Nifi multipart form
You could use ExecuteGroovyScript
processor with the following code to build multipart/form-data:
@Grab(group='org.apache.httpcomponents', module='httpmime', version='4.5.9')
import org.apache.http.entity.mime.MultipartEntityBuilder
import org.apache.http.entity.ContentType
def ff = session.get()
if(!ff)return
def multipart
ff.write{streamIn, streamOut->
multipart = MultipartEntityBuilder.create()
//specify multipart entries here
.addTextBody( "username", ff.filename ) //get from flowfile attribute "filename"
.addTextBody( "secret", new File("./README").getText("UTF-8") ) //add text body from file
.addBinaryBody( "avatar", streamIn, ContentType.DEFAULT_BINARY, ff.filename ) //add flowfile content as binary body
.build()
multipart.writeTo(streamOut)
}
//set the `mime.type` attribute to be used as `Content-Type` in InvokeHTTP
ff."mime.type" = multipart.getContentType().getValue()
REL_SUCCESS << ff
check the other add*
methods to add multipart parameters: org.apache.http.entity.mime.MultipartEntityBuilder
To check this code I used InvokeHTTP
processor just after ExecuteGroovyScript
with only following parameters changed:
- HTTP Method: POST
- Remote URL: http://httpbin.org/post