MVC将我的GET请求路由到错误的操作

Question

我的应用程序中存在URL路由问题。我试图解决这个问题，但还没有取得任何进展。

所以，我正在客户端进行以下AJAX请求：

$.ajax({
    type: 'GET',
    url: programState.getBaseUrl() + 'Playlist/GetPlaylistsByUserId',
    dataType: 'json',
    data: {
        userId: user.get('id')
    },
    success: function (data) {
        console.log("JSON data:", data);
    },
    error: function(error) {
        console.error(error);
    }
});

这是网络：

这是服务器错误：

以下是GET和GetPlaylistsByUserId的Controller方法：

[HttpGet]
public ActionResult Get(Guid id)
{
    Playlist playlist = PlaylistDao.GetById(id);

    return new JsonDataContractActionResult(playlist);
}

[HttpGet, ActionName("GetPlaylistsByUserId")]
public ActionResult GetPlaylistsByUserId(Guid userId)
{
    IList<Playlist> playlists = PlaylistDao.GetByUserId(userId);

    return new JsonDataContractActionResult(playlists);
}

最后，这是我的路线：

routes.MapRoute(
    "getPlaylistsByUserId",
    "{controller}/{userId}",
    new { controller = "Playlist", action = "GetPlaylistsByUserId" },
    new { httpMethod = new HttpMethodConstraint("GET") }
);

routes.MapRoute(
    "post-Playlist",
    "{controller}",
    new { controller = "Playlist", action = "create" },
    new { httpMethod = new HttpMethodConstraint("POST") }
    );

routes.MapRoute(
    "get-Playlist",
    "{controller}/{action}/{id}",
    new { controller = "Playlist", action = "get" },
    new { httpMethod = new HttpMethodConstraint("GET") }
    );

routes.MapRoute(
    "put-Playlist",
    "{controller}",
    new { controller = "Playlist", action = "update" },
    new { httpMethod = new HttpMethodConstraint("PUT") }
    );

routes.MapRoute(
    "delete-Playlist",
    "{controller}/{id}",
    new { controller = "Playlist", action = "delete" },
    new { httpMethod = new HttpMethodConstraint("DELETE") }
    );

routes.MapRoute(
    "Default",
    "{controller}/{action}/{id}",
    new {controller = "Home", action = "Index", id = UrlParameter.Optional}
    );

尽我所知 - 我将我的网址路由到我的“获取”操作，但我打算将其路由到“GetPlaylistsByUserId”操作。我相信这会发生，因为服务器错误表明它正在寻找方法'Get'的参数'id'。

我不确定为什么会发生这种情况，因为我似乎非常明确地将我的其他行动映射到了......？

Answer 1

将路线与请求进行比较 - 您要求的行动名称与路线不匹配。目前，您的路由期望您的ajax请求转到.../Playlist/SomeGuid，而不是Playlist/GetPlaylistsByUserId?userId=SomeGuid。

如果您想要将所有请求路由到Playlist控制器到GetPlaylistsByUserId操作，如果未指定任何操作，则您需要的路径是：

routes.MapRoute(
    "getPlaylistsByUserId",
    "Playlist",
    new { controller = "Playlist", action = "GetPlaylistsByUserId" },
    new { httpMethod = new HttpMethodConstraint("GET") }
);

请注意省略userId - 这是作为查询字符串传递的，不需要包含在您的路由中。 MVC将自动绑定它。

然而，按照目前的情况，你是请求一个动作名称，所以以下路线会选择这个：

routes.MapRoute(
    "getPlaylistsByUserId",
    "Playlist/{action}",
    new { controller = "Playlist", action = "GetPlaylistsByUserId" },
    new { httpMethod = new HttpMethodConstraint("GET") }
);

您也可以使用{controller}/{action}，但我猜您不希望所有控制器默认为名为GetPlaylistsByUserId的操作。

Answer 2

routes.MapRoute(
    "getPlaylistsByUserId",
    "{controller}/{userId}",
    new { controller = "Playlist", action = "GetPlaylistsByUserId" },
    new { httpMethod = new HttpMethodConstraint("GET") }
);

我不确定这是不是可以，但是有没有机会，因为你的Url模式中没有{action}？

routes.MapRoute(
    "getPlaylistsByUserId",
    "{controller}/{action}/{userId}",
    new { controller = "Playlist", action = "GetPlaylistsByUserId" },
    new { httpMethod = new HttpMethodConstraint("GET") }
);

Answer 3

您的问题是请求网址看起来像

Playlist/GetPlaylistsByUserId?userid=51d77etc...

，您的路由设置为：

routes.MapRoute(
    "getPlaylistsByUserId",
    "{controller}/{userId}",
    new { controller = "Playlist", action = "GetPlaylistsByUserId" },
    new { httpMethod = new HttpMethodConstraint("GET") }
);

他们不匹配。

对于要使用的路径，网址应如下所示：

Playlist?userid=51d77etc...

或您的网址应保持不变，路线映射应为

routes.MapRoute(
    "getPlaylistsByUserId",
    "{controller}/{action}/{userId}",
    new { controller = "Playlist", action = "GetPlaylistsByUserId" },
    new { httpMethod = new HttpMethodConstraint("GET") }
);

Answer 4

routes.MapRoute(
    "getPlaylistsByUserId",
    "{controller}/{userId}",
    new { controller = "Playlist", action = "GetPlaylistsByUserId" },
    new { httpMethod = new HttpMethodConstraint("GET") }
);

应改为

routes.MapRoute(
    "getPlaylistsByUserId",
    "{controller}/GetPlaylistsByUserId/{userId}",
    new { controller = "Playlist", action = "GetPlaylistsByUserId" },
    new { httpMethod = new HttpMethodConstraint("GET") }
);