註銷

Question

的login.html

<form method="get" action="NewServlet"> 
     name: <input type="text" name="user"> 
     <br> 
     pass: <input type="password" name="password"> 
     <br> 
     <input type="submit"> 
    </form> 

NewServlet 


    response.setContentType("text/html;charset=UTF-8"); 
    PrintWriter out = response.getWriter(); 
    String s = request.getParameter("user"); 
    String pass = request.getParameter("password"); 
    UserBean bean=new UserBean(); 
    bean.setLogin(request.getParameter("user")); 
    bean.setPassword(request.getParameter("password")); 
     if(bean.getLogin().equals("admin")&&bean.getPassword().equals("prerna")) 

    { 
     HttpSession session=request.getSession(true); 

     request.setAttribute("user",bean); 
     session.setAttribute("user",request); 

     RequestDispatcher rd=request.getRequestDispatcher("/show.jsp"); 
     rd.forward(request,response); 
    } 
    else 
{ 
response.sendError(404, "invalid usename or password"); 
    // response.sendRedirect("http://www.google.com"); 
    out.print("<H1>ERROR</H1>"); 


} 

loginout.jsp 

<% 

    session.invalidate(); 
    response.sendRedirect("login.jsp"); 

%> 

後，當我點擊後退按鈕我以前的頁面獲取顯示，我不想防止回到前一頁。 任何人都可以建議我對於這個問題

Answer 1

嘗試添加附註no-cache標題的解決方案：http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.32