最近想自己写 Android 的接口，之前学过一点 Python 基础，打算用 Flask 框架实现，请看下边

一、准备

PyCharm 编译工具

Mysql 数据库

Flask 框架和 SQLAlchemy 库

百度自行安装 Flask 框架和 SQLAlchemy 库

来看数据库：

上代码：

config.py:  配置连接信息dbhost = '127.0.0.1:3306'

dbuser = 'root'

dbpass ='queyiqin'

dbname= 'takeout_db'

DB_URI ='mysql+pymysql://'+dbuser+':'+dbpass+'@'+dbhost+'/'+dbname

SQLALCHEMY_DATABASE_URI = DB_URI

新建 myapp 包

在同一个 myapp 包下

init.py

view.py

model.py

dadabase.py

init.py:from flask import Flask

from flask_sqlalchemy import SQLAlchemy

app = Flask(__name__)

app.secret_key=os.urandom(24) # 设置秘钥防止报错

app.config.from_object('config') #导入配置信息

db = SQLAlchemy(app)  # 顺序要注意

from myapp import view, model# 顺序要注意 下边的

model.py:class User(db.Model):

__tablename__ = 'user' #数据库的表名

id = db.Column(db.Integer, primary_key=True)

username = db.Column(db.String(50), unique=True)

password = db.Column(db.String(50))

phone = db.Column(db.String(50), unique=True)

address = db.Column(db.String(50))

role = db.Column(db.String(50))

def __init__(self, username, password, phone,address,role):

self.username = username

self.password = password

self.phone = phone

self.address = address

self.role = role

def __repr__(self):

return '' % self.user_name

database： 数据库连接from sqlalchemy import create_engine

from sqlalchemy.orm import scoped_session, sessionmaker

from sqlalchemy.ext.declarative import declarative_base

from config import SQLALCHEMY_DATABASE_URI #导入config.py配置信息

# 用来初始化数据库连接

engine = create_engine(SQLALCHEMY_DATABASE_URI, convert_unicode=True)

# 获取连接对象

db_session = scoped_session(sessionmaker(autocommit=False,

autoflush=False,

bind=engine))

#获取对象

Base = declarative_base()

Base.query = db_session.query_property()

def init_db():

#连接

Base.metadata.create_all(bind=engine)

view.py:

这里说明一下 Flask 框架用的是路由，重点是装饰器！

@app.route('/api/login',methods=['POST','GET'])

def login():

try:

phone = request.args.get('phone')

password = request.args.get('password')

user = User.query.filter_by(phone=phone).first()

if user == None:

return formattingData(code=-1,msg='Not account!',data=[])

if user.password == password:

return formattingData(200,msg='Login success.',data={

"id": user.id,

"username": user.username,

"phone": user.phone

})

else:

return formattingData(code=-1,msg='Incorrect password.',data=[])

except KeyError:

return formattingData(code=-1,msg='Sorry,login failed.',data=[])

# 这个方法用于json格式返回

def formattingData(code,msg,data):

return jsonify(

{

"code": code,

"msg" : msg,

"data": data

}

)

接下来运行

test.py:

from myapp  import app

if __name__ == '__main__':

app.run(debug=True,host='0.0.0.0',port=5000)

可在浏览器输入 127.0.0.1:5000/api/login?phone=18078151341&password=queyiqin成功返回数据。