${JAVA_HOME} = D:\Java\jdk1.8.0_191
keytool 存储 D:\Java\jdk1.8.0_191\bin\keytool.exe
查看已有的CA证书
keytool -list -keystore D:\Java\jre1.8.0_191\lib\security\cacerts 或 keytool -list -keystore "D:\\Java\\jre1.8.0_191\\lib\\security\\cacerts"
导入CA证书
keytool -import -keystore "D:\\Java\\jre1.8.0_191\\lib\\security\\cacerts" -file "D:\\Java\\mine.cer"