01-24-07 12:51 PM
Hello
I need to develop a portlet from which I can export data to Excel. The data
keept in a HashMap are presented in a table format, when portlet in VIEW mo
de. When pressing an "Export" button I would like to be presented with a pop
up asking if I want to Ope
n / Save the Excel file or Cancel the operation.
The Java code I am using in a JSP is :
<%@ page import="java.util.*" %>
<%@ page import="java.io.*" %>
<%
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-disposition",
"attachment; filename=tabella11.xls");
// attachment - since we don't want to open
// it in the browser, but
// with MS-Excel, and set the
// default file name to use.
response.setHeader("CacheControl", "no-cache");
response.setHeader("pragma","no-cache");
response.setHeader("Expires","-1");
StringBuffer recordString = new StringBuffer();
recordString.append("<HTML><body><table>");
recordString.append("<tr><td>hello</td></tr>");
recordString.append("</table>");
String str = recordString.toString();
PrintWriter pw=response.getWriter();
pw.println(str);
%>
But unfortunatelly I get an exception:
2007.01.23 16:03:50.906 E com.ibm.wps.services.dispatcher.DispatcherServiceI
mpl handleRequest
java.lang.IllegalStateException: Writer already obtained
Can anyone help me please with some piece of code or an workaround for solvi
ng this issue?
Thanks in advance.
Otilia
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