摘要:
查看端口是否启动: netstat -an |grep port 关闭防火墙systemctl status firewalld service iptables status 暂时关闭防火墙 systemctl stop firewalld service iptables stop 永久关闭防火 阅读全文
摘要:
饿汉模式 public class Singleton01 { private static final Singleton01 INSTANCE = new Singleton01(); private Singleton01(){} public static Singleton01 getIn 阅读全文