我正在使用opencontactsnet提取Gmail联系人。执行此行时我得到The remote server returned an error: (401) Unauthorized.
HttpWebResponse exportResponse = ( HttpWebResponse ) contactsRequest.GetResponse();
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data;
using System.Net;
using System.Web.UI;
using System.Web.UI.WebControls;
using OpenContactsNet;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
GmailExtract gm = new GmailExtract();
NetworkCredential nw = new NetworkCredential("chendur.pandiya","**");
MailContactList mc;
if (gm.Extract(nw, out mc))
{
}
else
{
}
}
}
以下是完整的GmailExtract类
using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Text;
using Utilities.Web;
namespace OpenContactsNet
{
public class GmailExtract : IMailContactExtract
{
private const string ContinueUrl = "http://mail.google.com/mail?ui=html&zy=l";
private const string ExportUrl = "https://mail.google.com/mail/contacts/data/export?exportType=ALL&groupToExport=&out=GMAIL_CSV";
private const string LoginRefererUrl = "https://www.google.com/accounts/ServiceLogin?service=mail&passive=true&rm=false&continue=http%3A%2F%2Fmail.google.com%2Fmail%2F%3Fui%3Dhtml%26zy%3Dl<mpl=default<mplcache=2";
private const string LoginUrl = "https://www.google.com/accounts/ServiceLoginAuth?service=mail";
private const string UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; EmbeddedWB 14.52 from: http://www.bsalsa.com/ EmbeddedWB 14.52; .NET CLR 1.1.4322; .NET CLR 2.0.50727; InfoPath.1; .NET CLR 1.0.3705; .NET CLR 3.0.04506.30)";
#region IMailContactExtract Members
public bool Extract( NetworkCredential credential, out MailContactList list )
{
bool result = false;
list = new MailContactList();
try
{
CookieCollection cookies = new CookieCollection();
// Prepare login form data
HttpValueCollection loginFormValues = new HttpValueCollection();
loginFormValues[ "ltmpl" ] = "default";
loginFormValues[ "ltmplcache" ] = "2";
loginFormValues[ "continue" ] = ContinueUrl;
loginFormValues[ "service" ] = "mail";
loginFormValues[ "rm" ] = "false";
loginFormValues[ "hl" ] = "en";
loginFormValues[ "Email" ] = credential.UserName;
loginFormValues[ "Passwd" ] = credential.Password;
loginFormValues[ "PersistentCookie" ] = "true";
loginFormValues[ "rmShown" ] = "1";
loginFormValues[ "null" ] = "Sign In";
// Convert to bytes
byte[] loginPostData = Encoding.UTF8.GetBytes( loginFormValues.ToString( true ) );
HttpWebRequest loginRequest = ( HttpWebRequest ) WebRequest.Create( LoginUrl );
loginRequest.Method = "POST";
loginRequest.UserAgent = UserAgent;
loginRequest.Referer = LoginRefererUrl;
loginRequest.ContentType = "application/x-www-form-urlencoded";
loginRequest.ContentLength = loginPostData.Length;
loginRequest.AllowAutoRedirect = false;
// Create cookie container
loginRequest.CookieContainer = new CookieContainer();
// Add post data to request
Stream stream;
using ( stream = loginRequest.GetRequestStream() )
{
stream.Write( loginPostData, 0, loginPostData.Length );
}
HttpWebResponse loginResponse = ( HttpWebResponse ) loginRequest.GetResponse();
cookies.Add( loginResponse.Cookies );
// Create request to export Google CSV page
HttpWebRequest contactsRequest = ( HttpWebRequest ) WebRequest.Create( ExportUrl );
contactsRequest.Method = "GET";
contactsRequest.UserAgent = UserAgent;
contactsRequest.Referer = loginResponse.ResponseUri.ToString();
// use cookie gotten from login page
contactsRequest.CookieContainer = new CookieContainer();
foreach ( Cookie cookie in cookies )
{
contactsRequest.CookieContainer.Add( cookie );
}
HttpWebResponse exportResponse = ( HttpWebResponse ) contactsRequest.GetResponse();
// Read data from response stream
string csvData;
using ( Stream responseStream = exportResponse.GetResponseStream() )
{
using ( StreamReader streamRead = new StreamReader( responseStream ) )
{
csvData = streamRead.ReadToEnd();
}
}
// parse google csv
string[] lines = csvData.Split( '\n' );
foreach ( string line in lines )
{
string[] values = line.Split( ',' );
if ( values.Length < 2 )
{
continue;
}
MailContact mailContact = new MailContact();
mailContact.Email = values[ 1 ];
mailContact.Name = values[ 0 ];
list.Add( mailContact );
}
result = true;
}
catch (Exception e)
{
throw e;
}
return result;
}
#endregion
}
}
答案 0 :(得分：1)
我遇到了同样的问题。我不得不在opencontactsnet中更改GmailExtract类。以下是适用于我的新代码。
public class GmailExtract : IMailContactExtract
{
