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)

httpServletRequest.getSession().setAttribute("session_user", user);
chain.doFilter(httpServletRequest, response);
}else if(requestUrI.startsWith(path+"/student.action") && !roleId.equals(2)) {
//当用户发送的请求是学生模块的请求时，只有当前用户角色不是学生就放行
httpServletRequest.getSession().setAttribute("session_user", user);
chain.doFilter(httpServletRequest, response);
}else if(requestUrI.startsWith(path+"/record.action") ||
requestUrI.startsWith(path+"/password.action")||
requestUrI.startsWith(path+"/loginOut.action")||
requestUrI.startsWith(path+"/index.action")) {
//当用户发送的请求是考勤、修改密码、退出模块的请求时，不管用户的角色是什么，都放行
httpServletRequest.getSession().setAttribute("session_user", user);
chain.doFilter(httpServletRequest, response);
}else {
httpServletRequest.getRequestDispatcher("/index.jsp").forward(httpServletRequest, response);
}
}
/**
* @see Filter#init(FilterConfig)
*/
public void init(FilterConfig fConfig) throws ServletException {
// TODO Auto-generated method stub
}
}
/**
* Servlet implementation class LoginServlet
*/
@WebServlet("/login")
public class LoginServlet extends HttpServlet {
private static final long serialVersionUID = 1L;

String keyword = request.getParameter("keyword");
//当前要查询的页面
String pageIndex = request.getParameter("pageIndex");
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);

}
}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);

//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));
studentUpdate.setDormCode(dormCode);
userService.updateStudent(studentUpdate);
response.sendRedirect(getServletContext().getContextPath()+"/student.action?action=list");
}
}else {
//保存
if(student != null) {
//在保存之前，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
response.sendRedirect(getServletContext().getContextPath()+"/student.action?action=preAdd");
}else {
User user2 = new User();
user2.setStuCode(stuCode);
user2.setSex(sex);
user2.setTel(tel);

}
}
/**
* 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");

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);
String startDate = request.getParameter("startDate");
String endDate = request.getParameter("endDate");
String dormBuildId = request.getParameter("dormBuildId");
String searchType = request.getParameter("searchType");
String keyword = request.getParameter("keyword");
String pageIndex = request.getParameter("pageIndex");
System.out.println("startDate:"+startDate+" endDate:"+endDate+" dormBuildId:"+dormBuildId+
" searchType:"+searchType+" keyword:"+keyword+"  pageIndex:"+pageIndex);
//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));
}
//分页查询考勤记录
List<Record> records = recordService.findRecords(startDate,endDate,dormBuildId,
searchType,keyword,userCurr,pageModel);
System.out.println("records:"+records);
//获取查询结果总数
Integer totalNum = recordService.getToTalNum(startDate,endDate,dormBuildId,
searchType,keyword,userCurr);
System.out.println("totalNum:"+totalNum);
request.setAttribute("totalNum", totalNum);
request.setAttribute("startDate", startDate);
request.setAttribute("endDate", endDate);
request.setAttribute("dormBuildId", dormBuildId);
request.setAttribute("searchType", searchType);
request.setAttribute("keyword", keyword);
request.setAttribute("pageIndex", pageModel.getPageIndex());
request.setAttribute("records", records);

DormBuild  dormBuild = dormBuildService.findByName(name);
System.out.println("dormBuild:"+dormBuild);
if(id != null && !id.equals("")) {
//更新
if(dormBuild != null && !dormBuild.getId().equals(Integer.parseInt(id))) {
//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！");
//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);
request.setAttribute("mainRight", "/WEB-INF/jsp/dormBuildAddOrUpdate.jsp");
request.getRequestDispatcher("/WEB-INF/jsp/main.jsp").forward(request, response);
}else {
dormBuild = dormBuildService.findById(Integer.parseInt(id));
dormBuild.setName(name);
dormBuild.setRemark(remark);
//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);
}
}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);

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")) {
//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;
/**
* @see HttpServlet#HttpServlet()
*/
public LoginOutServlet() {
super();
// TODO Auto-generated constructor stub
}

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());
}else {
//修改
//通过宿舍管理员ID获取宿舍管理员
User user = userService.findById(Integer.parseInt(id));
user.setName(name);
user.setPassWord(passWord);
user.setSex(sex);
user.setTel(tel);
userService.updateManager(user);
//修改还需修改宿舍管理员与宿舍楼的中间表
//① 删除当前宿舍管理员管理的所有宿舍楼
buildService.deleteByUserId(user.getId());
//② 新增当前宿舍管理员管理的所有宿舍楼  
buildService.saveManagerAndBuild(user.getId(),dormBuildIds);
}

User user = userService.findById(Integer.parseInt(id));
//根据宿舍管理员ID获取宿舍管理员管理的楼栋
List<DormBuild> userBuilds = buildService.findByUserId(user.getId());
user.setDormBuilds(userBuilds);
System.out.println("user:"+user);
List<Integer>  userBuildids = new ArrayList<>();
//遍历当前宿舍管理员管理的所有宿舍，获取当时当前宿舍管理员管理的所有宿舍ID
for (DormBuild userBuild : userBuilds) {
userBuildids.add(userBuild.getId());
}
request.setAttribute("userBuildids", userBuildids);
request.setAttribute("user", user);
request.setAttribute("mainRight", "dormManagerAddOrUpdate.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");
//通过宿舍管理员ID获取宿舍管理员
User user = userService.findById(Integer.parseInt(id));
user.setDisabled(Integer.parseInt(disabled));
userService.updateManager(user);
//跳转到宿舍管理员列表页，查看所有的宿舍管理员
//重定向，请求链断开，不能在下一个servlet或jsp中获取保存在request中的参数
response.sendRedirect(getServletContext().getContextPath()+"/dormManager.action?action=list");
}
}
}
/**

/**
* 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
}

/**
* 该过滤器拦截所有以.action的请求
*/
@WebFilter("*.action")
public class LoginFilter implements Filter {
/**
* Default constructor. 
*/
public LoginFilter() {
// TODO Auto-generated constructor stub
}
/**
* @see Filter#destroy()
*/
public void destroy() {
// TODO Auto-generated method stub
}
/**
* @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
*/
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
System.out.println("------------登录拦截器------------");
HttpServletRequest  httpServletRequest = (HttpServletRequest) request;
HttpSession  session = httpServletRequest.getSession();
//①获取登录后保存在session中的用户信息
User user  = (User) session.getAttribute("session_user");
System.out.println("session user:"+user);

public class LoginOutServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public LoginOutServlet() {
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("========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);

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");
}
}
}
}
/**
* Servlet implementation class DormBuildServlet
*/

//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());
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;

/**
* 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");

request.setAttribute("pageIndex", pageModel.getPageIndex());
request.setAttribute("records", records);
request.setAttribute("mainRight", "/WEB-INF/jsp/recordList.jsp");
request.getRequestDispatcher("/WEB-INF/jsp/main.jsp").forward(request, response);
}else if(action != null && action.equals("preAdd")) {
//跳转到添加页面
request.setAttribute("mainRight", "/WEB-INF/jsp/recordAddOrUpdate.jsp");
request.getRequestDispatcher("/WEB-INF/jsp/main.jsp").forward(request, response);
}else if(action != null && action.equals("save")) {
//保存
String stuCode = request.getParameter("stuCode");
String date = request.getParameter("date");
String remark = request.getParameter("remark");
System.out.println("remark:"+remark+"  date:"+date+"  stuCode:"+stuCode);
//做保存前，判断用户是否有添加该学号学生缺勤记录的权限
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");
}