基本上我有一个带有scriptmanager和一个按钮的webform，用于更新从类webspider返回的结果（web spider搜索给定url的断开链接）。我正在尝试将代码转换为mvc并且已经实现了大部分内容，除了用粗体突出显示的代码，因为我在mvc视图中没有scriptmanager，有些人可以给我一些关于如何做到这一点的指示，非常感谢。 -
default.aspx -
<%@ Page Title="Home Page" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="_check404._Default" %>
<asp:Content runat="server" ID="FeaturedContent" ContentPlaceHolderID="FeaturedContent">
<section class="featured">
<div class="content-wrapper">
<hgroup class="title">
<h1><%: Title %>.</h1>
<h2>Modify this template to jump-start your ASP.NET application.</h2>
</hgroup>
<p>
To learn more about ASP.NET, visit <a href="http://asp.net" title="ASP.NET Website">http://asp.net</a>.
The page features <mark>videos, tutorials, and samples</mark> to help you get the most from ASP.NET.
If you have any questions about ASP.NET visit
<a href="http://forums.asp.net/18.aspx" title="ASP.NET Forum">our forums</a>.
</p>
</div>
</section>
</asp:Content>
<asp:Content runat="server" ID="BodyContent" ContentPlaceHolderID="MainContent">
<h3>Search results:</h3>
<asp:Label ID="lblTot" runat="server" />
<asp:Label runat="server" ID="lblStatus" />
<asp:UpdatePanel runat="server" ID="pnlLinks">
<ContentTemplate> -->
<asp:GridView runat="server" ID="grvLinks" AutoGenerateColumns="false">
<Columns>
<asp:BoundField DataField="NavigateUrl" HeaderText="Url" />
<asp:ButtonField DataTextField="Status" HeaderText="Status" />
</Columns>
</asp:GridView>
<asp:Button runat="server" ID="btnUpdateResults" Text="Update Results" />
</ContentTemplate>
</asp:UpdatePanel>
default.aspx.cs -
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using _check404.Spider;
using System.Net;
namespace _check404
{
public partial class _Default : Page
{
private string script = @"setTimeout(""__doPostBack('{0}','')"", 5000);";
private WebSpider WebSpider
{
get { return (WebSpider)(Session["webSpider"] ?? (Session["webSpider"] = new WebSpider())); }
}
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
if (!this.WebSpider.IsRunning)
{
string url = "http://bbc.co.uk";
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
if (response.StatusCode == HttpStatusCode.OK)
this.WebSpider.Execute(url);
lblTot.Text = WebSpider.Tot.ToString();
}
//////////////////////////以下代码是我要转换的内容
if (this.WebSpider.IsRunning)
{
this.lblStatus.Text = "Processing...";
ScriptManager.RegisterStartupScript(this, this.GetType(),
this.GetType().Name, string.Format(script, this.btnUpdateResults.ClientID), true);
}
/////////////////////////////////////////////// ////////////////////////////////////////
this.grvLinks.DataSource = this.WebSpider.Links;
this.grvLinks.DataBind();
}
}
}
spider.cs -
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Text.RegularExpressions;
using System.Threading;
using System.Web;
namespace _check404.Spider
{
public class WebSpider
{
public int Tot { get; set; }
const int LIMIT = 10;
string[] invalidTypes = { ".zip", ".doc", ".css", ".pdf", ".xls", ".txt", ".js", ".ico" };
public List<Link> Links;
public bool IsRunning { get; set; }
public WebSpider()
{
this.Links = new List<Link>();
}
public void Execute(string url)
{
this.Links.Clear();
this.Links.Add(new Link() { Status = HttpStatusCode.OK, NavigateUrl = url });
this.IsRunning = true;
WaitCallback item = delegate(object state) { this.FindLinks((UrlState)state); };
ThreadPool.QueueUserWorkItem(item, new UrlState() { Url = url, Level = 0 });
Tot = Links.Count();
}
public void FindLinks(UrlState state)
{
try
{
string html = new WebClient().DownloadString(state.Url);
MatchCollection matches = Regex.Matches(html, "href[ ]*=[ ]*['|\"][^\"'\r\n]*['|\"]");
foreach (Match match in matches)
{
string value = match.Value;
value = Regex.Replace(value, "(href[ ]*=[ ]*')|(href[ ]*=[ ]*\")", string.Empty);
if (value.EndsWith("\"") || value.EndsWith("'"))
value = value.Remove(value.Length - 1, 1);
if (!Regex.Match(value, @"\((.*)\)").Success)
{
if (!value.Contains("http:"))
{
Uri baseUri = new Uri(state.Url);
Uri absoluteUri = new Uri(baseUri, value);
value = absoluteUri.ToString();
}
if (this.Links.Exists(x => x.NavigateUrl.Equals(value))) continue;
try
{
bool validLink = true;
foreach (string invalidType in invalidTypes)
{
string v = value.ToLower();
if (v.EndsWith(invalidType) || v.Contains(string.Format("{0}?", invalidType)))
{
validLink = false;
break;
}
}
if (validLink)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(value);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
this.Links.Add(new Link() { Status = response.StatusCode, NavigateUrl = value });
if (response.StatusCode == HttpStatusCode.OK && state.Level < LIMIT)
{
WaitCallback item = delegate(object s) { FindLinks((UrlState)s); };
ThreadPool.QueueUserWorkItem(
item, new UrlState() { Url = value, Level = state.Level + 1 });
}
}
}
catch
{
this.Links.Add(new Link()
{
Status = HttpStatusCode.ExpectationFailed,
NavigateUrl = value
});
}
}
}
}
catch
{
///
/// If downloading times out, just ignore...
///
}
}
}
}
答案 0 :(得分：1)
如果蜘蛛作业正在运行，您似乎试图在5秒后自动单击按钮。
所有脚本管理器正在做的是在生成标记时嵌入包含javascript的标记。
我想说最简单的方法是在模型中添加一个属性。
class MyModel
{
public bool SpiderRunning { get; set; }
}
然后在你的控制器中设置它：
model.SpiderRunning = this.WebSpider.IsRunning
然后在您的视图中，如果此值为true，则仅将脚本添加到页面中：
@if(Model.SpiderRunning)
{
<script>setTimeout(function(){document.getElementById("btnUpdateResults").click();}, 5000);</script>
}