ajax4jsf can not working with the download files

[icess]

when i add ajax4jsf filter in web.xml file, the download function can not working .

<display-name>Ajax4jsf Filter</display-name>
<filter-name>ajax4jsf</filter-name>
<filter-class>org.ajax4jsf.Filter</filter-class>

<filter-mapping>
<filter-name>ajax4jsf</filter-name>
<servlet-name>Faces Servlet</servlet-name>
REQUEST
FORWARD
INCLUDE
</filter-mapping>
the download code:
String path = "d:\\";
String name = "llk3.exe"; // the download file name . OK!!
FacesContext ctx = FacesContext.getCurrentInstance();
ResponseWriter writer=ctx.getResponseWriter();
HttpServletResponse response = (HttpServletResponse) ctx.getExternalContext().getResponse();
response.reset();
response.setContentType("application/x-download");
response.addHeader("Content-Disposition",
"attachment; filename=" + name + "");
try {
ServletOutputStream os = response.getOutputStream();
FileInputStream fis = new java.io.FileInputStream(path + name);

byte[] b = new byte[1024];
int i = 0;

while ( (i = fis.read(b,0,b.length)) > 0) {
os.write(b, 0, i);
}
fis.close();
os.flush();
os.close();
}
catch(IOException ex){
ex.printStackTrace();
}


if remove the ajax4jsf filter , the code can working .

how i can fix this. any help. thx!

[jmiguel77]

From wich component are you calling this download code ???

I have something similar; in a <a4j:form> i have a commandLink wich actionListener uses a very similar code for downloading a file

the thing is that i use an h:commandLink not an a4j:commandLink

This is my code:

 FacesContext facesContext = FacesContext.getCurrentInstance();
 File file = new File(documentPath);
 BufferedInputStream in = new BufferedInputStream(new FileInputStream(file));

 byte[] buf = new byte[1024];
 long length = file.length();

 if (!facesContext.getResponseComplete()) {
 String fileName = file.getName();
 String contentType = documento.getMimeType();

 HttpServletResponse response = (HttpServletResponse) facesContext.getExternalContext().getResponse();
 response.setContentType(contentType);
 response.setHeader("Content-Disposition","attachment;filename=\"" + fileName + "\"");

 ServletOutputStream out = response.getOutputStream();
 response.setContentLength((int)length);
 while ((in != null) && ((length = in.read(buf)) != -1)) {
 out.write(buf, 0, (int)length);
 }

 in.close();
 out.close();

 facesContext.responseComplete();

Hope it helps

[maksimkaszynski]

I agree with jmiguel77.
You have to call

facesContext.responseComplete();

if you send file from faces action.
Otherwise, you will have components rendered after file-sending code.
Exception you catch is most likely caused by components trying to render via closed response stream.