根据

According to ssllabs, the server is all right, and it works java7+. Notably, clients that don't support SNI will fail talking to the server. In your debug dump, SNI is indeed missing, and that's likely the problem.

默认情况下，应在java7 +上启用SNI.您的stacktrace显示确实在java8上.此链接可能会对您有所帮助.

SNI should be enabled by default on java7+. Your stacktrace shows that indeed it's on java8. This link might help you.