考勤打卡系统

登录界面 分为职员，管理员、部门经理
`<%--
Created by IntelliJ IDEA.
User: 32262
Date: 2024/12/16
Time: 14:08
To change this template use File | Settings | File Templates.
--%>

<%@ page contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>

账户：
密码：

<input type="submit" value="登录" class="myButton"><span id="tip">${tip}</span>

package org.example.kaoqin;

import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

@WebServlet("/userLogin")
public class Userloginservlet extends HttpServlet {
@Override
protected void service(HttpServletRequest req, HttpServletResponse resp)
throws javax.servlet.ServletException, IOException {
String name = req.getParameter("name");
String password = req.getParameter("password");

    // 获取 HttpSession 对象HttpSession session = req.getSession();try (Connection connection = Database.getConnection();PreparedStatement statement = connection.prepareStatement("SELECT role FROM zhiyuan WHERE name = ? AND password = ?")) {statement.setString(1, name);statement.setString(2, password);ResultSet resultSet = statement.executeQuery();if (resultSet.next()) {// 获取用户身份String role = resultSet.getString("role");// 将用户名和身份存储在 session 中session.setAttribute("name", name);session.setAttribute("role", role);// 根据身份转发到相应的页面if ("zhiyuan".equals(role)) {req.getRequestDispatcher("zhiyuan.jsp").forward(req, resp);} else if ("bumenjingli".equals(role)) {req.getRequestDispatcher("bumenjingli.jsp").forward(req, resp);} else if ("guanliyuan".equals(role)) {req.getRequestDispatcher("guanliyuan.jsp").forward(req, resp);} else {req.setAttribute("tip", "未知用户类型");req.getRequestDispatcher("index.jsp").forward(req, resp);}} else {req.setAttribute("tip", "用户名或密码错误");req.getRequestDispatcher("index.jsp").forward(req, resp);}} catch (SQLException | ClassNotFoundException e) {// 记录日志e.printStackTrace();throw new RuntimeException("数据库操作失败", e);}
}

}
密码重置<%@ page import="java.sql.ResultSet" %>
<%@ page import="java.sql.Connection" %>
<%@ page import="java.sql.Statement" %>
<%@ page import="org.example.kaoqin.Database" %>
<%--
Created by IntelliJ IDEA.
User: 32262
Date: 2024/12/9
Time: 19:45
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>

工号

    <%String jobid = request.getParameter("jobid");try (Connection con = Database.getConnection();Statement st = con.createStatement();ResultSet rs = jobid != null ? st.executeQuery("select * from zhiyuan where jobid = '" + jobid + "'") : st.executeQuery("select * from zhiyuan")) {while (rs.next()) {%><tr><td><%= rs.getString("jobid") %></td><td><%= rs.getString("name") %></td><td><%= rs.getString("sex") %></td><td><%= rs.getString("birthday") %></td><td><%= rs.getString("department") %></td><td><a href="resetpassword.jsp?jobid=<%= rs.getString("jobid") %>">重置密码</a></td></tr><%}} catch (Exception e) {e.printStackTrace();}%></table><a href="guanliyuan.jsp">返回首页</a>

` `<%--Created by IntelliJ IDEA.User: 32262Date: 2024/12/9Time: 19:56To change this template use File | Settings | File Templates. --%> <%@ page import="java.sql.Connection" %> <%@ page import="java.sql.PreparedStatement" %> <%@ page import="org.example.kaoqin.Database" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <%String jobid = request.getParameter("jobid");String newPassword = "123456"; // 设置默认密码或从请求中获取新密码

try (Connection connection = Database.getConnection();PreparedStatement statement = connection.prepareStatement("UPDATE zhiyuan SET password = ? WHERE jobid = ?")) {statement.setString(1, newPassword);statement.setString(2, jobid);int rowsAffected = statement.executeUpdate();if (rowsAffected > 0) {System.out.println("<h2>密码重置成功！</h2>");} else {System.out.println("<h2>密码重置失败！</h2>");}
} catch (Exception e) {e.printStackTrace();System.out.println("<h2>发生错误！</h2>");
}

%>
返回查询页面

`

修改密码
`<%--
Created by IntelliJ IDEA.
User: 32262
Date: 2024/12/9
Time: 18:00
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>

工号	姓名	性别	生日	部门	职务