C#winform抓取百度,Google搜索关键词结果

基于网站seo,做了一采集百度和Google搜索关键字结果的采集.在这里与大家分享一下

先看先效果图 

代码附加:

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 1   private void baidu_Click(object sender, EventArgs e)
 2         {
 3             int num = 100;//搜索条数
 4             string url = "http://www.baidu.com/s?wd=" + txtSearch.Text.Trim() + "&rn=" + num + "";
 5             string html = search(url, "gb2312");
 6             BaiduSearch baidu = new BaiduSearch();
 7             if (!string.IsNullOrEmpty(html))
 8             {
 9                 int count = baidu.GetSearchCount(html);//搜索条数
10                 if (count > 0)
11                 {
12                     List<Keyword> keywords = baidu.GetKeywords(html, txtSearch.Text.Trim());
13                     dataGridView1.DataSource = keywords;
14                 }
15 
16             }
17         }
18 
19         private void google_Click(object sender, EventArgs e)
20         {
21             int num = 100;
22             string url = "http://www.google.com.hk/search?hl=zh-CN&source=hp&q=" + txtSearch.Text.Trim() + "&aq=f&aqi=&aql=&oq=&num=" + num + "";
23             string html = search(url, "utf-8");
24             if (!string.IsNullOrEmpty(html))
25             {
26 
27                 googleSearch google = new googleSearch();
28                 List<Keyword> keywords = google.GetKeywords(html, txtSearch.Text.Trim());
29                 dataGridView1.DataSource = keywords;
30 
31             }
32         }
33         /// <summary>
34         /// 搜索处理
35         /// </summary>
36         /// <param name="url">搜索网址</param>
37         /// <param name="Chareset">编码</param>
38         public string search(string url, string Chareset)
39         {
40             HttpState result = new HttpState();
41             Uri uri = new Uri(url);
42             HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create(url);
43             myHttpWebRequest.UseDefaultCredentials = true;
44             myHttpWebRequest.ContentType = "text/html";
45             myHttpWebRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.0; .NET CLR 1.1.4322; .NET CLR 2.0.50215;)";
46             myHttpWebRequest.Method = "GET";
47             myHttpWebRequest.CookieContainer = new CookieContainer();
48 
49             try
50             {
51                 HttpWebResponse response = (HttpWebResponse)myHttpWebRequest.GetResponse();
52                 // 从 ResponseStream 中读取HTML源码并格式化 add by cqp
53                 result.Html = readResponseStream(response, Chareset);
54                 result.CookieContainer = myHttpWebRequest.CookieContainer;
55                 return result.Html;
56             }
57             catch (Exception ex)
58             {
59                 return ex.ToString();
60             }
61 
62         }
63         public string readResponseStream(HttpWebResponse response, string Chareset)
64         {
65             string result = "";
66             using (StreamReader responseReader = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding(Chareset)))
67             {
68                 result = formatHTML(responseReader.ReadToEnd());
69             }
70 
71             return result;
72         }
73         /// <summary>
74         /// 描述:格式化网页源码
75         /// 
76         /// </summary>77         /// <param name="htmlContent"></param>78         /// <returns></returns>79         public string formatHTML(string htmlContent)80         {81             string result = "";82 83             result = htmlContent.Replace("&raquo;", "").Replace("&nbsp;", "")84                     .Replace("&copy;", "").Replace("/r", "").Replace("/t", "")85                     .Replace("/n", "").Replace("&amp;", "&");86             return result;87
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 把百度和Google两个类抽取了出来

