Forum Discussion

New2API's avatar
New2API
Frequent Contributor
6 years ago

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

Experts I need help with posting a file with Content-Type: multipart/form-data header. I need to send some metadata information in Json format. File should encoded in base64 format.   what have...
Nastya_Khovrina's avatar
Nastya_Khovrina
SmartBear Alumni (Retired)
6 years ago

Hi, 

 

Thank you for your post. I cannot reproduce the issue when there is an empty line between headers, or the filename parameter is on a separate line (I used ReadyAPI 2.6.0).

 

The needed headers should be added if you add a file on the Attachments tab of the Request.

 

To further troubleshoot the issue, I will need to see the content of the TestCase properties and the screenshot of the Attachments tab. 

 

Also, I can recommend that you open a new case here: https://support.smartbear.com/message/?prod=ReadyAPI

 

 

 

  • New2API's avatar
    New2API
    Frequent Contributor
    6 years ago

    Hi Nastya, Thank you for the effort and reply.

     

    I didn't attach file to attachment tab due to default binary encoding. Request is designed to send base64 encoded file. Is there any way to change the default file encoding inside ReadyAPI?

     

    Now for the empty line between those multipart headers -  

    I am creating json part on the fly via groovy script in order to update json nodes with different data such as currentdate, new relationship no, contact etc... As part of this process I am hardcoding second header line as I am not sure how to include it automatically with form-data.

     

     

    //## build json body and write to a file for reference ##//
def REQUEST = new JsonBuilder(metaDataVal).toString()
    REQUEST = "Content-Type: application/json; charset=utf-8\r\n\r\n" + "$REQUEST" 
    
    testRunner.testCase.setPropertyValue("docMetaData", REQUEST)

    For the file part - I am encoding the file and hard coding other headers too (attached a file to show the file content). 

     

    Multipart/form-data puts only Content-Disposition: header.

     

    //## READ canned request from a file to modify ##//
def testFile	 = new File(RequestPath + "testFile.txt").text //## base64 encoded format is stored in this file ##//
    testRunner.testCase.setPropertyValue("testFile", "$testFile")

     

      • New2API's avatar
        New2API
        Frequent Contributor
        6 years ago

        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")