我是 Meteor 的新手，想要制作一个简单的应用程序。我无法根据以下内容在服务器端模拟命令行http://terokaisti.blogspot.com/2012/10/writing-terminal-app-with-meteor-js.html http://terokaisti.blogspot.com/2012/10/writing-terminal-app-with-meteor-js.html
当我在客户端（Mac OSX Mavericks）输入命令并点击“运行”按钮时，结果只是空白。我使用的是上面站点中的确切代码，除了我有 autorun 和 exec = Npm.require('child_process').exec;
下面是我的 html 和 js 文件...
终端应用程序.html
<head>
<title>MeteorJS terminal</title>
</head>
<body>
{{> terminal}}
</body>
<template name="terminal">
<pre>{{ window }}</pre>
<input id="command" type="text" value="{{ last_cmd }}" />
<input type="button" value="Run" />
</template>
终端应用程序.js
// A collection for stdouts
var Replies = new Meteor.Collection('replies');
if(Meteor.is_client) {
// Start listening changes in Replies
Meteor.autorun(function() {
Meteor.subscribe('replies');
});
// Set an observer to be triggered when Replies.insert() is invoked
Replies.find().observe({
'added': function(item) {
// Set the terminal reply to Session
Session.set('stdout', item.message);
}
});
// Show the last command in input field
Template.terminal.last_cmd = function() {
return Session.get('last_cmd');
};
// Show the last shell reply in browser
Template.terminal.window = function() {
return Session.get('stdout');
};
// Add an event listener for Run-button
Template.terminal.events = {
'click [type="button"]': function() {
var cmd = $('#command').val();
Session.set('last_cmd', cmd);
// Call the command method in server side
Meteor.call('command', cmd);
}
};
}
if(Meteor.is_server) {
var exec;
// Initialize the exec function
Meteor.startup(function() {
exec = Npm.require('child_process').exec;
});
// Trigger the observer in Replies collection
Meteor.publish('replies', function() {
return Replies.find();
});
Meteor.methods({
'command': function(line) {
// Run the requested command in shell
exec(line, function(error, stdout, stderr) {
// Collection commands must be executed within a Fiber
Fiber(function() {
Replies.remove({});
Replies.insert({message: stdout ? stdout : stderr});
}).run();
});
}
});
}
我缺少什么？我该如何调试？提前致谢！
这是一个工作示例。输出将在终端中。希望有帮助。
终端.html
<head>
<title>terminal</title>
</head>
<body>
{{> hello}}
</body>
<template name="hello">
<input type="text" id="command">
<input type="button" id="button" value="Click" />
</template>
终端.js
Replies = new Meteor.Collection('replies');
if (Meteor.isClient) {
Template.hello.greeting = function () {
return "Welcome to terminal.";
};
Template.hello.events({
'click #button': function () {
console.log("clicking");
var cmd = $("input#command").val();
console.log("command", cmd);
var replyId = Meteor.call('command', cmd);
Session.set('replyId', replyId);
}
});
}
if (Meteor.isServer) {
exec = Npm.require('child_process').exec;
Meteor.methods({
'command' : function(line) {
console.log("In command method", line);
Fiber = Npm.require('fibers');
exec(line, function(error, stdout, stderr) {
console.log('Command Method', error, stdout, stderr);
Fiber(function() {
Replies.remove({});
var replyId = Replies.insert({message: stdout ? stdout : stderr});
return replyId;
}).run();
});
}
});
}
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