Web API 2路由属性不起作用

Question

我正在使用.NET 4.5的最终版本和Web API 2(在Visual Studio 2013中).我一直在使用这个文档作为参考,但无济于事.

我有几条基本路线

api/providers
api/locations
api/specialties

并且每个方法都有类似的

Get()
Get(int id)
Get(string keyword)
Autocomplete(string keyword)
Search(string zipcode, string name, int radius, [...])

理想情况下,我希望URL最终会像

• / api/locations/12345(获取位置12345)
• / api/locations/clinical(获取名称中带有"临床"的位置)
• / api/locations/autocomplete？keyword = clinical (获取名称中带有"clinical"的位置的精简Id + Name对象)
• / api/locations/search？zipcode = 12345&radius = 20&name = clinical (获取位于邮编12345之内20英里内的位置,名称中带有"临床")

在下面的代码块中,Get方法和Search工作按需要,但Autocomplete没有.应该注意的是,我在多个控制器中有类似的命名方法.我究竟做错了什么？(另外,Name =财产到底是什么？)

/// <summary>
/// This is the API used to interact with location information.
/// </summary>
[RoutePrefix("api/locations")]
public class LocationController : ApiController
{
    private ProviderEntities db = new ProviderEntities();

    private static readonly Expression<Func<Location, LocationAutocompleteDto>> AsLocationAutocompleteDto =
        x => new LocationAutocompleteDto
        {
            Id = x.Id,
            Name = x.Name
        };

    /// <summary>
    /// Get ALL locations.
    /// </summary>
    [Route("")]
    public IQueryable<Location> Get()
    {
        return db.Locations.AsQueryable();
    }

    /// <summary>
    /// Get a specific location.
    /// </summary>
    /// <param name="id">The ID of a particular location.</param>
    [Route("{id:int}")]
    public IQueryable<Location> Get(int id)
    {
        return db.Locations.Where(l => l.Id == id);
    }

    /// <summary>
    /// Get all locations that contain a keyword.
    /// </summary>
    /// <param name="keyword">The keyword to search for in a location name.</param>
    [Route("{keyword:alpha}")]
    public IQueryable<Location> Get(string keyword)
    {
        return db.Locations.Where(l => l.Name.Contains(keyword)).OrderBy(l => l.Name);
    }

    [Route("search", Name = "locationsearch")]
    public string Search(string zipcode = null, string latitude = null, string longitude = null)
    {
        if (zipcode != null) return "zipcode";
        if (latitude != null && longitude != null) return "lat/long";
        else
            return "invalid search";
    }

    /// <summary>
    /// Autocomplete service for locations, returns simple Id/Name pairs.
    /// </summary>
    /// <param name="keyword">The keyword to search on.</param>
    [Route("autocomplete/{keyword:alpha}", Name = "locationautocomplete")]
    public IQueryable<LocationAutocompleteDto> Autocomplete(string keyword)
    {
        // validate the inputs
        if (string.IsNullOrEmpty(keyword))
            return null;

        IQueryable<Location> results = from l in db.Locations
                                       where l.Name.Contains(keyword)
                                       select l;

        return results.Select(AsLocationAutocompleteDto);
    }

这个东西的最新版本似乎没有很多社区支持.

编辑(带答案)

简单地更换

[Route("autocomplete/{keyword:alpha}", Name = "locationautocomplete")]

同

[Route("autocomplete"), Route("autocomplete/{keyword:alpha}", HttpGet()]

它完美无缺.

Answer 1

您是否尝试对搜索和自动完成操作执行GET请求？如果是,那么您需要使用System.Web.Http.HttpGet属性进行装饰.如果某个操作没有像Get,Put,Post,Delete等动词作为前缀,则默认情况下Web API会假定为POST.我猜你正在收到405方法不允许......正确吗？

在链接生成(Url.Link)的情况下,Name属性非常有用,您需要指定名称