Java IMAP Gmail身份验证：凭据无效

我的Android应用程序必须使用OAuth2通过IMAP访问Gmail，无需用户密码。 我已经实现了这个示例： 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;
 }
} 

创建提供程序（OAuthFactory和OAuthClient类取自）

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;
}

但此代码给出了[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)

08-21 16:14:43.100:I/System.out（7346）：调试：setDebug:JavaMail版本1.5.2
08-21 16:14:43.100:I/System.out（7346）：调试：getProvider（）返回javax.mail.Provider[STORE，imaps，com.sun.mail.imap.IMAPSSLStore，Oracle，1.5.2]
08-21 16:14:43.100:W/dalvikvm（7346）：方法Lcom/sun/mail/imap/IMAPStore；。getSession错误地覆盖了Ljavax/mail/Service中同名的包私有方法；
08-21 16:14:43.104:I/System.out（7346）：调试IMAPS:mail.imap.fetchsize:16384
08-21 16:14:43.104:I/System.out（7346）：调试IMAPS:mail.imap.ignorebodystructuresize:false
08-21 16:14:43.104:I/System.out（7346）：调试IMAPS:mail.imap.statuscachetimeout:1000
08-21 16:14:43.104:I/System.out（7346）：调试IMAPS:mail.imap.appendbuffersize:-1
08-21 16:14:43.104:I/System.out（7346）：调试IMAPS:mail.imap.minidletime:10
08-21 16:14:43.108:I/System.out（7346）：调试IMAPS:尝试连接到主机“imap.gmail.com”，端口993，isSSL true
08-21 16:14:48.408:I/System.out（7346）：*正常Gimap准备就绪，可以接收来自82.57.18.250 z47mb29911677eep的请求
08-21 16:14:48.408：输入/系统输出（7346）：A0能力
08-21 16:14:48.468:I/System.out（7346）：*功能IMAP4rev1取消选择空闲命名空间配额ID XLIST CHILDREN X-GM-EXT-1 xyzy SASL-IR AUTH=XOAUTH AUTH=XOAUTH=XOAUTH2 AUTH=PLAIN AUTH=PLAIN-CLIENTTOKEN
08-21 16:14:48.468:I/System.out（7346）：A0好的，这就是她写的全部内容！Z47MB2991677EEP
08-21 16:14:48.468:I/System.out（7346）：调试IMAPS:AUTH:XOAUTH
08-21 16:14:48.468:I/System.out（7346）：调试IMAPS:AUTH:XOAUTH2
08-21 16:14:48.468:I/System.out（7346）：调试IMAPS:AUTH:PLAIN
08-21 16:14:48.468:I/System.out（7346）：调试IMAPS:AUTH:PLAIN-CLIENTTOKEN
08-21 16:14:48.472:I/System.out（7346）：调试IMAPS:protocolConnect登录，主机=imap.gmail.com，用户=myemail@gmail.com，密码=
08-21 16:14:48.472:I/System.out（7346）：调试IMAPS：验证普通命令跟踪被抑制
08-21 16:14:49.488:I/System.out（7346）：调试IMAPS：验证普通命令结果：A1否[AUTHENTICATIONFAILED]无效凭据（失败）
08-21 16:14:49.488:W/System.err（7346）：javax.mail.AuthenticationFailedException:[AUTHENTICATIONFAILED]无效凭据（失败）
08-21 16:14:49.492:W/System.err（7346）：位于com.sun.mail.imap.IMAPStore.protocolConnect（IMAPStore.java:715）
08-21 16:14:49.492:W/System.err（7346）：位于javax.mail.Service.connect（Service.java:364）
08-21 16:14:49.492:W/System.err（7346）：位于javax.mail.Service.connect（Service.java:245）
08-21 16:14:49.492:W/System.err（7346）：位于com.example.tickets.Reader2.doInBackground（Reader2.java:113）
08-21 16:14:49.492:W/System.err（7346）：位于com.example.tickets.Reader2.doInBackground（Reader2.java:1）
08-21 16:14:49.492:W/System.err（7346）：在android.os.AsyncTask$2.call（AsyncTask.java:287）
08-21 16:14:49.492:W/System.err（7346）：在java.util.concurrent.FutureTask.run（FutureTask.java:234）处
08-21 16:14:49.492:W/System.err（7346）：在android.os.AsyncTask$SerialExecutor$1.run（AsyncTask.java:230）
08-21 16:14:49.492:W/System.err（7346）：位于java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1080）
08-21 16:14:49.500:W/System.err（7346）：位于java.util.concurrent.ThreadPoolExecutor$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；对于take访问令牌，我也尝试了oauth.py，但结果是一样的

谢谢您的回复。

---

您可能需要按照图片进行操作，将您的gmail帐户设置设置为

您的日志显示您正在发出一个AUTHENTICATE普通命令，并且服务器将丢失一个带有AUTHENTICATIONFAILED响应代码的NO响应。因此，您希望使用Oauth2，但实际上您使用的是Plain。根据javamail文档，我使用了props.put（“mail.imap.auth.Plain.disable”，true”）；mail.imap.auth.Plain.disable boolean如果为true，则阻止使用AUTHENTICATE Plain命令。默认值为false。您正在为“imap”设置一系列属性“协议，但您使用的是“imaps”协议。将getStore调用更改为使用“imap”。另外，如果您使用的是内置OAuth支持的最新JavaMail版本，则不需要所有Google OAuth代码。感谢Bill的回复，问题是getStore方法中的协议名称。但是现在我对SASL身份验证有一些问题：08-21 21:46:39.102:I/System.out（2234）：调试IMAPS：无法加载SASL身份验证程序，抛出：08-21 21:46:39.102:I/System.out（2234）：java.lang.ClassNotFoundException:com.sun.mail.imap.protocol.IMAPSASASLAuthenticator我尝试过使用，但我一直都遇到SASL身份验证问题。“你不需要所有的GoogleOAuth代码”是什么意思？我使用过javamail 1.5.2 release.tnxi如果任何人对此有解决方案，请在此处发布。如果您无法打开图片，您可以通过以下方式找到该功能：帐户-->安全-->不太安全的应用程序访问-->打开访问

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)