基于javaweb+mysql的jsp+servlet宿舍管理系统(超级管理员、宿舍管理员、学生)(java+jsp+servlet+javabean+mysql+tomcat)

运行环境

Java≥8、MySQL≥5.7、Tomcat≥8

开发工具

eclipse/idea/myeclipse/sts等均可配置运行

适用

课程设计，大作业，毕业设计，项目练习，学习演示等

功能说明

超级管理员：登录退出、宿舍管理员管理、学生管理、宿舍楼管理、缺勤管理、修改密码

宿舍管理员：登录退出、学生管理、缺勤管理

学生：登录退出、缺勤查看

超级管理员

宿舍管理员

学生

技术框架

JSP Servlet MySQL JDBC Tomcat CSS JavaScript

基于javaweb+mysql的JSP+Servlet宿舍管理系统(超级管理员、宿舍管理员、学生)(java+jsp+servlet+javabean+mysql+tomcat)

		if(action != null & action.equals("list")) {
			//宿舍管理员查询
			String searchType = request.getParameter("searchType");
			String keyword = request.getParameter("keyword");
			System.out.println("searchType:"+searchType+"  keyword:"+keyword);
			
			//查询宿舍管理员
			List<User>  users = userService.findManager(searchType,keyword);
			
			request.setAttribute("searchType", searchType);
			request.setAttribute("keyword", keyword);
			request.setAttribute("users", users);
			request.setAttribute("mainRight", "dormManagerList.jsp");
			request.getRequestDispatcher("/WEB-INF/jsp/main.jsp").forward(request, response);
		}else if(action != null & action.equals("preAdd")) {
			//跳转到宿舍管理员添加页面
			request.setAttribute("mainRight", "dormManagerAddOrUpdate.jsp");
			request.getRequestDispatcher("/WEB-INF/jsp/main.jsp").forward(request, response);
			
		}else if(action != null & action.equals("save")) {
			System.out.println("======保存宿舍管理员=========");
			String name = request.getParameter("name");
			String passWord = request.getParameter("passWord");
			String sex = request.getParameter("sex");
			String tel = request.getParameter("tel");
			//获取复选框中用户选中的宿舍楼
			String[] dormBuildIds = request.getParameterValues("dormBuildId");
			System.out.println("name:"+name+"  pass:"+passWord+"  sex:"+sex+"  tel:"+tel+"  dormBuildIds:"+Arrays.toString(dormBuildIds));
			
			if(id == null || id.equals("")) {
				//保存
				User user = new User(name, passWord, sex, tel, null, 1);
				user.setDisabled(0);
				
				//当前登录的用户
				User user2 = (User) request.getSession().getAttribute("session_user");
				user.setCreateUserId(user2.getId());
				
				userService.saveManager(user,dormBuildIds);
				System.out.println("getServletContext().getContextPath():"+getServletContext().getContextPath());
				

					//查询所有的宿舍楼，在select中遍历
					List<DormBuild>  buildSelects = dormBuildService.find();
					request.setAttribute("buildSelects", buildSelects);
					request.setAttribute("builds", builds);
					request.setAttribute("mainRight", "/WEB-INF/jsp/dormBuildList.jsp");
					request.getRequestDispatcher("/WEB-INF/jsp/main.jsp").forward(request, response);
					
