1. 切换到 virtualenv 环境    . /pyenv/bin/activate    2. 安装pymongo    pip install pymongo3. 安装flask_mongoengine    pip install flask_mongoengine

from flask_mongoengine import MongoEngine#--#进行配置app.config[‘MONGODB_SETTINGS‘] = {    ‘db‘    : ‘the_way_to_flask‘,    ‘host‘  : ‘localhost‘,    ‘port‘  : 27017} ＃创建mongo原型mdb = MongoEngine()mdb.init_app(app) class Address(mdb.Document):    name = mdb.StringField()    address = mdb.StringField()        # 查询 Address.objects(name="zhangsan").first()    # 添加 Address(name=‘lisi‘, address=‘lisi@gmail.com‘).save()    # 删除 Address.delete()    # 更新 Address.update(name="lisi@outlook.com")

from models import Addressfrom flask import jsonify#--@app.route(‘/mdb_list‘,methods=[‘get‘])def mdb_list():    name = request.args.get(‘name‘)    address = request.args.get(‘address‘)    Addr = Address.objects(name=name,address=address).first()    if not Addr:        Address(name=name , address=address).save()        return jsonify({‘code‘:1,‘message‘:‘success‘})    else:        return jsonify(Addr.to_json())