c# 获取百度、谷歌关键字排名 - xchit
c# 获取百度、谷歌关键字排名
2010-09-16 16:05
xchit
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//前台
<!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd“>
<html xmlns=”http://www.w3.org/1999/xhtml“>
<head id=”Head1″ runat=”server”>
<title>无标题页</title>
</head>
<body>
<form id=”form1″ runat=”server”>
<div>
<asp:Label ID=”Label1″ runat=”server” Text=”百度关键字排名查询”></asp:Label>
<br />
关键字：
<asp:TextBox ID=”TextBox1″ runat=”server” Width=”308px”>c# 获取百度、谷歌关键字排名</asp:TextBox>
<br />
网址：<asp:TextBox ID=”TextBox2″ runat=”server” Width=”331px”>cnblogs.com</asp:TextBox>
如输入首页域名，包括最后的 “/”<br />
<asp:Button ID=”Button1″ runat=”server” OnClick=”Button1_Click” Text=”查询” />
<asp:Label ID=”lbBaiduResult” runat=”server”></asp:Label><br />
<br />
google关键字排名查询<br />
关键字：<asp:TextBox ID=”TextBox3″ runat=”server” Width=”316px”>c# 获取百度、谷歌关键字排名</asp:TextBox><br />
网址：<asp:TextBox ID=”TextBox4″ runat=”server” Width=”331px”>cnblogs.com</asp:TextBox><br />
<asp:Button ID=”Button2″ runat=”server” OnClick=”Button2_Click” Text=”查询” />
<asp:Label ID=”lbGoogleResult” runat=”server”></asp:Label><br />
</div>
</form>
</body>
</html>
//后台代码
protected void Button1_Click(object sender, EventArgs e)
{
int paiMing = 0;
string urlWord = HttpUtility.UrlEncode(TextBox1.Text, Encoding.GetEncoding(“gb2312”));
for (int i = 0; i < 500; i += 10)
{
string queryUrl = “http://www.baidu.com/s?lm=0&si=&rn=10&ie=gb2312&ct=0&wd=” + urlWord + “&pn=” + i.ToString() + “&ver=0&cl=3”;
WebRequest request = WebRequest.Create(queryUrl);
WebResponse response = request.GetResponse();
Stream resStream = response.GetResponseStream();
StreamReader sr = new StreamReader(resStream, Encoding.Default);
string htmlCode = sr.ReadToEnd();
resStream.Close();
sr.Close();
int startPos = htmlCode.IndexOf(“<font color=\”#008000\” size=\”-1\”>e.baidu.com</font></a>”);
int endPos = htmlCode.IndexOf(“<br clear=all>”);
string result = htmlCode.Substring(startPos, endPos – startPos);
string[] info = SplitString(result, “百度快照</a>”);
int ret = getBaiduPaiMing(info, “cnblogs.com”);
if (ret != 0)
{
paiMing += ret;
break;
}
else
paiMing += 10;
}
if (paiMing == 0 || paiMing > 500)
lbBaiduResult.Text = “没有排名”;
else
lbBaiduResult.Text = “排名：” + paiMing.ToString();
}
protected void Button2_Click(object sender, EventArgs e)
{
int paiMing = 0;
string urlWord = HttpUtility.UrlEncode(TextBox3.Text, Encoding.GetEncoding(“gb2312”));
for (int i = 0; i < 500; i += 10)
{
string queryUrl = “http://www.google.com.hk/search?hl=zh-CN&newwindow=1&q=” + urlWord + “&start=” + i.ToString() + “&sa=N”;
WebRequest request = WebRequest.Create(queryUrl);
WebResponse response = request.GetResponse();
Stream resStream = response.GetResponseStream();
StreamReader sr = new StreamReader(resStream, Encoding.Default);
string htmlCode = sr.ReadToEnd();
resStream.Close();
sr.Close();
int startPos = htmlCode.IndexOf(“<div id=ires>”);
int endPos = htmlCode.IndexOf(“<div id=leftnav”);
string result = htmlCode.Substring(startPos, endPos – startPos);
string[] info = SplitString(result, “>网页快照</a>”);
int ret = getGooglePaiMing(info, “cnblogs.com”);
if (ret != 0)
{
paiMing += ret;
break;
}
else
paiMing += 10;
}
if (paiMing == 0 || paiMing > 500)
lbGoogleResult.Text = “没有排名”;
else
lbGoogleResult.Text = “排名：” + paiMing.ToString();
}
static public int getBaiduPaiMing(string[] info, string urlStr)
{
for (int i = 0; i < info.Length; i++)
{
int m = info[i].IndexOf(“href=\”http://”) + 6;
int n = info[i].IndexOf(“target=\”_blank\” ><font”) – 2;
string ret = info[i].Substring(m, n – m);
if (ret.IndexOf(urlStr) > -1)
return i + 1;
}
return 0;
}
static public int getGooglePaiMing(string[] info, string urlStr)
{
for (int i = 0; i < info.Length; i++)
{
int m = info[i].IndexOf(“<h3 class=r><a href=\”http://”) + 21;
int n = info[i].IndexOf(“target=_blank class=l”, m); // info[i].IndexOf(“target=_blank class=l”) – 2;
string ret = info[i].Substring(m, n – m – 2);
if (ret.IndexOf(urlStr) > -1)
return i + 1;
}
return 0;
}
static public string[] SplitString(string str, string separator)
{
string tmp = str;
Hashtable ht = new Hashtable();
int i = 0;
int pos = tmp.IndexOf(separator);
while (pos != -1)
{
ht.Add(i, tmp.Substring(0, pos));
tmp = tmp.Substring(pos + separator.Length);
pos = tmp.IndexOf(separator);
i++;
}
ht.Add(i, tmp);
string[] array = new string[10];
for (int j = 0; j < 10; j++)
array[j] = ht[j].ToString();
return array;
}