Upgrade from 3.1 to 4.5 - Multipart form entity related exception

[Karthik R]

Hi,




We want to use the HttpAsyncClient and NIO so that we can handle more requests 
with fewer threads. 

I am tasked with migrating from HttpComponents 3.1 to 4.5. The new API is very 
different from the earlier one and I need some help with the same.



ByteArrayPartSource horA = new ByteArrayPartSource("data", 
data.toString().getBytes("UTF-8")); 




FilePart p1 = new FilePart("data", horA); 

StringPart encodingPart = new StringPart("encoded", "" + _encode); 



StringPart contentPart = new StringPart("content-type", "text/xml"); 



Part[] partes = { p1, encodingPart, contentPart }; 

post.setRequestEntity(new MultipartRequestEntity(partes, post.getParams()));



I rewrote the whole thing above as:



HttpEntity postEntity = MultipartEntityBuilder.create() 


      .addTextBody("content-type", contentType) 

      .addTextBody("encoded", ""+true) 

      .addBinaryBody("data", data.toString().getBytes("UTF-8")) 

      .build(); 



post.setEntity(postEntity);



This results in UnsupportedOperationException:Multipart form entity does not 
implement #getContent() 




I read similar posts on this list but didn't understand what I should do. I 
don't want to write copy content into memory/buffer. What is the right way to 
write this using 4.5 and HttpAsyncClient? Any pointers will be really 
appreciated. 



Thanks!