Java Apache HttpClient error uploading files

Question

I want to upload a file using HttpClient 4.3.1. I need to add to form multipart an inputstream (to control upload progress.) instead of a File object. This is my code:

        byte[] dump = ...;

        HttpClient httpclient = new DefaultHttpClient();
        HttpPost httppost = new HttpPost(SENDLOG_URL);      

        MultipartEntityBuilder meb = MultipartEntityBuilder.create();
        meb.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
        // THIS WORKS!!  meb.addBinaryBody("log", new File("C:\\temp.zip"), ContentType.APPLICATION_OCTET_STREAM,"log.zip");
        InputStream is=new FileInputStream("C:\\temp.zip")
        meb.addBinaryBody("log", is, ContentType.DEFAULT_BINARY, "log.zip");            
        httppost.setEntity(meb.build());
        HttpResponse resp=httpclient.execute(httppost);
        is.close();

Using the method MultipartEntityBuilder.addBinaryBody(Strin,File) it works, but using MultipartEntityBuilder.addBinaryBody(Strin,InputStream) it doesn't work.

The java client doesn't throw any error, but this is the answer of remote server (Apache):

HTTP/1.1 400 Bad Request [Date: Thu, 28 Nov 2013 09:46:08 GMT, Server: Apache/2.4.6 (Unix) mod_fcgid/2.3.7, Content-Length: 226, Connection: close, Content-Type: text/html; charset=iso-8859-1]

Why this strange behaviour between new File() and new FileInputStream()?

Do you mean the FileOutputStream? You really can ignore this, it is just to write to a temp file. — Tobia
– Tobia, Commented Nov 28, 2013 at 10:02
Oops sorry..... can you create a instance of input stream and pass it on to addBinaryBody method and once you receive the response close the connection using the instance — Karthik Prasad
– Karthik Prasad, Commented Nov 28, 2013 at 10:29

ok2c · Accepted Answer · 2013-11-28 10:46:59Z

3

That is all very simple. In the former case the total length of the multipart entity content can be calculated given the length of all its parts is known. Such entity can be enclosed in a request delimited by a Content-Length header. In the latter case the total entity length cannot be determined and the request is transmitted with chunk coding. Apparently some server side scripts with limited protocol compliance cannot handle requests without a Content-Length header.

answered Nov 28, 2013 at 10:46

ok2c

27.9k5 gold badges66 silver badges74 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Tobia Over a year ago

I know the content length (this inputstream is a filestream), can force it?

Tobia Over a year ago

I solved extending org.apache.http.entity.mime.content.InputStreamBody changing public long getContentLength() method. Thank you.

ulab Over a year ago

any solution other than extending InputStreamBody ?

Collectives™ on Stack Overflow

Java Apache HttpClient error uploading files

1 Answer 1

3 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related