				}
			}else {
				//保存
				if(dormBuild != null) {
					//当前用户输入的宿舍楼名已存在
					//表示跳转到宿舍楼添加页面
					request.setAttribute("error", "当前宿舍楼名已存在，请重新输入！");
					request.setAttribute("mainRight", "/WEB-INF/jsp/dormBuildAddOrUpdate.jsp");
					request.getRequestDispatcher("/WEB-INF/jsp/main.jsp").forward(request, response);
				}else {
					//当前用户输入的宿舍楼名不存在，则保存用户输入的信息到数据库
					DormBuild build = new DormBuild();
					build.setName(name);
					build.setRemark(remark);
					build.setDisabled(0);
					dormBuildService.save(build);
					//保存完成，跑到宿舍楼管理列表页，查询所有宿舍楼
					List<DormBuild>  builds  = dormBuildService.find();
					//查询所有的宿舍楼，在select中遍历
					List<DormBuild>  buildSelects = dormBuildService.find();
					request.setAttribute("buildSelects", buildSelects);
					request.setAttribute("builds", builds);
					request.setAttribute("mainRight", "/WEB-INF/jsp/dormBuildList.jsp");
					request.getRequestDispatcher("/WEB-INF/jsp/main.jsp").forward(request, response);
				}
			}
			
		}else if(action != null & action.equals("preUpdate")) {
			//根据宿舍楼id，查询宿舍楼
			DormBuild build = dormBuildService.findById(Integer.parseInt(id));
			//保存宿舍楼信息，到前端页面展示
			request.setAttribute("build", build);
			//跳转到宿舍楼修改页面
			request.setAttribute("mainRight", "/WEB-INF/jsp/dormBuildAddOrUpdate.jsp");
			request.getRequestDispatcher("/WEB-INF/jsp/main.jsp").forward(request, response);
		}else if(action != null & action.equals("deleteOrAcive")) {
			//删除或激活
			String disabled = request.getParameter("disabled");
			
			DormBuild  dormBuild = dormBuildService.findById(Integer.parseInt(id));
			System.out.println("更新前dormBuild："+dormBuild);
			dormBuild.setDisabled(Integer.parseInt(disabled));
			System.out.println("更新后dormBuild："+dormBuild);
			
			//执行更新
			dormBuildService.update(dormBuild);
			//更新完成，跑到宿舍楼管理列表页，查询所有宿舍楼

			//删除或激活
			String disabled = request.getParameter("disabled");
			
			DormBuild  dormBuild = dormBuildService.findById(Integer.parseInt(id));
			System.out.println("更新前dormBuild："+dormBuild);
			dormBuild.setDisabled(Integer.parseInt(disabled));
			System.out.println("更新后dormBuild："+dormBuild);
			
			//执行更新
			dormBuildService.update(dormBuild);
			//更新完成，跑到宿舍楼管理列表页，查询所有宿舍楼
			List<DormBuild>  builds  = dormBuildService.find();
			//查询所有的宿舍楼，在select中遍历
			List<DormBuild>  buildSelects = dormBuildService.find();
			request.setAttribute("buildSelects", buildSelects);
			request.setAttribute("builds", builds);
			request.setAttribute("mainRight", "/WEB-INF/jsp/dormBuildList.jsp");
			request.getRequestDispatcher("/WEB-INF/jsp/main.jsp").forward(request, response);
		}
		
		
	}

}

                //记住密码一周  时间单位是秒
                CookieUtil.addCookie("cookie_name_pass", 7 * 24 * 60 * 60, request, response, URLEncoder.encode(stuCode, "utf-8"), URLEncoder.encode(password, "utf-8"));
            }
            System.out.println("========跳转到主页面=====");
            //WEB-INF下面的内容是受保护的，不能在通过地址栏直接访问，也不能通过response.sendRedirect重定向的形势访问
            request.getRequestDispatcher("/WEB-INF/jsp/main.jsp").forward(request, response);
            System.out.println("getServletContext().getContextPath():" + getServletContext().getContextPath());
        }
    }
}

/**
 * Servlet implementation class PassWordServlet
 */
@WebServlet("/password.action")
public class PassWordServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public PassWordServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#service(HttpServletRequest request, HttpServletResponse response)

				
			}else {
				//保存
				if(user != null) {
					//说明当前登录的用户有添加该学号学生缺勤记录的权限
					SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
					Date date2 = null;
					try {
						date2 = dateFormat.parse(date);
					} catch (ParseException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
					
