internal static IEnumerable <HttpRequestHandlerBase> LoadControllers(Type Module, string controllerNamespace)
{
List <HttpRequestHandlerBase> ret = new List <HttpRequestHandlerBase>();
if (Module != null && !string.IsNullOrWhiteSpace(controllerNamespace))
{
IEnumerable <Type> controllers = Module.Assembly.GetTypes().Where(type => (type.FullName.StartsWith(controllerNamespace) && type.IsSubclassOf(typeof(HttpRequestHandlerBase))));
foreach (Type type in controllers)
{
object instance = type.Assembly.CreateInstance(type.FullName);
HttpRequestHandlerBase action = instance as HttpRequestHandlerBase;
if (action != null)
{
ret.Add(action);
}
}
}
return(ret);
}
/// <summary>
/// 添加一个路由及请求处理器
/// </summary>
/// <param name="handler"></param>
public void AddPath(HttpRequestHandlerBase handler)
{
PathDictionary.Add(handler.Path, handler);
}
/// <summary>
/// 用户发起请求后的回调
/// </summary>
/// <param name="result">HttpListener</param>
private void ListenerCallback(IAsyncResult result)
{
HttpListener listener = (HttpListener)result.AsyncState;
HttpListenerContext context = null;
try
{
//尝试读取用户请求
context = listener.EndGetContext(result);
}
catch (Exception ex)
{
LogData(ex.Message);
}
if (listener.IsListening)
{
listener.BeginGetContext(ListenerCallback, listener);
}
if (context != null)
{
//读取用户请求成功，放入线程池中执行
ThreadPool.QueueUserWorkItem(h =>
{
HttpListenerRequest request = context.Request; //用户请求
HttpListenerResponse response = context.Response; //请求响应结果
//获取用户请求路径
string requestPath = request.Url.AbsolutePath;
if (!requestPath.EndsWith("/"))
{
requestPath += "/";
}
LogData(string.Format("http request path: {0}, Method: {1}", requestPath, request.HttpMethod));
//对请求路径进行匹配
HttpRequestHandlerBase requestHandler = null;
if (pathDictionary.TryGetValue(requestPath, out requestHandler) && requestHandler != null)
{
//路径匹配成功并且成功找到请求处理器
try
{
//开始处理请求
requestHandler.Handler(request, response);
}
catch (Exception ex)
{
//处理请求时出错
LogData(ex.Message);
//返回HTTP 500错误
Default500(response);
}
}
else
{
//无法匹配请求处理器
//返回HTTP 404错误
Default404(response);
}
//关闭输出流
Stream output = response.OutputStream;
output.Close();
});
}
}
