基于Servlet简易学生信息管理系统

原创已于 2025-02-08 17:26:54 修改 · 569 阅读

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#java #开发语言 #android

于 2025-02-08 17:10:12 首次发布

本次设计的学生信息管理系统，能提供以下功能：

（1）输入入学生信息并保存

（2）显示所有学生信息

（3）查询学生信息

（4）修改学生信息并保存

（5）删除学生信息

系统架构：

后端：Servlet+Spring

前端：JSP

数据库连接池技术：Druid

数据库操作：JdbcTemplate

系统数据结构及其输入规则：

（1）学生信息包括姓名、性别、籍贯、qq、email等；

（2）录入的学生信息要求用mysql保存，并可以对其进行浏览、查询、修改、删除等基本操作；

（3）学生信息的显示要求有一定的规范格式；

（4）对学生信息应能够分别按姓名、籍贯、eamil方式进行查询，要求能返回所有符合条件的学生的信息；

（5）对学生信息的修改应逐个地进行，一个学生信息的更改不应影响其他的学生记录；

登录页面：

登录接口代码：

@WebServlet("/loginServlet")
public class LoginServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //1.设置编码
        request.setCharacterEncoding("utf-8");
        System.out.println("dd");
        //2.获取数据
        //2.1获取用户填写验证码
        String verifycode = request.getParameter("verifycode");

        //3.验证码校验
        HttpSession session = request.getSession();
        String checkcode_server = (String) session.getAttribute("CHECKCODE_SERVER");
        session.removeAttribute("CHECKCODE_SERVER");//确保验证码一次性
        System.out.println("checkcode_server:"+checkcode_server);
        System.out.println("verifycode:"+verifycode);
        if(null == checkcode_server || !checkcode_server.equals(verifycode)){
            //验证码不正确
            //提示信息
            request.setAttribute("login_msg","验证码错误！");
            //跳转登录页面
            request.getRequestDispatcher("/login.jsp").forward(request,response);
            return;
        }
        Map<String, String[]> map = request.getParameterMap();
        //4.封装User对象
        User user = new User();
        try {
            BeanUtils.populate(user,map);
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }
        //5.调用Service查询
        UserService service = new UserServiceImpl();
        User loginStudent = service.login(user);
        //6.判断是否登录成功
        if(loginStudent != null){
            //登录成功
            //将用户存入session
            session.setAttribute("user", loginStudent);
            //跳转页面
            response.sendRedirect(request.getContextPath()+"/findUserByPageServlet");
        }else{
            //登录失败
            //提示信息
            request.setAttribute("login_msg","用户名或密码错误！");
            //跳转登录页面
            request.getRequestDispatcher("/login.jsp").forward(request,response);

        }




    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doPost(request, response);
    }
}

用户注册接口代码：

@WebServlet("/registerUserServlet")
public class RegisterUserServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //1.设置编码
        request.setCharacterEncoding("utf-8");
        //2.获取参数
        Map<String, String[]> map = request.getParameterMap();
        //3.封装对象
        User user = new User();
        try {
            BeanUtils.populate(user,map);
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }

        //4.调用Service保存
        UserService service = new UserServiceImpl();
        service.addUser(user);

        //5.跳转到userListServlet
        response.sendRedirect(request.getContextPath()+"/login.jsp");
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doPost(request, response);
    }
}

学生信息界面：

分页查询接口：


@WebServlet("/findUserByPageServlet")
public class FindUserByPageServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");

        //1.获取参数
        String currentPage = request.getParameter("currentPage");//当前页码
        String rows = request.getParameter("rows");//每页显示条数

        if(currentPage == null || "".equals(currentPage)){

            currentPage = "1";
        }


        if(rows == null || "".equals(rows)){
            rows = "5";
        }
        
        //获取条件查询参数
        Map<String, String[]> condition = request.getParameterMap();


        //2.调用service查询
        StudentService service = new StudentServiceImpl();
        PageBean<Student> pb = service.findUserByPage(currentPage,rows,condition);

        System.out.println(pb);

        //3.将PageBean存入request
        request.setAttribute("pb",pb);
        request.setAttribute("condition",condition);//将查询条件存入request
        //4.转发到list.jsp
        request.getRequestDispatcher("/list.jsp").forward(request,response);
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doPost(request, response);
    }
}

修改学生信息接口：

@WebServlet("/updateUserServlet")
public class UpdateUserServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //1.设置编码
        request.setCharacterEncoding("utf-8");
        //2.获取map
        Map<String, String[]> map = request.getParameterMap();
        //3.封装对象
        Student student = new Student();
        try {
            BeanUtils.populate(student,map);
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }

        //4.调用Service修改
        StudentService service = new StudentServiceImpl();
        service.updateUser(student);

        //5.跳转到查询所有Servlet
        response.sendRedirect(request.getContextPath()+"/findUserByPageServlet");
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doPost(request, response);
    }
}

添加学生信息接口：


@WebServlet("/addUserServlet")
public class AddUserServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //1.设置编码
        request.setCharacterEncoding("utf-8");
        //2.获取参数
        Map<String, String[]> map = request.getParameterMap();
        //3.封装对象
        System.out.println("fjasf");
        Student student = new Student();
        try {
            BeanUtils.populate(student,map);
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }

        //4.调用Service保存
        StudentService service = new StudentServiceImpl();
        service.addUser(student);

        //5.跳转到userListServlet
        response.sendRedirect(request.getContextPath()+"/findUserByPageServlet");
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doPost(request, response);
    }
}

该系统主要是基于Servlet开发的学生信息管理系统，代码架构简单，适合刚学习Servlet的新手学习，可作为课设使用！

源码免费获取：前往《星梦Blog》小程序即可获取