By chance is the web server google app engine? Even if it isn't there is a
chance your server does not support chunked transfer encoding. If for
example any part of your multipart message is an inputstream part then the
library will set the post using chunked encoding. I got around this in gae
creating my own inputstream. Part that supported getcontentlenght and the
other method that specified that reading the stream did not consume it. (I
returned a copy of the stream when it is requesrted). Sorry if this is a bit
vague, I'm away from the code I wrote at the moment.
On Oct 7, 2008 8:52 PM, "Vinod B" <[EMAIL PROTECTED]> wrote:
hi,
I am sending an http post of a multipart (form-data) as shown below to
an apache web server. It returns an error saying the Content-length
header needs to be specified. Looking at the trace, the Content-Length
header is indeed not being set in the request. I tried getting the
content length using requestContent.getContentLength () only to get
-1.
So any pointers on what to do for this problem?
thanks,
-Vinod
On Aug 19, 4:18 pm, "Justin (Google Employee)" <[EMAIL PROTECTED]>
wrote:
> Just to finish this thread off nicely, here's some code to
usemultipartposts. Again, you need mime4j, httpmime, and Apache Commons
> IO.
>
> import java.io.ByteArrayInputStream;
> import java.io.InputStream;
> import org.apache.http.client.HttpClient;
> import org.apache.http.client.methods.HttpPost;
> import org.apache.http.entity.mime.MultipartEntity;
> import org.apache.http.entity.mime.content.ContentBody;
> import org.apache.http.entity.mime.content.InputStreamBody;
> import org.apache.http.entity.mime.content.StringBody;
> import org.apache.http.impl.client.DefaultHttpClient;
> ...
> HttpClient httpClient = new DefaultHttpClient();
> HttpPost request = new HttpPost("http://www.example.com";);
>
> // we assume 'data' is some byte array representing a jpeg
> InputStream ins = new ByteArrayInputStream(data);
> parts[0] = new InputStreamBody(ins, "image.jpg");
> parts[1] = new StringBody("some bit of information");
> parts[2] = new StringBody("another bit of information");
>
> // create themultipartrequest and add the parts to it
> MultipartEntity requestContent = new MultipartEntity();
> requestContent.addPart("image.jpg", parts[0]);
> requestContent.addPart("data_part1", parts[1]);
> requestContent.addPart("data_part2", parts[2]);
>
> // execute the request
> request.setEntity(requestContent);
> httpClient.execute(request);
>
> The HttpClient execute method will give you a handle to the response.
> From that you can do HttpResponse.getEntity().getContent() which will
> give you an InputStream to read the response. Unfortunately the
> InputStream doesn't produce a meaningful response for
> InputStream.available(). This might be because somewhere along the way
> the Content-Length header seems to be getting lost, but I haven't had
> time to look into this further yet.
>
> Cheers,
> Justin
> Android Team @ Google
>
> On Aug 18, 11:13 pm, code_android_festival_way
>
>
>
> <[EMAIL PROTECTED]> wrote:
> > Thank you Justin for helping me out. It is working pretty fine
> > now. :-)
>
> > Cheers from Germany!
>
> > On 19 Aug., 02:11, "Justin (Google Employee)" <[EMAIL PROTECTED]> wrote:
>
> > > Looks like you also need the Apache Commons IO library which you can
> > > get fromhttp://commons.apache.org/io/.
>
> > > Cheers,
> > > Justin
> > > Android Team @ Google
>
> > > On Aug 18, 3:19 pm, code_android_festival_way
>
> > > <[EMAIL PROTECTED]> wrote:
> > > > So I'm back with a question. I've imported the libraries mentioned
> > > > above and got the following setup:
>
> > > >http://paste.pocoo.org/show/82631/
>
> > > > Now I get an error while executing the POST method with the
> > > > HttpClient. Am I doing sth. wrong or what do I have to change to get
> > > > it working. (the paste above is cutted down to the most important
> > > > parts)
>
> > > > The error message:
>
> > > > Error in ....org.apache.commons.io.ouput.ByteArrayOutputStream
>
> > > > I'm looking forward getting some answers.
>
> > > > Regards!
>
> > > > On 18 Aug., 22:35, code_android_festival_way
>
> > > > <[EMAIL PROTECTED]> wrote:
> > > > > Thank you for your answer Dan.
>
> > > > > I'm looking now how to get the whole thing working. (since I'm not
the
> > > > > best Java developer :) )
>
> > > > > I will come back with the results later on.
>
> > > > > On 18 Aug., 22:26, "Dan Morrill" <[EMAIL PROTECTED]> wrote:
>
> > > > > > To shed a bit more light, the reason the multi-part APIs were
removed is
> > > > > > because those APIs will not be final in the upstream Apache
HTTPClient in
> > > > > > time for Android's schedule for a final 1.0 version. Rather
than ship an
> > > > > > early/incompatible API, we chose to remove it, and rely on other
libraries
> > > > > > as Justin suggested.
>
> > > > > > Note that this applies only to the multi-part APIs: the rest of
the Apache
> > > > > > HTTPClient APIs have been frozen, and so they are "safe" for us
to include.
> > > > > > (Seehttp://
www.nabble.com/-VOTE--RESULT--HttpClient-4.0-API-freeze-td1863...
> > > > > > )
>
> > > > > > - Dan
>
> > > > > > On Mon, Aug 18, 2008 at 1:10 PM, Justin (Google Employee) <
[EMAIL PROTECTED]>wrote:
>
> > > > > > > Note that this has been removed because it was removed from
the Apache
> > > > > > > HttpClient library that we're bundling. What you want to do is
get
> > > > > > > Mime4j (http://james.apache.org/mime4j/index.html) and
HttpMime
> > > > > > > (
http://hc.apache.org/httpcomponents-client/httpmime/index.html) and
> > > > > > > include these libraries in your Android project. From there,
the usage
> > > > > > > ofmultipartrequests is pretty intuitive.
>
> > > > > > > Cheers,
> > > > > > > Justin
> > > > > > > Android Team @ Google
>
> > > > > > > On Aug 18, 1:06 pm, code_android_festival_way
> > > > > > > <[EMAIL PROTECTED]> wrote:
> > > > > > > > Hello guys.
>
> > > > > > > > I've seen that themultipartmethod has been removed in 0.9.
I'm
> > > > > > > > wondering now how to achieve these messages now.
>
> > > > > > > > At the moment I'm having something like:
>
> > > > > > > >http://paste.pocoo.org/show/82610/
>
> > > > > > > > Is there an example how to do that in the 0.9 release? I've
looked at
> > > > > > > > the Mime4j library but didn't get the point how this works.
>
> > > > > > > > It would be very nice if someone could provide an example
for me.
>
> > > > > > > > Regards!- Hide quoted text -
>
> - Show quoted text -
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