在带有Api版本控制的Asp.Ner Core 3.1中，CreatedAtAction返回“没有路由与提供的值匹配” 500错误

Question

我在带有Api版本控制的Asp.Net Core 3.1中有一个Web API项目，其设置如下：

[ApiController]
[Route("api/v{version:apiVersion}/[controller]")]
public abstract class BaseApiController : ControllerBase
{
    ...
}

我正在测试的

控制器：

public class RegistrationController : BaseApiController
{
    [HttpGet]
    [Route("{id}")]
    public async Task<ActionResult<RegistrationDTO>> GetRegistration(int id)
    {
        ...
    }

    [HttpPost]
    public async Task<IActionResult> Create(RegistrationCreateDTO item, ApiVersion apiVersion)
    {
        ...
        return CreatedAtAction(nameof(GetRegistration), new { id = itemId, version = $"{apiVersion.MajorVersion.Value}" }, itemId);
    }
}

由于某种原因，除非我删除[Route {“ id”}]并将[HttpGet]更改为[HttpGet {“ id”}]，否则这是行不通的。知道是什么原因导致了这种行为吗？

请注意，我没有设置任何特定的路由，只是一个简单的app.UseHttpsRedirection();和app.UseEndpoints(endpoints => { endpoints.MapControllers(); });

Answer 1

这是一个演示作品： Startup.cs：

def gen_password():
    letters = string.ascii_letters
    random_letter = random.choice(letters)
    random_num = random.randint(0,9)
    letter_or_num = ["letter","number"]
    char_num = int(input("How many characters do you want in your password?: "))
   
    password = []
    for i in range(char_num):
        random_var = random.choice(letter_or_num)
        if random_var == "letter":
            random_letter = random.choice(letters)
            # replace print with this:
            password.append(random_letter)  
         
        elif random_var == "number":
            random_num = random.randint(0,9)
            password.append(str(random_num))
    return "".join(password)

print(gen_password())

BaseApiController：

public void ConfigureServices(IServiceCollection services)
        {

            services.AddApiVersioning(o =>
            {
                o.ReportApiVersions = true;
                o.AssumeDefaultVersionWhenUnspecified = true;
                o.DefaultApiVersion = new ApiVersion(1, 0);
            });
        }


public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
           app.UseEndpoints(endpoints => { endpoints.MapControllers(); });
        }

RegistrationController：

[ApiController]
    [Route("api/v{version:apiVersion}/[controller]")]
    public class BaseApiController : ControllerBase
    {
        
    }

结果：