我的 ApiKey 验证示例代码如下(我使用的是 MVC4 web api RC):
public class ApiKeyFilter : ActionFilterAttribute
{
public override void OnActionExecuting(HttpActionContext context)
{
//read api key from query string
string querystring = context.Request.RequestUri.Query;
string apikey = HttpUtility.ParseQueryString(querystring).Get("apikey");
//if no api key supplied, send out validation message
if (string.IsNullOrWhiteSpace(apikey))
{
var response = context.Request.CreateResponse(HttpStatusCode.Unauthorized, new Error { Message = "You can't use the API without the key." });
throw new HttpResponseException(response);
}
else
{
try
{
GetUser(decodedString); //error occurred here
}
catch (Exception)
{
var response = context.Request.CreateResponse(HttpStatusCode.Unauthorized, new Error { Message = "User with api key is not valid" });
throw new HttpResponseException(response);
}
}
}
}
这里的问题是 Catch 块语句。我只是想向用户发送自定义错误消息。但是什么都没有发送。它显示一个空白屏幕
但是,以下语句运行良好并正确发送验证错误消息:
if (string.IsNullOrWhiteSpace(apikey))
{
var response = context.Request.CreateResponse(HttpStatusCode.Unauthorized, new Error { Message = "You can't use the API without the key." });
throw new HttpResponseException(response);
}
有什么我做错了吗。