Python信息系统实验：仓库管理
这是给物流管理专业设计的仓库信息管理实验。尽量采用基本的方式组织数据、模块与实验。同时体现Browser-Application Server-Database 的三层逻辑。
实验要求
软件
- 开发工具：Python+ Flask+HTML
- 数据库：SQLite
- 架构：三层架构（Browser+Application Servier+Database）
仓库管理实验
模拟一个简单的仓库的以下基本管理过程：
- 1）库位查询：查询库位编码及其容量
- 2）增加库位
- 3）删除库位
- 4）入库：商品编码、库位
- 5）出库：商品编码
- 6）商品库位查询：根据商品编码找库位
- 7）库位统计
数据库表格
- StorageUnit: scode text, ssize int;
- Storage: scode text, ccode text, cname text, status text (=in, out)
Web Flask
关于Flask请参考前文。Flask可以做很复杂的应用，但是本文仅仅利用其最简单的能力完成几个页面和功能之间的切换。
几分钟做个Web应用
from flask import Flask
from flask import session, redirect, url_for, request
from flask import render_template
数据访问接口
关于数据库及其访问接口，请参考前文。
Python数据库
from Data import Data
导航
采用三组菜单导航
- 基本功能组：主页index、关于about、登录login
- 对存储单元的操纵，主要是列表显示StorageUnitList、增加StorageUnitAdd和删除StorageUnitDelete
- 对存储记录的操纵，主要是列表显示StorageList、增加StorageAdd和删除StorageDelete
- 对于Add和Delete这两类Action，生成表单Form和执行更新分开来，，例如StorageAdd生成Form，而StorageAddExe执行
- 在login，StorageUnitAddExe，StorageUnitDeleteExe，StorageAddExe，StorageDeleteExe中，通过session或request操纵交互数据。
app = Flask(__name__)
@app.route('/')
def index():
if 'username' in session:
return redirect(url_for('StorageUnitList'))
else:
return redirect(url_for('login'))
@app.route('/about')
def about():
return render_template('about.html', name='Flask')
@app.route('/login', methods=['GET', 'POST'])
def login():
if request.method == 'POST':
u = request.form['username']
if u is None or len(u)==0:
return redirect(url_for('login'))
session['username'] = u
return redirect(url_for('StorageUnitList'))
return '''
Warehouse management
'''
@app.route('/StorageUnitList')
def StorageUnitList():
db = Data()
db.createDatabase()
d = db.selectStorageUnit()
return render_template('StorageUnitList.html', data=d)
@app.route('/StorageUnitAdd', methods=['GET', 'POST'])
def StorageUnitAdd():
return '''
Warehouse management --> add a Storage Unit
'''
@app.route('/StorageUnitAddExe', methods=['GET', 'POST'])
def StorageUnitAddExe():
scode = request.form['scode']
ssize = request.form['ssize']
if scode is not None and len(scode)>0 and \
ssize is not None and len(ssize)>0:
db = Data()
db.createDatabase()
db.insertStorageUnit(scode,ssize);
return redirect(url_for('StorageUnitList'))
@app.route('/StorageUnitDelete', methods=['GET', 'POST'])
def StorageUnitDelete():
return '''
Warehouse management --> delete a Storage Unit
'''
@app.route('/StorageUnitDeleteExe', methods=['GET', 'POST'])
def StorageUnitDeleteExe():
scode = request.form['scode']
if scode is not None and len(scode)>0:
db = Data()
db.createDatabase()
db.deleteStorageUnit(scode);
return redirect(url_for('StorageUnitList'))
@app.route('/StorageList')
def StorageList():
db = Data()
db.createDatabase()
d = db.selectStorage()
return render_template('StorageList.html', data=d)
@app.route('/StorageAdd', methods=['GET', 'POST'])
def StorageAdd():
return '''
Warehouse management --> add a Storage
'''
@app.route('/StorageAddExe', methods=['GET', 'POST'])
def StorageAddExe():
scode = request.form['scode']
ccode = request.form['ccode']
cname = request.form['cname']
status = request.form['status']
if scode is not None and len(scode)>0 and ccode is not None and \
len(ccode)>0 and cname is not None and \
len(cname)>0 and status is not None and len(status)>0:
db = Data()
db.createDatabase()
if len(db.selectStorageUnitBy(scode))>0:
db.insertStorage(scode,ccode,cname,status);
return redirect(url_for('StorageList'))
@app.route('/StorageDelete', methods=['GET', 'POST'])
def StorageDelete():
return '''
Warehouse management --> delete a Storage Unit
'''
@app.route('/StorageDeleteExe', methods=['GET', 'POST'])
def StorageDeleteExe():
scode = request.form['scode']
ccode = request.form['ccode']
if scode is not None and len(scode)>0 and \
ccode is not None and len(ccode)>0:
db = Data()
db.createDatabase()
db.deleteStorage(scode, ccode);
return redirect(url_for('StorageList'))
# set the secret key:
app.secret_key = 'A0Zr98j/3yX R~XHH!jmN]LWX/,?RT**^4'
if __name__ == '__main__':
app.run()
# Flask:
# http://docs.jinkan.org/docs/flask/index.html
# Template:
# http://docs.jinkan.org/docs/jinja2/
Web页面
- 如上代码所隐含，使用了一个静态文件，即about.html；
- 使用了两个模板文件，用于生成检索数据库表生成的列表，即StorageList.html和StorageUnitList.html；
- 注意在login，StorageUnitAdd，StorageUnitDelete，StorageAdd，StorageDelete中都生成了Form，这些内容是在浏览器前端显示的。
about.html
Warehouse management: this is just a test application for demonstrating logistics information systems.
Menu |
Storage Unit |
[list] |
[add] |
[delete] |
Storage |
[list] |
[add] |
[delete] |
System |
[about] |
[login] |
[index] |
StorageList.html
Warehouse management -> Storage
Menu |
Storage Unit |
[list] |
[add] |
[delete] |
Storage |
[list] |
[add] |
[delete] |
System |
[about] |
[login] |
[index] |
Storage Unit Code |
Goods Code |
Goods Name |
Status |
{% for a in data %}
|
{{ a[0] }} |
{{ a[1] }} |
{{ a[2] }} |
{{ a[3] }} |
{% endfor %}
StorageUnitList.html
Warehouse management -> Storage Units
Menu |
Storage Unit |
[list] |
[add] |
[delete] |
Storage |
[list] |
[add] |
[delete] |
System |
[about] |
[login] |
[index] |
| Code | Size |
{% for a in data %}
|
{{ a[0] }} |
{{ a[1] }} |
{% endfor %}
测试
在Anaconda Spyder中执行index.py，得到：
* Serving Flask app "index" (lazy loading)
* Environment: production
WARNING: This is a development server. Do not use it in a production deployment.
Use a production WSGI server instead.
* Debug mode: off
* Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
在浏览器输入以下网址测试: http://127.0.0.1:5000/
Login
Storage Unit: List
Storage Unit: Add
Storage Unit: Delete
Storage: List
Storage: Add
Storage: Delete
私信小编01 领取完整代码
（正文已结束）
免责声明及提醒：此文内容为本网所转载企业宣传资讯，该相关信息仅为宣传及传递更多信息之目的，不代表本网站观点，文章真实性请浏览者慎重核实！任何投资加盟均有风险，提醒广大民众投资需谨慎！
