当我从运行Tomcat服务器的AWS Elastic Beanstalk中部署的Java应用程序发送电子邮件时，我收到此异常。我在这里缺少什么？
06 Jun 2016 17:24:39 [taskExecutor-6] [] ERROR: o.s.i.handler.LoggingHandler - java.lang.NoClassDefFoundError: Could not initialize class sun.security.provider.certpath.AdaptableX509CertSelector
at sun.security.provider.certpath.PKIXCertPathValidator.isWorthTrying(PKIXCertPathValidator.java:231)
at sun.security.provider.certpath.PKIXCertPathValidator.engineValidate(PKIXCertPathValidator.java:171)
at java.security.cert.CertPathValidator.validate(CertPathValidator.java:279)
at sun.security.validator.PKIXValidator.doValidate(PKIXValidator.java:345)
at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:260)
at sun.security.validator.Validator.validate(Validator.java:260)
at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:326)
at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:231)
at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:126)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1454)
at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:213)
at sun.security.ssl.Handshaker.processLoop(Handshaker.java:913)
at sun.security.ssl.Handshaker.process_record(Handshaker.java:849)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1035)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1344)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1371)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1355)
at com.sun.mail.util.SocketFetcher.configureSSLSocket(SocketFetcher.java:503)
at com.sun.mail.util.SocketFetcher.startTLS(SocketFetcher.java:443)
at com.sun.mail.smtp.SMTPTransport.startTLS(SMTPTransport.java:1647)
at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:534)
at javax.mail.Service.connect(Service.java:291)
at org.springframework.mail.javamail.JavaMailSenderImpl.doSend(JavaMailSenderImpl.java:397)
at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:346)
at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:341)
at org.springframework.integration.mail.MailSendingMessageHandler.handleMessageInternal(MailSendingMessageHandler.java:81)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:78)
at org.springframework.integration.handler.MessageHandlerChain$1.send(MessageHandlerChain.java:150)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:115)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:45)
at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:95)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.sendMessage(AbstractReplyProducingMessageHandler.java:260)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.sendReplyMessage(AbstractReplyProducingMessageHandler.java:241)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.produceReply(AbstractReplyProducingMessageHandler.java:205)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleResult(AbstractReplyProducingMessageHandler.java:199)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:177)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:78)
at org.springframework.integration.handler.MessageHandlerChain$1.send(MessageHandlerChain.java:150)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:115)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:45)
at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:95)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.sendMessage(AbstractReplyProducingMessageHandler.java:260)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.sendReplyMessage(AbstractReplyProducingMessageHandler.java:241)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.produceReply(AbstractReplyProducingMessageHandler.java:205)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleResult(AbstractReplyProducingMessageHandler.java:199)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:177)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:78)
at org.springframework.integration.handler.MessageHandlerChain.handleMessageInternal(MessageHandlerChain.java:131)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:78)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.invokeHandler(BroadcastingDispatcher.java:160)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.access$000(BroadcastingDispatcher.java:48)
at org.springframework.integration.dispatcher.BroadcastingDispatcher$1.run(BroadcastingDispatcher.java:136)
at org.springframework.integration.util.ErrorHandlingTaskExecutor$1.run(ErrorHandlingTaskExecutor.java:52)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
答案 0 :(得分：0)
Beanstalk有一个混乱的JDK安装/配置，或者服务器的证书中有一些让JDK混淆的东西。可能有些防火墙或防病毒软件正在干扰连接。
其中一个workarounds described in the JavaMail FAQ可能会有所帮助。
mail.smtp.ssl.trust属性以信任服务器。