角- NetworkError: 404未找到-NetworkError

Question

我将把我的字符串发布到api，但是每次我都有这样的错误。不过，被小提琴手弄得很好

NetworkError: 404 Not Found - http://localhost:3094/api/Controller/Action/

这是我的js密码

 var deferred = $q.defer();

    $http.post('http://localhost:3094/api/Country/GetSelectionCount/' ,
        {id:selection})
        .success(function (data, status, headers, config) {
            deferred.resolve(data);
        })
        .error(function (data, status, headers, config) {
            deferred.reject(data);
        });

    return deferred.promise;

和服务器代码

 [AcceptVerbs("GET")]
    [ActionName("GetSelectionCount")]
    public IHttpActionResult GetSelectionCount(string id)
    {
        if (String.IsNullOrWhiteSpace(id))
            return NotFound();

        var result= (from m in db.Products
                     where m.ProductName.Contains(id)
                     select m).Count();

        return Ok(result);
    }

Answer 1

404在这种情况下是正常的。您正在从角投递一个具有id属性的对象，但是在服务器端，您需要一个string属性。因此，.net无法与动作相匹配。

您需要更改服务器端操作参数或角发送数据。

public class MyModel
{
    public string id {get;set;}
}
[AcceptVerbs("POST")]
[ActionName("GetSelectionCount")]
public IHttpActionResult GetSelectionCount([FromBody] MyModel model)
{
    if (model == null || String.IsNullOrWhiteSpace(model.id))
        return NotFound();

    var result= (from m in db.Products
                 where m.ProductName.Contains(model.id)
                 select m).Count();

    return Ok(result);
}

Answer 2

我认为404与路由引擎有更多的关系，无法在控制器上找到相关的动作方法。您可以使用Route属性来确认它，如

[AcceptVerbs("POST")]
[ActionName("GetSelectionCount")]
[Route("api/country/GetSelectionCount/")]
public IHttpActionResult GetSelectionCount(string id)
{
    if (String.IsNullOrWhiteSpace(id))
        return NotFound();

    var result= (from m in db.Products
                 where m.ProductName.Contains(id)
                 select m).Count();

    return Ok(result);
}