吐槽一下
经过一段时间学习pymysql的经历，我深刻的体会到了pymysql的不靠谱之处；
就是在使用int型传参，我写的sql语句中格式化%d了之后，我在要传入的数据传递的每一步的去强制转换了，但是他还是会报错，说我的传入参数是string，他要int，我真笑了，最后把%d换成%s结果可以了，，，然后经过我查资料才了解到pymysql他这个库会去自动匹配类型，那也就是说在使用过程中可以对数据类型的关注可以降低一点，让库来给我解决数据类型不匹配的问题。
好了，吐槽就完了，然后就是现在的代码以及内容展示了
可视化展示
登录
在这里会去获取mysql中数据库db1的表user中的数据，然后会进行判断，成立下一步，不成立，会弹出弹窗，进行警告，成立就进入菜单
然后点击左上角的”点击进行操作吧“下面的按钮是假的哈哈哈哈哈哈哈哈哈。
编辑操作
这里删除之后需要关闭系统，可能是因为我这里有缓存的原因
查询操作
在这里去查询所有信息就会返回如图弹窗
按学号查询
按姓名查询
按性别查询
按年龄查询
按专业查询
别问我为什么不在这里去做个选择菜单，那就和性别一样了，懒得再进行加工了
按照班级查询
代码
main文件
from GUI import GUI
if __name__ == '__main__':
gui = GUI()
gui.get_in()
GUI文件
import PySimpleGUI as sg
from LoginDatabase import LoginDatabase
from Editor import Editor
from Find import Find
sg.theme('BlueMono')
class GUI(object):
def __init__(self):
self.db_login_conn = LoginDatabase()
self.db_login = self.db_login_conn.login_database_connect_gui()
self.find = Find()
self.editor = Editor()
def get_in(self):
layout = [
[sg.Image(r'E:\Student_Manager_MySQL\th.png')],
[sg.T('账号'), sg.InputText(default_text='1', key='first')],
[sg.T('密码'), sg.InputText(default_text='1', key='second')],
[sg.B('登录', key='login', button_color='blue'), sg.B('重置', key='rollback', button_color='blue')]
]
window = sg.Window('登录框', layout, text_justification='center')
while True:
event, values = window.read()
if event is None:
break
if event == 'login':
sg.popup_auto_close('进入检测中，请等待')
if values['first'] == self.db_login[0] and values['second'] == self.db_login[1]:
sg.popup_auto_close("账号密码正确,请做好准备，即将进入系统——3 2 1 ")
self.menu()
else:
sg.popup_auto_close('输入账号或密码错误，你到底是谁，再错我可要报警了奥')
if event == 'rollback':
window['first'].update('')
window['second'].update('')
window.close()
def menu(self):
menu_def = [
['点击进行操作吧', ['添加学生', '删除学生', '修改学生', '查询学生']]
]
layout = [
[sg.Image(r'E:\Student_Manager_MySQL\th.png')],
[sg.T('您好，欢迎您使用本系统，请进行操作', size=(20, 5), font=('宋体', 15))],
[sg.Menu(menu_def, key='manage_student', size=(20, 20), font=(15, 20))],
[sg.B('点击进入系统', size=(10, 5), button_color='blue', key='点击进入系统'),
sg.B('点击退出系统', size=(10, 5), button_color='red', key='点击退出系统')]
]
window = sg.Window('菜单', layout=layout)
while True:
event, values = window.read()
if event in (None, '退出'):
break
if event == '添加学生':
sg.popup_auto_close('你就添加吧，等一会再告诉你怎么写')
self.add_student_gui()
if event == '查询学生':
self.find_student_gui()
if event == '修改学生':
self.change_student_gui()
if event == '删除学生':
self.delete_student_gui()
if event == '点击进入系统':
sg.popup_auto_close('被骗了吧，哈哈哈哈哈', button_color='red')
if event == '点击退出系统':
sg.popup_auto_close('这是真的退出了')
break
window.close()
# 添加学生信息
def add_student_gui(self):
layout = [
[sg.T("姓名"), sg.In(default_text='请不要设置过长', key='-name-')],
[sg.T("性别"), sg.OptionMenu(values=['男', '女'], key='-gender-')],
[sg.T("年龄"), sg.In(default_text='请输入整数（必须输入内容）', key='-age-')],
[sg.T("专业"), sg.OptionMenu(values=['软件工程', '物联网工程', '大数据', '网络工程'], key='-major-')],
[sg.T("班级"), sg.Combo(values=['1班', '2班'], key='-classroom-')],
[sg.B(button_text="添加", key='-add-'), sg.B(button_text="退出", key='-exit-')]
]
window = sg.Window(title='添加学生', layout=layout)
while True:
event, values = window.read()
if event is None:
break
if event == '-exit-':
break
if event == '-add-':
# print(int(values['-age-']))
# print(type(int(values['-age-'])))
(self.editor.insert_student
(values['-name-'], values['-gender-'],
values['-classroom-'], int(values['-age-']), values['-major-']))
sg.popup_auto_close('添加成功')
window.close()
# 查询学生信息
def find_student_gui(self):
layout = [
[sg.B('按照学号查询', key='find_id')],
[sg.B('按照姓名查询', key='find_name')],
[sg.B('按照性别查询', key='find_gender')],
[sg.B('按照年龄查询', key='find_age')],
[sg.B('按照专业查询', key='find_major')],
[sg.B('按照班级查询', key='find_classroom')],
[sg.B('查询所有信息', key='find_all')]
]
window = sg.Window('查询学生', layout)
while True:
event, values = window.read()
if event is None:
break
if event == 'find_id':
layout_id = [
[sg.T('请输入要查询的学生学号id'), sg.In('', key='id')],
[sg.B('确认', key='id_ok')]
]
window_id = sg.Window('查询学生id', layout_id)
while True:
