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PO500 Internal Server Error while sending an email via Gmail SMTP server using play framework
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copied!<p>I'm implementing a contact form using Play Framework in Java. When I'm trying to send an email via Gmail SMTP server I've got following message in browser console:</p> <pre><code>POST http://localhost:9000/app_contact_test.html 500 (Internal Server Error) jquery-1.10.1.min.js:6 </code></pre> <p>The code for sending an email (<code>class Contact, function test()</code>) is following:</p> <pre><code> //Get the session object Properties props = new Properties(); props.put("mail.smtp.host", "smtp.gmail.com"); props.put("mail.smtp.socketFactory.port", "465"); props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory"); props.put("mail.smtp.auth", "true"); props.put("mail.smtp.port", "465"); Session session = Session.getDefaultInstance(props, new javax.mail.Authenticator() { protected PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication(username,password); } }); //compose message try { MimeMessage message = new MimeMessage(session); message.setFrom(new InternetAddress(username)); message.addRecipient(Message.RecipientType.TO,new InternetAddress(recipient)); message.setSubject("Hello"); message.setText("Testing......."); //send message Transport.send(message); } catch (MessagingException e) { throw new RuntimeException(e); } </code></pre> <p>Stack trace:</p> <pre><code>! Internal server error, for (POST) [/app_contact_test.html] -> java.lang.NoClassDefFoundError: javax/mail/MessagingException at java.lang.Class.getDeclaredMethods0(Native Method) ~[na:1.7.0] at java.lang.Class.privateGetDeclaredMethods(Class.java:2442) ~[na:1.7.0] at java.lang.Class.getMethod0(Class.java:2685) ~[na:1.7.0] at java.lang.Class.getMethod(Class.java:1620) ~[na:1.7.0] at org.apache.commons.lang3.reflect.MethodUtils.getMatchingAccessibleMethod(MethodUtils.java:511) ~[commons-lang3-3.1.jar:3.1] at play.core.Router$HandlerInvoker$$anon$7$$anon$2$$anonfun$3.apply(Router.scala:178) ~[play_2.10-2.2.0.jar:2.2.0] Caused by: java.lang.ClassNotFoundException: javax.mail.MessagingException at java.net.URLClassLoader$1.run(URLClassLoader.java:366) ~[na:1.7.0] at java.net.URLClassLoader$1.run(URLClassLoader.java:355) ~[na:1.7.0] at java.security.AccessController.doPrivileged(Native Method) ~[na:1.7.0] at java.net.URLClassLoader.findClass(URLClassLoader.java:354) ~[na:1.7.0] at java.lang.ClassLoader.loadClass(ClassLoader.java:423) ~[na:1.7.0] at java.lang.ClassLoader.loadClass(ClassLoader.java:356) ~[na:1.7.0] </code></pre> <p><strong>Update</strong>: Okey, I solved the issue with MessagingException, still getting the error, but now with another trace:</p> <pre><code>[error] play - Cannot invoke the action, eventually got an error: java.lang.SecurityException: Access to default session denied [error] application - ! @6g8ee4hcb - Internal server error, for (POST) [/app_contact_sendEmail.html] -> play.api.Application$$anon$1: Execution exception[[SecurityException: Access to default session denied]] at play.api.Application$class.handleError(Application.scala:293) ~[play_2.10-2.2.0.jar:2.2.0] at play.api.DefaultApplication.handleError(Application.scala:399) [play_2.10-2.2.0.jar:2.2.0] at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$2$$anonfun$applyOrElse$3.apply(PlayDefaultUpstreamHandler.scala:261) [play_2.10-2.2.0.jar:2.2.0] at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$2$$anonfun$applyOrElse$3.apply(PlayDefaultUpstreamHandler.scala:261) [play_2.10-2.2.0.jar:2.2.0] at scala.Option.map(Option.scala:145) [scala-library.jar:na] at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$2.applyOrElse(PlayDefaultUpstreamHandler.scala:261) [play_2.10-2.2.0.jar:2.2.0] Caused by: java.lang.SecurityException: Access to default session denied at javax.mail.Session.getDefaultInstance(Session.java:327) ~[mail.jar:1.4.7] at controllers.Contact.sendEmail(Contact.java:52) ~[na:na] at Routes$$anonfun$routes$1$$anonfun$applyOrElse$7$$anonfun$apply$7.apply(routes_routing.scala:129) ~[na:na] at Routes$$anonfun$routes$1$$anonfun$applyOrElse$7$$anonfun$apply$7.apply(routes_routing.scala:129) ~[na:na] at play.core.Router$HandlerInvoker$$anon$7$$anon$2.invocation(Router.scala:183) ~[play_2.10-2.2.0.jar:2.2.0] at play.core.Router$Routes$$anon$1.invocation(Router.scala:377) ~[play_2.10-2.2.0.jar:2.2.0] </code></pre> <p>In all tutorials is nothing about 500 Server Error or external properties to avoid it. Any help?</p>

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