ASP.NET Core WebApi：AmbiguousMatchException：请求与多个端点匹配

Question

我在标准.NET Core WebApi项目中有此控制器代码：

[ApiController]
[Route("[controller]")]
public class MessageController : ControllerBase
{
  [HttpGet]
  public string GetByTransactionId([FromRoute(Name = "transactionId")] string transactionId)
  {
    return "transactionId";
  }

  [HttpGet]
  public string GetByNumber([FromRoute(Name = "number")] string number)
  {
    return "number";
  }
}

我想像这样访问api

• https：// localhost：44316 / Message？transactionId = abc
• https：// localhost：44316 / Message？number = foobar

当访问端点URL时，例如：https：// localhost：44316 / Message？transactionId = abc，我得到的错误是：

AmbiguousMatchException: The request matched multiple endpoints. Matches:

Server.Controllers.MessageController.GetByTransactionId (Server)
Server.Controllers.MessageController.GetByNumber (Server)

可以通过使用正确的[HttpGet]或[Route]属性来解决此问题吗？

Answer 1

    [ApiController]
    [Route("[Message]")]
    public class MessageController : ControllerBase
    {
      [HttpGet]
      [Route("transactionId")]
      public string GetByTransactionId([FromRoute(Name = "transactionId")] string transactionId)
      {
        return "transactionId";
      }
    
      [HttpGet]
      [Route("number")]
      public string GetByNumber([FromRoute(Name = "number")] string number)
      {
        return "number";
      }
    }

尝试使用Route-attribute。这将解决您的问题