连接Scoket时大部分安卓手机报错

com.android.org.bouncycastle.jce.exception.ExtCertPathValidatorException: Could not validate certificate:certificate expired at Thu Oct 12 10:37:38 GMT+08:00 2017(compared to Tue 17 16:57:06 GMT+08:00 2017)

如何能解决这个问题