描述
最近把项目从腾讯云迁移到阿里云（linux）后，突然发现邮件功能不能用，经过排查log发现报了一个协议的错误：javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropriate)
具体报错信息如下：
代码语言：javascript复制javax.mail.MessagingException: Could not connect to SMTP host: smtp.163.com, port: 465;
nested exception is:
javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropriate)
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1963)
at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:654)
at javax.mail.Service.connect(Service.java:345)
at org.springframework.mail.javamail.JavaMailSenderImpl.connectTransport(JavaMailSenderImpl.java:518)
at org.springframework.mail.javamail.JavaMailSenderImpl.doSend(JavaMailSenderImpl.java:437)
at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:361)
at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:356)
at com.forum.core.Utils.JavaxMailUtil.sendTemplateMail(JavaxMailUtil.java:51)
at com.forum.frontSystem.Feedback.Service.impl.FeedbackSeviceImpl.lambda$insert$0(FeedbackSeviceImpl.java:124)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:750)
Caused by: javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropriate)
at sun.security.ssl.HandshakeContext.<init>(HandshakeContext.java:171)
at sun.security.ssl.ClientHandshakeContext.<init>(ClientHandshakeContext.java:106)
at sun.security.ssl.TransportContext.kickstart(TransportContext.java:238)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:405)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:384)
at com.sun.mail.util.SocketFetcher.configureSSLSocket(SocketFetcher.java:528)
at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:333)
at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:229)
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1927)
... 11 more解决方法
经过网上说法是：jdk1.8版本导致SSL调用权限上有问题。需要修改java.security文件的内容，具体路径在jdk安装目录下的/jre/lib/security 里找到java.security并打开，找到如下图所示的位置，把它们注释掉，再重启你的项目，问题就解决了。
