Java项目:图书管理系统(java+swing+Gui+Mysql)

<code>@WebServlet("/LoginServlet")
public class LoginServlet extends HttpServlet {
        private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public LoginServlet() {
        super();
        // TODO Auto-generated constructor stub
    }
        /**
         * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
         */
        protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
                // TODO Auto-generated method stub
//                response.getWriter().append("Served at: ").append(request.getContextPath());
        }
        /**
         * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
         */
        protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
                // TODO Auto-generated method stub
//                doGet(request, response);
                //登录的判断
                PrintWriter out = response.getWriter();
                request.setCharacterEncoding("UTF-8");
                response.setContentType("text/html;charset=UTF-8");
                //获取账号和密码
                String username = request.getParameter("username");
                String password = request.getParameter("password");
                AdminDao userdao = new AdminDao();
                //对账号和密码进行判断
                boolean result = userdao.Login_verify(username, password);
                HttpSession session = request.getSession();
                //判断输入正确
                if(result){
                        AdminBean adminbean = new AdminBean();
                        AdminDao admindao = new AdminDao();
                        //更加账号和密码查找出读者的信息
                        adminbean = admindao.getAdminInfo(username,password);
                        //将aid存入session中
                        session.setAttribute("aid", ""+adminbean.getAid());
                        //设置session的失效时间
                        session.setMaxInactiveInterval(6000);
                        //根据status的值来判断是管理员，还是读者，status=1为读者
                        if(adminbean.getStatus()==1){
                                response.sendRedirect("/books/index2.jsp");
                        }else{
                                response.sendRedirect("/books/admin.jsp");
                        }
                }else{
                        //没有找到对应的账号和密码，返回重新登录
                        session.setAttribute("state", "密码错误");
                        response.sendRedirect("/books/login.jsp");
                }
        }
}
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<code>@WebServlet("/AddUserServlet")
public class AddUserServlet extends HttpServlet {
        private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public AddUserServlet() {
        super();
        // TODO Auto-generated constructor stub
    }
        /**
         * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
         */
        protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
                // TODO Auto-generated method stub
//                response.getWriter().append("Served at: ").append(request.getContextPath());
        }
        /**
         * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
         */
        protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
                // TODO Auto-generated method stub
//                doGet(request, response);
                //设置编码类型
                request.setCharacterEncoding("UTF-8");
                response.setContentType("text/html;charset=UTF-8");
                //获取要添加的读者的信息
                String username = request.getParameter("username");
                String password = request.getParameter("password");
                String name = request.getParameter("name");
                String email = request.getParameter("email");
                String phone = request.getParameter("phone");
                int lend_num = Integer.parseInt(request.getParameter("lend_num"));
                int max_num = Integer.parseInt(request.getParameter("max_num"));
        
                AdminDao userdao = new AdminDao();
                //调用函数添加读者信息
                userdao.Register(username,password,name,email,phone,lend_num,max_num);
        response.sendRedirect("/books/admin_user.jsp");
        }
}
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<code>@WebServlet("/AddBookServlet")
public class AddBookServlet extends HttpServlet {
        private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public AddBookServlet() {
        super();
        // TODO Auto-generated constructor stub
    }
        /**
         * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
         */
        protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
                // TODO Auto-generated method stub
//                response.getWriter().append("Served at: ").append(request.getContextPath());
        }
        /**
         * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
         */
        protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
                // TODO Auto-generated method stub
//                doGet(request, response);
                //设置编码类型
                request.setCharacterEncoding("UTF-8");
                response.setContentType("text/html;charset=UTF-8");
                //获取要添加图书的信息
                String card = request.getParameter("card");
                String name = request.getParameter("name");
                String type = request.getParameter("type");
                String autho = request.getParameter("autho");
                String press = request.getParameter("press");
                int num = Integer.parseInt(request.getParameter("num"));
                BookDao bookdao = new BookDao();
                //调用函数，存入图书
                bookdao.addBook(card,name,type,autho,press,num);
                response.sendRedirect("/books/admin_book.jsp");
        }
}
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