纹化-优快云博客

原创 Centos同步系统时间为上海时间

yum -y install utp ntpdate && ntpdate cn.pool.ntp.org && hwclock --systohc && timedatectl set-timezone Asia/Shanghai

2020-12-04 14:36:56 430 1

查询所有镜像，带过滤条件docker images | grep -vE 'REPOSITORY | redis' | awk 'BEGIN{OFS=":";ORS=" "}{print $1,$2}'根据执行过滤条件后的镜像，进行保存到 tar 包docker save $(docker images | grep -vE 'REPOSITORY | redis' | awk 'BEGIN{OFS=":";ORS=" "}{print $1,$2}') -o export.tar导入镜像do

2020-11-16 10:08:31 1593

原创获取json中的所有key和value

记录优快云游客提供方案let obj = { name:"张三", sex:"男", age:20, height:150} for ( let [key,val] of Object.entries(obj)){ console.log(key,val)}

2020-10-13 20:14:07 925

原创 IDEA Error:java: Compilation failed: internal java compiler error

File > Setting > Build,Execution,Deployment > Compiler > Java Compiler设置相应Module的 target bytecode version 和 Jdk相同的版本。

2020-07-21 16:13:05 107

原创 PostgreSQL @DeleteProvider 批量删除

批量删除PostgreSQL @DeleteProvideDELETE FROM table USING ( VALUES ( 'a4862df5d1f94d5db0ddd369dbf02fdd' ), ( '66e82373db3844808478c98de7f5cde4' ), ( 'fd52ee67c3f0494595340d8fb68016be' ) ) AS temp1 ( c_bh ) WHERE table.c_bh = temp1.c_bh;

2020-07-20 15:10:36 607

原创 PostgreSQL @UpdateProvider 批量更新

批量更新PostgreSQL @UpdateProvideUPDATE tableSET name = temp1.name FROM ( VALUES ( 'a4862df5d1f94d5db0ddd369dbf02fdd', 'new1' ), ( '66e82373db3844808478c98de7f5cde4', 'new2' ), ( 'fd52ee67c3f0494595340d8fb68016be', 'new6' ) ) AS temp1 ( c_bh, name ) W

2020-07-20 15:06:40 714 1

原创 Centos 重启关机

重启：1、reboot 普通重启2、shutdown -r now 立刻重启(root用户使用)3、shutdown -r 10 过10分钟自动重启(root用户使用)4、shutdown -r 20:35 在时间为20:35时候重启(root用户使用)如果是通过shutdown命令设置重启的话，可以用shutdown -c命令取消重启关机：1、halt 立刻关机2、poweroff 立刻关机3、shutdown -h now 立刻关机(root用户使用)4、shutdown -h

2020-05-16 18:42:23 143

原创 Centos 修改静态IP地址

/etc/sysconfig/network-scripts 路径下找到对应IP文件每台机器的可能不同TYPE=“Ethernet”PROXY_METHOD=“none”BROWSER_ONLY=“no”BOOTPROTO=“static”DEFROUTE=“yes”IPV4_FAILURE_FATAL=“no”IPV6INIT=“yes”IPV6_AUTOCONF=“yes”IPV6_DEFROUTE=“yes”IPV6_FAILURE_FATAL=“no”IPV6_ADDR_GE

2020-05-16 17:43:35 190

原创 Centos 关闭防火墙

Centos 关闭防火墙sudo systemctl stop firewalld 临时关闭sudo systemctl disable firewalld ，然后reboot 永久关闭sudo systemctl status firewalld 查看防火墙状态。

2020-05-16 17:41:25 132

原创 Oracle JDK String类之Equals方法剖析

public boolean equals(Object anObject) { if (this == anObject) { return true; } if (anObject instanceof String) { String anotherString = (String)anObjec...

2020-03-31 17:44:34 260

原创 SpringBoot集成FlyWay之踩坑记录

Maven官网最新版目前为6.2.4<dependency> <groupId>org.flywaydb</groupId> <artifactId>flyway-core</artifactId> <version>6.2.4</version...

2020-02-23 14:54:28 8871

原创 JAVA连接Mysql数据库Driver驱动异常

Loading class com.mysql.jdbc.Driver'. This is deprecated. The new driver class iscom.mysql.cj.jdbc.Driver’. The driver is automatically registered via the SPI and manual loading of the driver class is...

2019-12-21 17:03:25 1204

原创 JAVA连接Mysql数据库抛乱码异常解决方案

java.sql.SQLExceptionThe server time zone value ‘�й��׼ʱ��’ is unrecognized or represents more than one time zone. You must…JAVA连接Mysql数据库抛出以上异常需在application.yml中加入jdbc:mysql://localhost:3306/数据库?...

2019-12-21 16:53:30 275

原创 Java中关于Lombok表达式@Builder注解的坑

关于Java中Lombok表达式@Builder注解的坑@Builder语法import lombok.Builder;import lombok.Data;@Builder@Datapublic class User{ //姓名 private String name; //年龄 private String age;}//测试类public class Tes...

2019-09-19 08:54:36 1845

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