Zip download not working for IE, but works with mozila and crome browsers

Question

The requirement is: we need to download a zip file, and the zip file may contain more than one csv file.
The application is deployed in Linux server and WebLogic 10.3.2. In internet explorer the zip files downloads as a corrupt file which cannot be unzipped. Although in mozilla firefox or chrome I can download the zip file, can unzip and can see the contained csv file as well. Could you please let me know what is wrong in the above code or what modification is needed to make this code workable in Internet Explorer as well?
I have created a fileDownloadActionListener as below:
<af:commandButton text="Ok" id="commandButton1">
<af:fileDownloadActionListener contentType="application/zip"
filename="ExportBid.zip"
method="#{BasePricingBean.exportBid}"/>
</af:commandButton>
In backing bean, I have created a DownloadActionListener method as below:
public void exportBid(javax.faces.context.FacesContext facesContext,
OutputStream outputStream)
BindingContainer bindings = getBindings();
OperationBinding operationBinding =
bindings.getOperationBinding("getType");
Object result = operationBinding.execute();
List selectedType = (List) result;
BufferedInputStream bis = null;
ZipOutputStream zipOut = null;
FileInputStream fis = null;
if (selectedType != null)
try
zipOut = new ZipOutputStream(outputStream);
int BUFFER = 2048;
DCIteratorBinding bindingIterator =
ADFBindingUtils.findIterator("TestROVOIterator");
TestROVOImpl vo =
(TestROVOImpl) bindingIterator.getViewObject();
RowSetIterator iter = vo.createRowSetIterator(null);
int index = 0;
while(index<selectedType.size()){
while (iter.hasNext())
TestROVORowImpl row =
(TestROVORowImpl) iter.next();
String selectedval =
String.valueOf(selectedType.get(index));
String type = row.getCd()+"-"+row.getId();
if (type.equalsIgnoreCase(selectedval))
createCSVFormatFile();
fis = new FileInputStream("tempcsvstorage.csv");
bis = new BufferedInputStream(fis, BUFFER);
zipOut =
(ZipOutputStream) createZip(bis, zipOut, type+".csv",
BUFFER);
iter.reset();
index++;
iter.closeRowSetIterator();
new File("tempcsvstorage.csv").delete();
catch(Exception e){
e.printStackTrace();
finally
try
if (zipOut != null)
zipOut.flush();
bis.close();
fis.close();
zipOut.close();
facesContext.responseComplete();
catch (Exception e)
e.printStackTrace();
else
return;
public void createCSVFormatFile()
FileOutputStream fos = null;
BufferedWriter bw =null;
try
fos = new FileOutputStream("tempcsvstorage.csv");
bw =
new BufferedWriter(new OutputStreamWriter(fos, "UTF-8"));
BindingContainer bindings = getBindings();
OperationBinding operationBinding =
bindings.getOperationBinding("getValueInCSVFormat");
Object result = operationBinding.execute();
StringBuffer[] resultSet = (StringBuffer[]) result;
List error = operationBinding.getErrors();
for (int index = 0; index < resultSet.length; index++)
bw.write(resultSet[index].toString());
bw.newLine();
bw.flush();
bw.close();
fos.close();
catch (UnsupportedEncodingException e)
catch (FileNotFoundException e)
catch (IOException e)
public OutputStream createZip(BufferedInputStream pBis,
ZipOutputStream pZipOut, String fileName,
int pBUFFER)
int BUFFER = pBUFFER;
byte[] buffer = new byte[BUFFER];
try
try
pZipOut.putNextEntry(new ZipEntry(fileName));
int count;
while ((count = pBis.read(buffer, 0, BUFFER)) != -1)
pZipOut.write(buffer, 0, count);
pZipOut.closeEntry();
catch (IOException ioe)
ioe.printStackTrace();
catch (Exception e)
e.printStackTrace();
finally
return pZipOut;
finally
}

Answer 1

Well if it works from one browser it would seem likely that the code you are using to create the file is OK. So I would concentrate on what is different between the browsers, so that will be Mime type management and security.
Your mime type def seems to be OK but it may be the mapping that IE is using that is broken
IE will take the mime type mapping from the registry so it may be worth trying IE from another machine just in case there is something screwy there. Also if you're on Windows 7 make sure that the Zip has not been "blocked" - save it to disk on the client, select the file and choose properties from the context menu - see if it says blocked in the Attributes section.