我正在使用Spring boot在一天中的特定时间发送电子邮件。我使用Spring调度器实现了这一点。这部分工作正常。但是在发送邮件时，应用程序 随机 抛出 aMail 服务器连接失败；嵌套的异常是 javax.mail.MessagingException。Could not convert socket to TLS;
问题是它是随机抛出这个异常的.其他时候，邮件发送没有任何问题。一旦它开始抛出异常，那么我最终会重新启动服务器。一旦应用程序移动到Prod.I不能做到这一点，我知道连接参数和属性是正确的，因为电子邮件正在发送。我知道连接参数和属性是正确的，因为电子邮件正在发送。有没有人知道为什么会发生这种情况。
以下是我使用的spring boot配置
spring.mail.host=relay.xx.org
spring.mail.port=25
[email protected]
spring.mail.password=xxxxx
spring.mail.properties.mail.smtp.auth=localhost
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtps.trust=*
spring.mail.properties.mail.smtp.connectiontimeout=5000
spring.mail.properties.mail.smtp.timeout=5000
spring.mail.properties.mail.smtp.writetimeout=5000
发送邮件的代码
SimpleMailMessage msg = new SimpleMailMessage();
msg.setFrom(FROM_ADDRESS);
msg.setTo(TO_ADDRESS);
msg.setSubject("Test email ");
msg.setText("This is a Test email generated at 5 PM." );
javaMailSender.send(msg);
下面的异常跟踪。
org.springframework.mail.MailSendException: Mail server connection failed; nested exception is javax.mail.MessagingException: Could not convert socket to TLS;
nested exception is:
javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Failed messages: javax.mail.MessagingException: Could not convert socket to TLS;
nested exception is:
javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at org.springframework.mail.javamail.JavaMailSenderImpl.doSend(JavaMailSenderImpl.java:446) ~[spring-context-support-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:321) ~[spring-context-support-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:310) ~[spring-context-support-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.ms.DmhThymeLeaf.utility.EmailScheduler.sendEmailActual(EmailScheduler.java:81) ~[classes/:na]
at org.ms.DmhThymeLeaf.utility.EmailScheduler.cornJobSchedulerActual(EmailScheduler.java:65) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_91]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_91]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_91]
at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:65) ~[spring-context-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) ~[spring-context-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:93) [spring-context-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_91]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_91]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_91]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [na:1.8.0_91]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_91]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_91]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_91]
Caused by: javax.mail.MessagingException: Could not convert socket to TLS
at com.sun.mail.smtp.SMTPTransport.startTLS(SMTPTransport.java:2155) ~[javax.mail-1.6.1.jar:1.6.1]
at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:752) ~[javax.mail-1.6.1.jar:1.6.1]
at javax.mail.Service.connect(Service.java:366) ~[javax.mail-1.6.1.jar:1.6.1]
at org.springframework.mail.javamail.JavaMailSenderImpl.connectTransport(JavaMailSenderImpl.java:515) ~[spring-context-support-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.mail.javamail.JavaMailSenderImpl.doSend(JavaMailSenderImpl.java:435) ~[spring-context-support-5.0.4.RELEASE.jar:5.0.4.RELEASE]
... 18 common frames omitted
Caused by: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.ssl.Alerts.getSSLException(Alerts.java:192) ~[na:1.8.0_91]
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1949) ~[na:1.8.0_91]
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:302) ~[na:1.8.0_91]
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:296) ~[na:1.8.0_91]
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1509) ~[na:1.8.0_91]
at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:216) ~[na:1.8.0_91]
at sun.security.ssl.Handshaker.processLoop(Handshaker.java:979) ~[na:1.8.0_91]
at sun.security.ssl.Handshaker.process_record(Handshaker.java:914) ~[na:1.8.0_91]
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1062) ~[na:1.8.0_91]
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1375) ~[na:1.8.0_91]
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1403) ~[na:1.8.0_91]
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1387) ~[na:1.8.0_91]
at com.sun.mail.util.SocketFetcher.configureSSLSocket(SocketFetcher.java:620) ~[javax.mail-1.6.1.jar:1.6.1]
at com.sun.mail.util.SocketFetcher.startTLS(SocketFetcher.java:547) ~[javax.mail-1.6.1.jar:1.6.1]
at com.sun.mail.smtp.SMTPTransport.startTLS(SMTPTransport.java:2150) ~[javax.mail-1.6.1.jar:1.6.1]
... 22 common frames omitted