XML by Example

Writer writer)

throws IOException

{

String value = request.getParameter(id);

if(!XMLUtil.isEmpty(value))

{

writer.write(“ “);

writer.write(id);

writer.write(“=\””);

writer.write(value);

writer.write(“\””);

}

}

/**

* collect buyer data

* @param request the request received from the client

* @param response interface to the client

* @exception IOException error writing the reply

* @exception ServletException error in processing the request

*/

public void doCollectData(HttpServletRequest request,

HttpServletResponse response)

throws ServletException, IOException

{

String productid = request.getParameter(“product”),

merchantid = request.getParameter(“merchant”),

quantity ...