我应该如何解决 ASP.NET 核心多端点错误

Question

我的控制器是：

[Route("api/[controller]")]
[ApiController]
public class SubjectController : ControllerBase
{
    private TourActivityExpenseContext tourActivityExpenseContext = new TourActivityExpenseContext();
      
    [HttpGet]
    public IEnumerable<SubjectTo> Get()
    {
        var subjects = tourActivityExpenseContext.SubjectTos.ToList();
        return subjects;
    }

    [HttpGet("{subject}")]
    public int GetSubjectId(String subject)
    {
        var subjects = tourActivityExpenseContext.SubjectTos.ToList();
        var isSub = subjects.FirstOrDefault(x => x.Subject == subject);
        int id = isSub.Id;
        return id;
    }
    
    [HttpGet("{id}")]
    public string Get(int id)
    {
        var subjects = tourActivityExpenseContext.SubjectTos.ToList();
        var isSub = subjects.FirstOrDefault(x => x.Id == id);
        String sub = isSub.Subject;
        return sub;
    }
}

当在 Postman 中使用URL like

请求时

http://localhost:5000/api/Subject/Meeting

我收到这样的错误：

Microsoft.AspNetCore.Routing.Matching.AmbiguousMatchException: The request matched multiple endpoints. Matches:

TourExp.Controllers.SubjectController.Get (TourExp)
TourExp.Controllers.SubjectController.GetSubjectId (TourExp)

Answer 1

试着给他们一个具体的路线:

        [HttpGet("GetSubject/{subject}")]
        public int GetSubjectId(String subject)
        {

            var subjects = tourActivityExpenseContext.SubjectTos.ToList();
            var isSub = subjects.FirstOrDefault(x => x.Subject == subject);
            int id = isSub.Id;
            return id;
        }