无法从Google App Engine发送电子邮件 [英] Unable to send email from google app engine

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本文介绍了无法从Google App Engine发送电子邮件的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我使用的是GAE版本1.7.3,并且使用java邮件api发送电子邮件.在本地开发服务器上,邮件发送正常.但是部署到App Engine之后,我得到以下异常

I am on GAE Version 1.7.3 and using java mail api to send the email. On local development server the mail is sent fine. But after deploying to app engine i get following exception

com.google.apphosting.api.ApiProxy$CallNotFoundException: The API package 'remote_socket' or call 'Resolve()' was not found.
    at java.lang.Thread.getStackTrace(Thread.java:1495)
    at com.google.apphosting.runtime.ApiProxyImpl.doSyncCall(ApiProxyImpl.java:240)
    at com.google.apphosting.runtime.ApiProxyImpl.access$000(ApiProxyImpl.java:66)
    at com.google.apphosting.runtime.ApiProxyImpl$1.run(ApiProxyImpl.java:183)
    at com.google.apphosting.runtime.ApiProxyImpl$1.run(ApiProxyImpl.java:180)

    at java.security.AccessController.doPrivileged(Native Method)

    at com.google.apphosting.runtime.ApiProxyImpl.makeSyncCall(ApiProxyImpl.java:180)

    at com.google.apphosting.runtime.ApiProxyImpl.makeSyncCall(ApiProxyImpl.java:66)

    at com.google.apphosting.api.ApiProxy.makeSyncCall(ApiProxy.java:107)
    at com.google.apphosting.api.ApiProxy.makeSyncCall(ApiProxy.java:56)

    at com.google.appengine.api.socket.SocketApiHelper.apiProxyMakeSyncCall(SocketApiHelper.java:90)

    at com.google.appengine.api.socket.SocketApiHelper.makeSyncCall(SocketApiHelper.java:58)

    at com.google.appengine.api.socket.NameServiceImpl.lookupAllHostAddr(NameServiceImpl.java:61)

    at com.google.apphosting.util.ResolverManager$AppEngineNameservice.lookupAllHostAddr(ResolverManager.java:42)

    at java.net.InetAddress.getAddressFromNameService(InetAddress.java:1353)
    at java.net.InetAddress.getAllByName0(InetAddress.java:1303)

    at java.net.InetAddress.getAllByName(InetAddress.java:1232)

    at java.net.InetAddress.getAllByName(InetAddress.java:1163)

    at java.net.InetAddress.getByName(InetAddress.java:1113)

    at javax.mail.Service.connect(Service.java:257)

    at javax.mail.Service.connect(Service.java:91)

    at javax.mail.Service.connect(Service.java:76)

    at javax.mail.Transport.send(Transport.java:94)
    at javax.mail.Transport.send(Transport.java:48)
    at com.test.igreetings.service.impl.EmailImpl.sendEmail(EmailImpl.java:61)

这是我发送电子邮件的代码:

Here is the my code to send the email:

try {
            // Email is my custom pojo class
            Email email = new Email();
            email.setMailHost("smtp.gmail.com");
            email.setAuth("true");
            email.setFrom("username@gmail.com");
            email.setTo("targetemail@example.com");
            email.setSubject("test);
            email.setMessage("test body");
            email.setPort("25");
            email.setStarttls("true");
            email.setLogin("username@gmail.com");
            email.setPassword("pwd");

            Properties props = new Properties();
            props.setProperty("mail.host", email.getMailHost());
            props.setProperty("mail.smtp.port", email.getPort());
            props.setProperty("mail.smtp.auth", email.getAuth());
            props.setProperty("mail.smtp.starttls.enable", email.getStarttls());

            Authenticator auth = new SMTPAuthenticator(email.getLogin(), email.getPassword());

            Session session = Session.getInstance(props, auth);

            MimeMessage msg = new MimeMessage(session);
            msg.setText(email.getMessage());
            msg.setSubject(email.getSubject());
            msg.setFrom(new InternetAddress(email.getFrom()));
            msg.addRecipient(Message.RecipientType.TO, new InternetAddress(email.getTo()));
            Transport transport = session.getTransport("smtp");
            transport.connect(email.getMailHost(), 25, "username@gmail.com", "pwd");

            transport.sendMessage(msg, msg.getAllRecipients());

            transport.close();
        } catch (AuthenticationFailedException ex) {
            Logging.log("AuthenticationFailedException in sendEmail: " + ex.toString());
            ex.printStackTrace();

        } catch (AddressException ex) {

            Logging.log("AddressException in sendEmail: " + ex.toString());
            ex.printStackTrace();
        } catch (MessagingException ex) {
            Logging.log("MessagingException in sendEmail: " + ex.toString());
            ex.printStackTrace();
        }

我已根据您的建议更改了代码,这是我的更新代码:

I have changed code per your suggestion and here is my updated code:

Properties props = new Properties();
                        Session session = Session.getDefaultInstance(props, null);
                        Message msg = new MimeMessage(session);
                        msg.setFrom(new InternetAddress("username@gmail.com"));
                        msg.addRecipient(Message.RecipientType.TO,
                        new InternetAddress("targetemail@example.com"));
                        msg.setSubject("test");
                        msg.setText("test");
                        Transport.send(msg);

并且我遇到类似的异常,未找到API包"remote_socket"或调用"CreateSocket()".上述发送者也已注册为该应用程序的开发者.

And i am getting similar exception The API package 'remote_socket' or call 'CreateSocket()' was not found. The above sender is also registered as developer of this application.

推荐答案

正如@Shay所指出的,您不能将外部SMTP提供程序与GAE一起使用. GAE使用它自己的SMTP网关.

As @Shay noted you can not use external SMTP provider with GAE. GAE uses it's own SMTP gateway.

相关问题:在GAE上,您只能通过Google帐户发送来自一位应用程序管理员(GAE管理员->权限)或当前登录用户的电子邮件(即来自字段).注意:这仅适用于通过Google帐户登录的用户,不适用于通过联合登录(例如OpenID)登录的用户:

Related issue: on GAE you can only send email that originates (i.e. from field) from one of the app administrators (GAE Admin -> permissions) or currently logged-in users via Google Accounts. Note: this only works for users logged-in via Google Accounts, not for users logged in via federated login (e.g. OpenID): Sending email on behalf of Google Apps user (answer is from Google engineer)

更新:如前所述,username@gmail.com必须是

Update: as noted before, the username@gmail.com must be the email of the user that logged into your GAE app via Google Apps login or the user must be an admin of your GAE app.

Update2:对我有用:

Properties props = new Properties();
Session session = Session.getDefaultInstance(props, null);
try {
    Message msg = new MimeMessage(session);
    msg.setFrom(new InternetAddress("admin@domain.com", "Admin", "UTF-8"));
    msg.addRecipient(Message.RecipientType.TO, new InternetAddress(recipientAddress));
    msg.setSubject(emailSubject);
    msg.setText(emailText);
    Transport.send(msg);

} catch (AddressException e) {
// TO address not valid
} catch (MessagingException e) {
    // other email error
} catch (UnsupportedEncodingException e) {
    // should not happen UTF-8 is always available
}

这篇关于无法从Google App Engine发送电子邮件的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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