ASP .NET Core Web API route dot in url causes 404 not found

Question

I have a problem of url routing in ASP.NET Core web api. When the URL contins dot (.) it returns 404 not found. For example,

http://localhost:9030/api/test/109/[email protected]

The code that doesn't work with email but work with no dot

public class TestController : Controller{
{
    [HttpGet]
    [Route("{id:int}")]
    public IActionResult Get(int id)
    {
        //whatever
    }

    [HttpGet]
    [Route("{id:int}/{name:alpha}")]
    public IActionResult Get(int id, string name)
    {
        //whatever
    }
}

However, this works

http://localhost:9030/api/test/getbyname/109/[email protected]

public class TestController : Controller{
{
    [HttpGet("GetById/{id}")]
    public IActionResult Get(int id)
    {
        //whatever
    }

    [HttpGet("GetByName/{id}/{name}")]
    public IActionResult Get(int id, string name)
    {
        //whatever
    }
}

How to solve that problem?

[email protected] would not be valid regardless. Did you forget to url encode the @? urlencoder.org — mjwills
– mjwills, Commented Jan 3, 2019 at 12:05
No problem with @. The problem is dot (.). I'm using IIS 8.5 — derodevil
– derodevil, Commented Jan 3, 2019 at 12:13
It may work, but you shouldn't be passing @ like that. You should url encode it. — mjwills
– mjwills, Commented Jan 3, 2019 at 12:21

Reece Taylor · Accepted Answer · 2019-01-03 12:27:14Z

3

Your problem is the

[Route("{id:int}/{name:alpha}")]

You are saying only accept alphabet characters which means a-z and A-Z not including any special characters. you are best using a regex to validate if it is always an email address.

try this

[Route("{id:int}/{name}")]

edited Jan 3, 2019 at 12:27

answered Jan 3, 2019 at 12:15

Reece Taylor

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1 Comment

derodevil Over a year ago

Thanks. It works now. This is the complete explanation learn.microsoft.com/en-us/aspnet/core/fundamentals/… and this is for custom constraints sample c-sharpcorner.com/article/creating-custom-routing-constraint

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