WebAPI - 405 - The resource does not support http 'POST'

L A

8y24.2k.NET

Hi, I'm working on WebAPI, with a controller having C[HttpPost] R[HttpGet] U[HttpPut] D[HttpDelete]

///
/// WebAPI - Controller
///
public class PersonController : ApiController
{
static IList personsList = LoadPersons();
///
/// Get list of all Persons
///
/// Persons
[HttpGet]
[Route("api/Person/")]
public IHttpActionResult GetPerson()
{
return Ok(personsList);
}
///
/// Get a person based on input - entityId
///
///
/// A single person matching id
[HttpGet]
[Route("api/Person/{entityId:int?}")]
public IHttpActionResult GetPersonById([FromUri]int? entityId)
{
if (entityId != null)
{
var person = personsList.Where(p => p.EntityId == entityId).SingleOrDefault();
return Ok(person);
}
return BadRequest("Invalid EntityId !!, can't have invalid chars");
}
///
/// Add a new person with specifed data
///
///
/// Ok, if success
[HttpPost]
public IHttpActionResult SavePerson([FromBody]Person personData)
{
if (personData != null)
{
personsList.Add(personData);
return Ok();
}
return BadRequest("Invalid !!");
}
///
/// Modify existing person's email-Id based on Id
///
///
///
[HttpPut]
public IHttpActionResult UpdatePerson([FromBody]Person personData)
{
if (personData != null)
{
var person = personsList.Where(p => p.EntityId == personData.EntityId).SingleOrDefault();
person.Email = personData.Email;
return Ok(person);
}
return BadRequest("Invalid !!");
}
///
/// Remove a specifc person based on Id
///
///
///
[HttpDelete]
public IHttpActionResult RemovePerson(int? entityId)
{
if (entityId != null)
{
var delPerson = personsList.Where(p => p.EntityId == entityId).SingleOrDefault();
personsList.Remove(delPerson);
return Ok();
}
return BadRequest("Invalid !!");
}
private static List LoadPersons()
{
var persons = new List();
persons.Add(new Person { Email = "ron's Email", EntityId = 01, Name = "ron" });
persons.Add(new Person { Email = "saun's Email", EntityId = 02, Name = "saun" });
persons.Add(new Person { Email = "jae's Email", EntityId = 03, Name = "jae" });
return persons;
}
}

I'm able to do GET request and list person(s)

But when i try to do a POST/ PUT/ DELETE request i'm getting response as '"The requested resource does not support http method 'POST'/ 'PUT'/ 'DELETE''.

What am i missing here? help me to figure my mistake

11 Replies

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Ruchi Sharavat8y ago
I was facing this problem for "PUT" request and was able to fix it by deselecting "WebDAV" from IIS.

Here is link and you can find more too:

https://community.ipswitch.com/s/article/Server-Error-405-HTTP-verb-used-to-access-this-page4-is-not-allowed
L A8y ago
Thanks Jenith Thakkar, for your detailed response. As you have mentioned 'So whenever you Request with respective ActionName That time Api will not capable to find that path so you need to write route in above methods'. Actually i'm not calling any actions with their names. After your response i have removed all routes from my GET actions and my controller looks as
[HttpGet]
//[Route("api/Person/")]
public IHttpActionResult GetPerson()
{
return Ok(personsList);
}
///
/// Get a person based on input - entityId
///
///
/// A single person matching id
[HttpGet]
//[Route("api/Person/{entityId:int?}")]
public IHttpActionResult GetPersonById([FromUri]int? entityId)
{
if (entityId != null)
{
var person = personsList.Where(p => p.EntityId == entityId).SingleOrDefault();
return Ok(person);
}
return BadRequest("Invalid EntityId !!, can't have invalid chars");
}
And when i make Get/ Post request using fiddler, it works perfectly fine.
Jenith Thakkar8y ago
Hi Learn

Yes you are right webapi is capable of calling respective method but in Web API there is Default Routing is

api/{controller}/{id}

So whenever you Request with respective ActionName That time Api will not capable to find that path so you need to write route in above methods

There are several other ways to do that

You can Write this Above Controller Name like
[Route(api/{controller}/{action})]
public class ProductsController : ApiController
{
[HttpGet]
[ActionName("Thumbnail")]
public HttpResponseMessage GetThumbnailImage(int id);
{
}
[HttpPost]
[ActionName("Thumbnail")]
public void AddThumbnailImage(int id);
{
}
}
Also you Can Define a same path in Directly RouteConfig

Like this
routes.MapHttpRoute(
name: "ActionApi",
routeTemplate: "api/{controller}/{action}/{id}",
defaults: new { id = RouteParameter.Optional } );
And Then Directly Write this Kind
public class ProductsController : ApiController
{
[HttpGet]
[ActionName("Thumbnail")]
public HttpResponseMessage GetThumbnailImage(int id);
{
}
[HttpPost]
[ActionName("Thumbnail")]
public void AddThumbnailImage(int id);
{
}
}
if it's helpful for you then kindly accept my answer
L A8y ago
Thanks Jenith Thakkar, for your response which helped. But why would i use Routes for POST/ PUT/ DELETE with method names? I think we dont have to expose our method names and WebAPI is capable of calling respective methods based on HTTP request types.
Jignesh Kumar8y ago
Did you check your fidler setting like you have to set operation type post, Put and delete and you have to pass json body for your method.
Jenith Thakkar8y ago
Hi Learn
Try it with Just Adding Route As I Say in my last Comment
L A8y ago
Thanks Jignesh Kumar, I'm able to test HttpGet but only POST/PUT/DELETE aren't working
Jenith Thakkar8y ago
Hi

please Add Route to All Method Like

For Post : [Route("api/Person/SavePerson")]
For Put : [Route("api/Person/UpdatePerson")]
For Delete: [Route("api/Person/RemovePerson")]
L A8y ago
Thanks Jayakumar Balasubramaniam, for your response. I'm not willing to use same method for different Http actions. Infact i already created methods for different Http Actions. But I'm unable to call POST/ PUT/ DELETE metods.
Jignesh Kumar8y ago
Hi,

Please follow the six steps for testing POST/PUT/DELETE in given link

https://www.c-sharpcorner.com/article/how-to-use-fiddler-with-asp-net-web-api-testing/
Jayakumar Balasubramaniam8y ago
Hi,

In the GetPerson method you have explicitly mentioned that it will support only Get using th ekeyword "HttpGet", if you want the same method to support Post/Put/Delete, you need to mention that as well like below,
[HttpGet,HttpPost]

[Route("api/Person/")]

public IHttpActionResult GetPerson()

{

return Ok(personsList);

}
Thanks,

Jayakumar B