/// <summary>
/// 进行异常处理（由异常管理器调用）
/// </summary>
/// <param name="e">异常</param>
/// <param name="level">异常等级（传递给日志记录器处理）</param>
/// <returns>处理结果，将影响下面的处理器</returns>
/// <remarks>
/// 异常管理器将根据返回的结果进行下一步的处理，约定：<br />
/// 返回的结果中，ResultNo值：
/// <list type="bullet">
/// <item><description>
/// 小于0：表示处理异常，管理器将立即退出异常处理
/// </description></item>
/// <item><description>
/// 0：处理正常
/// </description></item>
/// <item><description>
/// 1：已处理，需要下一个异常处理器进一步处理，<br />
/// 此时ResultAttachObject为返回的异常（可能与传入的异常是不一致的）
/// </description></item>
/// <item><description>
/// 2：已处理，需要重新轮询异常处理器进行处理<br />
/// 此时ResultAttachObject为返回的异常（可能与传入的异常是不一致的）<br />
/// 此时异常管理器将重新进行异常处理
/// </description></item>
/// </list>
/// </remarks>
public override IAOPResult Handle(Exception e, int level)
{
var ex = e as HttpWebException;
if (ex != null)
{
var app = ex.HttpAppInstance;
var sourceException = ExceptionBase.FindSourceException(ex);
//忽略某些状态码，此时不记录日志
var writeLog = true;
var ihcs = this.IgnoreHttpCodes;
if (!string.IsNullOrEmpty(ignoreHttpCodes))
{
var he = sourceException as HttpException;
if (he != null)
{
var hc = "," + he.GetHttpCode() + ",";
if (ihcs.Contains(hc))
{
writeLog = false;
}
}
}
if (writeLog)
{
this.LogService.WriteLog(this, level, this.GetFormattedString(sourceException, level, app));
}
//是否启用自定义信息
if (!this.IsCustomEnabled(ex))
{
goto EXIT;
}
app.Server.ClearError();
app.Response.Clear();
var fileExists = false;
if (this.DefaultRedirectUrl != null && this.CheckRedirectFileExists)
{
var filePath = WebHelper.UrlCombine(app.Request.ApplicationPath, this.DefaultRedirectUrl, false);
fileExists = File.Exists(app.Request.MapPath(filePath));
}
if (!fileExists && this.CheckRedirectFileExists)
{
this.LogService.WriteLog(this.GetType(), LogLevel.WARN, "WARNING: The file defined in HttpWebExceptionHandler's defaultRedirectUrl do not exists, please check it!");
}
if (!string.IsNullOrEmpty(this.DefaultRedirectUrl) && (fileExists || !this.CheckRedirectFileExists) && !WebHelper.IsUrlEquals(this.DefaultRedirectUrl, app.Request))
{
app.Response.Redirect(string.Format(this.DefaultRedirectUrl, sourceException.GetHashCode(), 0, level, HttpUtility.UrlEncode(HttpUtility.HtmlEncode(sourceException.Message), app.Request.ContentEncoding), HttpUtility.UrlEncode(HttpUtility.HtmlEncode(app.Request.Url.PathAndQuery), app.Request.ContentEncoding)), true);
}
else
{
app.Response.Write(this.GetDisplayMessage(ex));
app.CompleteRequest();
}
}
EXIT:
return(AOPResult.Success());
}
/// <summary>
/// WEB应用程序异常捕捉
/// </summary>
private static void WebOnError(object sender, EventArgs e)
{
var httpApp = (HttpApplication)sender;
var ex = httpApp.Server.GetLastError();
var ex0 = ExceptionBase.FindSourceException(ex);
if (ex0 is FileNotFoundException)
{
return;
}
string message = null;
if (ex != null)
{
message = ex.Message;
}
ExceptionService.Publish(new HttpWebException(message, ex, httpApp));
}