读取网页中内容的方法

1 //从网页中读取结果数,返回搜索结果数

2 public string ReturnCount(stringkeyword,stringinfoclass)

3 {

4 try

5 {

6 string keyWord = this.GB2Unicode(keyword);

7 string infoClass = this.GB2Unicode(infoclass);

8 string mmmm = "";

9 string url = "http://www.search.hc360.com/cgi-bin/getcount?w=" + keyWord + "&c=" + infoClass + "&b=&s=&i=";

10

11 WebRequest wreq = WebRequest.Create(url);

12 HttpWebResponse wresp = (HttpWebResponse)wreq.GetResponse();

13 Stream s = wresp.GetResponseStream();

14 StreamReader sr = new StreamReader(s, System.Text.Encoding.GetEncoding("gb2312"));

15 string temp = sr.ReadToEnd();

16 //Response.Write(temp);

17 string[] str = temp.Split(';');

18 if (str[0] != null)

19 {

20 //HttpContext.Current.Response.Write(str[0].ToString());

21 //Response.Write(str[0].Split(']')[0].Split('[')[1].ToString());

22 mmmm += str[0].Split(']')[1].Split('=')[1].ToString();

23 }

24 else

25 {

26 mmmm += "134";

27 }

28 return mmmm;

29 }

30 catch

31 {

32 return "100";

33 }

34

35 }

36

37

38 //因为streamreader不支持中文,所以要通过这个方法,把中文转换成其支持的代码

39 public string GB2Unicode(string strSearch)

40 {

41 string Hexs = "";

42 string HH;

43 Encoding GB = Encoding.GetEncoding("GB2312");

44 Encoding unicode = Encoding.Unicode;

45

46 byte[] GBBytes = GB.GetBytes(strSearch);

47 for (int i = 0; i < GBBytes.Length; i++)

48 {

49 HH = "%" + GBBytes[i].ToString("x");

50 Hexs += HH;

51 }

52 return Hexs;

53 }

54