					Record record = new Record();
					record.setStudentId(user.getId());
					record.setDate(date2);
					record.setDisabled(0);
					record.setRemark(remark);
					//保存数据到数据库
					recordService.save(record);
					
					response.sendRedirect(getServletContext().getContextPath()+"/record.action?action=list");
				}else {
					//没有添加的权限,跳转到添加页面
					request.setAttribute("error", "您没有添加该学号学生缺勤记录的权限！");
					request.setAttribute("mainRight", "/WEB-INF/jsp/recordAddOrUpdate.jsp");
					request.getRequestDispatcher("/WEB-INF/jsp/main.jsp").forward(request, response);
				}
			}
			
			
			
		}else if(action != null && action.equals("preUpdate")) {
			//跳转到修改页面
			Record record = recordService.findById(Integer.parseInt(id));
			System.out.println("record:"+record);
			
			//查看用户是否有修改考勤记录的权限
			User user = userService.findStuCodeAndManager(record.getUser().getStuCode(),userCurr);
			System.out.println("修改权限user ："+user);
			if(user == null) {
				//去修改权限
				response.sendRedirect(getServletContext().getContextPath()+"/record.action?action=list");

				userService.updateStudent(studentUpdate);
				response.sendRedirect(getServletContext().getContextPath()+"/student.action?action=list");
			}else {
				//表示无修改权限，跳转到学生管理的列表页
				response.sendRedirect(getServletContext().getContextPath()+"/student.action?action=list");
			}
			
		}
			
	}
}

/**
 * Servlet implementation class RecordServlet
 */
@WebServlet("/record.action")
public class RecordServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

public class CookieUtil {

	public static void addCookie(String cookieName, int time, 
			HttpServletRequest request,HttpServletResponse response, 
			String stuCode, String password) {
		//根据保存学号和密码的cookie的名字获取cookie
		Cookie cookie = getCookieByName(request,cookieName);
		//如有该项目保存学号和密码的cookie，则更改cookie的值，如未有则新建cookie
		if(cookie != null) {
			cookie.setValue(stuCode+"#"+password);
		}else {
			cookie = new Cookie(cookieName, stuCode+"#"+password);
		}
		
		//设置cookie的有效时间
		cookie.setMaxAge(time);
		//设置cookie的作用范围 只在当前项目范围中有效
		cookie.setPath(request.getContextPath());
		System.out.println("request.getContextPath():"+request.getContextPath());
		
		response.addCookie(cookie);
	}

	public static Cookie getCookieByName(HttpServletRequest request, String cookieName) {
		//从request中获取当前项目的作用cookie
		Cookie[] cookies = request.getCookies();
		//遍历所有cookie
		if(cookies != null && cookies.length >0) {
			for (Cookie cookie : cookies) {
				//根据cookie的名字获取cookie，并返回
				if(cookie.getName().equals(cookieName)) {
					return cookie;
				}
			}
		}
		return null;
	}

}

/**
 * Servlet implementation class IndexServlet
 */

/**
 * Servlet implementation class PassWordServlet
 */
@WebServlet("/password.action")
public class PassWordServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public PassWordServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#service(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		System.out.println("---------------------password.action---------");
		
		String action = request.getParameter("action");
		//获取当前登录的用户
		User userCur = (User) request.getSession().getAttribute("session_user");
		System.out.println("action:"+action+" userCur:"+userCur);
		
		UserService userService = new UserServiceImpl();
		if(action != null && action.equals("preChange")) {
			//跳转到密码修改页面
			request.setAttribute("mainRight", "/WEB-INF/jsp/passwordChange.jsp");
			request.getRequestDispatcher("/WEB-INF/jsp/main.jsp").forward(request, response);
			
		}else if(action != null && action.equals("ajaxOldPassWord")) {
			//校验用户输入的元密码是否正确
			
