On Thu, Jan 12, 2012 at 1:19 PM, Poitras Christian
<
Christian.Poitras <at> ircm.qc.ca> wrote:
> Hi,
>
> I've managed to create a workarounf for this a while ago.
> I thought about adding it to StripesStuff project, but it would be better if it was in Stripes itself.
> I think it would be easy to change it so that we won't need to add a "[0]" at the end of the name element.
>
> In the ActionBean:
> <at> Validate
> public List<FileBean> files;
>
> In the JSP:
> <stripes-dynamic:file id="files" name="files[0]" multiple="multiple"/>
>
> You need a new net.sourceforge.stripes.controller.multipart.CommonsMultipartWrapper.
> <at> SuppressWarnings("unchecked")
> public void build(HttpServletRequest request, File tempDir, long maxPostSize)
> throws IOException, FileUploadLimitExceededException {
> String charset;
> Map<String,FileItem> files = new HashMap<String,FileItem>();
> Map<String,String[]> parameters = new HashMap<String, String[]>();
>
> try {
> charset = request.getCharacterEncoding();
> DiskFileItemFactory factory = new DiskFileItemFactory();
> factory.setRepository(tempDir);
> ServletFileUpload upload = new ServletFileUpload(factory);
> upload.setSizeMax(maxPostSize);
>
> List<FileItem> items = upload.parseRequest(request);
> Map<String,List<String>> params = new HashMap<String, List<String>>();
>
> for (FileItem item : items) {
> // If it's a form field, add the string value to the list
> if (item.isFormField()) {
> List<String> values = params.get(item.getFieldName());
> if (values == null) {
> values = new ArrayList<String>();
> params.put(item.getFieldName(), values);
> }
> values.add(charset == null ? item.getString() : item.getString(charset));
> }
> // Else store the file param
> else {
> processFile(item, files);
> }
> }
>
> // Now convert them down into the usual map of String->String[]
> for (Map.Entry<String,List<String>> entry : params.entrySet()) {
> List<String> values = entry.getValue();
> parameters.put(entry.getKey(), values.toArray(new String[values.size()]));
> }
> }
> catch (FileUploadBase.SizeLimitExceededException slee) {
> throw new FileUploadLimitExceededException(maxPostSize, slee.getActualSize());
> }
> catch (FileUploadException fue) {
> IOException ioe = new IOException("Could not parse and cache file upload data.");
> ioe.initCause(fue);
> throw ioe;
> }
>
> try {
> Field charsetField = net.sourceforge.stripes.controller.multipart.CommonsMultipartWrapper.class.getDeclaredField("charset");
> if (!charsetField.isAccessible()) {
> charsetField.setAccessible(true);
> }
> charsetField.set(this, charset);
> Field filesField = net.sourceforge.stripes.controller.multipart.CommonsMultipartWrapper.class.getDeclaredField("files");
> if (!filesField.isAccessible()) {
> filesField.setAccessible(true);
> }
> filesField.set(this, files);
> Field parametersField = net.sourceforge.stripes.controller.multipart.CommonsMultipartWrapper.class.getDeclaredField("parameters");
> if (!parametersField.isAccessible()) {
> parametersField.setAccessible(true);
> }
> parametersField.set(this, parameters);
> } catch (NoSuchFieldException e) {
> throw new RuntimeException("Could not set fields in super class", e);
> } catch (IllegalAccessException e) {
> throw new RuntimeException("Could not set fields in super class", e);
> }
> }
> private void processFile(FileItem item, Map<String,FileItem> files) {
> if (item.getFieldName().endsWith("[0]")
> && files.containsKey(item.getFieldName())) {
> String baseName = item.getFieldName().substring(0, item.getFieldName().length() - 3);
> int index = 0;
> while (files.containsKey(baseName + "[" + index + "]")) {
> index++;
> }
> log.trace("renaming file parameter " + item.getFieldName() + " to " + baseName + "[" + index + "]");
> files.put(baseName + "[" + index + "]", item);
> } else {
> files.put(item.getFieldName(), item);
> }
> }
>
> Christian
>
> -----Message d'origine-----
> De : Mike McNally [mailto:
emmecinque-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org]
> Envoyé : January-12-12 12:25 PM
> À : Stripes Users List
> Objet : [Stripes-users] File inputs with the new "multiple" attribute
>
> In newer browsers, it's possible to give input elements of type "file"
> the "multiple" attribute. That tells the browser to allow more than
> one file to be selected in the file chooser. That, in turn, results in
> a multi-valued request parameter.
>
> When I try this, however, it doesn't work, a situation which I think
> is documented on the wiki. However that documentation was probably
> written before the advent of the "multiple" attribute, so the
> painfulness of the situation was not as evident then (and thus the
> indexed parameter name solution seemed quite reasonable). There's no
> way to fix this however; the browser is completely in charge of
> preparing the POST data.
>
> My question is, what is it that would have to be fixed in order to
> support "multiple" file parameters? The web is moving pretty fast
> nowadays
>
>
> --
> Turtle, turtle, on the ground,
> Pink and shiny, turn around.
>
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Pink and shiny, turn around.
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