asp.net页面出错时的处理方法

1.第一种做法,在Web.config文件配置

<system.web>
      
<customErrors defaultRedirect="~/ErrorPage.aspx" 
                     mode
="RemoteOnly">
      
</customErrors>
</system.web>

 

  defaultRedirect属性用来指明当aspx页面发生了未处理错误时导向的页面; 但Asp.net使用重定向机制来重新导航错误页面,这样错误信息就会丢失,也就是说我们用Server.GetLastError()获得的Exception对象始终是空的。虽然可以提示用户出错,并提供一个返回出错页面的链接,却不能给管理员一个很好的错误提示。

2.第二种做法:在global文件里的Application_Error方法中处理

代码
protected void Application_Error(Object sender, EventArgs e)
        {
            Exception ex
=Server.GetLastError().GetBaseException();

            string errorTime="发生时间:"+DateTime.Now.ToString();
            string errorAddress="发生异常页:"+Request.Url.ToString();
            
string errorInfo="异常信息:"+ex.Message;
            
string errorSource="错误源:"+ex.Source;
            
string errorTrace="堆栈信息:"+ex.StackTrace;
            Server.ClearError();

            System.IO.StreamWriter writer
=null;
            
try
            {
                
lock(this)
                {
                    
//写入日志 
                    string year=DateTime.Now.Year.ToString();
                    
string month=DateTime.Now.Month.ToString();
                    
string day=DateTime.Now.Day.ToString();
                    
string path=string.Empty;
                    
string filename=DateTime.Now.ToString("yyyyMMdd")+".txt";
                    path
=Server.MapPath("~/Error/")+year+month+day;
                    
if(!Directory.Exists(path))
                    {
                        Directory.CreateDirectory(path);
                    }
                    System.IO.FileInfo file
=new FileInfo(path+"/"+filename);
                    writer
=new StreamWriter(file.FullName,true);//文件不在则创建,true表示追加
                    writer.WriteLine("用户IP:"+Request.UserHostAddress);
                    writer.WriteLine(errorTime);
                    writer.WriteLine(errorAddress);
                    writer.WriteLine(errorInfo);
                    writer.WriteLine(errorSource);
                    writer.WriteLine(errorTrace);
                    writer.WriteLine(
"-------------------------------------------------------");

                }
            }
            
finally
            {
                
if(writer!=null)
                {
                    writer.Close();
                }
            }
            Server.Transfer(
"~/ErrorPage.aspx"); //转到显示友好错误的页面

        }

然后在ErrorPage.aspx页面显示一些好友的提示信息.

3.第三种做法:在Page_Error事件里面处理

代码
        private void Page_Load(object sender, System.EventArgs e)
        {
            
throw(new ArgumentNullException());
        }

        
public void Page_Error(object sender,EventArgs e)
        {
            Exception ex
=Server.GetLastError().GetBaseException();

            
string errorTime="发生时间:"+DateTime.Now.ToString();
            
string errorAddress="发生异常页:"+Request.Url.ToString();
            
string errorInfo="异常信息:"+ex.Message;
            
string errorSource="错误源:"+ex.Source;
            
string errorTrace="堆栈信息:"+ex.StackTrace;

            Server.ClearError();

            System.IO.StreamWriter writer
=null;
            
try
            {
                
lock(this)
                {
                    
//写入日志 
                    string year=DateTime.Now.Year.ToString();
                    
string month=DateTime.Now.Month.ToString();
                    
string day=DateTime.Now.Day.ToString();
                    
string path=string.Empty;
                    
string filename=DateTime.Now.ToString("yyyyMMdd")+".txt";
                    path
=Server.MapPath("~/Error/")+year+month+day;
                    
if(!Directory.Exists(path))
                    {
                        Directory.CreateDirectory(path);
                    }
                    System.IO.FileInfo file
=new FileInfo(path+"/"+filename);
                    writer
=new StreamWriter(file.FullName,true);//文件不在则创建,true表示追加
                    writer.WriteLine("用户IP:"+Request.UserHostAddress);
                    writer.WriteLine(errorTime);
                    writer.WriteLine(errorAddress);
                    writer.WriteLine(errorInfo);
                    writer.WriteLine(errorSource);
                    writer.WriteLine(errorTrace);
                    writer.WriteLine(
"-------------------------------------------");

                }
            }
            
finally
            {
                
if(writer!=null)
                {
                    writer.Close();
                }
            }

            Server.ClearError();
//防止错误继续到要被处理的 Application_Error 事件中。
            Response.Redirect("~/ErrorPage.aspx");
            
        }

 

我经常的做法是使用第二种方法,然后再写一个发送短信的方法(调用移动的短信借口),这样的话程序出错的时候,管理员可以收到程序出错的信息。

posted @ 2010-05-18 09:39  awp110  阅读(196)  评论(0编辑  收藏  举报