[英]Sending email without user interaction in android using OAuth
尝试连接到SMTP时出现此错误
javax.mail.MessagingException: 334 eyJzdGF0dXMiOiI0MDAiLCJzY2hlbWVzIjoiQmVhcmVyIiwic2NvcGUiOiJodHRwczovL21haWwuZ29vZ2xlLmNvbS8ifQ==
这是我的代码
public class GMailOauthSender
{
private Session session;
public SMTPTransport connectToSmtp(String host, int port, String userEmail, String oauthToken, boolean debug) throws Exception {
Properties props = new Properties();
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.starttls.required", "true");
props.put("mail.smtp.sasl.enable", "false");
session = Session.getInstance(props);
session.setDebug(debug);
final URLName unusedUrlName = null;
SMTPTransport transport = new SMTPTransport(session, unusedUrlName);
// If the password is non-null, SMTP tries to do AUTH LOGIN.
final String emptyPassword = null;
transport.connect(host, port, userEmail, emptyPassword);
byte[] response = String.format("user=%s\1auth=Bearer %s\1\1", userEmail, oauthToken).getBytes();
response = BASE64EncoderStream.encode(response);
transport.issueCommand("AUTH XOAUTH2 " + new String(response), 235);
return transport;
}
public synchronized void sendMail(String subject, String body, String user, String oauthToken, String recipients) {
try {
SMTPTransport smtpTransport = connectToSmtp("smtp.gmail.com",587,user,oauthToken,true);
MimeMessage message = new MimeMessage(session);
DataHandler handler = new DataHandler(new ByteArrayDataSource(body.getBytes(), "text/plain"));
message.setSender(new InternetAddress(user));
message.setSubject(subject);
message.setDataHandler(handler);
if (recipients.indexOf(',') > 0)
message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(recipients));
else
message.setRecipient(Message.RecipientType.TO, new InternetAddress(recipients));
smtpTransport.sendMessage(message, message.getAllRecipients());
} catch (Exception e) {
Log.d("test", e.getMessage());
}
}
}
我从堆栈溢出的某些地方获取了此代码。 有帮助吗?
您收到的错误
eyJzdGF0dXMiOiI0MDAiLCJzY2hlbWVzIjoiQmVhcmVyIiwic2NvcGUiOiJodHRwczovL21haWwuZ29vZ2xlLmNvbS8ifQ==
使用Base64解码器解码为以下内容
{"status":"400","schemes":"Bearer","scope":"https://mail.google.com/"}
最终的含义(与消息一样神秘)是您使用的身份验证令牌已过期。 您需要使它无效,然后获得一个新的(只需再次请求令牌)。
您可以这样使令牌无效:
mAccountManager.invalidateAuthToken("con.google", mAuthenticationToken);
我希望这会有所帮助:)
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