private const string ContinueUrl = "https://mail.google.com/mail/?";
private const string ExportUrl = "https://mail.google.com/mail/contacts/data/export?exportType=ALL&groupToExport=&out=GMAIL_CSV";
private const string LoginRefererUrl = "https://www.google.com/accounts/ServiceLogin?service=mail&passive=true&rm=false&continue=http%3A%2F%2Fmail.google.com%2Fmail%2F%3Fui%3Dhtml%26zy%3Dl<mpl=default<mplcache=2";
private const string LoginUrl = "https://www.google.com/accounts/ServiceLoginAuth?service=mail";
private const string UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)";
#region IMailContactExtract Members
public bool Extract( NetworkCredential credential, out MailContactList list)
{
bool result = false;
list = new MailContactList();
DateTime jsStartDate = new DateTime(1970, 1, 1);
TimeSpan endTs = DateTime.Now.Subtract(jsStartDate);
TimeSpan startTs = DateTime.Now.AddMinutes(-2).Subtract(jsStartDate);
try
{
CookieCollection cookies = new CookieCollection();
// Prepare login form data
HttpValueCollection loginFormValues = new HttpValueCollection();
loginFormValues["Email"] = credential.UserName;
loginFormValues["Passwd"] = credential.Password;
loginFormValues["asts"] = "";
loginFormValues["continue"] = ContinueUrl;
loginFormValues["dsh"] = "1461574034599761425";
loginFormValues["hl"] = "en";
loginFormValues["ltmpl"] = "default";
loginFormValues["ltmplcache"] = "2";
loginFormValues["rm"] = "false";
loginFormValues["rmShown"] = "1";
loginFormValues["service"] = "mail";
loginFormValues["signIn"] = "Sign In";
loginFormValues["scc"] = "1";
loginFormValues["ss"] = "1";
loginFormValues["GALX"] = "rBTUs4OAJBI";
loginFormValues["ltmpl"] = "default";
loginFormValues["ltmpl"] = "default";
// Convert to bytes
byte[] loginPostData = Encoding.UTF8.GetBytes( loginFormValues.ToString( true ) );
HttpWebRequest loginRequest = ( HttpWebRequest ) WebRequest.Create( LoginUrl );
loginRequest.Method = "POST";
loginRequest.UserAgent = UserAgent;
loginRequest.Referer = LoginRefererUrl;
loginRequest.ContentType = "application/x-www-form-urlencoded";
loginRequest.ContentLength = loginPostData.Length;
loginRequest.AllowAutoRedirect = false;
// Create cookie container
loginRequest.CookieContainer = new CookieContainer();
loginRequest.CookieContainer.Add(new Cookie("GMAIL_LOGIN", "T" + startTs.Milliseconds.ToString() + "/" + startTs.Milliseconds.ToString() + "/" + endTs.Milliseconds.ToString(), "/", ".google.com"));
loginRequest.CookieContainer.Add(new Cookie("GALX", "rBTUs4OAJBI", "/accounts", ".google.com"));
// Add post data to request
Stream stream;
using ( stream = loginRequest.GetRequestStream())
{
stream.Write( loginPostData, 0, loginPostData.Length);
}
HttpWebResponse loginResponse = ( HttpWebResponse ) loginRequest.GetResponse();
cookies.Add( loginResponse.Cookies );
// Create request to export Google CSV page
HttpWebRequest contactsRequest = ( HttpWebRequest ) WebRequest.Create( ExportUrl );
contactsRequest.Method = "GET";
contactsRequest.UserAgent = UserAgent;
contactsRequest.Referer = loginResponse.ResponseUri.ToString();
// use cookie gotten from login page
contactsRequest.CookieContainer = new CookieContainer();
foreach ( Cookie cookie in cookies )
{
contactsRequest.CookieContainer.Add( cookie );
}
HttpWebResponse exportResponse = ( HttpWebResponse ) contactsRequest.GetResponse();
// Read data from response stream
string csvData;
using ( Stream responseStream = exportResponse.GetResponseStream())
{
using ( StreamReader streamRead = new StreamReader( responseStream ) )
{
csvData = streamRead.ReadToEnd();
}
}
// parse google csv
string[] lines = csvData.Split( '\n' );
foreach ( string line in lines )
{
string[] values = line.Split( ',' );
if ( values.Length < 2 )
{
continue;
}
MailContact mailContact = new MailContact();
mailContact.Email = values[ 28 ];
mailContact.Name = values[ 0 ];
if (mailContact.Email.Trim().Length > 0)
{
list.Add(mailContact);
}
}
result = true;
}
catch
{
}
return result;
}
#endregion
}
答案 1 :(得分：0)
我不熟悉google的api，也不了解C＃。 但是，请检查您要将表单发送到的URL。 看起来您的身份验证有效。否则你会收到403。 401表示您（作为经过身份验证的用户）不允许访问所请求的资源。
答案 2 :(得分：0)
10.4.2 401未经授权
请求需要用户身份验证。响应必须包含WWW-Authenticate头字段（第14.47节），其中包含适用于所请求资源的质询。客户端可以使用合适的Authorization头字段重复请求（第14.8节）。 如果请求已包含授权凭据，则401响应表示已拒绝授权这些凭据。如果401响应包含与先前响应相同的质询，并且用户代理已尝试进行身份验证至少一次，然后用户应该被呈现给响应中给出的实体，因为该实体可能包含相关的诊断信息。
LoginRefererUrl是否正确形成？因为在谷歌服务器上找不到该地址，但是正确形成的版本会直接将我签到我的邮箱中。