Downloading data in PDF, XLS, WORD format in GWT

hree step are needed to perform operation to download the data in PDF, XLS, WORD format in GWT
Step -1 :-
At client side set the url from where we are going to download the data with file name as given below.

String url = GWT.getModuleBaseURL() + "downloadService?fileInfo1=" + "SiddhuFile";
Window.open( url, "_blank", "status=0,toolbar=0,menubar=0,location=0");


Step -2 :-

Make sure to enter the servlet mapping in web.xml


downloadService
com.test.pdf.server.DownloadServlet

downloadService
/testpdffileproject/downloadService


Step -3 :- Create a servlet that will do the functinality of downloading the data from server side to client side.

protected void doGet( HttpServletRequest req, HttpServletResponse resp ) throws ServletException, IOException
{

String fileName = req.getParameter( "fileInfo1" );
ServletOutputStream out = resp.getOutputStream(); 
int BUFFER = 1024 * 100;
String reportContents = getServletContext().getServerInfo();
//for PDF
resp.setContentType("application/pdf");
resp.setHeader("Content-Disposition", "attachment;filename=" + fileName + ".pdf");

//for CVS files
//resp.setContentType("text/csv"); 
//resp.setHeader("Content-Disposition", "attachment; filename="+ fileName + ".csv"); 
   
//for Word Document
//resp.setContentType("text/doc"); 
//resp.setHeader("Content-Disposition", "attachment; filename="+ fileName + ".doc"); 

resp.setContentLength( Long.valueOf( reportContents.length() ).intValue()); 
resp.setBufferSize(BUFFER);
out.write(reportContents.getBytes()); 
out.flush(); 
out.close(); 


}

Note:- Code to download the data in xls and word is also attached. Please uncomment it if you want to download the data in specific format.