Java Community | Help. Code. Learn.•6mo ago

Switch from commons-fileupload to commons-fileupload-jakarta-servlet6

I need to change my fileupload-integration to the jakarta6-version. The old code is

        resp.setHeader("Transfer-Encoding", "chunked");
        byte timeout = parseTimeoutParameter(req);
        int port = parsePortParameter(req);
        long expLen = Long.valueOf(req.getHeader(HttpHeaders.CONTENT_LENGTH));
        ServletFileUpload upload = new ServletFileUpload();
        ServletOutputStream servletOut = resp.getOutputStream();
            FileItemIterator itemIterator = upload.getItemIterator(req);
            while (itemIterator.hasNext()) {
                FileItemStream streamItem = itemIterator.next();
                if (streamItem.getFieldName().equals("ova")) {
                    String nameWithoutQuotas = streamItem.getName();
                    nameWithoutQuotas = nameWithoutQuotas.substring(0, nameWithoutQuotas.lastIndexOf('.'));
                    File tf = File.createTempFile("ova-rm", ".ova");
                    FileOutputStream fos = new FileOutputStream(tf);
                    copy(streamItem.openStream(), fos, servletOut, 1024 * 8, expLen);
                    fos.close();
                    try {
                        app.getBean(OVAImporter.class).importOVA(tf, nameWithoutQuotas, timeout, port);
                    } catch (Exception e) {
                        throw new ServletException(e);
                    }
                }
            }

        resp.setHeader("Transfer-Encoding", "chunked");
        byte timeout = parseTimeoutParameter(req);
        int port = parsePortParameter(req);
        long expLen = Long.valueOf(req.getHeader(HttpHeaders.CONTENT_LENGTH));
        ServletFileUpload upload = new ServletFileUpload();
        ServletOutputStream servletOut = resp.getOutputStream();
            FileItemIterator itemIterator = upload.getItemIterator(req);
            while (itemIterator.hasNext()) {
                FileItemStream streamItem = itemIterator.next();
                if (streamItem.getFieldName().equals("ova")) {
                    String nameWithoutQuotas = streamItem.getName();
                    nameWithoutQuotas = nameWithoutQuotas.substring(0, nameWithoutQuotas.lastIndexOf('.'));
                    File tf = File.createTempFile("ova-rm", ".ova");
                    FileOutputStream fos = new FileOutputStream(tf);
                    copy(streamItem.openStream(), fos, servletOut, 1024 * 8, expLen);
                    fos.close();
                    try {
                        app.getBean(OVAImporter.class).importOVA(tf, nameWithoutQuotas, timeout, port);
                    } catch (Exception e) {
                        throw new ServletException(e);
                    }
                }
            }

. Using the new version I have this constructor: new JakartaServletFileUpload<FileItem<I>, FileItemFactory<I>>();. How to use the constructor properly?

17 Replies

JavaBot•6mo ago

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dan1st•6mo ago

https://commons.apache.org/proper/commons-fileupload/using.html

Peter RaderOP•6mo ago

Hm, can you be more specific?

dan1st•6mo ago

Well that page has examples for using that constructor I think the first code example is pretty much what you want

Peter RaderOP•6mo ago

I found the example for constructor JakartaServletDiskFileUpload but I need JakartaServletFileUpload (without disk in the name).

dan1st•6mo ago

Just use your own ItemFactory? And for that you need to decide what kind of FileItem you want

Peter RaderOP•6mo ago

You mean FileItemFactory? I think there must be an easier way. To create my own factory for simple upload is a overkill.

dan1st•6mo ago

If you want a FileItemFactory, use that but idk whether you want one or whether you want something custom if you want a FileItemFactory, you can probably also use JakartaServletDiskFileUpload?

Peter RaderOP•6mo ago

Why should I use JakartaServletDiskFileUpload instead of JakartaServletFileUpload?

dan1st•6mo ago

If you want to save it to disk, that already has some logic implemented?

Peter RaderOP•6mo ago

I dont like to save all. I only like to save the .ova file.

dan1st•6mo ago

Is the no-args constructor not applicable?

Peter RaderOP•6mo ago

and only <?> generics?

dan1st•6mo ago

I think if you want to use something that doesn't save it on disk, you either need the no-args constructor or a custom factory start with them and change them as necessary

dan1st•6mo ago

https://www.baeldung.com/spring-apache-file-upload

Baeldung

Spring and Apache FileUpload | Baeldung

A quick and practical guide to using Apache FileUpload with Spring.

dan1st•6mo ago

section 4. might be interesting

JavaBot•6mo ago

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Switch from commons-fileupload to commons-fileupload-jakarta-servlet6