我创建了一个payroll webapp并使用了mysql和node js来构建它。 问题是我不知道如何将其转换为桌面webapp。 我已经使用了node-mysql模块，所以我现在需要更改一些东西 或者只是使用node webkit转换它？
这是如何工作的，真的吗？
这是我的server.js现在的样子。那么，我是否需要再次对代码进行任何更改？
var express = require('express');
var path = require('path');
var bodyParser = require('body-parser');
var app = express();
var mysql = require('mysql');
//var ejsLint=require('./server.js');
//ejsLint.lint('attendance-data.ejs', '-p');
var connection = mysql.createConnection({
host:'localhost',
user:'root',
password:'',
database:'employees',
multipleStatements:true
});
app.set('view engine','ejs');
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.get('/', function (req,res){
res.render('index');
});
var daValue=227.30;
app.get('/da',function(req,res){
res.render('da');
});
app.post('/da-data',function(req,res){
daValue = Number(req.body.da);
var data = {da :daValue};
console.log('da is :',daValue);
res.render('da-data.ejs',data);
});
app.get('/add-employee',function(req,res){
res.render('add-employee');
});
app.post('/add-employee',function(req,res){
res.status(200).send();
console.log('employee '+req.body.name + ' added');
});
connection.connect(function(err){
if(err){
console.log('Error connecting to Db');
return;
}
console.log('Connection established');
});
app.post('/form',function (req,res){
//employee details from add-employee.html page
var name=req.body.name;
var designation = req.body.designation;
var pan = req.body.pan;
var aadhar = req.body.aadhar;
var bank = req.body.bank;
var basicSalary = req.body.salary;
var allowance = req.body.allowance;
var grossSalary = req.body.salarygross;
var esi = req.body.esi;
var uan = req.body.uan;
var details = {name:name,designation:designation,pan:pan,aadhar:aadhar,
bank:bank,basic_salary:basicSalary,other_allowances:allowance,gross_salary:grossSalary,esi:esi,uan:uan};
// for sending data as objects into database
// use {name of database column : name of the variable where it's value is stored}
// example {wages_rate is the name of database column : wagesRate is the variable where
// value is stored}
var query = connection.query('INSERT INTO employee_details SET ?',details,function(err,result){
if(err){
console.log(err);
}
console.log(query.sql);
});
res.status(200).send('employee ' + name + 'with salary of '+salary+ ' added');
});
app.get('/show',function (req,res){
connection.query('SELECT * FROM employee_details',function(err,rows){
if(err) throw err;
console.log('Data received');
console.log(rows);
var data ="Id "+"<strong>" +" name "+" designation "+" uan"+"</strong>";
for(var i=0;i<rows.length;i++){
data = data+"<br>" + (i+1)+". "+rows[i].name +" "+rows[i].designation+" "+rows[i].uan+"<br>";
}
res.send(data);
});
});
var rowsLength;
var salaryFromRow;
var salaryArr=[];
var allowanceFromRow;
var allowanceArr=[];
var designationArr=[];
app.get('/attendance',function (req,res){
connection.query('SELECT * FROM employee_details',function(err,rows){
if(err) {
throw err;
}else{
rowsLength = rows.length;
for(var i=0;i<rowsLength;i++){
salaryFromRow = rows[i].salary;
salaryArr.push(salaryFromRow);
allowanceFromRow = rows[i].allowance;
allowanceArr.push(allowanceFromRow);
designationArr.push(rows[i].designation);
console.log('designation is ',designationArr);
}
res.render('attendance',{rows:rows});
}
});
});
app.post('/attendance-data',function(req,res){
var uanFromHtml;
var nameFromHtml;
var daysPresent;
var attendance;
