Question

我的Android应用必须使用OAAP2通过IMAP访问Gmail，而无需用户密码。我已经实现了这个例子： https://java.net/projects/javamail/pages/OAuth2 根据需要添加提供程序（首次使用SASL支持时，SASL XOAUTH2提供程序将添加到Java安全配置中）

这是我的代码：

获取访问令牌

public void getAndUseAuthTokenBlocking() throws JSONException 
{           
   String token = "";
   try 
   {
        // Retrieve a token for the given account and scope. It will always return either
        // a non-empty String or throw an exception.

    String scope = "oauth2:https://mail.google.com/"; 
    Log.i("Access TOKEN account",accountName);

    token = GoogleAuthUtil.getToken(activity.getApplicationContext(), accountName, scope);

    // Do work with token.
    URL url = new URL("https://www.googleapis.com/oauth2/v1/tokeninfo?access_token="+ token);
    HttpURLConnection con = (HttpURLConnection) url.openConnection();
    int serverCode = con.getResponseCode();

    if (serverCode == 200)
    {
        access_token = token;
        return;
    //bad token, invalidate and get a new one
    } 
    else if (serverCode == 401)
    {
      // invalidate the token that we found is bad so that GoogleAuthUtil won't
      // return it next time (it may have cached it)
      GoogleAuthUtil.invalidateToken(activity.getApplicationContext(), token);
      // consider retrying getAndUseTokenBlocking() once more
      Log.w("Access TOKEN","INVALIDATO");   
      getAndUseAuthTokenBlocking();
    }
    else 
    {
        Log.e("SERVER CODE","Server returned the following error code: " + serverCode);
        return;
    }

    return;
 } 
 catch (GooglePlayServicesAvailabilityException playEx) 
 {
 Dialog alert = GooglePlayServicesUtil.getErrorDialog(
     playEx.getConnectionStatusCode(),
     activity,1);
 } 
 catch (UserRecoverableAuthException userAuthEx) 
 {
  // Start the user recoverable action using the intent returned by
  // getIntent()
  activity.startActivityForResult(
          userAuthEx.getIntent(),
          1);
  return;
 } 
 catch (IOException ioEx) 
 {
  // network or server error, the call is expected to succeed if you try again later.
  // Don't attempt to call again immediately - the request is likely to
  // fail, you'll hit quotas or back-off.

   Log.e("IOException", "transient error encountered: " + ioEx.getMessage());
  return;
 } 
 catch (GoogleAuthException authEx) 
 {
  // Failure. The call is not expected to ever succeed so it should not be
  // retried.
   Log.e("GoogleAuthException", "Unrecoverable authentication exception: " + authEx.getMessage(), authEx);
  return;
 }
}

创建提供者（OAuthFactory e OAuthClient类取自https://code.google.com/p/google-mail-oauth2-tools/source/browse/trunk/java/#java%2Fcom%2Fgoogle%2Fcode%2Fsamples%2Foauth2）

public static final class OAuthProvider extends Provider {
private static final long serialVersionUID = 1L;

public OAuthProvider() {
    super("Google OAuth2 Provider", 1.0,
          "Provides the XOAUTH2 SASL Mechanism");
    String className = OAuthFactory.class.getName();
    put("SaslClientFactory.XOAUTH2", className);
  }
}

IMAP连接

protected String doInBackground(String... params)
{
Log.i("account",accountName);

try {
    getAndUseAuthTokenBlocking();
} catch (JSONException e1) {
    // TODO Auto-generated catch block
    e1.printStackTrace();
}

Log.i("access token",access_token);       

initialize();

Properties props = new Properties();
props.put("mail.imap.ssl.enable", "true"); // required for Gmail
props.put("mail.imap.sasl.enable", "true");
props.put("mail.imap.sasl.mechanisms", "XOAUTH2");
props.put("mail.imap.auth.login.disable", "true");
props.put("mail.imap.auth.plain.disable", "true");
Session session = Session.getInstance(props);

session.setDebug(true);

