随笔

2022/11/08 16:47:02

mysql添加远程访问用户

CREATE USER  'root'@'%'IDENTIFIED BY 'Zz123456';

grant all privileges on *.* to 'root'@'%' with grant option;

flush privileges;

2022/10/13 14:03:21

刷新 DNS 解析缓存

ipconfig /flushdns

2022/10/11 09:19:04

MAVEN 中央仓库

<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
                          https://maven.apache.org/xsd/settings-1.0.0.xsd">
  <mirrors>
    <mirror>
      <id>repo1-maven</id>
      <mirrorOf>central</mirrorOf>
      <name>repo1 maven</name>
      <url>https://repo1.maven.org/maven2/</url>
    </mirror>
  </mirrors>
</settings>

2022/08/26 13:57:25

修改时区为北京时区(上海)

cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

查看服务器当前时间

date "+%Y-%m-%d %H:%M:%S %u %Z"

2022/08/24 09:59:12

通过 socks5://127.0.0.1:1080代理访问ifconfig.co
-v 显示http请求的通信过程(包括请求头和请求内容等详细信息)
-x 发送指定请求,默认GET

curl ifconfig.co -vx socks5://127.0.0.1:1080

curl ipip.ooo -vx http://127.0.0.1:8010

2022/07/01 10:17:26

实时查看docker容器日志

docker logs -f --tail 1000  CONTAINER ID OR NAMES

2022/06/24 10:38:12

 List<Object> list = ListUtil.empty();
 list.forEach(System.out::println);

2022/06/08 10:54:32

Java通过stream 获取list第一个元素

  // 获取的如果是null，那么用get方法会抛出异常
   list.stream().findFirst().get();
  // 将.get()替换为.orElse(null)，这样就会返回null值了
  list.stream().findFirst().orElse(null);

2022/06/06 16:43:18

计算当前时间距离第二天凌晨的秒数

/**
     * 计算当前时间距离第二天凌晨的秒数
     *
     * @return
     */
    public static Long getSecondsNextEarlyMorning() {
        Calendar cal = Calendar.getInstance();
        cal.add(Calendar.DAY_OF_YEAR, 1);
        cal.set(Calendar.HOUR_OF_DAY, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.MILLISECOND, 0);
        return (cal.getTimeInMillis() - System.currentTimeMillis()) / 1000;
    }

2022/06/03 16:01:49

mybatis原生分页公式
mmexport1654243187269