题库管理|考试管理|基于Web的大学生题库管理系统的设计与实现

package top.tmithy.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import top.tmithy.daomain.AdminUser;
import top.tmithy.service.AdminUserService;
@WebServlet("/adminUserServlet")
public class AdminUserServlet extends HttpServlet {
  private static final long serialVersionUID = 1L;
  private AdminUserService adminUserService = new AdminUserService();
  private AdminUser adminUser = new AdminUser();
  protected void doGet(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    doPost(request, response);
  }
  protected void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    String action = request.getParameter("action");
    if ("login".equals(action)) {
      login(request, response);
    }
  }
  private void login(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
    request.setCharacterEncoding("UTF-8");
    /*
     * 1.判断验证码是否输入正确
     * 2.获取表单信息； 
     * 3.验证表单信息的合法性，调用Service层验证账号密码的正确性； 
     * 4.正确，储存用户信息跳转至index.jsp；
     * 5.失败，跳转至login.jsp。
     */
        //1.判断验证码是否输入正确
    String vcode = request.getParameter("vcode");
    String csode = (String)request.getSession().getAttribute("vscode");
    if(!vcode.equalsIgnoreCase(csode)) {
      request.setAttribute("msg", "<script>alert('登录失败，验证码错误！');window.location.herf='"+ request.getContextPath() +"/login.jsp';</script>");
    }
    // 2.获取表单信息；
    String username = request.getParameter("username");
    String password = request.getParameter("password");
    // 3.验证表单验证表单信息的合法性，调用Service层验证账号密码的正确性；
    adminUser = adminUserService.VerifyInfo(username, password);
    if (adminUser != null) {
      // 4.正确，储存用户信息跳转至index.jsp；
      request.getSession().setAttribute("role", "0");
      request.getSession().setAttribute("user", adminUser);
      request.setAttribute("msg", "<script>alert('登录成功！'); window.location.href='" + request.getContextPath()
          + "/admin/index.jsp';</script>");
      request.getRequestDispatcher("msg.jsp").forward(request, response);
    } else {
      // 5.失败，跳转至login.jsp。
      request.setAttribute("msg", "<script>alert('登录失败，账号或密码错误！'); window.location.href='" + request.getContextPath()
          + "/login.jsp';</script>");
      request.getRequestDispatcher("msg.jsp").forward(request, response);
    }
  }
}

package top.tmithy.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import top.tmithy.daomain.TeacherUser;
import top.tmithy.service.TeaUserService;
@WebServlet("/teaUserServlet")
public class TeaUserServlet extends HttpServlet {
  private static final long serialVersionUID = 1L;
  private TeaUserService teaUserService = new TeaUserService();
  protected void doGet(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    doPost(request, response);
  }
  protected void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    String action = request.getParameter("action");
    if ("login".equals(action)) {
      login(request, response);
    }
  }
  private void login(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    /*
     * 1.判断验证码是否输入正确
     * 2.获取表单信息； 
     * 3.验证表单信息的合法性，调用service层判断用户名和密码的正确性； 
     * 4.正确，跳转至index.jsp；
     * 5.错误，跳转至login.jsp。
     */
    //1.判断验证码是否输入正确
    String vcode = request.getParameter("vcode");
    String csode = (String)request.getSession().getAttribute("vscode");
    if(!vcode.equalsIgnoreCase(csode)) {
      request.setAttribute("msg", "<script>alert('登录失败，验证码错误！'); window.location.href='" + request.getContextPath()
      + "/login.jsp';</script>");
  request.getRequestDispatcher("msg.jsp").forward(request, response);
    }
    // 2.获取表单信息；
    String username = request.getParameter("username");
    String password = request.getParameter("password");
    // 3.验证表单信息的合法性，调用service层判断用户名和密码的正确性；
    TeacherUser teacherUser = teaUserService.VerifyInfo(username, password);
    if (teacherUser != null) {
      // 4.正确，跳转至index.jsp；
      request.getSession().setAttribute("role", "1");
      request.getSession().setAttribute("user", teacherUser);
      request.setAttribute("msg", "<script>alert('登录成功！'); window.location.href='" + request.getContextPath()
          + "/teacher/index.jsp';</script>");
      request.getRequestDispatcher("msg.jsp").forward(request, response);
    } else {
      // 5.错误，跳转至login.jsp。
      request.setAttribute("msg", "<script>alert('登录失败，账号或密码错误！'); window.location.href='" + request.getContextPath()
          + "/login.jsp';</script>");
      request.getRequestDispatcher("msg.jsp").forward(request, response);
    }
  }
}