Actually, one minor correction. In the second case, the exception stack is actually slightly different. It is:
The mpEntity isRepeatable = true Exception in thread "main" java.lang.UnsupportedOperationException: Multipart form entity does not implement #getContent() at org.apache.http.entity.mime.MultipartFormEntity.getContent(MultipartFormEntity.java:92) at org.apache.http.entity.HttpEntityWrapper.getContent(HttpEntityWrapper.java:84) at org.apache.http.entity.BufferedHttpEntity.getContent(BufferedHttpEntity.java:83) at Test.main(Test.java:440) So, in this case the exception happens because the call is being passed through. In the stack trace from the other case, the exception seems to happen when the BufferedHttpEntity tries to buffer the data. Does this mean that there is no way to send a Multipart entity using the HttpAsyncClient? ----- Original Message ----- From: "Harold Rosenberg" <[email protected]> To: [email protected] Sent: Friday, November 8, 2013 12:38:10 PM Subject: HttpAsyncClient with MultipartEnityBuilder I am having trouble sending an HttpEntity created using the MultipartEntityBuilder on the HttpAsyncClient. Based on this exchange from the httpclient-users mailing list: http://mail-archives.apache.org/mod_mbox/hc-httpclient-users/201206.mbox/%3c1339240012.2405.12.camel@ubuntu%3e I thought the solution was to wrap the HttpEntity in a BufferedHttpEntity, but that doesn't help. The javadoc for the BufferedHttpEntity says "If the wrapped entity is repeatable itself, calls are passed through. If the wrapped entity is not repeatable, the content is read into a buffer once and provided from there as often as required.". However, even if I create the HttpEntity (using MultipartEntityBuilder) in such a way that it reports itself to not be repeatable (isRepeatable() returns false), calls to getContent() throw an UnsupportedOperationException. The stack trace shows that it is still passing the call to getContent through to the MultipartFormEntity. Here is the code that I am using to test this: HttpEntity mpEntity = MultipartEntityBuilder.create() .addPart("image", new InputStreamBody(imageInputStream, ContentType.create("image/jpeg"))) .build(); System.out.println("The mpEntity isRepeatable = " + mpEntity.isRepeatable()); BufferedHttpEntity bufferedMpEntity = new BufferedHttpEntity(mpEntity); bufferedMpEntity.getContent(); Which gives the following output: The mpEntity isRepeatable = false Exception in thread "main" java.lang.UnsupportedOperationException: Multipart form entity does not implement #getContent() at org.apache.http.entity.mime.MultipartFormEntity.getContent(MultipartFormEntity.java:92) at org.apache.http.util.EntityUtils.toByteArray(EntityUtils.java:122) at org.apache.http.entity.BufferedHttpEntity.<init>(BufferedHttpEntity.java:63) at Test.main(Test.java:440) I actually want to create the HttpEntity this way: HttpEntity mpEntity = MultipartEntityBuilder.create() .addPart("image", new ByteArrayBody(imageAsBytes, ContentType.create("image/jpeg"), "itemImage.jpg")) .build(); This gives the same exception as above. Since in this case mpEnity.isRepeatable() returns true, I had thought this was the cause of the exception. However that seems not to be the case. Is there something else that I need to do in order to send a multipart entity using the HttpAsyncClient? Thanks, Hal
