Opening a page with details about an item (servlet)

Hi!

I am trying to create a web application in java. I am using servlets. I have come to the stage where the user enters a search query and receives a list of items which match his/her query. When the user gets a list of items which match, how can I make it possible for the user to click on an item and it opens a "show" servlet page and this takes the information regarding the item and displays them in this page?

I have tried the below code but this occurs before the list even appears:

PrintWriter out = response.getWriter();
        try {
            out.println("<SCRIPT TYPE='text/javascript'>");

out.println("function openItemDetails(ID) {");
            out.println("alert('hello')");
            HttpSession ses = request.getSession(true);
            ses.setAttribute("item",ID);
            response.sendRedirect("Show");
           out.println("}");
           out.println("</SCRIPT>");

out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet ProcessSearch</title>");  
            out.println("</head>");
            out.println("<body>");
                for (int i=0; i<items.size(); i++) {
                    Items itemToGet = (Items)items.get(i);
                    out.println("<button type='button' onClick='openItemDetails(itemToGet.getId())'>"+itemToGet.getName()+"</button>");
                }
            }
            out.println("<a href='Welcome'>Go back to main page</a>");
            out.println("</body>");
            out.println("</html>");
            
        } finally { 
            out.close();
        }

I don't know whats wrong.

Thanks for any replies

First of all this is a very bad practice. You should be using servlets only as controllers, and the view should be a JSP, or even a static HTML page with some AJAX. But either way, to get the result you need to display the results to the user in some table [which you are not doing], and the javascript invocation you are doing is wrong.

onClick='openItemDetails(itemToGet.getId())' should be changed to onClick='openItemDetails(<%=itemToGet.getId()%>)'

since itemToGet.getId() is a java object and not a javascript object.

Dawn.

do you know any good tutorials how to use servlets as controllers?

I'm sorry for my question - I'm still learning how to use everything

head first servlets and JSPs are my personal favourite....

Please read this article.