How to create JSON-Code

Hi,

Can someone help me how I create the attached JSON-Code? I know I have to do it with a struct, but don't know how to do it exactly with the brackets.

{

"query": "Who likes Pizza?",

"documents": [

{

"text": "Andreas likes Pizza."

},

{

"docx": "b64;base64EncodededWordDocument"

}

]

}

Answer 1

[the cyclist]

Will the jsonencode function do what you need?

If not, can you be more specific about what you have as input, and what exactly you want for output?

[Christopher Dirks]

The jsonencode function is the right one. But I don't know how to give the information to the function, to get the exact structure of the information in JSON

[the cyclist]

I don't know if this is exactly what you need, but I think it should give you an idea of how to create a nested structure, and then convert it to JSON:

s(1).Query = 'View from the 15th Floor';
s(1).Documents.text = "Andreas";
s(1).Documents.docx = "b64;base64";

s(2).Query = 'View from the 31st Floor';
s(2).Documents.text = "Joe";
s(2).Documents.docx = "b32;base32";

j = jsonencode(s,PrettyPrint=true)

j = 
    '[
       {
         "Query": "View from the 15th Floor",
         "Documents": {
           "text": "Andreas",
           "docx": "b64;base64"
         }
       },
       {
         "Query": "View from the 31st Floor",
         "Documents": {
           "text": "Joe",
           "docx": "b32;base32"
         }
       }
     ]'

[Christopher Dirks]

I think this is the right way, but not the solution. I get this error:

Error using matlab.internal.webservices.HTTPConnector/copyContentToByteArray

The server returned the status 400 with message "Bad Request" in response to the request to URL https://api.aleph-alpha.com/qa.

Error in readContentFromWebService (line 46)

byteArray = copyContentToByteArray(connection);

Error in webwrite (line 139)

[varargout{1:nargout}] = readContentFromWebService(connection, options);

I think I have to use the square brackets, but still do not know how to.