I have a simple servlet in my GWT application that creates a Excel
sheet (Using JXL library) and writes the outputstream to the response.
But this ends up in the following exception.
The result is same when I use Window.open/RequestBuilder and even when
I do form submit.
I am using GWT/Apps Engine plugin for Eclipse 3.5.
Appreciate any help towards this.
java.io.IOException: Closed
at org.mortbay.jetty.AbstractGenerator$Output.write
(AbstractGenerator.java:595)
at com.test.server.ReportServlet.generateXLS(ReportServlet.java:147)
at com.test.server.ReportServlet.doPost(ReportServlet.java:47)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:713)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
487)
Here is my come
public class ReportServlet extends HttpServlet {
public void generateXLS(HttpServletRequest req, HttpServletResponse
response) throws ServletException, IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
WritableWorkbook workbook = Workbook.createWorkbook(baos);
WritableSheet sheet = workbook.createSheet("Leave
Report", 0);
Label idLabel = new Label(0, 0, "ID");
sheet.addCell(idLabel);
response.setContentType("application/vnd.ms-excel");
response.setHeader("Expires", "0");
response.setHeader("Cache-Control", "no-cache");
response.setHeader("Pragma", "public");
String fileName = "LeaveReport.xls";
response.setHeader("Content-Disposition","attachment;
filename=\""
+ fileName +"\"");
//response.setCharacterEncoding("utf-8");
//response.setHeader("Transfer-Encoding", "Chunked");
response.setContentLength(baos.size());
//response.setBufferSize(baos.size());
//response.flushBuffer();
ServletOutputStream out = response.getOutputStream();
//DataOutputStream out = new DataOutputStream
(response.getOutputStream());
//baos.writeTo(out);
byte[] outs = baos.toByteArray();
for (int i = 0; i < outs.length; i++) {
System.out.println(i);
out.write(outs[i]);
}
out.flush();
out.close();
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