环境配置 删除旧版本 sudo apt-get remove docker docker-engine docker.io containerd runc 更新apt包索引 sudo apt-get update 安装包以允许apt通过HTTPS使用存储库 sudo apt-get install apt-transport-https sudo apt-get install ca-certificates sudo apt-get install curl sudo apt-get install gnupg-agent sudo apt-get install software-properties-common 添

类型转换 字符串 大部分数据类型都可以使用toString()函数转换为字符串 console.log(([1,2,3]).toString()); //1,2,3 也可以使用函数String转换为字符串 console.log(String([1,2,3])); 或者使用join连接为

axios请求云之讯短信接口实现短信发送 安装axios cnpm install axios --save 方法实现 static async sendMessage(ctx){ let param = Math.random().toString().substr(2, 4); //生成四位随机数 let phone = '157********'; const url = 'https://open.ucpaas.com/ol/sms/sendsms'; const axios = require('axios'); let sendRe = await axios({ method:

Sequelize事务操作 let transaction; //事务开始 try { transaction = await sequelize.transaction(); const replace_record = { p_code: v.get('path.p_code'), p_type: v.get('path.p_type') }; const { id: record_id } = await ReplaceRecordModel.create(replace_record, { transaction }); await WxReplacesheetsModel.create( { record_id, name: v.get('path.name'), phone: v.get('path.phone'), province: v.get('path.province'), city: v.get('path.city'), district: v.get('path.district'), question: v.get('path.question'), status: 1 }, { transaction } );

安装bbr加速 进入/usr/local/src目录，下载bbr.sh文件 cd /usr/local/src sudo wget --no-check-certificate https://github.com/teddysun/across/raw/master/bbr.sh 添加可执行权限 sudo chmod +x bbr.sh 执行该脚本文件,安装完成后提示按y

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申请快递查询API授权key kuaidi.com SDK文件KDApi.php /** * 物流信息查询接口SDK */ class KDAPI{ private $_APPKEY = 'twde5d8ef***********'; //改为您自己的key private $_APIURL = "https://highapi.kuaidi.com/openapi-querycountordernumber.html?"; private $_show = 0; private $_muti

查看当前开了哪些端口其实一个服务对应一个端口，每个服务对应/usr/lib/firewalld/services下面一个xml文件 firewall-cmd --list-services 通过f