java qq发送邮件
异常处理
1. javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
解决方案：mail.smtp.socketFactory.fallback设置为true
2. javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure
解决方案：jdk导致的，jdk里面有一个jce的包，安全性机制导致的访问https会报错，官网上有替代的jar包，换掉就好了
目录 %JAVA_HOME%jrelibsecurity里的local_policy.jar,US_export_policy.jar
JDK7 http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html
JDK8 http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html
案例参考：http://www.cnblogs.com/lihongchen/p/4543562.html#undefined