之前我写过一篇关于ASP.NET全局异常处理的文章(http://www.cnblogs.com/snowdream/archive/2008/07/03/1234402.html)。在ASP.NET MVC中,进行异常处理变的更为简单。
方法一:重写OnException
在需要进行异常处理的Controller中重写OnException。如果整个程序都需要异常处理,可以先写一个BaseController,其他所有Controller都继承它,然后在BaseController中重写OnException。
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protected override void OnException(ExceptionContext filterContext)
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{
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// 此处进行异常记录,可以记录到数据库或文本,也可以使用其他日志记录组件。
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// 通过filterContext.Exception来获取这个异常。
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string filePath = @"D:\Temp\Exceptions.txt";
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StreamWriter sw = System.IO.File.AppendText(filePath);
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sw.Write(filterContext.Exception.Message);
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sw.Close();
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// 执行基类中的OnException
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base.OnException(filterContext);
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// 重定向到异常显示页或执行其他异常处理方法
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Response.Redirect("/");
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}
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方法二:添加ActionFilter
如果只是想针对某个Action使用异常处理那就不能重写Controller的OnException了的。但是我们可以先写一个ExceptionLogAttribute。
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namespace Snowdream.Demo.MvcExceptionLogging
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{
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public class ExceptionLogAttribute:HandleErrorAttribute
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{
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public override void OnException(ExceptionContext filterContext)
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{
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string filePath = @"D:\Temp\Exceptions.txt";
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StreamWriter sw = System.IO.File.AppendText(filePath);
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sw.Write(filterContext.Exception.Message);
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sw.Close();
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base.OnException(filterContext);
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filterContext.HttpContext.Response.Redirect("/");
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}
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}
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}
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[ExceptionLog]
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public ActionResult Index()
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{
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ViewData["Message"] = "Welcome to ASP.NET MVC!";
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return View();
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}
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示例下载
本文适用于 ASP.NET MVC 1.0