基本目标是：
1）建立教学使用信息的基础数据库，管理员可管理宿舍使用的相关信息，可以对信息进行查询，修改及删除操作；
2）实现学生信息的基本管理，管理员可以添加学生信息，查看学生信息，对学生信息进行修改及删除操作；
3）实现宿舍信息的管理，管理员可以添加宿舍信息，查看宿舍信息，对宿舍信息进行修改及删除操作。
4）实现留言管理，学生可以在前台进行留言。
5）实现宿舍使用信息的管理，管理员可以发布宿舍使用信息，供前台的学生查看。
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package com.action;
/**
* 管理员登陆 增加 修改 删除 删除登陆日志
*/
import java.io.IOException;
import java.util.List;
import java.util.StringTokenizer;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import com.bean.AdminBean;
import com.bean.SystemBean;
import com.util.Constant;
import com.util.MD5;
public class AdminServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public AdminServlet() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request
* the request send by the client to the server
* @param response
* the response send by the server to the client
* @throws ServletException
* if an error occurred
* @throws IOException
* if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to
* post.
*
* @param request
* the request send by the client to the server
* @param response
* the response send by the server to the client
* @throws ServletException
* if an error occurred
* @throws IOException
* if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType(Constant.CONTENTTYPE);
request.setCharacterEncoding(Constant.CHARACTERENCODING);
try {
String method = request.getParameter("method").trim();
AdminBean loginbean = new AdminBean();
HttpSession session = request.getSession();
session.setMaxInactiveInterval(1200);
SystemBean systembean = new SystemBean();
String sysdir = systembean.getDir();
if (method.equals("one")) {// admin登录
String username = request.getParameter("username");
String password = request.getParameter("password");
if (username == null || username.trim().equals("")) {
request.setAttribute("message", "请正确输入用户名！");
request.getRequestDispatcher(sysdir + "/login.jsp").forward(request, response);
} else if (password == null || password.trim().equals("")) {
request.setAttribute("message", "请输入密码！");
request.getRequestDispatcher(sysdir + "/login.jsp").forward(request, response);
} else {
String md5password = MD5.MD5(password);
String agent = request.getHeader("user-agent");
StringTokenizer st = new StringTokenizer(agent, ";");
String useros = st.nextToken();
String loginip = request.getRemoteAddr();
int flag = loginbean.adminLogin(username, md5password, password, useros, loginip);
switch (flag) {
case Constant.SUCCESS:
List list = loginbean.getAdminInfo(username);
session.setAttribute("user", username);
session.setAttribute("list", list);
request.getRequestDispatcher(sysdir + "/").forward(request, response);
break;
case Constant.NAME_ERROR:
request.setAttribute("message", "用户名错误！请确认管理权限！");
request.getRequestDispatcher(sysdir + "/login.jsp").forward(request, response);
break;
case Constant.PASSWORD_ERROR:
request.setAttribute("message", "密码错误，请确认管理权限！");
request.getRequestDispatcher(sysdir + "/login.jsp").forward(request, response);
break;
}
}
} else if (method.equals("editpwd")) {// admin edit password
String username2 = (String) session.getAttribute("user");
if (username2 == null) {
request.getRequestDispatcher("error.jsp").forward(request, response);
} else {
String oldpwd = MD5.MD5(request.getParameter("oldpwd").trim());
String newpwd = MD5.MD5(request.getParameter("newpwd").trim());
String username = (String) session.getAttribute("user");
int flag = loginbean.editPassword(username, oldpwd, newpwd);
switch (flag) {
case Constant.SUCCESS:
request.setAttribute("message", "密码修改成功！");
request.getRequestDispatcher(sysdir + "/system/editpwd.jsp").forward(request, response);
break;
case Constant.PASSWORD_ERROR:
request.setAttribute("message", "原始密码错误，请确认权限！");
request.getRequestDispatcher(sysdir + "/system/editpwd.jsp").forward(request, response);
break;
case Constant.SYSTEM_ERROR:
request.setAttribute("message", "系统维护中，请稍后再试！");
request.getRequestDispatcher(sysdir + "/system/editpwd.jsp").forward(request, response);
break;
}
}
} else if (method.equals("exit")) {// admin exit
session.removeAttribute("user");
session.removeAttribute("list");
System.gc();
request.getRequestDispatcher(sysdir + "/login.jsp").forward(request, response);
} else if (method.equals("manager")) {// add,update manager
String username2 = (String) session.getAttribute("user");
if (username2 == null) {
request.getRequestDispatcher("error.jsp").forward(request, response);
} else {
String ra = request.getParameter("ra").trim();
if (ra.equals("add")) {
String username = request.getParameter("username").trim();
String password = MD5.MD5(request.getParameter("password").trim());
String qx = request.getParameter("qx").trim();
int flag = loginbean.addManager(username, password, qx);
if (flag == Constant.SUCCESS) {
request.setAttribute("message", "增加管理员成功！");
request.getRequestDispatcher(sysdir + "/system/user.jsp").forward(request, response);
} else if (flag == Constant.SAME_NAME) {
request.setAttribute("username", username);
request.setAttribute("message", "该用户名已经存在！");
request.getRequestDispatcher(sysdir + "/system/user.jsp").forward(request, response);
} else {
request.setAttribute("message", "系统维护中，请稍后再试！");
request.getRequestDispatcher(sysdir + "/system/user.jsp").forward(request, response);
}
} else if (ra.equals("update")) {
String username = request.getParameter("username").trim();
String password = request.getParameter("password").trim();
String qx = request.getParameter("qx").trim();
if (!password.equals("")) {
password = MD5.MD5(password);
}
int flag = loginbean.updateManager(username, password, qx);
if (flag == Constant.SUCCESS) {
request.setAttribute("message", "修改管理员信息成功！");
request.getRequestDispatcher(sysdir + "/system/user.jsp").forward(request, response);
} else {
request.setAttribute("message", "系统维护中，请稍后再试！");
request.getRequestDispatcher(sysdir + "/system/user.jsp").forward(request, response);
}
}
}
} else if (method.equals("delm")) {// delete manager
String username2 = (String) session.getAttribute("user");
if (username2 == null) {
request.getRequestDispatcher("error.jsp").forward(request, response);
} else {
int id = Integer.parseInt(request.getParameter("id").trim());
if (id == 1) {
request.setAttribute("message", "不能删除原始帐号！");
request.getRequestDispatcher(sysdir + "/system/user.jsp").forward(request, response);
} else {
int flag = loginbean.delManager(id);
if (flag == Constant.SUCCESS) {
request.setAttribute("message", "删除成功！");
request.getRequestDispatcher(sysdir + "/system/user.jsp").forward(request, response);
} else {
request.setAttribute("message", "系统维护中，请稍后再试！");
request.getRequestDispatcher(sysdir + "/system/user.jsp").forward(request, response);
}
}
}
} else if (method.equals("dellog")) {// delete login note
int id = Integer.parseInt(request.getParameter("id").trim());
int flag = loginbean.delLog(id);
if (flag == Constant.SUCCESS) {
request.setAttribute("message", "删除记录成功！");
request.getRequestDispatcher(sysdir + "/system/log.jsp").forward(request, response);
} else {
request.setAttribute("message", "系统维护中，请稍后再试！");
request.getRequestDispatcher(sysdir + "/system/log.jsp").forward(request, response);
}
} else {// 无参数传入转到错误页面
request.getRequestDispatcher("error.jsp").forward(request, response);
}
} catch (Exception e) {
e.printStackTrace();
request.getRequestDispatcher("error.jsp").forward(request, response);
}
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException
* if an error occure
*/
public void init() throws ServletException {
// Put your code here
}
}
