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SAP HANA XSJS Classic - Making a multipart POST call to a Machine Learning API - Passing Image

May 06 at 05:22 AM

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Former Member

Hi,

Am tyring to make an external API Call from HANA XS classic by uploading an Image to Public ML API, however the call fails with invalid Key error.

Please see below the code, can you kindly suggest the right way to pass the Key -value pairs for such calls

var ImageDecoded = $.util.codec.decodeBase64(image); // image is read from DB    
request.contentType = "multipart/form-data";
    var entity = request.entities.create();
    request.entities[0].contentType = "multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW"; // Copied the boundary from Postman generated code
    request.entities[0].headers.set("------WebKitFormBoundary7MA4YWxkTrZu0gW" + 
                "Content-Disposition", "form-data;" +
                "name=\"imageupload\";" +
                ImageDecoded + 
                "Content-Type: image/jpeg" +
                "------WebKitFormBoundary7MA4YWxkTrZu0gW--");
    request.entities[0].setBody(ImageDecoded);
    client.request(request, "http://xx.xx.xx.xx:pppp/getImage");
    var response = client.getResponse();  

The response from the server is

BadRequestKeyError: 400 Bad Request: KeyError: 'imageupload'

Thanks

Sudarshan

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