How to post a REST with Json value and base64 encoded file as a multipart/form-data?

Hey Nastya, awesome!!!

Second link helped me to inject or correct the headers in multi-part body of a request. 

Thanks a ton!

I have not used attachment tab to attach a file.

Instead, I encoded a file using groovy. Groovy script does the following.

• Reads a canned json from a file and updates json nodes with right attributes
• Saves updated json to a testcase property
• Reads a pdf file and encodes in base64 format
• Saves encoded file to a testcase property

In Rest Step, I am calling above testcase properties as query parameters. Also, selected media type as "Multipart/form-data' and checked "Post QueryString" option.

In order to inject required headers I used below event handler script. (RequestFilter.filterRequest)

import org.apache.http.client.methods.HttpRequestBase
import com.eviware.soapui.impl.wsdl.submit.transports.http.BaseHttpRequestTransport

def bodyPart = context.getProperty("httpMethod").requestEntity.message.content.getBodyPart(0) //## get a part by number, it starts with 0
    
    //## Add headers to json section of body
    bodyPart.addHeader("Content-Type", "application/json; charset=utf-8") //## specify the value without the name parameter 

def bodyPart1 = context.getProperty("httpMethod").requestEntity.message.content.getBodyPart(1) // get a part by number, it starts with 0
    bodyPart1.removeHeader("Content-Disposition") //## delete default headder added by SoapUI

    //## Add headers to PDF section of body
    bodyPart1.addHeader("Content-Disposition", "form-data; name="+"document0"+"; filename="+"TesTDoc.pdf")
    bodyPart1.addHeader("Content-Type", "application/pdf") 
    bodyPart1.addHeader("Content-Transfer-Encoding", "base64")