event_id, values_id = window_id.read()
if event_id is None:
break
if event_id == 'id_ok':
sg.popup(self.find.find_id(int(values_id['id'])))
window_id.close()
if event == 'find_name':
layout_name = [
[sg.T('请输入要查询的学生姓名name'), sg.In('', key='name')],
[sg.B('确认', key='name_ok')]
]
window_name = sg.Window('查询学生姓名name', layout_name)
while True:
event_name, values_name = window_name.read()
if event_name is None:
break
if event_name == 'name_ok':
print(values_name['name'])
sg.popup(self.find.find_name(values_name['name']))
window_name.close()
if event == 'find_gender':
layout_gender = [
[sg.T('请输入要查询的学生性别gender'), sg.In('', key='gender')],
[sg.B('确认', key='gender_ok')]
]
window_gender = sg.Window('查询学生性别gender', layout_gender)
while True:
event_gender, values_gender = window_gender.read()
if event_gender is None:
break
if event_gender == 'gender_ok':
print(values_gender['gender'])
sg.popup(self.find.find_gender(str(values_gender['gender'])))
window_gender.close()
if event == 'find_age':
layout_age = [
[sg.T('请输入要查询的学生年龄age'), sg.In('', key='age')],
[sg.B('确认', key='age_ok')]
]
window_age = sg.Window('查询学生年龄age', layout_age)
while True:
event_age, values_age = window_age.read()
if event_age is None:
break
if event_age == 'age_ok':
print(values_age['age'])
sg.popup(self.find.find_age(int(values_age['age'])))
window_age.close()
if event == 'find_major':
layout_major = [
[sg.T('请输入要查询的学生专业major'), sg.In('', key='major')],
[sg.B('确认', key='major_ok')]
]
window_major = sg.Window('查询学生专业major', layout_major)
while True:
event_major, values_major = window_major.read()
if event_major is None:
break
if event_major == 'major_ok':
print(values_major['major'])
sg.popup(self.find.find_major(str(values_major['major'])))
window_major.close()
if event == 'find_classroom':
layout_classroom = [
[sg.T('请输入要查询的学生班级classroom'), sg.In('', key='classroom')],
[sg.B('确认', key='classroom_ok')]
]
window_classroom = sg.Window('查询学生班级classroom', layout_classroom)
while True:
event_classroom, values_classroom = window_classroom.read()
if event_classroom is None:
break
if event_classroom == 'classroom_ok':
sg.popup(self.find.find_classroom(str(values_classroom['classroom'])))
window_classroom.close()
if event == 'find_all':
result = self.find.get_all_students()
sg.Popup(result)
window.close()
# 删除学生
def delete_student_gui(self):
layout = [
[sg.T('请输入要删除的学生的学号'), sg.In('', key='id')],
[sg.B('确认'), sg.B('取消')]
]
window = sg.Window('删除学生', layout)
while True:
event, values = window.read()
if event is None:
break
if event == '确认':
self.editor.delete_student(int(values['id']))
sg.popup_auto_close('删除成功')
if event == '取消':
break
window.close()
# 修改学生信息
def change_student_gui(self):
layout = [
[sg.T('请输入要修改的学生的学号'), sg.In(key='change_id')],
[sg.B('确认'), sg.B('取消')]
]
window = sg.Window('修改学生', layout)
while True:
event, values = window.read()
if event is None:
break
if event == '确认':
self.find.find_id(values['change_id'])
name = self.find.find_id(int(values['change_id']))[0]
gender = self.find.find_id(values['change_id'])[1]
classroom = self.find.find_id(values['change_id'])[2]
age = self.find.find_id(values['change_id'])[3]
major = self.find.find_id(values['change_id'])[4]
layout_change = [
[sg.T('姓名'), sg.In(default_text=name, key='change_name')],
[sg.T('性别'), sg.In(default_text=gender, key='change_gender')],
[sg.T('班级'), sg.In(default_text=classroom, key='change_classroom')],
[sg.T('年龄'), sg.In(default_text=age, key='change_age')],
[sg.T('专业'), sg.In(default_text=major, key='change_major')],
[sg.B('修改', key='change_ok')]
]
window_change = sg.Window(title='修改框', layout=layout_change)
while True:
event_change, values_change = window_change.read()
if event_change is None:
break
if event_change == 'change_ok':
self.editor.update_student(student_id=values['change_id'], name=values_change['change_name'],
gender=values_change['change_gender'],
classroom=values_change['change_classroom'],
age=values_change['change_age'], major=values_change['change_major'])
sg.popup_auto_close('更新成功')
break
window_change.close()
if event == '取消':
break
window.close()
DatabaseConnect文件
import pymysql
import json
class DatabaseConnect(object):
def __init__(self):
# 选择json文件进行存储必需数据
with open(r'E:\Student_Manager_MySQL\database_login.json', 'r') as f:
db_config = json.load(f)
self.host = db_config['host']
self.port = db_config['port']
self.username = db_config['username']
self.password = db_config['password']
self.database = db_config['database']
self.charset = db_config['charset']
def connect_database(self):
try:
db = pymysql.connect(
host=self.host,
port=self.port,
user=self.username,
password=self.password,
database=self.database,
charset=self.charset
)
# print('数据库连接成功')
# 返回db
return db
except pymysql.Error as e:
print('数据库连接失败' + str(e))
LoginDatabase文件
from DatabaseConnect import DatabaseConnect
class LoginDatabase(object):
def __init__(self):
# 创建database_connect()类的对象
self.db_connect = DatabaseConnect()
# 给self.db赋值为db
self.db = self.db_connect.connect_database()
def login_database_connect_gui(self):
# 创建游标对象
cur = self.db.cursor()
# 写sql语句
sqlquery = 'select * from user'
# 执行SQL语句
cur.execute(sqlquery)
# 获取SQL语句的返回值
results = list(cur.fetchall())
# print(results)
result = []
for i in results:
for j in i:
result.append(j)
# print(result)
return result
# print(results)
#
#
# db_connect = database_login()
# db_connect.login_database_connect_gui()
Editor文件
from LoginDatabase import LoginDatabase
class Editor(LoginDatabase):
def __init__(self):
super().__init__()
# 添加学生
def insert_student(self, name, gender, classroom, age, major):
# try:
cur = self.db.cursor()
values = (name, int(age), major, gender, classroom)
sql = "INSERT INTO students (name, age, major, gender, classroom) VALUES (%s, %s, %s, %s, %s)"
cur.execute(sql, values)
self.db.commit()
# xiube = '你回去检查一下你输入的年龄'
# except Exception as e:
# return xiube
# 修改学生
def update_student(self, student_id, name, age, classroom, gender, major):
cur = self.db.cursor()
sql = "UPDATE students SET name = %s, gender = %s, age = %s, major = %s, classroom = %s WHERE id = %s"
values = (name, gender, age, classroom, major, student_id)
cur.execute(sql, values)
self.db.commit()
# 删除学生
def delete_student(self, student_id):
cur = self.db.cursor()
sql = "DELETE FROM students WHERE id = %s"
cur.execute(sql, (student_id,))
self.db.commit()
Find文件
from LoginDatabase import LoginDatabase
# 查询信息
class Find(LoginDatabase):
def __init__(self):
super().__init__()
# 访问所有学生
def get_all_students(self):
cur = self.db.cursor()
cur.execute("SELECT * FROM students")
results = list(cur.fetchall())
print(results)
return results
# 访问id
def find_id(self, student_id):
cur = self.db.cursor()
sql = 'select name,gender,classroom,age,major from students where id=%s ' % student_id
cur.execute(sql)
list_1 = []
result = list(cur.fetchall())
for i in result:
for j in i:
list_1.append(j)
return list_1
# 访问姓名
def find_name(self, name):
cur = self.db.cursor()
sql = 'select * from students where name like %s'
cur.execute(sql, (f'%{name}%',))
result = cur.fetchall()
return result
# 访问性别
def find_gender(self, gender):
cur = self.db.cursor()
sql = 'select * from students where gender=%s'
cur.execute(sql, gender)
result = cur.fetchall()
return result
# 访问班级
def find_classroom(self, classroom):
cur = self.db.cursor()
sql = 'select * from students where classroom like %s'
cur.execute(sql, (f"%{classroom}%",))
result = cur.fetchall()
return result
# 访问年龄
def find_age(self, age):
cur = self.db.cursor()
sql = 'select * from students where age=%d' % age
cur.execute(sql)
result = cur.fetchall()
return result
# 访问专业
def find_major(self, major):
cur = self.db.cursor()
sql = 'select * from students where major=%s'
cur.execute(sql, major)
result = cur.fetchall()
return result
结尾
好了，就到这里了，这一个版本的系统需求基本实现了，缺少一个用户类，然后细分管理员以及普通用户，但是系统功能都实现了，没关系，版本迭代是迟早的，如果有需要可以私信我要源码，如果之后版本迭代的系统我也写出来了，那当然可以给你了。
如有高见，请指教，如若有所收获，还是感激不尽。
灰太狼的大表哥-CSDN博客感谢灰太郎的大表哥给予我的一些关于pymysql的指导。
![Redis学习[4] ——Redis集群](https://i-blog.csdnimg.cn/direct/f0e08bf4951f4a06993948f8634aab4c.png)
