nodejs插件及用法整理

cnpm install node-xlsx --save

const xlsx=require('node-xlsx');const DBUtil=require('./utils/DBUtil.js');const fs=require('fs');const path=require('path');function readExcel(path){
  var excel=xlsx.parse(path);
  return excel;}var obj=readExcel(path.join(__dirname,"./files/studentinfo.xls"));console.log(obj[0].data);

const excel=require('node-xlsx');const fs=require('fs');const path=require('path');const DBUtil=require('./utils/DBUtil.js');function writeExcel(){
  var conn=DBUtil.getConn();
  conn.query("select * from studentinfo",[],(err,result)=>{
    if(err){
 
    }
    else{
      var excelArr=[];
      var headerRow=[];
      for(var i in result[0]){
        headerRow.push(i);
      }
      excelArr.push(headerRow);
      for(var i=0;i<result.length;i++){
        var temp=[];
        for(var j=0;j<headerRow.length;j++){
          temp.push(result[i][headerRow[j]]);
        }
        excelArr.push(temp);
      }
      try {
        var buff=excel.build([{name:'学生信息',data:excelArr}]);
        fs.writeFileSync(path.join(__dirname,"./files/01.xlsx"),buff);
        console.log("ok");
      } catch (error) {
        console.log(err);
      }
    }
  });
  conn.end();}writeExcel();

$ cnpm install nodemailer --asve
$ yarn add nodemailer

const nodemailer=require('nodemailer');var transport = nodemailer.createTransport({
  service:"qq",
  auth:{
    user:"365055754@qq.com",
    pass:"peshapwpokgvcahe"
  }});var options={
  from:"365055754@qq.com",
  to:"lovesnsfi@live.com",
  subject:"这是一封来自nodemailer发送的邮件信息",
  text:"这是一封来自nodemailer发送的邮件信息"+(new Date()).toLocaleString(),
  html:"<h2>这是一封来自<u>nodemail</u>的测试邮件···</h2>"};transport.sendMail(options,(err,info)=>{
  if(err){
    console.log(err);
  }
  else{
    console.log(info);
  }});

{ accepted: [ 'lovesnsfi@live.com' ],
  rejected: [],
  envelopeTime: 221,
  messageTime: 830,
  messageSize: 801,
  response: '250 Ok: queued as ',
  envelope: { from: '365055754@qq.com', to: [ 'lovesnsfi@live.com' ] },
  messageId: '<2fbef9f1-1041-fd59-1111-0b987e8d81da@qq.com>' }

const fs=require('fs');const path=require('path');class MailTemplateModel{
  constructor(userName,u_id,registerTime,mail){
    this.userName=userName;
    this.u_id=u_id;
    this.registerTime=registerTime;
    this.mail=mail;
  }
  toString(){
    var str=`尊敬的${this.userName}你好！
    欢迎注册成为我们的会员，你的账号为${this.u_id},你的注册时间为：${this.registerTime}。
    请注意保管好您的账号与密码，如有问题欢迎发送邮件至${this.mail}!
    谢谢！祝您生活愉快！`;
    return str;
  }}module.exports=MailTemplateModel;