			//当前登录的用户在输入框输入的密码
			String oldPassWord = request.getParameter("oldPassWord");
			//当前登录的用户原始密码
			String passWord = userCur.getPassWord();
			
			if(!passWord.equals(oldPassWord)) {
				response.setCharacterEncoding("utf-8");
				PrintWriter writer = response.getWriter();
				writer.print("您输入的原始密码错误，请重新输入！");
			}
			
		}else if(action != null && action.equals("change")) {

			User user = userService.findStuCodeAndManager(record.getUser().getStuCode(),userCurr);
			System.out.println("修改权限user ："+user);
			if(user == null) {
				//去修改权限
				response.sendRedirect(getServletContext().getContextPath()+"/record.action?action=list");
			}else {
				request.setAttribute("record", record);
				request.setAttribute("mainRight", "/WEB-INF/jsp/recordAddOrUpdate.jsp");
				request.getRequestDispatcher("/WEB-INF/jsp/main.jsp").forward(request, response);
			}
			
		}else if(action != null && action.equals("deleteOrAcive")) {
			System.out.println("======删除或者激活=========");
			//删除或者激活
			String disabled = request.getParameter("disabled");
			
			Record record = recordService.findById(Integer.parseInt(id));
			record.setDisabled(Integer.parseInt(disabled));
			
			//查看用户是否有修改考勤记录的权限
			User user = userService.findStuCodeAndManager(record.getUser().getStuCode(),userCurr);
			System.out.println("修改权限user ："+user);
			if(user == null) {
				//无删除激活权限
				response.sendRedirect(getServletContext().getContextPath()+"/record.action?action=list");
			}else {
				//有删除激活权限
				recordService.update(record);
				//跳转到缺勤记录列表页
				response.sendRedirect(getServletContext().getContextPath()+"/record.action?action=list");
			}
		
		}
	}
		

}

			User user = userService.findStuCodeAndManager(stuCode,userCurr);
			System.out.println("查询添加缺勤权限user:"+user);
			
			if(id != null && !id.equals("")) {
				//更新
				if(user != null) {
					//有修改权限
					Record record = recordService.findById(Integer.parseInt(id));
					try {
						record.setDate(new SimpleDateFormat("yyyy-MM-dd").parse(date));
						record.setRemark(remark);
						record.setStudentId(user.getId());
						
						recordService.update(record);
					} catch (ParseException e) {
						e.printStackTrace();
					}
					response.sendRedirect(getServletContext().getContextPath()+"/record.action?action=list");
				}else {
					//无修改权限
					response.sendRedirect(getServletContext().getContextPath()+"/record.action?action=list");
				}
				
			}else {
				//保存
				if(user != null) {
					//说明当前登录的用户有添加该学号学生缺勤记录的权限
					SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
					Date date2 = null;
					try {
						date2 = dateFormat.parse(date);
					} catch (ParseException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
					
					Record record = new Record();
					record.setStudentId(user.getId());
					record.setDate(date2);
					record.setDisabled(0);
					record.setRemark(remark);

			System.out.println("dormBuildId:"+dormBuildId+"  searchType:"+searchType+"  keyword:"+keyword);
			
			//默认查询第一页，需两个参数，当前页码pageIndex，每页展示的条数  
			PageModel pageModel = new PageModel();
			if(pageIndex != null && !pageIndex.equals("")) {
				pageModel.setPageIndex(Integer.parseInt(pageIndex));
			}
			List<User> students = userService.findStudent(dormBuildId,searchType,keyword,user,pageModel);
			//获取查询处理的总数量
			Integer  totalNum = userService.findTotalNum(dormBuildId,searchType,keyword,user);
			System.out.println("totalNum:"+totalNum);
			System.out.println("students:"+students);
			
			request.setAttribute("totalNum", totalNum);
			request.setAttribute("pageIndex", pageModel.getPageIndex());
			request.setAttribute("dormBuildId", dormBuildId);
			request.setAttribute("searchType", searchType);
			request.setAttribute("keyword", keyword);
			request.setAttribute("students", students);
			request.setAttribute("mainRight", "/WEB-INF/jsp/studentList.jsp");
			request.getRequestDispatcher("/WEB-INF/jsp/main.jsp").forward(request, response);
			