1.百度Search类

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 1 class BaiduSearch
 2     {
 3         protected string uri = "http://www.baidu.com/s?wd=";
 4         protected Encoding queryEncoding = Encoding.GetEncoding("gb2312");
 5         protected Encoding pageEncoding = Encoding.GetEncoding("gb2312");
 6         protected string resultPattern = @"(?<=找到相关结果[约]?)[0-9,]*?(?=个)";
 7         public int GetSearchCount(string html)
 8         {
 9             int result = 0;
10             string searchcount = string.Empty;
11 
12             Regex regex = new Regex(resultPattern);
13             Match match = regex.Match(html);
14 
15             if (match.Success)
16             {
17                 searchcount = match.Value;
18             }
19             else
20             {
21                 searchcount = "0";
22             }
23 
24             if (searchcount.IndexOf(",") > 0)
25             {
26                 searchcount = searchcount.Replace(",", string.Empty);
27             }
28 
29             int.TryParse(searchcount, out result);
30 
31             return result;
32         }
33 
34         public List<Keyword> GetKeywords(string html, string word)
35         {
36             int i = 1;
37             List<Keyword> keywords = new List<Keyword>();
38             string ss="<h3 class="t"><a.*?href="(?<url>.*?)".*?>(?<content>.*?)</a>";
39             MatchCollection mcTable = Regex.Matches(html,ss);
40             foreach (Match mTable in mcTable)
41             {
42                 if (mTable.Success)
43                 {
44                     Keyword keyword = new Keyword();
45                     keyword.ID = i++;
46                     keyword.Title = Regex.Replace(mTable.Groups["content"].Value, "<[^>]*>", string.Empty);
47                     keyword.Link = mTable.Groups["url"].Value;
48                     keywords.Add(keyword);
49 
50                 }
51             }
52 
53             return keywords;
54         }
55
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2 .GoogleSearch类

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 1   class googleSearch
 2     {
 3 
 4         public List<Keyword> GetKeywords(string html, string word)
 5         {
 6             int i = 1;
 7             List<Keyword> keywords = new List<Keyword>();
 8 
 9             Regex regTable = new Regex("<h3 class="r"><a.*?href="(?<url>.*?)".*?>(?<content>.*?)</a>", RegexOptions.IgnoreCase);
10             Regex regA = new Regex(@"(?is)<a/b[^>]*?href=(['""]?)(?<link>[^'""/s>]+)/1[^>]*>(?<title>.*?)</a>", RegexOptions.IgnoreCase);
11 
12             MatchCollection mcTable = regTable.Matches(html);
13             foreach (Match mTable in mcTable)
14             {
15                 if (mTable.Success)
16                 {
17                     Keyword keyword = new Keyword();
18                     keyword.ID = i++;
19                     keyword.Title = Regex.Replace(mTable.Groups["content"].Value, "<[^>]*>", string.Empty);
20                     keyword.Link = mTable.Groups["url"].Value;
21                     keywords.Add(keyword);
22                 }
23             }
24 
25             return keywords;
26         }
27
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 忘了.还有个导出Excel,这个友友们应该都有自己的方法,我这里就简单写了一个excel导出.也贴出来吧.

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 1   public void ExportDataGridViewToExcel(DataGridView dataGridview1)
 2         {
 3             SaveFileDialog saveFileDialog = new SaveFileDialog();
 4             saveFileDialog.Filter = "Execl  files  (*.xls)|*.xls";
 5             saveFileDialog.FilterIndex = 0;
 6             saveFileDialog.RestoreDirectory = true;
 7             saveFileDialog.CreatePrompt = true;
 8             saveFileDialog.Title = "导出Excel文件";
 9 
10             DateTime now = DateTime.Now;
11             saveFileDialog.FileName = now.Year.ToString().PadLeft(2) + now.Month.ToString().PadLeft(2, '0') + now.Day.ToString().PadLeft(2, '0') + "-" + now.Hour.ToString().PadLeft(2, '0') + now.Minute.ToString().PadLeft(2, '0') + now.Second.ToString().PadLeft(2, '0');
12             saveFileDialog.ShowDialog();
13 
14             Stream myStream;
15             myStream = saveFileDialog.OpenFile();
16             StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding("gb2312"));
17             string str = "";
18             try
19             {
20                 //写标题      
21                 for (int i = 0; i < dataGridview1.ColumnCount; i++)
22                 {
23                     if (i > 0)
24                     {
25                         str += " ";
26                     }
27                     str += dataGridview1.Columns[i].HeaderText;
28                 }
29                 sw.WriteLine(str);
30                 //写内容   
31                 for (int j = 0; j < dataGridview1.Rows.Count; j++)
32                 {
33                     string tempStr = "";
34                     for (int k = 0; k < dataGridview1.Columns.Count; k++)
35                     {
36                         if (k > 0)
37                         {
38                             tempStr += " ";
39                         }
40                         tempStr += dataGridview1.Rows[j].Cells[k].Value.ToString();
41                     }
42                     sw.WriteLine(tempStr);
43                 }
44                 sw.Close();
45                 myStream.Close();
46                 MessageBox.Show("导出成功");
47             }
48             catch (Exception e)
49             {
50                 MessageBox.Show(e.ToString());
51             }
52             finally
53             {
54                 sw.Close();
55                 myStream.Close();
56             }
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57         } 

