java无法使用Play 2.5发送异步电子邮件
我最近根据本指南将我的应用程序从play 2.3迁移到play 2.5 https://www.playframework.com/documentation/2.5.x/Migration25 我也根据这里指定的内容更新play mailer https://github.com/playframework/play-mailer
现在我的应用程序不再能够发送电子邮件。我为注入mailer实例创建了一个注入器构造函数
@Inject public SmtpConnector(MailerClient mailer)
{
this.mailerClient = mailer;
MailcapCommandMap mc = (MailcapCommandMap) MailcapCommandMap.getDefaultCommandMap();
mc.addMailcap("text/html;; x-java-content- handler=com.sun.mail.handlers.text_html");
mc.addMailcap("text/xml;; x-java-content-handler=com.sun.mail.handlers.text_xml");
mc.addMailcap("text/plain;; x-java-content-handler=com.sun.mail.handlers.text_plain");
mc.addMailcap("multipart/*;; x-java-content-handler=com.sun.mail.handlers.multipart_mixed");
mc.addMailcap("message/rfc822;; x-java-content-handler=com.sun.mail.handlers.message_rfc822");
CommandMap.setDefaultCommandMap(mc);
}
我在异步任务中执行send email方法:
CompletableFuture.runAsync( () -> mailerClient.send(email) ).exceptionally(exc -> {exc.printStackTrace(); return null;});
但我一直收到一个错误,关于mimetype multipart缺乏支持:
... java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1626) ... 5 more Caused by: javax.mail.MessagingException: IOException while sending message; nested exception is: javax.activation.UnsupportedDataTypeException: no object DCH for MIME type multipart/alternative; boundary="----=_Part_0_1284684208.1469102367572" at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1177) at javax.mail.Transport.send0(Transport.java:195) at javax.mail.Transport.send(Transport.java:124) at org.apache.commons.mail.Email.sendMimeMessage(Email.java:1411) ... 14 more Caused by: javax.activation.UnsupportedDataTypeException: no object DCH for MIME type multipart/alternative; boundary="----=_Part_0_1284684208.1469102367572" at javax.activation.ObjectDataContentHandler.writeTo(DataHandler.java:896) at javax.activation.DataHandler.writeTo(DataHandler.java:317) at javax.mail.internet.MimeBodyPart.writeTo(MimeBodyPart.java:1485) at javax.mail.internet.MimeMessage.writeTo(MimeMessage.java:1773) at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1121) ... 17 more
但是:
如上所示,我在喷油器构造函数中设置了它们
我没有更改IDE/类路径中的任何内容(只是build.sbt中的sbt/包版本)
我尝试了这里所有的建议,但没有结果。当前的线程上下文方法导致了一个安全异常
有解决办法吗?是否有(其他)方法使用Play framework 2.5的java api发送电子邮件
更新1:
根据jmehren的建议,我激活了debug标志,这就是我得到的:
Can't load DCH com.sun.mail.handlers.multipart_mixed; Exception: java.lang.ClassNotFoundException: com/sun/mail/handlers/multipart_mixed
根据这个github。com/playframework/play-mailer/issues/104问题似乎是由于没有从play控制器的上下文调用该方法而触发的
更新2: 在这里,您可以找到从开始到异常s000的-verbose:class输出。tinyupload。com/?文件id=50323853839855936002
更新3:
在这里,您可以找到按照jmehrens:s000的建议转储的getClass()类加载器。tinyupload。com/?文件id=51200633758480523188
# 1 楼答案
这解决了问题: