做影视免费网站违法吗,wordpress评论数,wordpress 评论数,WordPress修改图片信息教材管理系统设计与实现 1. 系统概述
教材管理系统是一个基于PHP和SQL的Web应用程序#xff0c;旨在为学校提供一个高效的教材管理平台。该系统可以帮助管理员录入教材信息、教师查询和申请教材、学生查询教材信息#xff0c;提高教材管理的效率和透明度。
2. 技术栈
前端…教材管理系统设计与实现 1. 系统概述
教材管理系统是一个基于PHP和SQL的Web应用程序旨在为学校提供一个高效的教材管理平台。该系统可以帮助管理员录入教材信息、教师查询和申请教材、学生查询教材信息提高教材管理的效率和透明度。
2. 技术栈
前端HTML5, CSS3, JavaScript, jQuery, Bootstrap后端PHP数据库MySQL服务器Apache
3. 系统功能模块 用户管理 用户注册与登录用户信息管理角色权限管理管理员、教师、学生 教材管理 教材信息录入教材信息查询教材信息修改教材信息删除 申请管理 教师申请教材管理员审批申请 库存管理 教材库存查询教材库存更新 系统设置 数据备份与恢复系统日志管理参数配置
4. 数据库设计
4.1 数据库表结构 用户表users id (INT, 主键)username (VARCHAR, 用户名)password (VARCHAR, 密码)role (VARCHAR, 角色)created_at (DATETIME, 创建时间)updated_at (DATETIME, 更新时间) 教材表textbooks id (INT, 主键)title (VARCHAR, 教材名称)author (VARCHAR, 作者)publisher (VARCHAR, 出版社)isbn (VARCHAR, ISBN编号)quantity (INT, 库存数量)created_at (DATETIME, 创建时间)updated_at (DATETIME, 更新时间) 申请表applications id (INT, 主键)user_id (INT, 外键关联用户表)textbook_id (INT, 外键关联教材表)quantity (INT, 申请数量)status (VARCHAR, 申请状态)created_at (DATETIME, 创建时间)updated_at (DATETIME, 更新时间)
5. 系统架构设计
5.1 层次结构 表现层Presentation Layer 负责接收用户的请求并返回处理结果。使用PHP和HTML/CSS/JavaScript实现。 业务逻辑层Business Logic Layer 负责处理具体的业务逻辑。使用PHP实现。 数据访问层Data Access Layer 负责与数据库交互执行增删改查操作。使用PHP的PDO扩展实现。
5.2 控制器Controller
控制器负责处理用户的请求并调用相应的模型方法。示例如下
?php
session_start();// 连接数据库
$host localhost;
$db textbook_management;
$user root;
$pass ;try {$pdo new PDO(mysql:host$host;dbname$db;charsetutf8, $user, $pass);$pdo-setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch (PDOException $e) {die(Could not connect to the database $db : . $e-getMessage());
}// 用户登录
if (isset($_POST[login])) {$username $_POST[username];$password $_POST[password];$stmt $pdo-prepare(SELECT * FROM users WHERE username :username AND password :password);$stmt-execute([username $username, password $password]);$user $stmt-fetch();if ($user) {$_SESSION[user] $user;header(Location: dashboard.php);} else {echo Invalid username or password.;}
}
?5.3 模型Model
模型负责处理数据的存取操作。示例如下
?php
class Textbook {private $pdo;public function __construct($pdo) {$this-pdo $pdo;}public function getAllTextbooks() {$stmt $this-pdo-query(SELECT * FROM textbooks);return $stmt-fetchAll(PDO::FETCH_ASSOC);}public function addTextbook($title, $author, $publisher, $isbn, $quantity) {$stmt $this-pdo-prepare(INSERT INTO textbooks (title, author, publisher, isbn, quantity) VALUES (:title, :author, :publisher, :isbn, :quantity));$stmt-execute([title $title, author $author, publisher $publisher, isbn $isbn, quantity $quantity]);}public function getTextbookById($id) {$stmt $this-pdo-prepare(SELECT * FROM textbooks WHERE id :id);$stmt-execute([id $id]);return $stmt-fetch(PDO::FETCH_ASSOC);}public function updateTextbook($id, $title, $author, $publisher, $isbn, $quantity) {$stmt $this-pdo-prepare(UPDATE textbooks SET title :title, author :author, publisher :publisher, isbn :isbn, quantity :quantity WHERE id :id);$stmt-execute([id $id, title $title, author $author, publisher $publisher, isbn $isbn, quantity $quantity]);}public function deleteTextbook($id) {$stmt $this-pdo-prepare(DELETE FROM textbooks WHERE id :id);$stmt-execute([id $id]);}
}
?5.4 视图View
视图负责显示数据。示例如下
!DOCTYPE html
html langen
headmeta charsetUTF-8meta nameviewport contentwidthdevice-width, initial-scale1.0title教材列表/titlelink relstylesheet hrefhttps://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css
/head
bodydiv classcontainerh1教材列表/h1table classtable table-stripedtheadtrth教材名称/thth作者/thth出版社/ththISBN编号/thth库存数量/thth操作/th/tr/theadtbody?php foreach ($textbooks as $textbook): ?trtd?php echo $textbook[title]; ?/tdtd?php echo $textbook[author]; ?/tdtd?php echo $textbook[publisher]; ?/tdtd?php echo $textbook[isbn]; ?/tdtd?php echo $textbook[quantity]; ?/tdtda hrefedit-textbook.php?id?php echo $textbook[id]; ? classbtn btn-primary编辑/aa hrefdelete-textbook.php?id?php echo $textbook[id]; ? classbtn btn-danger删除/a/td/tr?php endforeach; ?/tbody/tablea hrefadd-textbook.php classbtn btn-success添加教材/a/div
/body
/html6. 功能实现
6.1 用户注册与登录
注册页面register.php
!DOCTYPE html
html langen
headmeta charsetUTF-8meta nameviewport contentwidthdevice-width, initial-scale1.0title注册/titlelink relstylesheet hrefhttps://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css
/head
bodydiv classcontainerh1注册/h1form actionregister.php methodpostdiv classform-grouplabel forusername用户名/labelinput typetext classform-control idusername nameusername required/divdiv classform-grouplabel forpassword密码/labelinput typepassword classform-control idpassword namepassword required/divdiv classform-grouplabel forrole角色/labelselect classform-control idrole namerole requiredoption valueadmin管理员/optionoption valueteacher教师/optionoption valuestudent学生/option/select/divbutton typesubmit nameregister classbtn btn-primary注册/button/form/div
/body
/html注册处理register.php
?php
session_start();// 连接数据库
$host localhost;
$db textbook_management;
$user root;
$pass ;try {$pdo new PDO(mysql:host$host;dbname$db;charsetutf8, $user, $pass);$pdo-setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch (PDOException $e) {die(Could not connect to the database $db : . $e-getMessage());
}if (isset($_POST[register])) {$username $_POST[username];$password $_POST[password];$role $_POST[role];$stmt $pdo-prepare(INSERT INTO users (username, password, role) VALUES (:username, :password, :role));$stmt-execute([username $username, password $password, role $role]);echo 注册成功;
}
?登录页面login.php
!DOCTYPE html
html langen
headmeta charsetUTF-8meta nameviewport contentwidthdevice-width, initial-scale1.0title登录/titlelink relstylesheet hrefhttps://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css
/head
bodydiv classcontainerh1登录/h1form actionlogin.php methodpostdiv classform-grouplabel forusername用户名/labelinput typetext classform-control idusername nameusername required/divdiv classform-grouplabel forpassword密码/labelinput typepassword classform-control idpassword namepassword required/divbutton typesubmit namelogin classbtn btn-primary登录/button/form/div
/body
/html登录处理login.php
?php
session_start();// 连接数据库
$host localhost;
$db textbook_management;
$user root;
$pass ;try {$pdo new PDO(mysql:host$host;dbname$db;charsetutf8, $user, $pass);$pdo-setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch (PDOException $e) {die(Could not connect to the database $db : . $e-getMessage());
}if (isset($_POST[login])) {$username $_POST[username];$password $_POST[password];$stmt $pdo-prepare(SELECT * FROM users WHERE username :username AND password :password);$stmt-execute([username $username, password $password]);$user $stmt-fetch();if ($user) {$_SESSION[user] $user;header(Location: dashboard.php);} else {echo Invalid username or password.;}
}
?6.2 教材管理
添加教材页面add-textbook.php
?php
session_start();if (!isset($_SESSION[user]) || $_SESSION[user][role] ! admin) {header(Location: login.php);exit;
}$pdo new PDO(mysql:hostlocalhost;dbnametextbook_management;charsetutf8, root, );if (isset($_POST[submit])) {$title $_POST[title];$author $_POST[author];$publisher $_POST[publisher];$isbn $_POST[isbn];$quantity $_POST[quantity];$textbook new Textbook($pdo);$textbook-addTextbook($title, $author, $publisher, $isbn, $quantity);header(Location: manage-textbooks.php);
}
?
!DOCTYPE html
html langen
headmeta charsetUTF-8meta nameviewport contentwidthdevice-width, initial-scale1.0title添加教材/titlelink relstylesheet hrefhttps://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css
/head
bodydiv classcontainerh1添加教材/h1form actionadd-textbook.php methodpostdiv classform-grouplabel fortitle教材名称/labelinput typetext classform-control idtitle nametitle required/divdiv classform-grouplabel forauthor作者/labelinput typetext classform-control idauthor nameauthor required/divdiv classform-grouplabel forpublisher出版社/labelinput typetext classform-control idpublisher namepublisher required/divdiv classform-grouplabel forisbnISBN编号/labelinput typetext classform-control idisbn nameisbn required/divdiv classform-grouplabel forquantity库存数量/labelinput typenumber classform-control idquantity namequantity min0 required/divbutton typesubmit namesubmit classbtn btn-primary添加/button/form/div
/body
/html6.3 教材申请管理
教师申请教材页面apply-textbook.php
?php
session_start();if (!isset($_SESSION[user]) || $_SESSION[user][role] ! teacher) {header(Location: login.php);exit;
}$pdo new PDO(mysql:hostlocalhost;dbnametextbook_management;charsetutf8, root, );$textbook new Textbook($pdo);
$textbooks $textbook-getAllTextbooks();if (isset($_POST[submit])) {$user_id $_SESSION[user][id];$textbook_id $_POST[textbook_id];$quantity $_POST[quantity];$stmt $pdo-prepare(INSERT INTO applications (user_id, textbook_id, quantity, status) VALUES (:user_id, :textbook_id, :quantity, pending));$stmt-execute([user_id $user_id, textbook_id $textbook_id, quantity $quantity]);header(Location: my-applications.php);
}
?
!DOCTYPE html
html langen
headmeta charsetUTF-8meta nameviewport contentwidthdevice-width, initial-scale1.0title申请教材/titlelink relstylesheet hrefhttps://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css
/head
bodydiv classcontainerh1申请教材/h1form actionapply-textbook.php methodpostdiv classform-grouplabel fortextbook_id教材/labelselect classform-control idtextbook_id nametextbook_id required?php foreach ($textbooks as $textbook): ?option value?php echo $textbook[id]; ??php echo $textbook[title]; ? (库存: ?php echo $textbook[quantity]; ?)/option?php endforeach; ?/select/divdiv classform-grouplabel forquantity申请数量/labelinput typenumber classform-control idquantity namequantity min1 required/divbutton typesubmit namesubmit classbtn btn-primary申请/button/form/div
/body
/html7. 安全性设计
为了保证系统的安全性需要实现以下功能
用户认证使用PHP会话管理进行用户认证和授权。数据校验在控制器层进行输入参数的校验防止SQL注入等攻击。日志记录记录关键操作的日志便于审计和故障排查。
8. 测试与部署
单元测试使用PHPUnit进行单元测试确保各个模块的功能正确。集成测试进行集成测试确保各个模块之间的协同工作正常。部署将应用程序部署到Apache服务器上确保在生产环境中运行稳定。
9. 源代码
由于篇幅限制无法完整展示所有源代码。以下是部分核心代码示例
9.1 教材申请实体类Application.php
?php
class Application {private $pdo;public function __construct($pdo) {$this-pdo $pdo;}public function getAllApplications() {$stmt $this-pdo-query(SELECT a.*, u.username, t.title FROM applications a JOIN users u ON a.user_id u.id JOIN textbooks t ON a.textbook_id t.id);return $stmt-fetchAll(PDO::FETCH_ASSOC);}public function getApplicationsByUserId($user_id) {$stmt $this-pdo-prepare(SELECT a.*, t.title FROM applications a JOIN textbooks t ON a.textbook_id t.id WHERE a.user_id :user_id);$stmt-execute([user_id $user_id]);return $stmt-fetchAll(PDO::FETCH_ASSOC);}public function approveApplication($id) {$stmt $this-pdo-prepare(UPDATE applications SET status approved WHERE id :id);$stmt-execute([id $id]);}public function rejectApplication($id) {$stmt $this-pdo-prepare(UPDATE applications SET status rejected WHERE id :id);$stmt-execute([id $id]);}
}
?9.2 查看我的申请页面my-applications.php
?php
session_start();if (!isset($_SESSION[user])) {header(Location: login.php);exit;
}$pdo new PDO(mysql:hostlocalhost;dbnametextbook_management;charsetutf8, root, );$application new Application($pdo);
$applications $application-getApplicationsByUserId($_SESSION[user][id]);
?
!DOCTYPE html
html langen
headmeta charsetUTF-8meta nameviewport contentwidthdevice-width, initial-scale1.0title我的申请/titlelink relstylesheet hrefhttps://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css
/head
bodydiv classcontainerh1我的申请/h1table classtable table-stripedtheadtrth教材名称/thth申请数量/thth申请状态/thth操作/th/tr/theadtbody?php foreach ($applications as $application): ?trtd?php echo $application[title]; ?/tdtd?php echo $application[quantity]; ?/tdtd?php echo $application[status]; ?/tdtd?php if ($application[status] pending): ?a hrefcancel-application.php?id?php echo $application[id]; ? classbtn btn-danger取消申请/a?php endif; ?/td/tr?php endforeach; ?/tbody/tablea hrefapply-textbook.php classbtn btn-primary申请教材/a/div
/body
/html
