Hello, I know this topic has been discussed in a few threads. I have
attempted to ask my questions in those but for some reason they are
not posting, so I had to create this new one. I read documentation and
other posts but still confused on how to do this. File download is
very simple in normal web app, but having trouble in GWT. Can someone
please help me with what I have written here?
This is code for client side :
[CODE]
private void exportToExcel() {
final int STATUS_CODE_OK = 200;
final String url = "/exportExcel";
RequestBuilder builder = new RequestBuilder(RequestBuilder.GET,
url);
try {
Request response = builder.sendRequest(null, new RequestCallback
() {
public void onError(Request request, Throwable exception) {
// TODO:
}
public void onResponseReceived(Request request, Response
response) {
// TODO:
}
});
} catch (RequestException e) {
// TODO:
}
}
[/CODE]
This is in the ***.gwt.xml file:
[CODE]
<inherits name="com.google.gwt.http.HTTP" />
<servlet path="/exportExcel"
class="com.myweb.server.ExportExcelServlet" />
[/CODE]
This is my servlet:
[CODE]
package com.myweb.server;
import java.io.ByteArrayInputStream; ...
public class ExportExcelServlet extends HttpServlet {
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("application/download");
response.setHeader("Content-
Disposition","attachment;filename=temp.csv");
try {
StringBuffer sb = generateCsvFileBuffer();
InputStream in = new
ByteArrayInputStream(sb.toString().getBytes
("UTF-8"));
ServletOutputStream out = response.getOutputStream();
byte[] outputByte = new byte[4096];
//copy binary contect to output stream
while(in.read(outputByte, 0, 4096) != -1)
{
out.write(outputByte, 0, 4096);
}
in.close();
out.flush();
out.close();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
doGet(request,response);
}
private static StringBuffer generateCsvFileBuffer()
{
StringBuffer writer = new StringBuffer();
writer.append("DisplayName");
writer.append(',');
writer.append("Age");
writer.append('\n');
writer.append("your name");
writer.append(',');
writer.append("30");
writer.append('\n');
return writer;
}
}
[/CODE]
At first I was having no errors generated but in the browser no
download dialog would pop up, and nothing happened.
I changed something...not sure what now, and getting runtime errors.
[ERROR] Unable to find 'exportExcel.gwt.xml' on your classpath; could
be a typo, or maybe you forgot to include a classpath entry for
source?
My entire app is written in GWT, so I dont have a web.xml file
I am very stuck any help would be extreemly appreciated
Thanks!
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Google Web Toolkit" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/Google-Web-Toolkit?hl=en
-~----------~----~----~----~------~----~------~--~---
