WebApi 2 GET has special character in parameter

Question

My problem comes when I call a webapi2 GET with a string parameter that has special char (with normal character all works correctly).

AngularJs

this.getByContactValue = function (contactValue) {   
        return $http.get("/api/subjects/"+ contactValue+ "/ContactValue" );
    }

c#

[Route("api/subjects/{contactValue}/ContactValue")]
public IEnumerable<Subject> GetByContactValue(string contactValue)
{
    return repository.GetByContactValue(contactValue);
}

The response is 404 error. I tried also to modify the request in this way

this.getByContactValue = function (contactValue) {
        var request = $http({
            method: "get",
            url: "/api/subjects/ContactValue", //modified the route in c# controller
            data: contactValue
        });
        return request;
    }

But the error is the same.

Which is the best way to call the webapi?

The best way is to pass the parameters in either querystring or the form. can you please provide the data for which the error is occuring? — SamGhatak, Apr 06 '16 at 13:08
Possible duplicate of http://stackoverflow.com/questions/14359305/mvc-web-api-routing-fails-when-url-contains-encoded-ampersand — Federico Dipuma, Apr 06 '16 at 19:38

M.S. · Answer 1 · 2016-04-07T08:36:47.060

4

You've to pass data in query strings as

$http({
    url: "/api/subjects/ContactValue", 
    method: "GET",
    params: {contactValue: contactValue}
 });

Update your action

[Route("api/subjects/ContactValue?contactValue={contactValue}")]
public IEnumerable<Subject> GetByContactValue(string contactValue)
{
    return repository.GetByContactValue(contactValue);
}

edited Apr 07 '16 at 08:36

answered Apr 06 '16 at 13:11

M.S.

4,283
1
19
42

2

In this way i receive this error - `The route template cannot start with a '/' or '~' character and it cannot contain a '?' character.` Have I to specify the value of the parameter in the controller ? – lpernice Apr 07 '16 at 10:36

score 2 · Accepted Answer · answered Apr 07 '16 at 15:26

2

Finally I solved in this way

[Route("api/subjects/ContactValue")]
public IEnumerable<Subject> GetByContactValue([FromUri]string contactValue)
{                                 
    return repository.GetByContactValue(contactValue);
}

answered Apr 07 '16 at 15:26

lpernice

115
1
3
12

score 0 · Answer 3 · answered Dec 21 '19 at 08:39

Simplest way is to use encodeURI or encodeURIComponent, it'll Encode data in url.

Ts-

   let bg= encodeURIComponent(contactValue);
   return AuthAxios.get(`${APINAME}?bg=${bg}`);

API

    [HttpGet(nameof(GetBgList))]
    public async Task<IActionResult> GetBgList(string bg)
    {
        return Ok(MessageAlert.DataFound(await _bgService.GetBgList(bg)));
    }

WebApi 2 GET has special character in parameter

3 Answers3