生成证书

keytool -genkey -alias testalias -keyalg RSA -sigalg SHA1WithRSA -validity 20000 -keysize 1024 -keystore test.keystore -v

keytool -importkeystore -srckeystore ./test.keystore -destkeystore ./test.keystore -deststoretype JKS

参考链接：https://www.jianshu.com/p/44781e2f7044