimeoutError: localhost:27017：[WinError 10061]
我目前正在尝试在我的Flask all应用中实现一个用户创建和登录系统，使用的是MongoDB Atlas (所以它是一个云服务器，我认为这对这个错误有很大的影响)，mongoengine和pymongo (到本文为止都是最新版本)。每当我在create-user表单上提交用户名和密码，并试图通过查询数据库来验证用户名不存在时，我就会收到以下错误消息：
pymongo.errors.ServerSelectionTimeoutError: localhost:27017: [WinError 10061] No connection could be made because the target machine actively refused it下面是完整的回溯：
File "C:\Programming\Python\Lib\site-packages\flask\app.py", line 2463, in __call__
return self.wsgi_app(environ, start_response)
File "C:\Programming\Python\Lib\site-packages\flask\app.py", line 2449, in wsgi_app
response = self.handle_exception(e)
...
rv = self.dispatch_request()
File "C:\Programming\Python\Lib\site-packages\flask\app.py", line 1935, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "C:\Programming\Khimbus\src\client\views\user_views.py", line 27, in create_user
account_exists = find_user_by_username(username)
File "C:\Programming\Khimbus\src\services\user_service.py", line 20, in find_all_users
users = User.objects()
File "C:\Programming\Python\Lib\site-packages\mongoengine\queryset\manager.py", line 37, in __get__
queryset = queryset_class(owner, owner._get_collection())
File "C:\Programming\Python\Lib\site-packages\mongoengine\document.py", line 207, in _get_collection
db.client.is_primary:
File "C:\Programming\Python\Lib\site-packages\pymongo\mongo_client.py", line 1006, in is_primary
return self._server_property('is_writable')
File "C:\Programming\Python\Lib\site-packages\pymongo\mongo_client.py", line 830, in _server_property
server = self._topology.select_server(
File "C:\Programming\Python\Lib\site-packages\pymongo\topology.py", line 229, in select_server
return random.choice(self.select_servers(selector,
File "C:\Programming\Python\Lib\site-packages\pymongo\topology.py", line 188, in select_servers
server_descriptions = self._select_servers_loop(
File "C:\Programming\Python\Lib\site-packages\pymongo\topology.py", line 204, in _select_servers_loopREST端点：
@user_views.route('/create-user', methods=['GET', 'POST'])
def create_user():
if request.method == 'POST':
print('Creating user...')
username = request.form['username']
password = request.form['password']
account_exists = find_user_by_username(username)
if account_exists:
print(f'Error: Account with {username} already exists.')
return render_template('error_page.html')
hashpass = generate_password_hash(password)
user_state.active_account = create_user(username, hashpass)
print(user_state.active_account.username)
session['username'] = user_state.active_account.username
resp = jsonify('Created new account!')
resp.status_code = 200
return resp
return render_template('create_user.html')查找用户方法：
def find_user_by_username(username: str) -> User:
print('Finding user...')
user = User.objects(username=username)
print('Found user' + user)
return user我不确定这里发生了什么，其他相关问题涵盖了不同的错误代码，或者太过时了，无法帮助我使用MongoDB地图集。如有任何信息，我将不胜感激！
更新:已解决
当我安装MongoDB的时候，我并没有把它作为一个Windows服务来安装。我重新安装了它，用户创建现在运行得很好。
回答 3
Stack Overflow用户
发布于 2019-12-04 09:18:19
您提到您正在使用atlas，但错误是连接到localhost。您需要在MongoClient对象中配置atlas连接字符串。
Stack Overflow用户
发布于 2019-12-04 10:10:49
检查mongodb是否正在运行
- 请在您的本地计算机上执行
netstat -tlnp - 从结果
中确保端口27017存在
在本地机器上安装mongodb
请在下面检查：mongodb installation
启动mongodb
systemctl start mongod
Stack Overflow用户
发布于 2021-05-18 00:11:16
来自pythonexamples！我们已经看到了可能导致此错误的原因。交叉检查以下各项以建立到MongoDB实例的连接。
确保您的MongoDB实例正在运行。转到进程并检查mongod.exe是否正在运行。
Windows:进入任务管理器Ubuntu:运行“ps-aef”命令，查找mongod进程，检查您提供的URL是否正确。检查运行Mongo Daemon的IP地址和端口是否正确。
要在pythonexamples上安装MongoDB :请检查:从windows！
https://stackoverflow.com/questions/59166714
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