毕设 天猫网，后台采用的是Java编写，以mysql作为数据库，前端使用html,css,js,jquery,ajax等

package tiaomao.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 javax.servlet.http.HttpSession; import tianmao.dao.UserDao; /** * Servlet implementation class RegisteServlet */ @WebServlet("/RegisteServlet") public class RegisteServlet extends HttpServlet { private static final long serialVersionUID = 1L; /** * @see HttpServlet#HttpServlet() */ public RegisteServlet() { super(); } /** * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { //response.getWriter().append("Served at: ").append(request.getContextPath()); request.setCharacterEncoding("utf-8"); response.setContentType("text/html;charset=utf-8"); String username = request.getParameter("username"); String password = request.getParameter("password"); String isPassword = request.getParameter("isPassword"); //System.out.println(username + "," + password +","+ isPassword); if(username == null || username.trim().isEmpty()) { request.setAttribute("msg", "用户名不能为空"); request.getRequestDispatcher("/registe.jsp").forward(request, response); return; } if(password == null || password.trim().isEmpty()) { request.setAttribute("msg", "密码不能为空"); request.getRequestDispatcher("/registe.jsp").forward(request, response); return; } if(!password.equals(isPassword)) { request.setAttribute("msg", "两次输入密码不同"); request.getRequestDispatcher("/registe.jsp").forward(request, response); return; } UserDao user = new UserDao(); user.addUser(username, password); // request.setAttribute("msg", "恭喜" + username + "注册成功"); // request.getRequestDispatcher("/registe.jsp").forward(request, response); HttpSession session = request.getSession(); session.setAttribute("loginName", username); //System.out.println(session.getAttribute(username)); response.sendRedirect("IndexServlet"); } /** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } }