使用cookie实现用户名密码回填功能

package servlet; import DAOFactory.DAOFactory; import cookie.CookieStill; import lei.Consumer; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.Cookie; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.net.URLEncoder; /** * @Date: 2022/3/17 - 03 - 17 - 18:56 * @Description: */ @WebServlet(name = "CoolieServlet",urlPatterns = "/cookie") public class CoolieServlet extends HttpServlet { protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding("UTF-8");//输出一个完整的网页 response.setContentType("text/html;charset=UTF-8");//这句话必须要写 response.setHeader("content-type", "text/html;charset=UTF-8"); String un=request.getParameter("user"); String ps=request.getParameter("pass"); String n = URLEncoder.encode(un, "UTF-8"); try { Consumer byname = DAOFactory.getIEmpDAOInstance().findByname(un); System.out.println(byname); if (un!=null&&un.equals(byname.getName())&&ps!=null){ CookieStill.myaddcok(response,"username",n,200,"/"); CookieStill.myaddcok(response,"password",ps,200,"/"); //response.sendRedirect(request.getContextPath()+"/page/welcome.jsp"); request.getRequestDispatcher("/page/welcome.jsp").forward(request,response); }else { System.out.println(" 0099099900"); } } catch (Exception e) { e.printStackTrace(); } } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doPost(request,response); } }