P12证书openssl pkcs12 -in certificate.p12 -clcerts -nokeys -out cert.pem openssl x509 -in cert.pem -noout -datesJKSJava KeyStore证书# 查看 JKS 文件中所有证书的详细信息 keytool -list -v -keystore your-keystore.jks -storepass your-password输出的内容包含如下时间信息Valid from: Tue Mar 12 10:28:41 CST 2024 until: Thu Mar 12 10:28:41 CST 2026