[FIXED] Display password error message in login page itself using servlet

Issue

I want to display Username or password incorrect message in a particular <div> in the Login page.

Here is my login.html code.

<div class="wrapper">
            <form class="form-signin" method="POST" action="j_security_check">       
                <h2 class="form-signin-heading text-center" id="head">Login</h2>
                <input type="text" class="form-control"  id="txtuser" name="j_username" placeholder="Username" required="required" />
            <input type="password" class="form-control" id="txtuser" name="j_password" placeholder="Password" required="required"/>
            <div id="error"></div>  
                <button class="btn btn-lg btn-default btn-block login1" id="txtuser" type="submit"><span class="glyphicon glyphicon-log-in"></span> Login</button>   
            </form>
</div>

Here is my servlet code

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

  response.setContentType("text/html");
  PrintWriter out = response.getWriter();

  RequestDispatcher rd=request.getRequestDispatcher("/login.html");

  out.println("<script>");
  out.println("document.getElementById('error').innerText=Sorry UserName or Password Error");
  out.println("</script>");

  rd.include(request, response);
}

The message is not displaying in the <div id="error"> in login file

Solution

I found an answer.It is working

Here is my JSP

<%
String login_msg=(String)request.getAttribute("error");  
if(login_msg!=null)
out.println("<font color=red size=4px>"+login_msg+"</font>");
%>

Here is my Servlet

request.setAttribute("error","Invalid Username or Password");
RequestDispatcher rd=request.getRequestDispatcher("/login.jsp");            
rd.include(request, response);

Answered By - Premkumar