利用.NET框架提供的 WebClient类 和 WebRequest类,我们可以很轻易地得到给定URL地址的源代码,很简单,以下是C#的完整的例子.
日期：2011-06-24 浏览次数：20566 次
GetPageHtml.aspx<%...@ Page language="c#" validateRequest = "false" Codebehind="GetPageHtml.aspx.cs"
AutoEventWireup="false" Inherits="eMeng.Exam.GetPageHtml" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>得到网页源代码</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio 7.0">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="aspNetBuffer" method="post" runat="server">
<div align="center" style="FONT-WEIGHT: bold">得到任意网页源代码</div>
<asp:TextBox id="UrlText" runat="server" Width="400px">http://dotnet.aspx.cc/content.aspx
</asp:TextBox>
<asp:Button id="WebClientButton" Runat="server" Text="用WebClient得到"></asp:Button>
<asp:Button id="WebRequestButton" runat="server" Text="用WebRequest得到"></asp:Button>
<br>
<asp:TextBox id="ContentHtml" runat="server" Width="100%" Height="360px" TextMode="MultiLine">
</asp:TextBox>
</form>
</body>
</HTML>
GetPageHtml.aspx.csusing System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Net;
using System.Text;
using System.Text.RegularExpressions;
namespace eMeng.Exam
...{
/**//// <summary>
/// GetPageHtml 的摘要说明。
/// </summary>
public class GetPageHtml : System.Web.UI.Page
...{
protected System.Web.UI.WebControls.Button WebClientButton;
protected System.Web.UI.WebControls.Button WebRequestButton;
protected System.Web.UI.WebControls.TextBox ContentHtml;
protected System.Web.UI.WebControls.TextBox UrlText;
protected System.Web.UI.WebControls.Button GetText;
private string PageUrl = "";
private void Page_Load(object sender, System.EventArgs e)
...{}
Web Form Designer generated code#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
...{
InitializeComponent();
base.OnInit(e);
}
/**//// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
...{
this.WebClientButton.Click += new System.EventHandler(this.WebClientButton_Click);
this.WebRequestButton.Click += new System.EventHandler(this.WebRequestButton_Click);
this.GetText.Click += new System.EventHandler(this.GetText_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void WebClientButton_Click(object sender, System.EventArgs e)
...{
PageUrl = UrlText.Text;
WebClient wc = new WebClient();
wc.Credentials = CredentialCache.DefaultCrede