var nameForm;
var designation;
var monthFromHTML;
var t;
var realBasicSalary;
var realOtherAllowances;
var realGrossSalary;
var pfBasic;
var esiGross;
var pTax=0;
var netAmount;
var advance=0;
var finalData = [];
for(var i=1;i<=rowsLength;i++){
var dataArr = [];
var finalTable = [];
attendance = "attendance"+i;
t=i-1;
salaryForPerson = salaryArr[i];
allowanceForPerson = allowanceArr[i];
console.log('req.body is ', req.body);
daysPresent = Number(req.body[attendance]);
nameFromHtml = req.body.name[t];
var nameArr = req.body.name;
uanFromHtml = req.body.uan[t];
monthFromHTML = req.body.monthyear;
var uanArr = req.body.uan;
realBasicSalary = Math.ceil((req.body.basicsalary[t])*(daysPresent/30)) ;
realOtherAllowances = Math.ceil((req.body.otherallowance[t])*(daysPresent/30));
realGrossSalary = Math.ceil((req.body.grosssalary[t])*(daysPresent/30));
console.log('realBasicSalary is '+realBasicSalary+' and realGrossSalary is '+realGrossSalary+' and realOtherAllowances is '+ realOtherAllowances);
pfBasic = Math.ceil((12/100)*realBasicSalary);
esiGross = Math.ceil((1.75/100)*realGrossSalary);
if(realBasicSalary>10000 && realBasicSalary<=15000){
pTax = 110;
}else if(realBasicSalary>=15001 && realBasicSalary<=25000){
pTax = 130;
}else if(realBasicSalary>=25001 && realBasicSalary<=40000){
pTax = 150;
}else if(realBasicSalary>=40001){
pTax = 200;
}
netAmount = realGrossSalary - (pTax + pfBasic + esiGross + advance);
console.log('realGrossSalary is '+realGrossSalary + ' and realBasicSalary is '+realBasicSalary+
'pTax is '+ pTax+ 'pfBasic is '+pfBasic +'esiGross is '+esiGross);
console.log('namefromhtml is : ', nameFromHtml);
console.log('attendance is :',attendance);
console.log('days present is :',daysPresent);
console.log('monthyear is : ',monthFromHTML);
dataArr.push(monthFromHTML,uanFromHtml,nameFromHtml,daysPresent,realBasicSalary,realOtherAllowances,realGrossSalary,pTax);
finalData.push(dataArr);
/* uanArr.push(uanFromHtml);
nameArr.push(nameFromHtml);
daysArray.push(daysPresent);
*/
console.log('dataArr is : ',dataArr);
console.log('finalData is : ',finalData);
}
var attendanceData = {monthyear :monthFromHTML,rows:rowsLength,uanarr:uanArr,designationarr:designationArr,
namearr:nameArr,finaldata:finalData,realbasicsalary:realBasicSalary,realgrosssalary:realGrossSalary,ptax:pTax,advance:advance};
connection.query("INSERT INTO attendance_details(month_year,uan,name,days_present,real_basic_salary,other_allowances,gross_salary,ptax) VALUES ?",
[finalData], function(err) {
if (err){
var errors = err;
console.log(errors);
res.send(errors);
}else{
//put database query for inserting values here
res.render('attendance-data.ejs', attendanceData);
}
});
});
/*
app.get('/final',function(req,res){
connection.query('SELECT name,designation,salary,wages_rate FROM employee_details;SELECT uan,da,days_present,total_wages FROM attendance_details;',function(err,rows){
if(err){
console.error('MySQL — Error connecting: ' + err.stack);
}else{
var rowsNumber = rows.length;
console.log('rows is :',rows);
var nameFinal;
var designationFinal;
var salaryFinal;
var wagesrateFinal;
var uanFinal;
var daFinal;
var daysFinal;
var totalwagesFinal;
var nameFinalarr = [];
var designationFinalarr =[];
var salaryFinalarr = [];
var wagesrateFinalarr =[];
var uanFinalarr =[];
var daFinalarr =[];
var daysFinalarr = [];
var totalwagesFinalarr =[];
for(var i=0;i<rowsNumber;i++){
