/// <summary>
/// 尝试向登录程序提交用户名和密码信息，获取返回结果
/// </summary>
/// <param name="loginUrl">数据提交的目标URL</param>
/// <param name="method">提交方法</param>
/// <param name="requestEncoding">请求编码</param>
/// <param name="responseEncoding">响应编码</param>
/// <param name="args">随请求一起发送的数据</param>
/// <returns>WebLoginResult，失败时返回NULL</returns>
public WebLoginResult Login(string loginUrl, string method, Encoding requestEncoding, Encoding responseEncoding, NameValueCollection args)
{
HttpWebRequest request = WebRequest.Create(loginUrl) as HttpWebRequest;
string agent = this.GetUserAgent();
request.UserAgent = (null == agent || "" == agent) ? SpiderSetting.DefaultUserAgent : agent;
//带参数的POST请求
if (method == "POST" && null != args)
{
request.Method = "POST";
request.ContentType = String.Format("application/x-www-form-urlencoded;charset={0}", requestEncoding.WebName);
byte[] data = SpiderBase.GetRequestData(args, null == requestEncoding ? Encoding.Default : requestEncoding);
request.ContentLength = data.Length;
using (Stream reqStream = request.GetRequestStream())
{
reqStream.Write(data, 0, data.Length);
}
}
IWebProxy proxy = this.GetWebProxy();
if (proxy != null)
{
request.Proxy = proxy;
}
string referer = this.GetReferer();
if (null != referer && "" != referer)
{
request.Referer = referer;
}
HttpWebResponse response = null;
try
{
response = request.GetResponse() as HttpWebResponse;
}
catch (Exception e)
{
if (Environment.UserInteractive)
{
Console.WriteLine(e);
}
return(null);
}
if (null == response)
{
return(null);
}
return(new WebLoginResult(response, responseEncoding));
}
private ProcessContext(System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context)
{
this.spiderBase = info.GetValue("spiderBase", typeof(SpiderBase)) as SpiderBase;
}
/// <summary>
/// 构造函数
/// </summary>
internal ProcessContext(SpiderBase spider)
{
this.spiderBase = spider;
}
private ProcessContext(System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context)
{
this.spiderBase = info.GetValue("spiderBase", typeof(SpiderBase)) as SpiderBase;
}
/// <summary>
/// 构造函数
/// </summary>
internal ProcessContext(SpiderBase spider)
{
this.spiderBase = spider;
}