我把HTTpStatus类给贴出来..有需要demo的可以发邮件给我.或者留下邮箱

Httpstatus.cs 

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class HttpState
   {
       private string _statusDescription;
 
       public string StatusDescription
       {
           get { return _statusDescription; }
           set { _statusDescription = value; }
       }
 
       /// <summary>
       /// 回调 址址, 登陆测试中使用
       /// </summary>
       private string _callBackUrl;
 
       public string CallBackUrl
       {
           get { return _callBackUrl; }
           set { _callBackUrl = value; }
       }
 
 
       /// <summary>
       /// 网页网址 绝对路径格式
       /// </summary>
       private string _url;
 
       public string Url
       {
           get { return _url; }
           set { _url = value; }
       }
 
       /// <summary>
       /// 字符串的形式的Cookie信息
       /// </summary>
       private string _cookies;
 
       public string Cookies
       {
           get { return _cookies; }
           set { _cookies = value; }
       }
 
       /// <summary>
       /// Cookie信息
       /// </summary>
       private CookieContainer _cookieContainer = new CookieContainer();
 
       public CookieContainer CookieContainer
       {
           get { return _cookieContainer; }
           set { _cookieContainer = value; }
       }
 
       /// <summary>
       /// 网页源码
       /// </summary>
       private string _html;
 
       public string Html
       {
           get { return _html; }
           set { _html = value; }
       }
 
       /// <summary>
       /// 验证码临时文件(绝对路径)
       /// </summary>
       private string _tmpValCodePic;
 
       public string TmpValCodePic
       {
           get { return _tmpValCodePic; }
           set { _tmpValCodePic = value; }
       }
 
       /// <summary>
       /// 验证码临时文件名(相对路径)
       /// </summary>
       private string _tmpValCodeFileName = "emptyPic.gif";
 
       public string TmpValCodeFileName
       {
           get { return _tmpValCodeFileName; }
           set { _tmpValCodeFileName = value; }
       }
 
       /// <summary>
       /// 有验证码
       /// </summary>
       private bool _isValCode;
 
       public bool IsValCode
       {
           get { return _isValCode; }
           set { _isValCode = value; }
       }
 
       /// <summary>
       /// 验证码URL
       /// </summary>
       private string _valCodeURL;
 
       public string ValCodeURL
       {
           get { return _valCodeURL; }
           set { _valCodeURL = value; }
       }
 
       /// <summary>
       /// 验证码识别后的值
       /// </summary>
       private string _valCodeValue;
 
       public string ValCodeValue
       {
           get { return _valCodeValue; }
           set { _valCodeValue = value; }
       }
 
       /// <summary>
       /// 其它参数
       /// </summary>
       private Hashtable _otherParams = new Hashtable();
 
       public Hashtable OtherParams
       {
           get { return _otherParams; }
           set { _otherParams = value; }
       }
 
       // 重复添加处理 add by fengcj  09/11/19 PM
       public void addOtherParam(object key, object value)
       {
           if (!this.OtherParams.ContainsKey(key))
               this.OtherParams.Add(key, value);
           else
           {
               this.OtherParams[key] = value;
           }
       }
 
       public void removeOtherParam(object key)
       {
           this.OtherParams.Remove(key);
       }
 
       public object getOtherParam(object key)
       {
           return this.OtherParams[key];
       }
   }

　　

 KeyWord.cs

class Keyword
   {
       public int ID { get; set; }
       public string Title { get; set; }
       public string Link { get; set; }
   }

　　鉴于大家都需要demo,今天就整理一下发上来.添加了导出word,导出excel功能.晕...木找到怎么放文件路径进来....有需要的可以email我.

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原文地址：https://www.cnblogs.com/cuihongyu3503319/p/9481533.html