SQLAlchemy 介绍;
SQLAlchemy是Python编程语言下的一款开源软件。提供了SQL工具包及对象关系映射（ORM）工具，使用MIT许可证发行。
SQLAlchemy“采用简单的Python语言，为高效和高性能的数据库访问设计，实现了完整的企业级持久模型”。SQLAlchemy的理念是，SQL数据库的量级和性能重要于对象 集合；而对象集合的抽象又重要于表和行。因此，SQLAlchmey采用了类似于Java里Hibernate的数据映射模型，而不是其他ORM框架采用的Active Record模型。不过，Elixir 和declarative等可选插件可以让用户使用声明语法。
2.主要描述 SQLAlchemy （创建数据表,增,删,改,查）
2.1 配置MYSQL连接器
"""
“创建flask mysql 连接配置文件；文件名称 config
"""
config 文件内容如下：
##########SQLalchemy 连接数据库示例#######
#dialect+driver://username:password@host:port/database
DIALECT = 'mysql'
DRIVER = 'mysqldb'
USERNAME = 'python'
PASSWORD = '123456'
HOST = '192.168.0.104'
PORT = '3306'
DATABASE = 'Scier'
SQLALCHEMY_DATABASE_URI ="{}+{}://{}:{}@{}:{}/{}?charset=utf8".format(DIALECT,DRIVER,USERNAME,
PASSWORD,HOST,PORT,DATABASE)
SQLALCHEMY_TRACK_MODIFICATIONS = False
2.2 SQLAlchemy 数据库数据表字段设置;
"""
创建数据表和数据字段设置
"""
# -*- coding: utf-8 -*-
import datetime
from flask_sqlalchemy import SQLAlchemy
db = SQLAlchemy()
class ipwhilt(db.Model): #######ip 白名单########
__tablename__ = 'bmc_ipwhilt'
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
ip = db.Column(db.String(24), nullable=True)
desc = db.Column(db.String(128), nullable=True)
owner = db.Column(db.String(64), nullable=True)
create_time = db.Column(db.DateTime(timezone=False), default=datetime.datetime.now())
def to_dict(self):
return {"id": self.id, "ip": self.ip, "desc": self.desc,"owner": self.owner}
class channel(db.Model): ########认证code##########
__tablename__ = 'bmc_channel'
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
uuid = db.Column(db.String(64), nullable=True)
desc = db.Column(db.String(128), nullable=True) ########这个uuid 给谁用###########
owner = db.Column(db.String(64), nullable=True)
uuid_use = db.Column(db.String(64), nullable=True) #######这个uuid 给那个系统使用(用途)
create_time = db.Column(db.DateTime(timezone=False), default=datetime.datetime.now())
def to_dict(self):
return {"id": self.id, "uuid": self.uuid, "desc": self.desc,
"uuid_use": self.uuid_use,"owner": self.owner}
2.3 数据新增功能实现;
from flask import Blueprint
from flask import request, Response
channelUrl = Blueprint('channel', __name__)
@channelUrl.route('/uuid/v1', methods=['GET', 'POST', 'DELETE','PUT'])
def channelMain():
import json
if request.method == "GET":
return anisbleSelectUuidChanne()
elif request.method == "POST":
return channelRun()
elif request.method == "DELETE":
return channelDelete()
elif request.method == "PUT":
return channelRun(True)
else:
data = "不支持该方法02"
return Response(json.dumps({"code": 1, "data": data}), mimetype='application/json')
def channelRun(isUpdate=False):
import json
Data = request.get_json()
channeldesc = Data.get('desc', None)
channelOwner = Data.get('owner', None)
channelUse = Data.get('uuid_use', None)
if channeldesc and channelOwner and channelUse:
try:
if isUpdate:
id = Data.get("id")
data = anisbleAddUuidChannel(channeldesc, channelOwner, channelUse,id)
else:
data = anisbleAddUuidChannel(channeldesc, channelOwner, channelUse)
except Exception as e:
print(e)
data = {"code": 500, "data": "必传参数不能为空", "message": str(e)}
else:
data = {"code": 1, "data": "必传参数不能为空", "message": "failure"}
return Response(json.dumps(data), mimetype='application/json')
def anisbleAddUuidChannel(desc, owner, uuid_use, id=None):
from models import db
from models import channel
import uuid
uuid = str(uuid.uuid1())
try:
if id:
channel.query.filter_by(id=id).update({"desc": desc, "owner": owner, "uuid_use": uuid_use})
msg = "Update Success"
else:
channelDataInsert = channel(desc=desc, owner=owner, uuid=uuid, uuid_use=uuid_use)
db.session.add(channelDataInsert)
data = """你申请{},认证ID: {}""".format(uuid_use, uuid)
db.session.commit()
return {"code": 0, "data": data, "message": msg}
except Exception as e:
print(e)
return {"code": 1, "data": None, "message": str(e)}
2.4 数据新增页面测试;
2.5 数据删除功能实现;
def channelDelete():
import json
Data = request.get_json()
channelId = Data.get('id', None)
data = anisbleDeleteUuidChanne(channelId)
return Response(json.dumps(data), mimetype='application/json')
2.6 数据修改和新增代码一致;
.........................................略
2.6 数据查询;
def anisbleSelectUuidChanne():
import json
from models import channel
from tools.config import ChanneUuidHeader,WhilteUuidField
queryData = channel.query.all()
data=[i.to_dict() for i in queryData]
if "opsAdminForm" in request.args:
return Response(json.dumps({"code": 0, "data":WhilteUuidField}), mimetype="application/json")
else:
try:
queryData = channel.query.all()
return Response(json.dumps(
{"code": 0,"isAdmin":True, "data": data, "columns": ChanneUuidHeader, "message": "success"}),
mimetype='application/json')
except Exception as e:
return Response(json.dumps({"code": 1, "data": str(e), "message": "failure"}), mimetype='application/json')