HTML - 将表单数据作为序列化的json发送

Question

I'm currently working on a system that needs to be able redirect a consumer to a c# application using a form which POSTs data as a serialized JSON string along with the consumer.

So, the form would look something like this, essentially: -

<form action="c#methodLocation" method="post">
   <input type="text" value="<?php echo $safeFormatJson; ?>">
   <input type="submit" value="submit">
</form>

I would imagine an enctype would be needed, however I've tried "application/json" but the data is interpreted as UrlEncoded. Would text/plain work, or is it even possible to send strictly a serialized string as a POST?

I've tried using Jquery and AJAX to send the data a different way, but that method creates issues with the data being rewritten when the consumer arrives to the c# side, as a new session is inadvertently created when doing so.

Answer 1

The only solution known by me is to catch onsubmit event and then send any hand-made-request you like

Here is pseudode with something jQuery-like (it can be prototype.js, angular.js or pure JS8)

(
 var form = $("#myform"); //find needed element in DOM
 var mySecretEncription = function(){.../*hard to understand secret*/}; //define your specials
 var myPost = function(){ //provide functionality to send valid request
     var myData = {};
     myData.superField  = mySecretEncription(form.select("input.myfield").value);
     $.http({
        url : "special-post-url or form.action attribute",
        method:"POST",
        headers:{... my special header ...},
        data :myData
     })
 }
 form.on("submit", mypost); //event subscription

)()

It's not code to copy, it's recepie