		}else if(action != null & action.equals("preAdd")) {
			//根据用户角色查询宿舍楼进行添加学生，
			//如当前用户 为宿舍管理员，他只能添加学生到其管理的宿舍楼
			
			//跳转到学生的添加页面
			request.setAttribute("mainRight", "/WEB-INF/jsp/studentAddOrUpdate.jsp");
			request.getRequestDispatcher("/WEB-INF/jsp/main.jsp").forward(request, response);
			
		}else if(action != null & action.equals("save")) {
			//保存学生
			String stuCode = request.getParameter("stuCode");
			String name = request.getParameter("name");
			String sex = request.getParameter("sex");
			String tel = request.getParameter("tel");
			String passWord = request.getParameter("passWord");
			String  dormBuildId= request.getParameter("dormBuildId");
			String dormCode = request.getParameter("dormCode");
			System.out.println("stuCode:"+stuCode+"  name:"+name+"   sex:"+sex+
					"  tel:"+tel+" passWord:"+passWord+" dormBuildId:"+dormBuildId+
					"  dormCode:"+dormCode);
			
			//未存在，则保存
			User student = userService.findByStuCode(stuCode);
			if(id != null && !id.equals("")) {
				//更新之前，查询数据库是否已经存在当前学号的学生，如已存在，则跳转到添加页面
				if(student != null  && !student.getId().equals(Integer.parseInt(id))) {
					System.out.println("根据学生学号查询student:"+student);
					//当前学号的学生已存在，请重新修改，跳转到该学生的修改页面
					request.getRequestDispatcher("/student.action?action=preUpdate&id="+id).forward(request, response);;
				}else {
					//更新
					User studentUpdate = userService.findById(Integer.parseInt(id));

 */
@WebServlet("/record.action")
public class RecordServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public RecordServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#service(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		System.out.println("====record.action========");
		
		//在tomcat8.0中，如果是post请求，传递过来的中文可能会出现乱码问题 
		request.setCharacterEncoding("utf-8");
		String action = request.getParameter("action");
		String id = request.getParameter("id");
		System.out.println("action:"+action+" recordId:"+id);
		
		//获取当前登录的用户
		User userCurr = (User) request.getSession().getAttribute("session_user");
				
		UserService userService = new UserServiceImpl();
		RecordService recordService = new RecordServiceImpl();
		DormBuildService buildService = new DormBuildServiceImpl();
		
		if(action != null & action.equals("list")) {
			//查询缺勤记录并展示
			Integer roleId = userCurr.getRoleId();
			List<DormBuild>  builds = new ArrayList<DormBuild>();
			if(roleId.equals(0)) {
				//如当前用户是超级管理员，他能将学生添加到所有的宿舍楼,查询所有宿舍楼
				builds = buildService.findAll();
			}else if(roleId.equals(1)) {
				//如当前用户 为宿舍管理员，他只能添加学生到其管理的宿舍楼
				builds =  buildService.findByUserId(userCurr.getId());
			}
			System.out.println("builds:"+builds);
			request.setAttribute("builds", builds);

			request.setAttribute("students", students);
			request.setAttribute("mainRight", "/WEB-INF/jsp/studentList.jsp");
			request.getRequestDispatcher("/WEB-INF/jsp/main.jsp").forward(request, response);
			
		}else if(action != null & action.equals("preAdd")) {
			//根据用户角色查询宿舍楼进行添加学生，
			//如当前用户 为宿舍管理员，他只能添加学生到其管理的宿舍楼
			
			//跳转到学生的添加页面
			request.setAttribute("mainRight", "/WEB-INF/jsp/studentAddOrUpdate.jsp");
			request.getRequestDispatcher("/WEB-INF/jsp/main.jsp").forward(request, response);
			
