Question

我目前有这个控制器

[RoutePrefix("api/Home")]
public class HomeController : ApiController
{

    [HttpGet]
    [Route("")]
    public IHttpActionResult GetByIdAndAnotherID([FromUri]int? id = null, [FromUri]int? AnotherId = null){

        if (!ModelState.IsValid) //From ApiController.ModelState
        {
            return BadRequest(ModelState);
        }
    }
}

我只想匹配以下3个网址：

api/Home（id和AnotherId都为空）
api/Home?id=1（只有Anotherid为空）
api/Home?AnotherId=1（只有Id为空）

其他网址应返回unregistered routes或error。目前，api/Home?asdfanyquery也会返回不符合我要求的匹配项。

如何重写控制器以使路线只匹配上面的3个网址？

Answer 1

您说api/Home?asdfanyquery的条件将属于默认路由。这是id，另一个是null。试试下面的

[RoutePrefix("api/Home")]
    public class HomeController : ApiController
    {
        [HttpGet]
        [Route("{id=id}/{AnotherId=AnotherId}")]
        public bool GetByIdAndAnotherID([FromUri]int? id = null, [FromUri]int? AnotherId = null)
        {

            return true;
        }
    }

api/Home?asdfanyquery或api/Home - id和AnotherId都为空）
api/Home?id=1（只有Anotherid为空）
api/Home?AnotherId=1（只有Id为空）

Answer 2

我按照评论中的建议结束了creating an ActionFilterAttribute，并将其应用如下：

public class InvalidQueryStringRejector : ActionFilterAttribute
{
    public override void OnActionExecuting(HttpActionContext actionContext)
    {
        var arguments = actionContext.ActionArguments.Keys;

        var queryString = actionContext.Request.GetQueryNameValuePairs()
            .Select(q => q.Key);

        var invalidParams = queryString.Where(k => !arguments.Contains(k));

        if (invalidParams.Any())
        {
            actionContext.Response = actionContext.Request.CreateResponse(HttpStatusCode.BadRequest, new
            {
                message = "Invalid query string parameters",
                parameters = invalidParams
            });
        }
    }
}


[RoutePrefix("api/Home")]
public class HomeController : ApiController
{
     [InvalidQueryStringRejector] //The custom created ActionFilterAttribute
     [HttpGet]
     [Route("")]
     public IHttpActionResult GetByIdAndAnotherID([FromUri]int? id = null, [FromUri]int? AnotherId = null)
     {
         if (!ModelState.IsValid) //From ApiController.ModelState
         {
              return BadRequest(ModelState);
         }
     }
}

如何防止随机查询与[Route（＆＃39;＆＃39;）]注释的操作匹配？

2 个答案: