Python 使用flask_pymongo时身份验证失败

我确信MONGO_URI是正确的，因为它在pymongo中运行良好。 但是当使用flask_pymongo时，它不起作用。。。 以下是我的测试代码：

from flask import Flask
from flask_pymongo import PyMongo
app = Flask(__name__)

app.config['MONGO_URI'] ='mongodb://root:aaa2016@localhost:27017/mongo_test'
mongo = PyMongo(app, config_prefix='MONGO')


@app.route('/')
def hello_world():
    mongo.db.user.insert({'username': "aaa"})
    return 'Hello World!'


if __name__ == '__main__':
    app.run()

运行它并访问127.0.0.1:5000，给出500的响应

OperationFailure: Authentication failed.
127.0.0.1 - - [21/Jun/2016 20:40:25] "GET / HTTP/1.1" 500 -

任何帮助都将不胜感激

更新： 以下是回溯：

File "C:\Python27\lib\site-packages\flask\app.py", line 2000, in __call__
return self.wsgi_app(environ, start_response)
File "C:\Python27\lib\site-packages\flask\app.py", line 1991, in wsgi_app
response = self.make_response(self.handle_exception(e))
File "C:\Python27\lib\site-packages\flask\app.py", line 1567, in       handle_exception
reraise(exc_type, exc_value, tb)
File "C:\Python27\lib\site-packages\flask\app.py", line 1988, in wsgi_app
response = self.full_dispatch_request()
File "C:\Python27\lib\site-packages\flask\app.py", line 1641, in  full_dispatch_request
rv = self.handle_user_exception(e)
File "C:\Python27\lib\site-packages\flask\app.py", line 1544, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "C:\Python27\lib\site-packages\flask\app.py", line 1639, in full_dispatch_request
rv = self.dispatch_request()
File "C:\Python27\lib\site-packages\flask\app.py", line 1625, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "F:\PycharmProjects\flask_\flask_.py", line 12, in hello_world
mongo.db.user.insert({'username': "aaa"})
File "C:\Python27\lib\site-packages\pymongo\collection.py", line 2203, in insert
with self._socket_for_writes() as sock_info:
File "C:\Python27\lib\contextlib.py", line 17, in __enter__
return self.gen.next()
File "C:\Python27\lib\site-packages\pymongo\mongo_client.py", line 718, in _get_socket
with server.get_socket(self.__all_credentials) as sock_info:
File "C:\Python27\lib\contextlib.py", line 17, in __enter__
return self.gen.next()
File "C:\Python27\lib\site-packages\pymongo\server.py", line 152, in get_socket
with self.pool.get_socket(all_credentials, checkout) as sock_info:
File "C:\Python27\lib\contextlib.py", line 17, in __enter__
return self.gen.next()
File "C:\Python27\lib\site-packages\pymongo\pool.py", line 541, in get_socket
sock_info.check_auth(all_credentials)
File "C:\Python27\lib\site-packages\pymongo\pool.py", line 306, in  check_auth
auth.authenticate(credentials, self)
File "C:\Python27\lib\site-packages\pymongo\auth.py", line 436, in authenticate
auth_func(credentials, sock_info)
File "C:\Python27\lib\site-packages\pymongo\auth.py", line 416, in _authenticate_default
return _authenticate_scram_sha1(credentials, sock_info)
File "C:\Python27\lib\site-packages\pymongo\auth.py", line 188, in _authenticate_scram_sha1
res = sock_info.command(source, cmd)
File "C:\Python27\lib\site-packages\pymongo\pool.py", line 213, in command
read_concern)
File "C:\Python27\lib\site-packages\pymongo\network.py", line 99, in command
helpers._check_command_response(response_doc, None, allowable_errors)
File "C:\Python27\lib\site-packages\pymongo\helpers.py", line 196, in _check_command_response
raise OperationFailure(msg % errmsg, code, response)
OperationFailure: Authentication failed.

---

问题是，如果使用

MONGO_URI

config参数，pymongo将尝试根据字符串中包含的db名称进行身份验证。您应该将配置参数分解为以下内容，以便可以指定db名称和身份验证源

app.config['MONGO_HOST'] = 'localhost'
app.config['MONGO_PORT'] = '27017'
app.config['MONGO_DBNAME'] = 'mongo_test'
app.config['MONGO_USERNAME'] = 'root'
app.config['MONGO_PASSWORD'] = 'aaa2016'
app.config['MONGO_AUTH_SOURCE'] = 'admin' . # root user is typically defined in admin db

---

这个问题可能很老，但我也遇到了同样的问题，并找到了另一个可能适用于其他人的解决方案

将

？authSource=admin

附加到

MONGO_URI

变量的末尾将根据管理员数据库而不是您连接的数据库验证您的凭据

例如：

app.config[“MONGO_URI”]=”mongodb://username:password@主机：port/db_name？authSource=admin“

如果您正在使用app.config['MONGODB_*']”使用并设置mongo配置，那么您的uri将从这些变量生成，例如：

app.config['MONGODB_DB'] = 'project1'
app.config['MONGODB_HOST'] = '192.168.1.35'
app.config['MONGODB_PORT'] = 12345
app.config['MONGODB_USERNAME'] = 'webapp'
app.config['MONGODB_PASSWORD'] = 'pwd123'

但是，如果您需要向uri添加一些额外的参数（例如查询参数

authSource=admin

），则必须通过

app.config['MONGODB\u SETTINGS']传递mongo config

app.config['MONGODB_SETTINGS'] = {
    'connect': False,
    'host': 'mongodb://webapp:pwd123@192.168.1.35:12345/project1?authSource=admin'
}

---

你能给我们看一下你用来确认它在直接使用PyMongo时有效的代码吗？

import PyMongo

connection=PyMongo.MongoClient（'mongodb://root:aaa2016@本地主机：27017/'）

db=connection.mongo\u test

db.user.insert（{'username'：“aaa”}）

它工作正常……。@dim请回答您的原始问题，并确保包含所有相关代码。导入PyMongo不足以确认您可以连接到数据库。这里有我所有的测试代码，它们与@dirnMay中向我显示的视频几乎相同。我想问为什么

MONGO\u AUTH\u SOURCE

至关重要？我执行

db.authenticate（name=xx，password=xxx）

，它失败了。但是通过添加

source='admin'

，它成功了。我相信这会让pymongo知道哪个db表包含要进行身份验证的凭据。