利用WebClient和WebRequest类获得网页源代码C#
文/不详 出处：网络
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" C>
<meta name="CODE_LANGUAGE" C>
<meta name="vs_defaultClientScript" c>
<meta name="vs_targetSchema" c
http://schemas.microsoft.com/intellisense/ie5" target=_blank>
http://schemas.microsoft.com/intellisense/ie5";;>
</HEAD>
<body MS_POSITI>
<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.cs
using 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;
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;
private string PageUrl = "";
private void Page_Load(object sender, System.EventArgs e)
{}
#region Web Form Designer generated codeoverride
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.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.DefaultCredentials;
///方法一：Byte[] pageData = wc.DownloadData(PageUrl);ContentHtml.Text = Encoding.Default.GetString(pageData);
/// 方法二：/// ***************代码开始**********///
Stream resStream = wc.OpenRead(PageUrl);///
StreamReader sr = new StreamReader(resStream,System.Text.Encoding.Default);///
ContentHtml.Text = sr.ReadToEnd();/// resStream.Close();
/// **************代码结束********///
wc.Dispose(); }
private void WebRequestButton_Click(object sender, System.EventArgs e)
{PageUrl = UrlText.Text;WebRequest request = WebRequest.Create(PageUrl);WebResponse response = request.GetResponse();
Stream resStream = response.GetResponseStream();
StreamReader sr = new StreamReader(resStream, System.Text.Encoding.Default);ContentHtml.Text = sr.ReadToEnd();resStream.Close();
sr.Close();}}}
| 感谢原创者的辛勤劳动，希望对您有所帮助，转载请注明原出处。 |