Store store;

try {
    store = session.getStore("imaps");
     store.connect("imap.gmail.com", accountName, access_token);        
} catch (NoSuchProviderException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
} catch (MessagingException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

return null;
}

但此代码提供了 [AUTHENTICATIONFAILED]无效凭据（失败）错误

08-21 16:14:43.100: I/System.out(7346): DEBUG: setDebug: JavaMail version 1.5.2
08-21 16:14:43.100: I/System.out(7346): DEBUG: getProvider() returning javax.mail.Provider[STORE,imaps,com.sun.mail.imap.IMAPSSLStore,Oracle,1.5.2]
08-21 16:14:43.100: W/dalvikvm(7346): method Lcom/sun/mail/imap/IMAPStore;.getSession incorrectly overrides package-private method with same name in Ljavax/mail/Service;
08-21 16:14:43.104: I/System.out(7346): DEBUG IMAPS: mail.imap.fetchsize: 16384
08-21 16:14:43.104: I/System.out(7346): DEBUG IMAPS: mail.imap.ignorebodystructuresize: false
08-21 16:14:43.104: I/System.out(7346): DEBUG IMAPS: mail.imap.statuscachetimeout: 1000
08-21 16:14:43.104: I/System.out(7346): DEBUG IMAPS: mail.imap.appendbuffersize: -1
08-21 16:14:43.104: I/System.out(7346): DEBUG IMAPS: mail.imap.minidletime: 10
08-21 16:14:43.108: I/System.out(7346): DEBUG IMAPS: trying to connect to host "imap.gmail.com", port 993, isSSL true
08-21 16:14:48.408: I/System.out(7346): * OK Gimap ready for requests from 82.57.18.250 z47mb29911677eep
08-21 16:14:48.408: I/System.out(7346): A0 CAPABILITY
08-21 16:14:48.468: I/System.out(7346): * CAPABILITY IMAP4rev1 UNSELECT IDLE NAMESPACE QUOTA ID XLIST CHILDREN X-GM-EXT-1 XYZZY SASL-IR AUTH=XOAUTH AUTH=XOAUTH2 AUTH=PLAIN AUTH=PLAIN-CLIENTTOKEN
08-21 16:14:48.468: I/System.out(7346): A0 OK Thats all she wrote! z47mb29911677eep
08-21 16:14:48.468: I/System.out(7346): DEBUG IMAPS: AUTH: XOAUTH
08-21 16:14:48.468: I/System.out(7346): DEBUG IMAPS: AUTH: XOAUTH2
08-21 16:14:48.468: I/System.out(7346): DEBUG IMAPS: AUTH: PLAIN
08-21 16:14:48.468: I/System.out(7346): DEBUG IMAPS: AUTH: PLAIN-CLIENTTOKEN
08-21 16:14:48.472: I/System.out(7346): DEBUG IMAPS: protocolConnect login, host=imap.gmail.com, user=myemail@gmail.com, password=<non-null>
08-21 16:14:48.472: I/System.out(7346): DEBUG IMAPS: AUTHENTICATE PLAIN command trace suppressed
08-21 16:14:49.488: I/System.out(7346): DEBUG IMAPS: AUTHENTICATE PLAIN command result: A1 NO [AUTHENTICATIONFAILED] Invalid credentials (Failure)
08-21 16:14:49.488: W/System.err(7346): javax.mail.AuthenticationFailedException: [AUTHENTICATIONFAILED] Invalid credentials (Failure)
08-21 16:14:49.492: W/System.err(7346):     at com.sun.mail.imap.IMAPStore.protocolConnect(IMAPStore.java:715)
08-21 16:14:49.492: W/System.err(7346):     at javax.mail.Service.connect(Service.java:364)
08-21 16:14:49.492: W/System.err(7346):     at javax.mail.Service.connect(Service.java:245)
08-21 16:14:49.492: W/System.err(7346):     at com.example.tickets.Reader2.doInBackground(Reader2.java:113)
08-21 16:14:49.492: W/System.err(7346):     at com.example.tickets.Reader2.doInBackground(Reader2.java:1)
08-21 16:14:49.492: W/System.err(7346):     at android.os.AsyncTask$2.call(AsyncTask.java:287)
08-21 16:14:49.492: W/System.err(7346):     at java.util.concurrent.FutureTask.run(FutureTask.java:234)
08-21 16:14:49.492: W/System.err(7346):     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
08-21 16:14:49.492: W/System.err(7346):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
08-21 16:14:49.500: W/System.err(7346):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
08-21 16:14:49.500: W/System.err(7346):     at java.lang.Thread.run(Thread.java:841)

我不明白问题是IMAP连接还是访问令牌;为了获取访问令牌，我也尝试了oauth.py，但结果是一样的。

感谢您的回复。

Answer 1

enter image description here

您可能需要跟随图片，输入您的gmail帐户设置

IMAP Gmail身份验证：凭据无效

1 个答案: