Upload file stop with Unexpected EOF read on the socket Exception

Question

Sometime when I try to upload a file on my remote vps i get this exception (the upload proccess stop in 60%)

06-Jan-2016 11:59:36.801 SEVERE [http-nio-54000-exec-9] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [mvc-dispatcher] in context with path [] threw exception [Request processing failed;
nested exception is org.springframework.web.multipart.MultipartException: Could not parse multipart servlet request;
nested exception is org.apache.commons.fileupload.FileUploadBase$IOFileUploadException: Processing of multipart/form-data request failed. Unexpected EOF read on the socket]
with root cause
 java.io.EOFException: Unexpected EOF read on the socket

and in Google Chrome the connextion is lost like the server is down, i get ERR_CONNECTION_ABORTED

i upload file like this in spring mvc

public void save_file(MultipartFile upfile , String path){

        try {

            File fichier = new File( path ) ;
            byte[] bytes = upfile.getBytes();
            BufferedOutputStream stream = new BufferedOutputStream(new FileOutputStream( fichier ));
            stream.write(bytes);
            stream.close();
            System.out.println( "You successfully uploaded " + upfile.getOriginalFilename() + "!" );

        } catch (Exception e) {
            System.out.println( "You failed to upload " + upfile.getOriginalFilename() + " => " + e.getMessage() ); ;
        }

}

my controller :

@RequestMapping(value = "/administration/upload", method = RequestMethod.POST)
public String Upload_AO_journal(
        @ModelAttribute  UploadForm uploadForm,
                Model map , HttpServletRequest request, HttpSession session ) throws ParseException, UnsupportedEncodingException {

my bean

public class UploadForm {

    ...
    public MultipartFile scan;

So how can solve this problem ?

Answer 1

Have you tried stream?

Jsp code:

<form method="POST" onsubmit="" ACTION="url?${_csrf.parameterName}=${_csrf.token}" ENCTYPE="multipart/form-data">

Controller:

 @RequestMapping(
        value = "url", method = RequestMethod.POST
)
public void uploadFile(
        @RequestParam("file") MultipartFile file
) throws IOException {

 InputStream input = upfile.getInputStream();
 Path path = Paths.get(path);//check path
 OutputStream output = Files.newOutputStream(path);
 IOUtils.copy(in, out); //org.apache.commons.io.IOUtils or you can create IOUtils.copy

}

All that worked for me with spring 4.0 and spring security.

Secondly, you should check if the http connection is timeout. Chrome does not support that configuration. So you can use firefox and follow here http://morgb.blogspot.com.es/2014/05/firefox-29-and-http-response-timeout.html.

Answer 2

Not sure about the getBytes() method on the upfile. A more suitable approach would be to use the InputStream which will manage any size file and will buffer when necessary. Something like:

public void save_file(MultipartFile upfile , String path){

    try {
        File fichier = new File( path ) ;
        BufferedOutputStream stream = new BufferedOutputStream(new FileOutputStream( fichier ));
        InputStream is = upfile.getInputStream();
        byte [] bytes = new byte[1024];
        int sizeRead;
        while ((sizeRead = is.read(bytes,0, 1024)) > 0) {
            stream.write(bytes, 0, sizeRead);
        }
        stream.flush();
        stream.close();
        System.out.println( "You successfully uploaded " + upfile.getOriginalFilename() + "!" );

    } catch (Exception e) {
        System.out.println( "You failed to upload " + upfile.getOriginalFilename() + " => " + e.getMessage() ); ;
    }

}