如何能实现这一问题

可以用第三方bouncy实现

You can use the bouncy castle tls provider library, it has support for jdk 1.5

The download site for their libraries is herehttps://www.bouncycastle.org/latest_releases.htmlyou can also use maven.

There is also an example on how to use their provider:https://github.com/bcgit/bc-java/blob/master/tls/src/test/java/org/bouncycastle/jsse/provider/test/BCJSSEClientTest.java#L31-L35