CODEWITHSUNDEEP
javafile-uploadapache-commons
Andrey Minogin
Andrey Minogin

Reputation: 4617

Get post parameter before upload

When I use Commons FileUpload the method parseRequest(request) uploads files and also reads additional post parameters. So I can get parameter values only after uploading the files. The problem is that I need those parameter values before uploading the files (one of the parameters is upload_path).

Is there any way to get post parameters first from multipart content and then start uploading to the correct folder?

(request.getParameter(name) will return null for multipart content).

Thanks in advance!

Upvotes: 1

Views: 1273

Answers (1)

stacker
stacker

Reputation: 68942

This works for me, in first pass I check all parameters, after that I take the non form fields for download.

ServletFileUpload upload = new ServletFileUpload();
FileItemIterator iter = upload.getItemIterator( request );

while ( iter.hasNext() ) {
    FileItemStream item = iter.next();
    String name = item.getFieldName();
    InputStream stream = item.openStream();

    if ( item.isFormField() ) {
        byte[] buffer = new byte[ 128 ];
        int len = stream.read( buffer );
        String value = new String( buffer, 0,len );
        if ( name.equals( "name" ) ) {
            filename  = value;
        }
        System.err.println( "Form field " + name + " with value " + value + " detected." );
        stream.close();
    }
}

Upvotes: 1

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