JavaMailはJBOSS Application Server 7と連携しますが、OpenShiftのTomcat7では動作しません。

Question

package com.example.web; 

    import java.io.*; 
    import java.util.*; 
    import javax.servlet.*; 
    import javax.servlet.annotation.WebServlet; 
    import javax.servlet.http.*; 
    import javax.mail.*; 
    import javax.mail.internet.*; 
    import javax.activation.*; 
    import javax.annotation.Resource; 

    @WebServlet("/SendMail") 
    public class SendMail extends HttpServlet { 

     protected void doPost(HttpServletRequest request, HttpServletResponse response) 
       throws ServletException, IOException { 

      String host = "smtp.gmail.com"; 
      String from = "email"; 
      String pass = "password"; 

      Properties props = System.getProperties(); 
      props.put("mail.smtp.starttls.enable", "true"); 
      props.put("mail.smtp.host", host); 
      props.put("mail.smtp.user", from); 
      props.put("mail.smtp.password", pass); 
      props.put("mail.smtp.port", "587"); 
      props.put("mail.smtp.auth", "true"); 
      props.put("mail.debug", "true"); 

      Session session = Session.getInstance(props, new GMailAuthenticator(from, pass)); 

      response.setContentType("text/html"); 
      PrintWriter out = response.getWriter(); 

      try { 

       MimeMessage message = new MimeMessage(session); 


       message.setFrom(new InternetAddress(from,"Magazin Online")); 
       message.addRecipient(Message.RecipientType.TO, new InternetAddress(request.getParameter("send_to"))); 

       message.setSubject("Test Email"); 
       message.setText(request.getParameter("message")); 

       // Send message 
       Transport.send(message); 
       out.println("message sent"); 
      } catch (MessagingException mex) { 
       mex.printStackTrace(); 
      } 
     } 

    } 

javax.mail.AuthenticationFailedException 
     at javax.mail.Service.connect(Service.java:319) 
     at javax.mail.Service.connect(Service.java:169) 
     at javax.mail.Service.connect(Service.java:118) 
     at javax.mail.Transport.send0(Transport.java:188) 
     at javax.mail.Transport.send(Transport.java:118) 
     at com.example.web.SendMail.doPost(SendMail.java:49) 
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:646) 
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) 
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) 
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
     at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) 
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) 
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) 
     at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) 
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) 
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) 
     at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:683) 
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) 
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) 
     at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1042) 
     at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607) 
     at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316) 
     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
     at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) 
     at java.lang.Thread.run(Thread.java:745) 

これは電子メールの送信に使用されるコードです。 localhostのTomcat 7で動作しますが、OpenShiftのTomcat 7では動作しません。 しかし、JBoss Application Server 7はOpenShift上で動作します。 これはなぜ起こっているのですか？

Answer 1

Sign-in Has Been PreventedというGoogleからのメールを受け取ったはずです。これはnew device/application from remote locationでログインしようとしているときに発生します。 Googleセキュリティ設定を更新する必要がある場合があります。

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