代码:
//得到指定url页面的源码
public string getUrltoHtml(string Url)
{
string str = string.Empty;
try
{
WebRequest wReq = WebRequest.Create(Url);
WebResponse wResp = wReq.GetResponse();
Stream respStream = wResp.GetResponseStream();
StreamReader reader = new StreamReader(respStream, code);
str = reader.ReadToEnd();
if ( str.Length > 0 )
{
Response.Write(" yes");
}
return str;
}
catch//(Exception ex)
{
Response.Write("no1");
}
return "";
}datalist的会不一样,怎么回事
用WebRequest请求网页产生的HTML代码:
<table id="DataList1" cellspacing="0" rules="all" bordercolor="DarkKhaki" border="1" width="790">直接访问这个网页产生的代码:
<table id="DataList1" cellspacing="0" rules="all" bordercolor="DarkKhaki" border="1" style="border-color:DarkKhaki;border-width:1px;border-style:solid;width:790px;border-collapse:collapse;">
//得到指定url页面的源码
public string getUrltoHtml(string Url)
{
string str = string.Empty;
try
{
WebRequest wReq = WebRequest.Create(Url);
WebResponse wResp = wReq.GetResponse();
Stream respStream = wResp.GetResponseStream();
StreamReader reader = new StreamReader(respStream, code);
str = reader.ReadToEnd();
if ( str.Length > 0 )
{
Response.Write(" yes");
}
return str;
}
catch//(Exception ex)
{
Response.Write("no1");
}
return "";
}datalist的会不一样,怎么回事
用WebRequest请求网页产生的HTML代码:
<table id="DataList1" cellspacing="0" rules="all" bordercolor="DarkKhaki" border="1" width="790">直接访问这个网页产生的代码:
<table id="DataList1" cellspacing="0" rules="all" bordercolor="DarkKhaki" border="1" style="border-color:DarkKhaki;border-width:1px;border-style:solid;width:790px;border-collapse:collapse;">
直接访问可能是按照特定浏览器支持解析过的,而用request输出的应该是按照W3C的HTML标准中包含的,比如说STYLE事实上是扩展的HTML标记,所以request不出来
byte[] bs = wc.DownloadData("http://cneve.com");
string html = Encoding.Default.GetString(bs);
Response.Write(html);
//下面将获得的html保存到本地
string saveFile = Server.MapPath("cneve.htm");
using(TextWriter w = File.CreateText(saveFile))
{
w.WriteLine(html);
}
class webrequest
{
public static string GetHtml(string url)
{
HttpWebRequest myHttpWebRequest=(HttpWebRequest)WebRequest.Create(url);
myHttpWebRequest.Accept=@"image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*";
myHttpWebRequest.UserAgent=@"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.40607; .NET CLR 1.1.4322)";
try
{
HttpWebResponse myHttpWebResponse=(HttpWebResponse)myHttpWebRequest.GetResponse();
Stream streamResponse=myHttpWebResponse.GetResponseStream();
StreamReader streamRead = new StreamReader(streamResponse,Encoding.Default);
string htmlcode=streamRead.ReadToEnd();
streamRead.Close();
streamResponse.Close();
myHttpWebResponse.Close();
return htmlcode; } catch(Exception e)
{
return "error";
}
}
};