ASP.NET MVC中异常Exception拦截的深入理解_实用技巧_

 public class HandlerErrorAttribute : HandleErrorAttribute { /// 
 /// 控制器方法中出现异常，会调用该方法捕获异常 /// 
 /// 提供使用 public override void OnException(ExceptionContext context) { WriteLog(context); base.OnException(context); context.ExceptionHandled = true; if (context.Exception is UserFriendlyException) { context.HttpContext.Response.StatusCode = (int)HttpStatusCode.OK; context.Result = new ContentResult { Content = new AjaxResult { type = ResultType.error, message = context.Exception.Message }.ToJson() }; } else if (context.Exception is NoAuthorizeException) { context.HttpContext.Response.StatusCode = (int)HttpStatusCode.Unauthorized; if (!context.HttpContext.Request.IsAjaxRequest()) { context.HttpContext.Response.RedirectToRoute("Default", new { controller = "Error", action = "Error401", errorUrl = context.HttpContext.Request.RawUrl }); } else { context.Result = new ContentResult { Content = context.HttpContext.Request.RawUrl }; } } else { context.HttpContext.Response.StatusCode = (int)HttpStatusCode.InternalServerError; ExceptionMessage error = new ExceptionMessage(context.Exception); var s = error.ToJson(); if (!context.HttpContext.Request.IsAjaxRequest()) { context.HttpContext.Response.RedirectToRoute("Default", new { controller = "Error", action = "Error500", data = WebHelper.UrlEncode(s) }); } else { context.Result = new ContentResult { Content = WebHelper.UrlEncode(s) }; } } } /// 
 /// 写入日志（log4net） /// 
 /// 提供使用 private void WriteLog(ExceptionContext context) { if (context == null) return; if (context.Exception is NoAuthorizeException || context.Exception is UserFriendlyException) { //友好错误提示,未授权错误提示，记录警告日志 LogHelper.Warn(context.Exception.Message); } else { //异常错误， LogHelper.Error(context.Exception); ////TODO :写入错误日志到数据库 } } }

 public class FilterConfig { public static void RegisterGlobalFilters(GlobalFilterCollection filters) { filters.Add(new HandlerErrorAttribute()); } }

 /// 
 /// 没有被授权的异常 /// 
 public class NoAuthorizeException : Exception { public NoAuthorizeException(string message) : base(message) { } }

 throw new NoAuthorizeException("未授权");

 protected void Application_EndRequest() { if (Context.Response.StatusCode == 404) { bool isAjax = new HttpRequestWrapper(Context.Request).IsAjaxRequest(); if (isAjax) { Response.Clear(); Response.Write(Context.Request.RawUrl); } else { Response.RedirectToRoute("Default", new { controller = "Error", action = "Error404", errorUrl = Context.Request.RawUrl }); } } }

 /// 
 /// 异常错误信息 /// 
 [Serializable] public class ExceptionMessage { public ExceptionMessage() { } /// 
 /// 构造函数 /// 默认显示异常页面 /// 
 /// 异常对象 public ExceptionMessage(Exception ex) :this(ex, true) { } /// 
 /// 构造函数 /// 
 /// 异常对象 /// 是否显示异常页面 public ExceptionMessage(Exception ex, bool isShowException) { MsgType = ex.GetType().Name; Message = ex.InnerException != null ? ex.InnerException.Message : ex.Message; StackTrace = ex.StackTrace.Length > 300 ? ex.StackTrace.Substring(0, 300) : ex.StackTrace; Source = ex.Source; Time = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"); Assembly = ex.TargetSite.Module.Assembly.FullName; Method = ex.TargetSite.Name; ShowException = isShowException; var request = HttpContext.Current.Request; IP = Net.Ip; UserAgent = request.UserAgent; Path = request.Path; HttpMethod = request.HttpMethod; } /// 
 /// 消息类型 /// 
 public string MsgType { get; set; } /// 
 /// 消息内容 /// 
 public string Message { get; set; } /// 
 /// 请求路径 /// 
 public string Path { get; set; } /// 
 /// 程序集名称 /// 
 public string Assembly { get; set; } /// 
 /// 异常参数 /// 
 public string ActionArguments { get; set; } /// 
 /// 请求类型 /// 
 public string HttpMethod { get; set; } /// 
 /// 异常堆栈 /// 
 public string StackTrace { get; set; } /// 
 /// 异常源 /// 
 public string Source { get; set; } /// 
 /// 服务器IP 端口 /// 
 public string IP { get; set; } /// 
 /// 客户端浏览器标识 /// 
 public string UserAgent { get; set; } /// 
 /// 是否显示异常界面 /// 
 public bool ShowException { get; set; } /// 
 /// 异常发生时间 /// 
 public string Time { get; set; } /// 
 /// 异常发生方法 /// 
 public string Method { get; set; } }

