我有一个用户要求来标识客户端Web浏览器的串行端口。在VS 2017中使用Node js。
'use strict';
var debug = require('debug');
var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var routes = require('./routes/index');
var users = require('./routes/users');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'pug');
// uncomment after placing your favicon in /public
//app.use(favicon(__dirname + '/public/favicon.ico'));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use('/', routes);
app.use('/users', users);
// catch 404 and forward to error handler
app.use(function (req, res, next) {
var err = new Error('Not Found');
err.status = 404;
next(err);
});
// error handlers
// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
app.use(function (err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: err
});
});
}
// production error handler
// no stacktraces leaked to user
app.use(function (err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: {}
});
});
app.set('port', process.env.PORT || 3000);
extends layout
block content
h1= title
p Welcome to #{title}
var express = require('express'),
server = require('http').createServer(app);
io = require('socket.io').listen(server);
serialPort = require('serialport');
var portName = '/ACPI/PNP0501/1';
var readData = '';
var sp = new serialPort(portName, {
baudRate : 115200,
dataBits : 8,
parity : 'none',
stopBits : 1,
});
sp.open(function (error) {
if ( error ) {
console.log('failed to open: ' + error);
} else {
console.log('serial port opened');
serialport_opened = true;
// get data from connected device via serial port
serialPort.on('data', function(data) {
// get buffered data and parse it to an utf-8 string
data = data.toString('utf-8');
// you could for example, send this data now to the the client via socket.io
// io.emit('emit_data', data);
});
serialPort.on('error', function(data) {
console.log('Error: ' + data);
})
}
});
C:\ Users \ IWPC002 \ source \ repos \ ExpressApp1 \ ExpressApp1 \ views \ index.pug:22:1 20 |平价:“无”,21 | stopBits:1,> 22 | }); -------- ^ 23 | 24 | sp.open(function(error){25 | if(error){意外文本“});” 错误:C:\ Users \ IWPC002 \ source \ repos \ ExpressApp1 \ ExpressApp1 \ views \ index.pug:22:1 20 |平价:“无”, 21 | stopBits:1,
22 | }); -------- ^ 23 | 24 | sp.open(函数(错误){ 25 |如果(错误){
意外的文字“}); ” 在makeError(C:\ Users \ IWPC002 \ source \ repos \ ExpressApp1 \ ExpressApp1 \ node_modules \ pug-error \ index.js:32:13) 在Lexer.error(C:\ Users \ IWPC002 \ source \ repos \ ExpressApp1 \ ExpressApp1 \ node_modules \ pug-lexer \ index.js:59:15) 在Lexer.fail(C:\ Users \ IWPC002 \ source \ repos \ ExpressApp1 \ ExpressApp1 \ node_modules \ pug-lexer \ index.js:1441:10) 在Lexer.advance(C:\ Users \ IWPC002 \ source \ repos \ ExpressApp1 \ ExpressApp1 \ node_modules \ pug-lexer \ index.js:1501:15) 在Lexer.callLexerFunction(C:\ Users \ IWPC002 \ source \ repos \ ExpressApp1 \ ExpressApp1 \ node_modules \ pug-lexer \ index.js:1456:23) 在Lexer.getTokens(C:\ Users \ IWPC002 \ source \ repos \ ExpressApp1 \ ExpressApp1 \ node_modules \ pug-lexer \ index.js:1512:12) 在lex(C:\ Users \ IWPC002 \ source \ repos \ ExpressApp1 \ ExpressApp1 \ node_modules \ pug-lexer \ index.js:12:42) 在Object.lex(C:\ Users \ IWPC002 \ source \ repos \ ExpressApp1 \ ExpressApp1 \ node_modules \ pug \ lib \ index.js:99:27) 在Function.loadString [作为字符串]处(C:\ Users \ IWPC002 \ source \ repos \ ExpressApp1 \ ExpressApp1 \ node_modules \ pug-load \ index.js:44:24) 在compileBody(C:\ Users \ IWPC002 \ source \ repos \ ExpressApp1 \ ExpressApp1 \ node_modules \ pug \ lib \ index.js:86:18)