Why sending base64encode string to ASP.NET WebAPI some character are auto-missing

Asked Jan 31 '19 at 04:29

Active Jan 31 '19 at 08:23

Viewed 384 times

I am posting a base64encode string to my asp.net-webapi such as "PHA+ZHNmYWFzZGYgZDxzcGFuIHN0eWxlPSJiYWNrZ3JvdW5kLWNvbG9yOiByZ2IoMjU1LCAyNTUsIDApOyI+c2FmYWRzZjwvc3Bhbj48L3A+"

But... the api only receives the string as following "PHA ZHNmYWFzZGYgZDxzcGFuIHN0eWxlPSJiYWNrZ3JvdW5kLWNvbG9yOiByZ2IoMjU1LCAyNTUsIDApOyI c2FmYWRzZjwvc3Bhbj48L3A " with '+' character repleced by ' '.

[Route("api/Test/TestFuncCall")]
[HttpPost]
public HttpResponseMessage TestFuncCall([FromBody] string input)
{
    JObject jo = JObject.Parse(input);
    string data = Convert.ToString(jo["data"]);
    string c = System.Text.Encoding.GetEncoding("utf-8").GetString(Convert.FromBase64String(data));
    return Request.CreateResponse(HttpStatusCode.OK, c);
}

I've tried to add <pages validateRequest="false"/> to my web.config. But not working.

How to get the full base64encode string without any filter?

edited Jan 31 '19 at 08:23

artista_14

asked Jan 31 '19 at 04:29

Bryan Yang

Possible duplicate of [Passing base64 encoded strings in URL](https://stackoverflow.com/questions/1374753/passing-base64-encoded-strings-in-url) – Simply Ged Jan 31 '19 at 04:37
You need to url encode the string as there are characters in a base64 string that can be used in a URL e.g. '+', '=' – Simply Ged Jan 31 '19 at 04:40
Hi... But I am using HTTP POST Method Not GET...still need urlencode the post data payload? – Bryan Yang Jan 31 '19 at 05:24
1

Yes. The HttpMethod doesn't matter. Don't forget to Decode the string at the controller to convert it back to the original base64 string. – Simply Ged Jan 31 '19 at 05:36
yes.... it works.... ..thx a lot... – Bryan Yang Jan 31 '19 at 05:57

Why sending base64encode string to ASP.NET WebAPI some character are auto-missing

0 Answers0