我需要向我的Web API发送和接收IList:
API方法:
public IList<int> GetKeywordIdsFromIds([FromUri]List<int> ids)
{
// this methods retuns null or an IList<int>
return _iKeywordService.GetKeywordIdsFromIKeywordIds(ids);
}
通话方式:
public List<int> GetKeywordIdsFromIds(IList<int> iKeywordIds)
{
using (var client = new HttpClient())
{
client.BaseAddress = new Uri(API_BASE_URL);
client.DefaultRequestHeaders.Accept.Clear();
return client.GetAsync(url + iKeywordIds).Result.Content.ReadAsAsync<List<int>>().Result;
}
}
我收到错误:
Exception:Thrown: "No MediaTypeFormatter is available to read an object of type 'List`1' from content with media type 'text/html'." (System.Net.Http.UnsupportedMediaTypeException)
编辑:
我不知道这是否有帮助,但我从IIS日志文件中得到了这个:
2014-03-31 16:11:31 127.0.0.1 GET /api/ikeyword/getkeywordidsfromids/System.Collections.Generic.List`1[System.Int32] - 80 - 127.0.0.1 - 404 0 2 1
EDIT2:
默认路线:
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{action}/{id}",
defaults: new { id = RouteParameter.Optional }
);
答案 0 :(得分:2)
要在查询字符串中使用int
列表调用Web API操作,请执行以下操作...
/api/ikeyword/getkeywordidsfromids?ids=1&ids=3&ids=4
或
/api/ikeyword/getkeywordidsfromids?ids[]=1&ids[]=3&ids[]=4
从IIS日志中,您似乎需要在控制台应用中正确格式化列表并将其附加到URL。你的调用代码应该是这样的......
var parameters = ids.Select(id => string.Format("ids={0}", id)).ToArray();
var url = string.Format("/api/ikeyword/getkeywordidsfromids?{0}", string.Join("&", parameters));