[英]ASP.Net Web API Return Specifc Error Data on Exception?
.NET 4.5.2,具有以下路由信息设置:
public void Configuration( IAppBuilder appBuilder )
{
var conf = new HttpConfiguration();
conf.Routes.MapHttpRoute(
name: "DefaultApi" ,
routeTemplate: "service/2014/{controller}/{appKey}" ,
defaults: new { appKey = RouteParameter.Optional }
);
appBuilder.UseWebApi( conf );
}
并带有以下控制器代码:
public HttpResponseMessage Get( string appKey , string qs1 , string qs2 )
{
var remess = new HttpResponseMessage { RequestMessage = Request , StatusCode = HttpStatusCode.OK };
if ( true == new BusinessClass().ValueCheck( appKey , qs1 , qs2 ) )
{
remess.Content = new StringContent( "1" , Encoding.UTF8 , "text/plain");
}
else
{
remess.Content = new StringContent( "0" , Encoding.UTF8 , "text/plain");
}
return remess;
}
如果我使用此URI,则它将根据业务逻辑正确返回“ 0”或“ 1”:
http://localhost:963/service/2014/foo/appgo1?qs1=a&qs2=b
如果我使用此URI(不使用querystring值):
http://localhost:963/service/2014/foo/appgo1
我收到了一个框架控制的消息:
<Error> <Message> No HTTP resource was found that matches the request
URI 'http://localhoost:963/service/2014/foo/appgo1'.
</Message> <MessageDetail> No action was found on the controller
'foo' that matches the request. </MessageDetail> </Error>
仅对于此控制器,我想捕获querystring参数错误的事实,并返回-1。 还有另一个控制器也不使用querystring参数。 有人可以引导我朝正确的方向前进吗?
谢谢。
尽管它确实有效,但这并不是最优雅的解决方案:
public HttpResponseMessage Get(string appKey, string qs1 = null, string qs2 = null)
{
var remess = new HttpResponseMessage { RequestMessage = Request, StatusCode = HttpStatusCode.OK };
if (qs1 == null || qs2 == null)
{
remess.Content = new StringContent("-1", Encoding.UTF8, "text/plain");
}
else if ( true == new BusinessClass().ValueCheck( appKey , qs1 , qs2 ) )
{
remess.Content = new StringContent("1", Encoding.UTF8, "text/plain");
}
else
{
remess.Content = new StringContent("0", Encoding.UTF8, "text/plain");
}
return remess;
}
您基本上将查询字符串参数设为可选,然后检查其中一个是否为null以返回-1代码。 否则,请进行业务逻辑检查。
您还可以使用默认的GET操作来捕获所有到控制器的获取并在那里返回-1。
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