		}else if(action != null & action.equals("save")) {
			//保存学生
			String stuCode = request.getParameter("stuCode");
			String name = request.getParameter("name");
			String sex = request.getParameter("sex");
			String tel = request.getParameter("tel");
			String passWord = request.getParameter("passWord");
			String  dormBuildId= request.getParameter("dormBuildId");
			String dormCode = request.getParameter("dormCode");
			System.out.println("stuCode:"+stuCode+"  name:"+name+"   sex:"+sex+
					"  tel:"+tel+" passWord:"+passWord+" dormBuildId:"+dormBuildId+
					"  dormCode:"+dormCode);
			
			//未存在，则保存
			User student = userService.findByStuCode(stuCode);
			if(id != null && !id.equals("")) {
				//更新之前，查询数据库是否已经存在当前学号的学生，如已存在，则跳转到添加页面
				if(student != null  && !student.getId().equals(Integer.parseInt(id))) {
					System.out.println("根据学生学号查询student:"+student);
					//当前学号的学生已存在，请重新修改，跳转到该学生的修改页面
					request.getRequestDispatcher("/student.action?action=preUpdate&id="+id).forward(request, response);;
				}else {
					//更新
					User studentUpdate = userService.findById(Integer.parseInt(id));
					studentUpdate.setStuCode(stuCode);
					studentUpdate.setSex(sex);
					studentUpdate.setTel(tel);
					studentUpdate.setName(name);
					studentUpdate.setPassWord(passWord);
					studentUpdate.setDormBuildId(Integer.parseInt(dormBuildId));

					request.setAttribute("error", "您没有添加该学号学生缺勤记录的权限！");
					request.setAttribute("mainRight", "/WEB-INF/jsp/recordAddOrUpdate.jsp");
					request.getRequestDispatcher("/WEB-INF/jsp/main.jsp").forward(request, response);
				}
			}
			
			
			
		}else if(action != null && action.equals("preUpdate")) {
			//跳转到修改页面
			Record record = recordService.findById(Integer.parseInt(id));
			System.out.println("record:"+record);
			
			//查看用户是否有修改考勤记录的权限
			User user = userService.findStuCodeAndManager(record.getUser().getStuCode(),userCurr);
			System.out.println("修改权限user ："+user);
			if(user == null) {
				//去修改权限
				response.sendRedirect(getServletContext().getContextPath()+"/record.action?action=list");
			}else {
				request.setAttribute("record", record);
				request.setAttribute("mainRight", "/WEB-INF/jsp/recordAddOrUpdate.jsp");
				request.getRequestDispatcher("/WEB-INF/jsp/main.jsp").forward(request, response);
			}
			
		}else if(action != null && action.equals("deleteOrAcive")) {
			System.out.println("======删除或者激活=========");
			//删除或者激活
			String disabled = request.getParameter("disabled");
			
			Record record = recordService.findById(Integer.parseInt(id));
			record.setDisabled(Integer.parseInt(disabled));
			
			//查看用户是否有修改考勤记录的权限
			User user = userService.findStuCodeAndManager(record.getUser().getStuCode(),userCurr);
			System.out.println("修改权限user ："+user);
			if(user == null) {
				//无删除激活权限
				response.sendRedirect(getServletContext().getContextPath()+"/record.action?action=list");
			}else {
				//有删除激活权限
				recordService.update(record);
				//跳转到缺勤记录列表页
				response.sendRedirect(getServletContext().getContextPath()+"/record.action?action=list");
			}
		
		}
	}
		

}

        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#service(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		System.out.println("========退出==========");
		//清除保存在session中的用户信息
		request.getSession().removeAttribute("session_user");
		
