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[英]Can I pass a variable in Javascript to a child_process.exec command?
[英]Using child_process.exec to send a command returning 404
我有一個使用NodeJ的簡單服務器設置,我想從中將命令發送到服務器上的終端。
我正在嘗試使用child_process.exec發送命令,當我從終端運行時該命令可以正常工作。
我遇到的問題是找不到POST方法/ unLock。 作為回應,我得到了。
POST /unLock 404 1.770 ms - 1186
我已經在下面包含了服務器和路由/視圖的代碼,我是node的新手,正嘗試學習,以便對您有所幫助。
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 index = require('./routes/index');
var users = require('./routes/users');
var exec = require('child_process').execSync;
var util = require('util')
//var exec = require('child_process').exec;
var app = express();
app.use( bodyParser.json() ); // to support JSON-encoded bodies
app.use(bodyParser.urlencoded({ // to support URL-encoded bodies
extended: true
}));
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
app.get('/javascript/jquery.min.js', function (req, res) {
res.sendFile( __dirname + "/javascript" + "/jquery.min.js" );
});
// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__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('/', index);
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);
});
app.post('/', function(req, res) {
console.log(req.body);
res.send(200);
});
//trying to send command here
//recieiving 404
app.post('/unLock', function (req, res) {
exec("ls -la", {stdio:[0,1,2]});
res.send(200);
console.log("button clicked");
});
// error handler
app.use(function(err, req, res, next) {
// set locals, only providing error in development
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
// render the error page
res.status(err.status || 500);
res.render('error');
});
module.exports = app;
var express = require('express');
var router = express.Router();
router.get('/', function(req, res){
res.render('index', {
title: 'Home'
});
});
router.get('/login', function(req, res){
res.render('login', {
title: 'login'
});
});
router.get('/unLock', function(req, res){
console.log("hello"); //this doesnt work
});
router.get('/contact', function(req, res){
res.render('contact', {
title: 'Contact'
});
});
module.exports = router;
<!DOCTYPE html>
<html>
<script language="JavaScript" type="text/javascript" src="/javascripts/jquery.min.js"></script>
<script>
function unLock() {
$.ajax({
type: 'POST',
url: '/unLock',
data: '',
success: function (data) {
}
});
}
//call button.js
</script>
<head>
<title><%= title %></title>
<link rel='stylesheet' href='/stylesheets/style.css' />
</head>
<body>
<h1><%= title %></h1>
<p>Welcome to SecureLock - beta 1.0</p>
<form><input type='button' value='unLock' onclick='unLock()'/></form>
</body>
</html>
謝謝。
在您的unLock()
JS函數中,您可以使用POST
方法進行AJAX調用,但是在您的路由中
router.get('/unLock', function(req, res){
...
});
因此沒有辦法響應POST
。 將上面的行更改為router.post
或將AJAX方法更改為鍵入GET
。 如果您實際上沒有通過AJAX調用將任何數據發送到服務器,則可能是后者。
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