Server client communication using Javaservlets and JSP - ajax

Question

I am trying to understand the aspects to build dynamic web application by referring many resources. I am facing issue while I am trying to communicate and pass the parameter from AJAX to java servlets and to JSP.
Please find the code below:
**HTML Code**:
<button onclick="viewcart()">ViewMyCart</button>
<script>
function viewcart(){
$.ajax({
type:"POST",
url:'./ShowCart',
});
}
</script>
**Servlet (ShowCart):**
try {
System.out.println("In ShowCart code");
LoginDB log=new LoginDB();
Connection con=log.connect();
String SQL="select * from bookname";
PreparedStatement prep=con.prepareStatement(SQL);
ResultSet rs=prep.executeQuery(SQL);
ArrayList<String> bookname=new ArrayList<String>();
while(rs.next()) {
bookname.add(rs.getString("name"));
}
System.out.println("bookname is"+bookname);
request.setAttribute("MyBookNames", bookname);
request.getRequestDispatcher("Display.jsp").forward(request, response);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
**Display.JSP:**
<h1> Your cart </h1>
<%
ArrayList<String> booknames_list= (ArrayList)request.getAttribute("MyBookNames");
System.out.println("In JSP class Display");
System.out.println(booknames_list);
%>
</body>
</html>
Values are actually in booknames_list . But I wanted to display the values in a separate page. Can you all please guide me in achieving the same?
Thank you