nameFinalarr.push(rows[i].name);
designationFinalarr.push(rows[i].designation);
salaryFinalarr.push(rows[i].salary);
wagesrateFinalarr.push(rows[i].wages_rate);
uanFinalarr.push(rows[i].uan);
daysFinalarr.push(rows[i].da);
daysFinalarr.push(rows[i].days_present);
totalwagesFinalarr.push(rows[i].total_wages);
}
console.log('nameFinalarr is :', nameFinalarr);
console.log('daysFinalarr is :', daysFinalarr);
}
res.render('final',{rows:rowsNumber,name:nameFinal,designation:designationFinal,salary:salaryFinal,wagesrate:wagesrateFinal,uan:uanFinal,da:daFinal,
days:daysFinal,
totalwages:totalwagesFinal});
});
});
*/
app.get('/select-month',function(req,res){
connection.query('SELECT month_year,name FROM attendance_details',function(err,rows){
if(err){
throw err;
}else{
var rowsLength = rows.length;
console.log('rows is ',rows);
res.render('select-month.ejs',{rows:rows});
}
});
});
app.get('/salary-sheet',function(req,res){
var month = req.query.selectpicker;
var employeeName = req.query.selectpicker2;
console.log('employeeName is ',employeeName);
connection.query('SELECT * FROM attendance_details WHERE month_year='+"'"+month+"' AND name='"+employeeName+"'",function(err,rows){
if(err){
throw err;
}else{
var rowsLength = rows.length;
console.log('rows is ',rows);
var uanarr=[];
var namearr=[];
var daysarr=[];
var realBasicSalaryarr=[];
var realOtherAllowancesarr=[];
var grossSalaryarr=[];
var ptaxarr=[];
var advance=0;
for(var i=0;i<rowsLength;i++){
uanarr.push(rows[i].uan);
namearr.push(rows[i].name);
daysarr.push(rows[i].days_present);
realBasicSalaryarr.push(rows[i].real_basic_salary);
realOtherAllowancesarr.push(rows[i].other_allowances);
grossSalaryarr.push(rows[i].gross_salary);
ptaxarr.push(rows[i].ptax);
}
console.log('realBasicSalaryarr is ',realBasicSalaryarr);
console.log('namearr is ',namearr);
res.render('salary-sheet.ejs',{advance:advance,rows:rows,monthyear:month,uanarr:uanarr,namearr:namearr,daysarr:daysarr,basicsalaryarr:realBasicSalaryarr,
realotherallowancesarr:realOtherAllowancesarr,realgrosssalaryarr:grossSalaryarr,ptaxarr:ptaxarr});
}
});
});
app.get('/add-company',function(req,res){
res.render('add-company.ejs');
});
app.get('/style.css',function(req,res){
res.sendFile(path.join(__dirname,'/style.css'));
});
app.get('/main.js',function(req,res){
res.sendFile(path.join(__dirname,'/main.js'));
});
app.get('/cmain.js',function(req,res){
res.sendFile(path.join(__dirname,'/cmain.js'));
});
var port=8080;
app.listen(8080,function(req,res){
console.log(`Payroll app listening on port ${port}!` );
});
您能告诉我如何将其转换为桌面应用吗？
答案 0 :(得分：0)
为了使这项工作脱机，换句话说，独立，您需要重新审视有关持久性的方法。 MySQL不是我试图与应用程序捆绑的东西。理想情况下，您可以使用Yonghoon Lee建议的链接，因为您需要应用程序才能拥有嵌入式数据库而不是外部数据库。
我已经成功做了类似的事情，虽然切换到IndexDB意味着我必须重写我的所有查询，因为它是NoSQL数据库。请拒绝使用Web SQL数据库，它不是标准的，可能随时消失。
除此之外，我没有看到任何转换为NWJS应用程序的明显问题。您可以参考the official documentation了解如何入门的一些示例。
答案 1 :(得分：0)
它不容易移植。您不应该期望stackoverflow上的人员为您完成所有工作。这不是一项简单的任务，但我会尽力引导你。
1。）了解NWJS是什么。 NWJS不仅仅是一个node.js服务器，也是一个客户端。这意味着您可以使用node.js的代码和在客户端上运行的javascript代码。
2。）您不需要服务器js。您的应用程序的入口点不是服务器js文件，而是index.html文件。
3.。）你应该将js代码添加到索引html的标记中。她可以使用您要运行的代码创建一个main.js文件，并将其添加为脚本标记。
4.。）使用npm install mysql --save将mysql安装到您的nwjs包中
您必须在包含package.json
5.如果你想使用路线，你必须安装express.js 路由将是您计算机上的localhost路由
现在你必须考虑你真正想做的事情？从哪里可以获得路线？您是否想要一个应用程序，您可以在其中单击按钮，然后将数据提供给mysql数据库？
如果您真的有兴趣将它移植到nwjs，您必须了解nwjs的工作原理。我给了你第一步，但没有进一步的信息，我不能给你更多的建议。
祝你好运。祝你好运。如果您了解nwjs的结构，将很容易移植它;）