		//清除保存在cookie中的用户信息
		//根据名字查找保存当前项目的学号和密码
		Cookie  cookie = CookieUtil.getCookieByName(request,"cookie_name_pass");
		if(cookie != null) {
			//设计cookie有效时间0 ，马上失效
			cookie.setMaxAge(0);
			//设置cookie作用范围
			cookie.setPath(request.getContextPath());
			System.out.println("request.getContextPath():"+request.getContextPath());
			//将cookie响应出去
			response.addCookie(cookie);
		}
		response.sendRedirect("index.jsp");
	}

}

public class CookieUtil {

	public static void addCookie(String cookieName, int time, 
			HttpServletRequest request,HttpServletResponse response, 
			String stuCode, String password) {
		//根据保存学号和密码的cookie的名字获取cookie
		Cookie cookie = getCookieByName(request,cookieName);
		//如有该项目保存学号和密码的cookie，则更改cookie的值，如未有则新建cookie
		if(cookie != null) {
			cookie.setValue(stuCode+"#"+password);
		}else {
			cookie = new Cookie(cookieName, stuCode+"#"+password);
		}
		
		//设置cookie的有效时间
		cookie.setMaxAge(time);
		//设置cookie的作用范围 只在当前项目范围中有效
		cookie.setPath(request.getContextPath());
		System.out.println("request.getContextPath():"+request.getContextPath());
		

			//当前登录的用户原始密码
			String passWord = userCur.getPassWord();
			
			if(!passWord.equals(oldPassWord)) {
				response.setCharacterEncoding("utf-8");
				PrintWriter writer = response.getWriter();
				writer.print("您输入的原始密码错误，请重新输入！");
			}
			
		}else if(action != null && action.equals("change")) {
			//修改密码
			String newPassword = request.getParameter("newPassword");
			userCur.setPassWord(newPassword);
			userService.updatePassWord(userCur);
			
			System.out.println("修改密码userCur:"+userCur);
			
			request.getRequestDispatcher("/index.jsp").forward(request, response);
		}
	}

}

/**
 * Servlet implementation class LoginOutServlet
 */
@WebServlet("/loginOut.action")
public class LoginOutServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       

/**
 * Servlet implementation class RecordServlet
 */
@WebServlet("/record.action")
public class RecordServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public RecordServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#service(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		System.out.println("====record.action========");
		
		//在tomcat8.0中，如果是post请求，传递过来的中文可能会出现乱码问题 
		request.setCharacterEncoding("utf-8");
		String action = request.getParameter("action");
		String id = request.getParameter("id");
		System.out.println("action:"+action+" recordId:"+id);
		
		//获取当前登录的用户

/**
 * Servlet implementation class RecordServlet
 */
@WebServlet("/record.action")
public class RecordServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public RecordServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#service(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		System.out.println("====record.action========");
		
		//在tomcat8.0中，如果是post请求，传递过来的中文可能会出现乱码问题 
		request.setCharacterEncoding("utf-8");
		String action = request.getParameter("action");
		String id = request.getParameter("id");
		System.out.println("action:"+action+" recordId:"+id);
		
		//获取当前登录的用户
		User userCurr = (User) request.getSession().getAttribute("session_user");
				
		UserService userService = new UserServiceImpl();
		RecordService recordService = new RecordServiceImpl();
		DormBuildService buildService = new DormBuildServiceImpl();
		
		if(action != null & action.equals("list")) {
			//查询缺勤记录并展示
			Integer roleId = userCurr.getRoleId();
			List<DormBuild>  builds = new ArrayList<DormBuild>();
			if(roleId.equals(0)) {
				//如当前用户是超级管理员，他能将学生添加到所有的宿舍楼,查询所有宿舍楼
				builds = buildService.findAll();
			}else if(roleId.equals(1)) {
				//如当前用户 为宿舍管理员，他只能添加学生到其管理的宿舍楼
				builds =  buildService.findByUserId(userCurr.getId());
			}
			System.out.println("builds:"+builds);
			request.setAttribute("builds", builds);