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From sebb <seb...@gmail.com>
Subject Re: Posting "large" file with PostMethod
Date Wed, 20 Apr 2011 11:09:55 GMT
On 20 April 2011 08:56, kevin_vdb6 <kevin.vandenbempt@student.kdg.be> wrote:
>
> Hello,
>
> I am develloping a systemtray application that sends parameters of a record
> to a servlet, however this is working perfectly with files smaller than 1mb
> but if i try to send larger files it crashes.

Unless you actually provide details of the "crash", it make debugging
much harder.

> Im using Swing as client. (the
> problem is at the Attachment parameter) I've been searching a few days for
> this but i couldn't find an answer, any help would be highly appreciated!
>
> Code client:
>   ActionListener sendTask = new ActionListener() {
>        @Override
>        public void actionPerformed(ActionEvent actionEvent) {
>            String request = "http://localhost:8080/rest/addTask";
>
>            HttpClient client = new HttpClient();
>            PostMethod method = new PostMethod(request);
>
>            //conversion blob
>            File file = new File(txtUpload.getText());
>            try {
>                byte[] blob = getBytesFromFile(file);
>                String blobje = new String(blob,"ISO-8859-1");
>
>                method.addParameter("description",
> txtOmschrijving.getText());
>                method.addParameter("attachment", blobje);
>                method.addParameter("contentType", new
> MimetypesFileTypeMap().getContentType(file));
>                method.addParameter("fileName",file.getName());
>            } catch (IOException e) {
>                e.printStackTrace();  //To change body of catch statement
> use File | Settings | File Templates.
>            }
>
>
>            // Send POST request
>            try {
>                int statusCode = client.executeMethod(method);
>                System.out.println(statusCode);
>
>                InputStream rstream = null;
>
>                rstream = method.getResponseBodyAsStream();
>
>                BufferedReader br = new BufferedReader(new
> InputStreamReader(rstream));
>
>                String line;
>
>                while ((line = br.readLine()) != null) {
>                    System.out.println(line);
>                }
>
>
>
>                br.close();
>            } catch (Exception e) {
>                e.printStackTrace();
>            }
>
>            txtOmschrijving.setText("");
>            txtUpload.setText("");
>
>        }
>    };
>
>
>    public static byte[] getBytesFromFile(File file) throws IOException {
>    InputStream is = new FileInputStream(file);
>
>    // Get the size of the file
>    long length = file.length();
>
>    // You cannot create an array using a long type.
>    // It needs to be an int type.
>    // Before converting to an int type, check
>    // to ensure that file is not larger than Integer.MAX_VALUE.
>    if (length > Integer.MAX_VALUE) {
>        // File is too large
>    }
>
>    // Create the byte array to hold the data
>    byte[] bytes = new byte[(int)length];
>
>    // Read in the bytes
>    int offset = 0;
>    int numRead = 0;
>    while (offset < bytes.length
>           && (numRead=is.read(bytes, offset, bytes.length-offset)) >=
0) {
>        offset += numRead;
>    }
>
>    // Ensure all the bytes have been read in
>    if (offset < bytes.length) {
>        throw new IOException("Could not completely read file
> "+file.getName());
>    }
>
>    // Close the input stream and return bytes
>    is.close();
>    return bytes;
> }
>
>
>
>
> Code on servlet:
> public class AddTaskService extends HttpServlet {
>    public void doPost(HttpServletRequest request, HttpServletResponse
> response)
>            throws ServletException, IOException {
>
>        String description = request.getParameter("description");
>        String attachment = request.getParameter("attachment");
>        String fileName = request.getParameter("fileName");
>        String contentType = request.getParameter("contentType");
>
>        //parsing String to Blob
>        byte[] blobbinarie = attachment.getBytes("ISO-8859-1");
>        InputStream stream = new ByteArrayInputStream(blobbinarie);
>
>
>        Blob blobje = Hibernate.createBlob(stream);
>
>        //getting TaskController
>        ServletContext context = getServletContext();
>        WebApplicationContext applicationContext =
> WebApplicationContextUtils.getWebApplicationContext(context);
>        TaskController taskController = (TaskController)
> applicationContext.getBean("taskController");
>        Date today = Calendar.getInstance().getTime();
>        Task task = new Task(description,blobje,today,contentType,fileName);
>
>        //try to add new Task into Database
>        taskController.createTask(task);
>
>    }
> }
>
>
> Thanks in advance,
> Kevin
> --
> View this message in context: http://old.nabble.com/Posting-%22large%22-file-with-PostMethod-tp31439133p31439133.html
> Sent from the HttpClient-User mailing list archive at Nabble.com.
>
>
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