 throw new Exception("出错了");

 /// 
 /// 用户友好异常 /// 
 public class UserFriendlyException : Exception { public UserFriendlyException(string message) : base(message) { } }

 /// 
 /// 表示Ajax操作结果 /// 
 public class AjaxResult { /// 
 /// 获取 Ajax操作结果类型 /// 
 public ResultType type { get; set; } /// 
 /// 获取 Ajax操作结果编码 /// 
 public int errorcode { get; set; } /// 
 /// 获取 消息内容 /// 
 public string message { get; set; } /// 
 /// 获取 返回数据 /// 
 public object resultdata { get; set; } } /// 
 /// 表示 ajax 操作结果类型的枚举 /// 
 public enum ResultType { /// 
 /// 消息结果类型 /// 
 info = 0, /// 
 /// 成功结果类型 /// 
 success = 1, /// 
 /// 警告结果类型 /// 
 warning = 2, /// 
 /// 异常结果类型 /// 
 error = 3 }

 (function ($) { "use strict"; $.httpCode = { success: "1", fail: "3", }; // http 通信异常的时候调用此方法 $.httpErrorLog = function (msg) { console.log('=====>' + new Date().getTime() + '<====='); console.log(msg); }; // ajax请求错误处理 $.httpError = function (xhr, textStatus, errorThrown) { if (xhr.status == 401) { location.href = "/Error/Error401?errorUrl=" + xhr.responseText; } if (xhr.status == 404) { location.href = "/Error/Error404?errorUrl=" + xhr.responseText; } if (xhr.status == 500) { location.href = "/Error/Error500?data=" + xhr.responseText; } }; /* get请求方法（异步）: * url地址, param参数, callback回调函数 beforeSend 请求之前回调函数, complete 请求完成之后回调函数 * 考虑到get请求一般将参数与url拼接一起传递，所以将param参数放置最后 * 返回AjaxResult结果对象 */ $.httpAsyncGet = function (url, callback, beforeSend, complete, param) { $.ajax({ url: url, data: param, type: "GET", dataType: "json", async: true, cache: false, success: function (data) { if ($.isFunction(callback)) callback(data); }, error: function (XMLHttpRequest, textStatus, errorThrown) { $.httpError(XMLHttpRequest, textStatus, errorThrown); }, beforeSend: function () { if (!!beforeSend) beforeSend(); }, complete: function () { if (!!complete) complete(); } }); }; /* get请求方法（同步）: * url地址,param参数 * 返回实体数据对象 */ $.httpGet = function (url, param) { var res = {}; $.ajax({ url: url, data: param, type: "GET", dataType: "json", async: false, cache: false, success: function (data) { res = data; }, error: function (XMLHttpRequest, textStatus, errorThrown) { $.httpError(XMLHttpRequest, textStatus, errorThrown); }, }); return res; }; /* post请求方法（异步）: * url地址, param参数, callback回调函数 beforeSend 请求之前回调函数, complete 请求完成之后回调函数 * 返回AjaxResult结果对象 */ $.httpAsyncPost = function (url, param, callback, beforeSend, complete) { $.ajax({ url: url, data: param, type: "POST", dataType: "json", async: true, cache: false, success: function (data) { if ($.isFunction(callback)) callback(data); }, error: function (XMLHttpRequest, textSta
                
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