I've written a simple ASP.NET Core 2.2 Web API
. The POST
method always returns a 404
, but GET requests succeed.
public class TestPayload
{
public string test1 { get; set; }
public string test2 { get; set; }
}
[Route("api/[controller]")]
[ApiController]
public class TestController: ControllerBase
{
// POST api/create
[HttpPost]
public async Task<ActionResult<string>> Create([FromBody] TestPayload value)
{
return Ok("");
}
}
I get back a 404 error in my Angular HttpClient front-end.
let headers = new HttpHeaders().set('Content-Type', 'application/json');
return this.http.post<any>(`${config.apiUrl}/test/create`, { test1, test2}, { headers }).pipe(map(x => {
...
return x;
}));
I get the same error in Postman.
POST /api/Test/Create HTTP/1.1
Host: localhost:5001
Content-Type: application/json
cache-control: no-cache
Postman-Token: 4d304e86-013c-4be8-af07-f2262079000d
{ test1: "val1", test2: "val2" }------WebKitFormBoundary7MA4YWxkTrZu0gW--
I have enabled the most permissive CORS policies (to test with) in my Startup.cs file, but it doesn't fix the issue.
public void ConfigureServices(IServiceCollection services)
{
services.AddCors(options =>
{
options.AddPolicy("AllowAll",
builder =>
{
builder
.AllowAnyOrigin()
.AllowAnyMethod()
.AllowAnyHeader();
});
});
services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
}
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
else
{
app.UseHsts();
}
app.UseCors("AllowAll");
app.UseHttpsRedirection();
app.UseMvc();
}
I see the following message in the Output window in Visual Studio, which leads me to believe it is a CORS error, but I don't know what I have done wrong. My breakpoints inside the method never get hit, even though symbols are loaded and they are hit in the GET methods.
Microsoft.AspNetCore.Server.Kestrel:Information: Connection id "0HLKU1LFDTCPA", Request id "0HLKU1LFDTCPA:00000002": the application completed without reading the entire request body.
This is running all on localhost. I have installed Microsoft.AspNetCore.Cors (2.2.0) NuGet package in my project.
You have not specified a route to the action. You can either change your post to go to /api/Test or set the attributes on the action as follows:
[HttpPost("Create")]
public async Task<ActionResult<string>> Create([FromBody] TestPayload value)
{
return Ok("");
}
or
[HttpPost]
[Route("Create")]
public async Task<ActionResult<string>> Create([FromBody] TestPayload value)
{
return Ok("");
}
or update the controller route to include the action
[Route("api/[controller]/[action]")]
Try to add:
[EnableCors(origins: " * ", headers: " * ", methods: " * ")]
to your Controller class. ( remove with spaces in the quotes )
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