klfo 发表于 2013-2-7 02:03:55

ASP.NET页面错误处理及邮件发送简易方案

1包含页面:Default.aspx,Error.aspx
2.思路:Global.asax页面负责捕捉系统中除去try以外发生的页面错误。并将错信息发送给Error.aspx页面。Error.aspx页面负责显示错误信息,并将错误信息发送到指定邮箱。
3.具体代码:
Default.aspx页面
 
Code
html部分:
<body>
    <form. id="form1" runat="server">
    <div>
   
    </div>
    <asp:DropDownList ID="DropDownList1" runat="server" DataTextField="Name"
        DataValueField="id">
    </asp:DropDownList>
    <asp:Button ID="Button1" runat="server" Text="Button" nClick="Button1_Click" />
    </form>
</body>
cs部分:
protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            DataTable dt = new DataTable();
            dt.Columns.Add(new DataColumn("id",typeof(string)));
            dt.Columns.Add(new DataColumn("name", typeof(string)));
            dt.Rows.Add(dt.NewRow());
            dt.Rows = "1";
            dt.Rows = "1";
            this.DropDownList1.DataSource = dt;
            this.DropDownList1.DataBind();
        }
    }
 protected void Button1_Click(object sender, EventArgs e)
    {
        this.DropDownList1.SelectedValue = "fff";
    }
Global.asax代码:
Code
<%@ Import Namespace ="System.Web" %>
 void Application_Error(object sender, EventArgs e)
    {
        Exception  LastError = Server.GetLastError();
        if (LastError != null)
            Response.Redirect("error.aspx?error="+LastError.InnerException.ToString().Replace("\r\n",""));
    }
Error.aspx代码:
 
Code
html部分:
<body>
    <form. id="form1" runat="server">
    <div style="background-color: #99CCFF; height: 252px;">
        抱歉:发生了错误。
     <div style="background-color:Silver"><asp:Label ID="Label1" runat="server"
            Text="Label"></asp:Label></div>
   
    </div>
    </form>
</body>
cs部分:
添加命名空间:
using System.Net.Mail;
protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            if (Request["error"] != null && Request["error"].Length > 0)
            {
                this.Label1.Text = Request["error"];
                SendMail(Request["error"]);
            }
        }
    }
 public void SendMail(string body)
    {
        MailMessage myMail = new MailMessage();
       
        myMail.From = new MailAddress("myaccount@test.com");
        myMail.To.Add("test@test.com");
        myMail.Subject = "Error";
        myMail.Priority = MailPriority.Normal;
        myMail.BodyEncoding = System.Text.Encoding.UTF8;
        myMail.Body = body;
        SmtpClient smtp = new SmtpClient();
        smtp.Host = "mail";
        try
        {
            smtp.Send(myMail);
        }
        catch (SmtpException ex)
        {
            this.Label1.Text = "邮件发送失败。\r\n"+ex.Message;
        }
    }
 
至此,系统即可实现错误捕捉显示,及邮件发生功能。
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