Hi folks.
I am developing a RESTful client to communicate with an existing service
using cxf 2.5.0. At first everything was quite straight foward and working,
but now I am struggling on sending a multipart request, containing one file
and one text field: On service site all data is received, but I cannot set
the content disposition for both elements, which is necessary as the service
can only detect multipart fields by their content disposition.
My code so far:
client = WebClient.create("http://my_server";);
client.header("Authorization", authorizationHeader);
client.path("/multipart_path");
client.accept(MediaType.APPLICATION_JSON);
client.type(MediaType.MULTIPART_FORM_DATA_TYPE);
ContentDisposition cd = new ContentDisposition("form-data; name=\"file\";
filename=\"image.png\"");
List<Attachment> atts = new LinkedList<Attachment>();
atts.add(new Attachment("textfield", MediaType.TEXT_PLAIN,
"my_textfield_value"));
atts.add(new Attachment("file", new FileInputStream(uploadFile), cd));
MultipartBody body = new MultipartBody(atts);
client.post(body, String.class);
This is what the service is receiving:
MIME Multipart Media Encapsulation, Type: multipart/form-data, Boundary:
"uuid:28129548-3b28-4559-ac64-7d135c3c7705"
Type: multipart/form-data
Content-Type: text/plain
Content-Transfer-Encoding: binary
Content-ID: <textfield>
my_textfield_value
Content-Type: application/octet-stream
Content-Transfer-Encoding: binary
Content-ID: <file>
Content-Disposition: form-data; name="file"; filename="image.png"
data_of_file
The problem is the first attachment, which is a simple text field, but is
missing the Content-Disposition. Setting the Content-Disposition of the
field manually leads to exceptions. The code changes:
ContentDisposition cd = new ContentDisposition("form-data;
name=\"textfield\"");
ContentDisposition cd2 = new ContentDisposition("form-data; name=\"file\";
filename=\"image.png\"");
List<Attachment> atts = new LinkedList<Attachment>();
atts.add(new Attachment("textfield", "my_textfield_value", cd));
atts.add(new Attachment("file", new FileInputStream(uploadFile), cd2));
The exception:
org.apache.cxf.interceptor.Fault: .Problem with writing the request message,
class : class org.apache.cxf.jaxrs.ext.multipart.MultipartBody, ContentType
: multipart/form-data.
Any ideas on how to solve this problem? The service is okay, and can be fed
with this data from a web form, and also with a small client developed using
jersey instead of cxf.
Thanks alot.
Bye, Daniel
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