Question

我有两个mysql数据库，一个是localhost，另一个是在服务器中，我将在python中使用flask为该应用程序创建简单的应用程序我想连接两个mysql DB（本地和服务器）。

任何人都请建议如何将多个DB连接到烧瓶中。

app = Flask(__name__)
client = MongoClient()
client = MongoClient('localhost', 27017)
db = client.sampleDB1

如果可能，请提供示例代码。

由于

Answer 1

创建model.py并在其中分隔2个数据库的实例，然后在app.py：

中

app = Flask(__name__)
app.config['MODEL'] = model.my1st_database()
app.config['MODEL2'] = model.my2nd_database()

适合我：）

Answer 2

我遇到了同样的问题，终于解决了。

代替使用

client = MongoClient()
client = MongoClient('localhost', 27017)
db = client.sampleDB1

删除所有内容，然后尝试以下操作：

mongo1 = PyMongo(app, uri = 'mongodb://localhost:27017/Database1')
mongo2 = PyMongo(app, uri = 'mongodb://localhost:27017/Database2')

然后，当您要调用特定数据库时，可以使用：

@app.route('/routenamedb1', methods=['GET'])
def get_data_from_Database1():

Database1 = mongo1.db.CollectionName ##Notice I use mongo1,
#If I wanted to access database2 I would use mongo2

#Walk through the Database for DC to
for s in Database1.find():
#Modifying code
return data

Answer 3

#This technique can be used to connect to multiple databases or database servers:
app = Flask(__name__)

# connect to MongoDB with the defaults
mongo1 = PyMongo(app)

# connect to another MongoDB database on the same host
app.config['MONGO2_DBNAME'] = 'dbname_two'
mongo2 = PyMongo(app, config_prefix='MONGO2')

# connect to another MongoDB server altogether
app.config['MONGO3_HOST'] = 'another.host.example.com'
app.config['MONGO3_PORT'] = 27017
app.config['MONGO3_DBNAME'] = 'dbname_three'
mongo3 = PyMongo(app, config_prefix='MONGO3')

如何在烧瓶中使用多个Mongodb

3 个答案: