Update README.md

AddAdmin.py

@@ -0,0 +1,93 @@
+"""
+代码功能：添加用户界面设计与功能实现
+"""
+import sys
+
+from PyQt5 import QtCore, QtWidgets
+from PyQt5.QtWidgets import QApplication, QMainWindow, QMessageBox
+
+from ComboCheckBox import QComboCheckBox
+from db import sql_execute
+from sqls import *
+
+
+class AddAdmin(object):
+    # 界面设计
+    def setupUi(self, Form):
+        Form.setObjectName("Form")
+        Form.resize(360, 279)
+        self.label = QtWidgets.QLabel(Form)
+        self.label.setGeometry(QtCore.QRect(40, 40, 54, 12))
+        self.label.setAlignment(QtCore.Qt.AlignRight | QtCore.Qt.AlignTrailing | QtCore.Qt.AlignVCenter)
+        self.label.setObjectName("label")
+        self.textEdit = QtWidgets.QLineEdit(Form)
+        self.textEdit.setGeometry(QtCore.QRect(100, 30, 181, 31))
+        self.textEdit.setObjectName("textEdit")
+        self.label0 = QtWidgets.QLabel(Form)
+        self.label0.setGeometry(QtCore.QRect(40, 90, 54, 12))
+        self.label0.setAlignment(QtCore.Qt.AlignRight | QtCore.Qt.AlignTrailing | QtCore.Qt.AlignVCenter)
+        self.label0.setObjectName("label")
+        self.textEdit0 = QtWidgets.QLineEdit(Form)
+        self.textEdit0.setGeometry(QtCore.QRect(100, 80, 181, 31))
+        self.textEdit0.setObjectName("textEdit")
+        self.textEdit_2 = QtWidgets.QLineEdit(Form)
+        self.textEdit_2.setGeometry(QtCore.QRect(100, 130, 181, 31))
+        self.textEdit_2.setObjectName("textEdit_2")
+        self.label_2 = QtWidgets.QLabel(Form)
+        self.label_2.setGeometry(QtCore.QRect(40, 140, 54, 12))
+        self.label_2.setAlignment(QtCore.Qt.AlignRight | QtCore.Qt.AlignTrailing | QtCore.Qt.AlignVCenter)
+        self.label_2.setObjectName("label_2")
+        classlist = sql_execute(getClassList('0', ''))
+        self.textEdit_3 = QComboCheckBox(Form)
+        for class_ in classlist:
+            self.textEdit_3.add_item('%d.%s' % (class_[0], class_[1]), flag=False)
+        self.textEdit_3.setGeometry(QtCore.QRect(100, 180, 181, 31))
+        self.textEdit_3.setObjectName("textEdit_3")
+        self.label_3 = QtWidgets.QLabel(Form)
+        self.label_3.setGeometry(QtCore.QRect(23, 190, 71, 20))
+        self.label_3.setObjectName("label_3")
+        self.pushButton = QtWidgets.QPushButton(Form)
+        self.pushButton.setGeometry(QtCore.QRect(110, 240, 75, 23))
+        self.pushButton.setObjectName("pushButton")
+        # 提交按钮
+        self.pushButton.clicked.connect(lambda: self.addAdmin(Form))
+
+        self.pushButton_2 = QtWidgets.QPushButton(Form)
+        self.pushButton_2.setGeometry(QtCore.QRect(190, 240, 75, 23))
+        self.pushButton_2.setObjectName("pushButton_2")
+        # 取消按钮
+        self.pushButton_2.clicked.connect(lambda: Form.hide())
+
+        self.retranslateUi(Form)
+        QtCore.QMetaObject.connectSlotsByName(Form)
+
+    def retranslateUi(self, Form):
+        _translate = QtCore.QCoreApplication.translate
+        Form.setWindowTitle(_translate("Form", "新增角色"))
+        self.label.setText(_translate("Form", "用户名："))
+        self.label0.setText(_translate("Form", "密码："))
+        self.label_2.setText(_translate("Form", "备注："))
+        self.label_3.setText(_translate("Form", "可管理班级："))
+        self.pushButton.setText(_translate("Form", "提交"))
+        self.pushButton_2.setText(_translate("Form", "取消"))
+
+    # 功能实现
+    def addAdmin(self, Form):
+        username = self.textEdit.text()
+        password = self.textEdit0.text()
+        mark = self.textEdit_2.text()
+        classids = self.textEdit_3.get_class_text()
+        sql_execute(insertAdmin(username, password, mark, classids))
+        QMessageBox.about(Form, '成功', "添加成功！请刷新列表数据。")
+        Form.hide()
+
+
+# 测试
+if __name__ == "__main__":
+    App = QApplication(sys.argv)  # 创建QApplication对象，作为GUI主程序入口
+    aw = AddAdmin()  # 创建主窗体对象，实例化Ui_MainWindow
+    w = QMainWindow()  # 实例化QMainWindow类
+    aw.setupUi(w)  # 主窗体对象调用setupUi方法，对QMainWindow对象进行设置
+    w.show()  # 显示主窗体
+    w.setWindowTitle('Python学生管理系统-新增用户')
+    sys.exit(App.exec_())  # 循环中等待退出程序

ComboCheckBox.py

@@ -0,0 +1,125 @@
+
+from PyQt5.QtWidgets import QWidget, QComboBox, QLineEdit, QListView
+from PyQt5.QtGui import QStandardItemModel, QStandardItem, QMouseEvent
+from PyQt5.Qt import Qt
+
+global classIds
+classIds = ''
+
+
+# 全选与单选的绑定（没有这个会导致勾选数据错乱）
+def show_text(function):
+    def wrapped(self, *args, **kwargs):
+        global classIds
+        if self.vars["showTextLock"]:
+            self.vars["showTextLock"] = False
+            result = function(self, *args, **kwargs)
+            items = self.get_selected()
+            l = len(items)
+            l_ = self.vars["listViewModel"].rowCount() - 1
+            self.vars["listViewModel"].item(0).setCheckState(
+                Qt.Checked if l == l_ else Qt.Unchecked if l == 0 else Qt.PartiallyChecked)
+            self.vars["lineEdit"].setText(
+                "(全选)" if l == l_ else "(无选择)" if l == 0 else ";".join((item.text() for item in items)))
+            self.vars["showTextLock"] = True
+
+            classIds = "" if l == 0 else ",".join((item.text().split('.')[0] for item in items))
+        else:
+            result = function(self, *args, **kwargs)
+        return result
+
+    return wrapped
+
+
+# 选项的渲染和选择后的显示
+class QComboCheckBox(QComboBox):
+    class MyListView(QListView):
+        def __init__(self, parent: QWidget = None, vars=None):
+            super().__init__(parent)
+            self.vars = vars
+
+        def mousePressEvent(self, event: QMouseEvent):
+            self.vars["lock"] = False
+            super().mousePressEvent(event)
+
+        def mouseDoubleClickEvent(self, event: QMouseEvent):
+            self.vars["lock"] = False
+            super().mouseDoubleClickEvent(event)
+
+    def __init__(self, parent: QWidget = None):
+        super().__init__(parent)
+        self.vars = dict()
+        self.vars["lock"] = True
+        self.vars["showTextLock"] = True
+        # 装饰器锁，避免批量操作时重复改变lineEdit的显示
+        self.vars["lineEdit"] = QLineEdit(self)
+        self.vars["lineEdit"].setReadOnly(True)
+        self.vars["listView"] = self.MyListView(self, self.vars)
+        self.vars["listViewModel"] = QStandardItemModel(self)
+        self.setModel(self.vars["listViewModel"])
+        self.setView(self.vars["listView"])
+        self.setLineEdit(self.vars["lineEdit"])
+
+        self.activated.connect(self.__show_selected)
+
+        self.add_item("(全选)")
+
+    @show_text
+    def add_item(self, text: "str", flag=False):
+        # 根据文本添加子项
+        item = QStandardItem()
+        item.setText(text)
+        item.setCheckable(True)
+        if flag:
+            item.setCheckState(Qt.Checked)
+        self.vars["listViewModel"].appendRow(item)
+
+    # 根据文本查找子项
+    def find_text(self, text: "str"):
+        tempList = self.vars["listViewModel"].findItems(text)
+        tempList.pop(0) if tempList and tempList[0].row() == 0 else tempList
+        return tempList
+
+    # 获取班级ids
+    def get_class_text(self):
+        return classIds
+
+    @show_text  # 全选
+    def select_all(self):
+        for row in range(0, self.vars["listViewModel"].rowCount()):
+            self.vars["listViewModel"].item(row).setCheckState(Qt.Checked)
+
+    @show_text  # 全不选
+    def select_clear(self):
+        for row in range(0, self.vars["listViewModel"].rowCount()):
+            self.vars["listViewModel"].item(row).setCheckState(Qt.Unchecked)
+
+    # 获取当前选择的子项
+    def get_selected(self):
+        items = list()
+        for row in range(1, self.vars["listViewModel"].rowCount()):
+            item = self.vars["listViewModel"].item(row)
+            if item.checkState() == Qt.Checked:
+                items.append(item)
+        return items
+
+    @show_text  # 显示选中的选项
+    def __show_selected(self, index):
+        # 未被选中
+        if not self.vars["lock"]:
+            # 选中全选
+            if index == 0:
+                if self.vars["listViewModel"].item(0).checkState() == Qt.Checked:
+                    self.select_clear()
+                else:
+                    self.select_all()
+            # 选中其他
+            else:
+                self.__select_reverse(index)
+
+            self.vars["lock"] = True
+
+    # 选中一个选项
+    def __select_reverse(self, row: "int"):
+        item = self.vars["listViewModel"].item(row)
+        item.setCheckState(Qt.Unchecked if item.checkState() == Qt.Checked else Qt.Checked)

Config.py

@@ -0,0 +1,24 @@
+"""
+项目名称：python pyqt5 mysql 学生管理系统
+作者：bhml
+时间：2022/11/28
+代码功能：存放系统中需要多次使用的全局变量
+"""
+
+USER = (1, 'admin', '0', '0', '0')
+
+# 管理模块标识
+FLAG_STUDENT = 1  # 学生管理
+FLAG_CLASS = 2  # 班级管理
+FLAG_ADMIN = 3  # 角色管理
+FLAG_GRADE = 4  # 成绩管理
+FLAG_INFO = 5  # 修改资料
+
+# 登录窗口
+LOGIN_WINDOW = None
+
+# 数据库配置
+DB_HOST = 'localhost'
+DB_USER = 'root'
+DB_PASSWORD = '123456'
+DB_NAME = 'db_studentms'

EditAdmin.py

@@ -0,0 +1,122 @@
+"""
+
+代码功能：修改用户界面设计与功能实现
+"""
+from PyQt5 import QtCore, QtWidgets
+from PyQt5.QtWidgets import QApplication, QMainWindow, QMessageBox, QInputDialog, QLineEdit
+
+from ComboCheckBox import QComboCheckBox
+from db import sql_execute
+from sqls import *
+
+
+class EditAdmin(object):
+    # 界面设计
+    def setupUi(self, Form, adminId):
+        Form.setObjectName("Form")
+        Form.resize(360, 279)
+        self.label = QtWidgets.QLabel(Form)
+        self.label.setGeometry(QtCore.QRect(40, 40, 54, 12))
+        self.label.setAlignment(QtCore.Qt.AlignRight | QtCore.Qt.AlignTrailing | QtCore.Qt.AlignVCenter)
+        self.label.setObjectName("label")
+        admin = sql_execute(getAdminById(adminId))[0]
+        self.textEdit = QtWidgets.QLineEdit(Form)
+        self.textEdit.setGeometry(QtCore.QRect(100, 30, 181, 31))
+        self.textEdit.setText(admin[1])
+        self.textEdit.setObjectName("textEdit")
+        self.textEdit_2 = QtWidgets.QLineEdit(Form)
+        self.textEdit_2.setGeometry(QtCore.QRect(100, 80, 181, 31))
+        self.textEdit_2.setText(admin[3])
+        self.textEdit_2.setObjectName("textEdit_2")
+        self.label_2 = QtWidgets.QLabel(Form)
+        self.label_2.setGeometry(QtCore.QRect(40, 90, 54, 12))
+        self.label_2.setAlignment(QtCore.Qt.AlignRight | QtCore.Qt.AlignTrailing | QtCore.Qt.AlignVCenter)
+        self.label_2.setObjectName("label_2")
+        self.textEdit_3 = QComboCheckBox(Form)
+
+        class_dict = []
+        try:
+            # 不为超级管理员
+            if admin[4] != '0':
+                data4 = admin[4].split(',')
+                for d in data4:
+                    class_dict.append(d)
+        except Exception as e:
+            pass
+
+        # 获取班级列表（供老师选择来管理）
+        classlist = sql_execute(getClassList('0', ''))
+        for class_ in classlist:
+            self.textEdit_3.add_item('%d.%s' % (class_[0], class_[1]),
+                                     flag=admin[4] == '0' or str(class_[0]) in class_dict)
+        self.textEdit_3.setGeometry(QtCore.QRect(100, 130, 181, 31))
+        self.textEdit_3.setObjectName("textEdit_3")
+        self.label_3 = QtWidgets.QLabel(Form)
+        self.label_3.setGeometry(QtCore.QRect(23, 140, 71, 20))
+        self.label_3.setObjectName("label_3")
+        self.pushButton = QtWidgets.QPushButton(Form)
+        self.pushButton.setGeometry(QtCore.QRect(150, 220, 75, 23))
+        self.pushButton.setObjectName("pushButton")
+
+        # 提交按钮
+        self.pushButton.clicked.connect(lambda: self.updateAdmin(adminId, Form))
+
+        self.pushButton_2 = QtWidgets.QPushButton(Form)
+        self.pushButton_2.setGeometry(QtCore.QRect(230, 220, 75, 23))
+        self.pushButton_2.setObjectName("pushButton_2")
+
+        # 取消按钮
+        self.pushButton_2.clicked.connect(lambda: Form.hide())
+
+        self.pushButton_3 = QtWidgets.QPushButton(Form)
+        self.pushButton_3.setGeometry(QtCore.QRect(10, 220, 75, 23))
+        self.pushButton_3.setObjectName("pushButton_3")
+
+        # 重置密码按钮
+        self.pushButton_3.clicked.connect(lambda: self.resetPassw(adminId, Form))
+
+        self.retranslateUi(Form)
+        QtCore.QMetaObject.connectSlotsByName(Form)
+
+    # 重新翻译（针对性修改）
+    def retranslateUi(self, Form):
+        _translate = QtCore.QCoreApplication.translate
+        Form.setWindowTitle(_translate("Form", "编辑角色"))
+        self.label.setText(_translate("Form", "用户名："))
+        self.label_2.setText(_translate("Form", "备注："))
+        self.label_3.setText(_translate("Form", "可管理班级："))
+        self.pushButton.setText(_translate("Form", "提交"))
+        self.pushButton_2.setText(_translate("Form", "取消"))
+        self.pushButton_3.setText(_translate("Form", "重置密码"))
+
+    # 功能实现（修改用户名）
+    def updateAdmin(self, adminId, Form):
+        username = self.textEdit.text()
+        mark = self.textEdit_2.text()
+        classids = self.textEdit_3.get_class_text()
+        sql_execute(updateAdminById(adminId, username, mark, classids))
+        QMessageBox.about(Form, '成功', "编辑成功！请刷新列表数据。")
+        Form.hide()
+
+    # 功能实现（重置密码）
+    def resetPassw(self, adminId, Form):
+        text, okPressed = QInputDialog.getText(Form, "重置密码", "新密码:", QLineEdit.Normal, '')
+        if okPressed:
+            try:
+                sql_execute(resetAdminPasswById(adminId, text))
+                QMessageBox.about(Form, '成功', '重置密码成功！')
+            except Exception as e:
+                QMessageBox.critical(Form, '失败', '重置密码失败：\n')
+            Form.hide()
+
+
+# 测试
+if __name__ == "__main__":
+    import sys
+    App = QApplication(sys.argv)  # 创建QApplication对象，作为GUI主程序入口
+    aw = EditAdmin()  # 创建主窗体对象，实例化Ui_MainWindow
+    w = QMainWindow()  # 实例化QMainWindow类
+    aw.setupUi(w, 1)  # 主窗体对象调用setupUi方法，对QMainWindow对象进行设置
+    w.show()  # 显示主窗体
+    w.setWindowTitle('Python学生管理系统-修改用户')
+    sys.exit(App.exec_())  # 循环中等待退出程序

README.md

@@ -1,2 +1,24 @@
-# sparkalights
+该学生信息管理系统的功能是收集学生的个人信息，以便向老师提供每个学生在校或毕业生学籍的情况，还可以让学生用自己的学号，密码去登录查看自己的在校期表现。学生信息管理系统的主要功能有：
+
+1.管理员登录、修改信息 
+2.学生管理：对学生信息增 删 改 查（支持批量导入导出）
+3.成绩管理：成绩录入（支持批量导入导出）、查询/修改、统计
+4.班级管理：对班级信息增删改查（支持批量导入导出）
+5.管理员管理（超管）不同院系的各学生成绩的录入管理
+
+学生信息管理系统主要是提供学生管理：包括编辑（姓名，性别，生日，年龄，入学日期，所在院系班级等）用户登录（两种权限，一种是管理员可以做任何想要的操作，一种是学生只可以查看自己的信息，不能编辑，也不能查看其他用户信息）。
+
+本项目是基于python+PyQt5+MySQL开发的
+项目结构：
+	- data 存放导入导出的数据的文件夹
+	- image 存放背景图片的文件夹
+	- AddAdmin.py 添加用户的界面的设计代码
+	- ComboCheckBox.py 添加或者修改用户信息的时候的选择框工具代码
+	- Config.py 配置文件存放项目常量参数
+	- db.py 数据库链接代码
+	- EditAdmin.py 修改用户的界面的设计代码
+	- login.py 项目的入口（登录界面和功能的实现）
+	- mian.py 程序主界面设计与功能实现代码
+	- sqls.py 存放操作数据库的sql语句代码
+
 

db.py

@@ -0,0 +1,45 @@
+"""
+
+代码功能：数据库链接与交互
+"""
+
+import pymysql
+import hashlib
+import Config as C
+
+global conn
+conn = None
+
+
+# 01获取数据库连接
+def conn_mysql():
+    conn = None
+    try:
+        conn = pymysql.connect(host=C.DB_HOST, port=3306, user=C.DB_USER, password=C.DB_PASSWORD, db=C.DB_NAME,
+                               charset='utf8')
+    except Exception as e:
+        print(e)
+    return conn
+
+
+# 02根据SQL语句操作数据库
+def sql_execute(sql):
+    global conn
+    if conn is None:
+        conn = conn_mysql()
+    cur = conn.cursor()
+    cur.execute(sql)
+    result = cur.fetchall()
+    cur.close()
+    return result
+
+
+# 03获取MD5加密结果
+def md5(text):
+    text = bytes(text, encoding='utf-8')
+    return hashlib.md5(text).hexdigest()
+
+
+if __name__ == "__main__":
+    str_md5 = md5("123456")
+    print('MD5加密后为 ：' + str_md5)

db_studentms.sql

@@ -0,0 +1,81 @@
+/*
+ Navicat MySQL Data Transfer
+
+ Source Server         : mysql57
+ Source Server Type    : MySQL
+ Source Server Version : 50709
+ Source Host           : localhost:3306
+ Source Schema         : db_studentms
+
+ Target Server Type    : MySQL
+ Target Server Version : 50709
+ File Encoding         : 65001
+
+ Date: 03/02/2023 00:46:44
+*/
+
+SET NAMES utf8mb4;
+SET FOREIGN_KEY_CHECKS = 0;
+
+-- ----------------------------
+-- Table structure for admin
+-- ----------------------------
+DROP TABLE IF EXISTS `admin`;
+CREATE TABLE `admin`  (
+  `a_id` int(11) NOT NULL AUTO_INCREMENT COMMENT '1.超级管理员 其他.班级管理员',
+  `a_username` varchar(10) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT '' COMMENT '用户名',
+  `a_password` varchar(32) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT '' COMMENT '密码 长度6-18 (MD5加密)',
+  `a_mark` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT '' COMMENT '备注',
+  `a_classid` varchar(30) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '可管理班级（id）多个班级id可用,隔开',
+  PRIMARY KEY (`a_id`) USING BTREE
+) ENGINE = MyISAM AUTO_INCREMENT = 17 CHARACTER SET = utf8 COLLATE = utf8_general_ci COMMENT = '管理员表' ROW_FORMAT = Dynamic;
+
+-- ----------------------------
+-- Records of admin
+-- ----------------------------
+INSERT INTO `admin` VALUES (1, 'admin', 'e10adc3949ba59abbe56e057f20f883e', '超级管理员', '0');
+INSERT INTO `admin` VALUES (2, 'bhml', 'e10adc3949ba59abbe56e057f20f883e', '兵慌码乱', '1');
+INSERT INTO `admin` VALUES (3, 'lyt', 'e10adc3949ba59abbe56e057f20f883e', '李有田', '2');
+INSERT INTO `admin` VALUES (4, 'james', 'e10adc3949ba59abbe56e057f20f883e', '詹姆斯', '1,2');
+
+-- ----------------------------
+-- Table structure for class_
+-- ----------------------------
+DROP TABLE IF EXISTS `class_`;
+CREATE TABLE `class_`  (
+  `c_id` int(11) NOT NULL AUTO_INCREMENT,
+  `c_name` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT '' COMMENT '班级名称',
+  PRIMARY KEY (`c_id`) USING BTREE
+) ENGINE = MyISAM AUTO_INCREMENT = 16 CHARACTER SET = utf8 COLLATE = utf8_general_ci COMMENT = '班级表' ROW_FORMAT = Dynamic;
+
+-- ----------------------------
+-- Records of class_
+-- ----------------------------
+INSERT INTO `class_` VALUES (1, '软件工程1班');
+INSERT INTO `class_` VALUES (2, '网络工程1班');
+
+-- ----------------------------
+-- Table structure for student
+-- ----------------------------
+DROP TABLE IF EXISTS `student`;
+CREATE TABLE `student`  (
+  `s_id` int(11) NOT NULL AUTO_INCREMENT,
+  `s_realname` varchar(5) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT '' COMMENT '姓名',
+  `s_number` int(11) NULL DEFAULT NULL COMMENT '学号',
+  `s_sex` int(11) NOT NULL DEFAULT 0 COMMENT '性别	1.男，2.女',
+  `s_class` int(11) NOT NULL DEFAULT 0 COMMENT '所属班级id',
+  `s_chinese` int(11) NOT NULL DEFAULT 0 COMMENT '语文成绩',
+  `s_math` int(11) NOT NULL DEFAULT 0 COMMENT '数学成绩',
+  `s_english` int(11) NOT NULL DEFAULT 0 COMMENT '外语成绩',
+  PRIMARY KEY (`s_id`) USING BTREE
+) ENGINE = MyISAM AUTO_INCREMENT = 529 CHARACTER SET = utf8 COLLATE = utf8_general_ci COMMENT = '学生信息表' ROW_FORMAT = Dynamic;
+
+-- ----------------------------
+-- Records of student
+-- ----------------------------
+INSERT INTO `student` VALUES (4, 'kobe', 1004, 1, 2, 0, 0, 0);
+INSERT INTO `student` VALUES (3, '高启兰', 1003, 2, 1, 0, 0, 0);
+INSERT INTO `student` VALUES (2, '安欣', 1002, 1, 2, 0, 0, 0);
+INSERT INTO `student` VALUES (1, '高启强', 1001, 1, 1, 99, 99, 60);
+
+SET FOREIGN_KEY_CHECKS = 1;

login.py

@@ -0,0 +1,155 @@
+"""
+
+代码功能：一、登录界面与功能实现
+"""
+import sys
+
+from PyQt5 import QtCore, QtGui, QtWidgets
+from PyQt5.QtWidgets import QApplication, QMainWindow
+
+from main import MainUi
+from sqls import *
+
+from db import *
+import Config as C
+
+
+# 界面与登录功能的设计与实现
+class Ui_MainWindow(object):
+    def setupUi(self, MainWindow):
+        MainWindow.setObjectName("MainWindow")
+        MainWindow.resize(400, 400)
+        self.centralwidget = QtWidgets.QWidget(MainWindow)
+        self.centralwidget.setObjectName("centralwidget")
+        self.label = QtWidgets.QLabel(self.centralwidget)
+        self.label.setGeometry(QtCore.QRect(30, 30, 350, 60))
+        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Preferred, QtWidgets.QSizePolicy.Preferred)
+        sizePolicy.setHorizontalStretch(0)
+        sizePolicy.setVerticalStretch(0)
+        sizePolicy.setHeightForWidth(self.label.sizePolicy().hasHeightForWidth())
+        self.label.setSizePolicy(sizePolicy)
+        self.label.setMinimumSize(QtCore.QSize(50, 50))
+        self.label.setBaseSize(QtCore.QSize(50, 50))
+        font = QtGui.QFont()
+        font.setFamily("楷体")
+        font.setPointSize(27)
+        font.setBold(True)
+        font.setItalic(False)
+        font.setWeight(75)
+        self.label.setFont(font)
+        self.label.setLayoutDirection(QtCore.Qt.LeftToRight)
+        self.label.setAutoFillBackground(False)
+        self.label.setMidLineWidth(0)
+        self.label.setAlignment(QtCore.Qt.AlignCenter)
+        self.label.setWordWrap(False)
+        self.label.setIndent(0)
+        self.label.setObjectName("label")
+        self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
+        self.lineEdit.setGeometry(QtCore.QRect(140, 140, 181, 31))
+        font = QtGui.QFont("Microsoft YaHei")
+        font.setPointSize(11)
+        self.lineEdit.setFont(font)
+        self.lineEdit.setInputMask("")
+        self.lineEdit.setText("")
+        self.lineEdit.setObjectName("lineEdit")
+        self.label_2 = QtWidgets.QLabel(self.centralwidget)
+        self.label_2.setGeometry(QtCore.QRect(40, 140, 91, 31))
+        font = QtGui.QFont("Microsoft YaHei")
+        font.setPointSize(11)
+        self.label_2.setFont(font)
+        self.label_2.setAlignment(QtCore.Qt.AlignRight | QtCore.Qt.AlignTrailing | QtCore.Qt.AlignVCenter)
+        self.label_2.setObjectName("label_2")
+        self.label_3 = QtWidgets.QLabel(self.centralwidget)
+        self.label_3.setGeometry(QtCore.QRect(40, 190, 91, 31))
+        font = QtGui.QFont("Microsoft YaHei")
+        font.setPointSize(11)
+        self.label_3.setFont(font)
+        self.label_3.setAlignment(QtCore.Qt.AlignRight | QtCore.Qt.AlignTrailing | QtCore.Qt.AlignVCenter)
+        self.label_3.setObjectName("label_3")
+        self.lineEdit_2 = QtWidgets.QLineEdit(self.centralwidget)
+        self.lineEdit_2.setGeometry(QtCore.QRect(140, 190, 181, 31))
+        font = QtGui.QFont("Microsoft YaHei")
+        font.setPointSize(11)
+        self.lineEdit_2.setFont(font)
+        self.lineEdit_2.setInputMask("")
+        self.lineEdit_2.setText("")
+        self.lineEdit_2.setEchoMode(QtWidgets.QLineEdit.Password)
+        self.lineEdit_2.setObjectName("lineEdit_2")
+        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
+        self.pushButton.setGeometry(QtCore.QRect(120, 280, 160, 40))
+        font = QtGui.QFont("Microsoft YaHei")
+        font.setPointSize(16)
+        self.pushButton.setFont(font)
+        self.pushButton.setObjectName("pushButton")
+
+        font = QtGui.QFont("Microsoft YaHei")
+        font.setItalic(False)
+        font.setPointSize(14)
+        self.label_6 = QtWidgets.QLabel(self.centralwidget)
+        self.label_6.setGeometry(QtCore.QRect(80, 240, 250, 20))
+        self.label_6.setObjectName("label_6")
+        self.label_6.setFont(font)
+
+        MainWindow.setCentralWidget(self.centralwidget)
+        self.menubar = QtWidgets.QMenuBar(MainWindow)
+        self.menubar.setGeometry(QtCore.QRect(0, 0, 640, 23))
+        self.menubar.setObjectName("menubar")
+        MainWindow.setMenuBar(self.menubar)
+        self.statusbar = QtWidgets.QStatusBar(MainWindow)
+        self.statusbar.setObjectName("statusbar")
+        MainWindow.setStatusBar(self.statusbar)
+
+        self.retranslateUi(MainWindow)
+        QtCore.QMetaObject.connectSlotsByName(MainWindow)
+
+        self.centralwidget.setStyleSheet('''
+                    QLabel#label_6{
+                        color:red;
+                    }
+                    #pushButton{background-color:#2c7adf;color:#fff;border:none;border-radius:4px;}
+                    #pushButton:hover{background-color:#2c8adf;}
+                ''')
+        self.pushButton.clicked.connect(lambda: self.btn_clicked(MainWindow))
+
+    def retranslateUi(self, MainWindow):
+        _translate = QtCore.QCoreApplication.translate
+        MainWindow.setWindowTitle(_translate("MainWindow", "Python学生管理系统-管理员登录"))
+        self.label.setText(_translate("MainWindow", "Python学生管理系统"))
+        self.lineEdit.setPlaceholderText(_translate("MainWindow", "请输入用户名"))
+        self.label_2.setText(_translate("MainWindow", "用户名："))
+        self.label_3.setText(_translate("MainWindow", "密码："))
+        self.lineEdit_2.setPlaceholderText(_translate("MainWindow", "请输入密码"))
+        self.pushButton.setText(_translate("MainWindow", "登录"))
+
+    # 管理员登录
+    def btn_clicked(self, MainWindow):
+        self.label_6.setText("正在登录...")
+        self.pushButton.setDisabled(True)
+        QApplication.processEvents()
+        username = self.lineEdit.text()
+        password = self.lineEdit_2.text()
+        result = sql_execute(login(username, password))
+        if len(result) == 0:
+            self.label_6.setText("登录失败：用户名或密码错误")
+            self.pushButton.setDisabled(False)
+            print(username + "登录失败！")
+        else:
+            print(username + "登录成功！")
+            self.label_6.setText("登录成功！")
+            print(result[0])
+            C.USER = result[0]
+            self.main = MainUi()
+            self.main.show()
+            C.LOGIN_WINDOW = aw
+            MainWindow.hide()
+            self.main.setWindowTitle('Python学生管理系统')
+
+
+if __name__ == "__main__":
+    App = QApplication(sys.argv)  # 创建QApplication对象，作为GUI主程序入口
+    aw = Ui_MainWindow()  # 创建主窗体对象，实例化Ui_MainWindow
+    w = QMainWindow()  # 实例化QMainWindow类
+    aw.setupUi(w)  # 主窗体对象调用setupUi方法，对QMainWindow对象进行设置
+    w.show()  # 显示主窗体
+    w.setWindowTitle('Python学生管理系统-管理员登录')
+    sys.exit(App.exec_())  # 循环中等待退出程序

sqls.py

@@ -0,0 +1,191 @@
+"""
+
+代码功能：集中存放项目中用到的SQL语句
+"""
+from db import md5
+
+
+# 01登录
+def login(username, password):
+    password = md5(password)
+    return "select * from admin where a_username='%s' and a_password='%s'" % (username, password)
+
+
+# 02根据id查询班级列表
+def getClassList(idStr, name=""):
+    """
+    :param idStr: id，多个用','分隔。0表示获取所有数据
+    :return:
+    """
+    sql = "select * from class_ where c_name like '%" + name + "%'"
+    if idStr == "0":
+        pass
+    else:
+        sql += " and c_id in (" + idStr + ")"
+    return sql
+
+
+# 03获取学生信息
+def getStudentById(id):
+    """
+    :param id: s_id 学生id
+    :return:
+    """
+    sql = "select * from student where s_id=" + str(id)
+    return sql
+
+
+# 04查询一个班的学生信息
+def getStudentByClassId(id):
+    """
+    :param id: 班级id
+    :return:
+    """
+    sql = "select * from student where s_class=" + str(id)
+    return sql
+
+
+# 05查询学生信息（通过班级，姓名）
+def getStudentList(classids, name):
+    """
+    :param classids: 学生所在班级id，多个用逗号间隔。0表示获取所有数据
+    :return:
+    """
+    sql = "select * from student where s_realname like '%" + name + "%'"
+    if classids == "0":
+        pass
+    else:
+        sql += " and s_class in (" + classids + ")"
+    sql += " order by s_number"
+    return sql
+
+
+# 06获取学生成绩列表（通过总分排序）
+def getGradeList(classids, name):
+    """
+    :param classids: 学生所在班级id，多个用逗号间隔。0表示获取所有数据
+    :return:
+    """
+    sql = "select * from student where s_realname like '%" + name + "%'"
+    if classids == "0":
+        pass
+    else:
+        sql += " and s_class in (" + classids + ")"
+    sql += " order by s_chinese + s_math + s_english DESC"
+    return sql
+
+
+# 07获取管理员列表
+def getAdminList(name):
+    """
+    :param name: 用户名
+    :return:
+    """
+    sql = "select * from admin where a_username like '%" + name + "%'"
+    sql += " order by a_id"
+    return sql
+
+
+# 08获取管理员信息
+def getAdminById(id):
+    """
+    :param id: 管理员id
+    :return:
+    """
+    sql = "select * from admin where a_id=" + str(id)
+    return sql
+
+
+# 09通过学生id删除学生信息
+def delStudentById(id):
+    sql = "delete from student where s_id=" + str(id)
+    return sql
+
+
+# 10通过班级id删除班级信息
+def delClassById(id):
+    sql = "delete from class_ where c_id = " + str(id)
+    return sql
+
+
+# 11通过id删除用户信息
+def delAdminById(id):
+    sql = "delete from admin where a_id = " + str(id)
+    return sql
+
+
+# 12通过id删除批量学生信息
+def delStudentByIds(ids):
+    sql = "delete from student where s_id in " + ids
+    return sql
+
+
+# 13更新学生信息
+def updateStudentById(id, name, number, sex, class_):
+    sql = "update student set s_realname='%s',s_number=%s,s_sex=%s,s_class=%s where s_id=" % (
+        name, number, sex, class_) + str(id)
+    return sql
+
+
+# 14更新学生成绩信息（通过id）
+def updateGradeById(id, chinese, math, english):
+    sql = "update student set s_chinese=%s,s_math=%s,s_english=%s where s_id=" % (chinese, math, english) + str(id)
+    return sql
+
+
+# 15更新学生成绩信息（通过学号）
+def updateGradeByNum(num, chinese, math, english):
+    sql = "update student set s_chinese=%s,s_math=%s,s_english=%s where s_number=" % (chinese, math, english) + str(num)
+    return sql
+
+
+# 16更新班级信息（通过id）
+def updateClassById(id, name):
+    sql = "update class_ set c_name='%s' where c_id=" % name + str(id)
+    return sql
+
+
+# 17更新用户信息（通过id）
+def updateAdminById(id, username, mark, classids):
+    sql = "update admin set a_username='%s',a_mark='%s',a_classid='%s' where a_id=" \
+          % (username, mark, classids) + str(id)
+    return sql
+
+
+# 18更新用户名（通过id）
+def updateUsernameById(id, username):
+    sql = "update admin set a_username='%s' where a_id=" % username + str(id)
+    return sql
+
+
+# 19重置用户密码（通过id）
+def resetAdminPasswById(id, password):
+    password = md5(password)
+    sql = "update admin set a_password='%s' where a_id=" % password + str(id)
+    return sql
+
+
+# 20添加学生信息
+def insertStudent(name, number, sex, class_):
+    sql = "insert into student (s_realname,s_number,s_sex,s_class) VALUES ('%s',%s,%s,%s)" % (
+        name, str(number), sex, str(class_))
+    return sql
+
+
+# 21添加班级信息
+def insertClass(name):
+    sql = "insert into class_ (c_name) VALUES ('%s')" % name
+    return sql
+
+
+# 22添加用户信息
+def insertAdmin(username, password, mark, classids):
+    password = md5(password)
+    sql = "insert into admin (a_username,a_password,a_mark,a_classid) VALUES " \
+          "('%s','%s','%s','%s')" % (username, password, mark, classids)
+    return sql
+
+
+# 测试
+if __name__ == "__main__":
+    print(getClassList("1,2,3"))