Hello everybody,
I’m very new to developing REST services with CXF and now I’ve run into
a problem involving JAXB unmarshalling from multiparts.
For test purposes I use a very simple bean for the data transfer:
@XmlRootElement
public class WrappedString {
private String testString;
public String getTestString() {
return testString;
}
public void setTestString(String testString) {
this.testString = testString;
}
}
This is the method on the server:
@POST
@Path("test")
@Consumes("multipart/mixed")
@Produces("text/plain")
public String unpackWrappedString(MultipartBody body) {
Attachment rootAttachment = body.getRootAttachment();
if (rootAttachment == null) {
LOGGER.error("No root attachment found");
}
Object content = rootAttachment.getObject();
if (content == null) {
// This is what happens!
LOGGER.error("Couldn't get an object from the root attachment");
}
WrappedString wrappedString = null;
try {
wrappedString = (WrappedString) content;
} catch (ClassCastException e) {
LOGGER.error("Couldn't cast to WrappedString");
}
return wrappedString.getTestString();
}
This is the test call:
@Test
public void testUnpackWrappedString() {
final String testString = "Hello world";
WebClient client = WebClient.create(BASE_URL);
WrappedString wrappedString = new WrappedString();
wrappedString.setTestString(testString);
MultipartBody body = new MultipartBody(new Attachment("root",
"text/xml", wrappedString));
String responseString = client.path("test").type("multipart/mixed")
.accept("text/plain").post(body, String.class);
Assert.assertEquals(testString, responseString);
}
This is the HTTP message sent:
POST /test-service/test HTTP/1.1
Content-Type: multipart/mixed; type="text/xml";
boundary="uuid:e4e3a133-4fd2-4f9a-a657-1bece83d19e1";
start="<root>"; start-info="text/xml"
Accept: text/plain
User-Agent: Apache CXF 2.2.9
Cache-Control: no-cache
Pragma: no-cache
Host: localhost:8084
Connection: keep-alive
Content-Length: 297
--uuid:e4e3a133-4fd2-4f9a-a657-1bece83d19e1
Content-Type: text/xml
Content-Transfer-Encoding: binary
Content-ID: <root>
<?xml version="1.0" encoding="UTF-8" standalone="yes"?><wrappedString>
<testString>Hello world</testString></wrappedString>
--uuid:e4e3a133-4fd2-4f9a-a657-1bece83d19e1--
As mentioned in the server code above what happens is that the method
getObject() returns null instead of the WrappedString object. This
approach works fine if the attachment contains e.g. a File object (not
using JAXB obviously). Also unmarshalling a WrappedString object works
if it’s the sole HTTP body, i.e. not inside a multipart attachment.
I would be grateful for any help in this matter.
The CXF version I’m using is 2.2.9, the JDK version is 1.6.0_20, the
service is deployed on a Tomcat 6.0.26.
Best regards,
Bernhard
