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我使用的是「表達」節點JS的模塊按例子here在節點上使用Express模塊JS不工作
當我嘗試和運行服務器，然後打開「本地主機：8000」，我得到一個錯誤：
Error: No default engine was specified and no extension was provided.
at new View (/home/anr/node_modules/express/lib/view.js:41:42)
at Function.app.render (/home/anr/node_modules/express/lib/application.js:486:12)
at ServerResponse.res.render (/home/anr/node_modules/express/lib/response.js:798:7)
at app.post.res.send.status (/home/anr/Desktop/node js/mvc/ntwitter.js:16:7)
at callbacks (/home/anr/node_modules/express/lib/router/index.js:164:37)
at param (/home/anr/node_modules/express/lib/router/index.js:138:11)
at pass (/home/anr/node_modules/express/lib/router/index.js:145:5)
at Router._dispatch (/home/anr/node_modules/express/lib/router/index.js:173:5)
at Object.router (/home/anr/node_modules/express/lib/router/index.js:33:10)
at next (/home/anr/node_modules/express/node_modules/connect/lib/proto.js:193:15)
我已經加入了文件夾結構，在那裏，現在諧音文件夾包括：
chirps.html index.html styles.html view0.html
view0由基本的HTML模板：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<!-- There is a call to partial here-->
<%- partial('partials/stylesheet', stylesheets) %>
<title><%= title %></title>
</head>
<body>
<h1><%= header %></h1>
<%- body %>
</body>
</html>
我的索引部分代碼是在這裏：
<form method="POST" action="/send">
<input type="text" length="140" name="tweet"/>
<input type="submit" value="Tweet"/>
</form>
<%- partial('partials/chirp','tweets') %>
這是我的啁啾部分：
<p><%= chirps %></p>
這是我的app.js：
var express=require('express');
//express gets http behind the scenes...
var app = express.createServer();
app.listen(8000);
var tweets=[];
//use http verbs instead of registering event listeners to http
//responds only to a get request...
app.get('/',function(req,res){
//a conveniance method that does request headers,sends the message and ends the response
//res.send('Welcome to Node Twitter');
var title='Chirpie',
header='Welcome To Chirpie';
res.render('index', {
locals:{
'title':title,
'header':header,
'tweets':tweets,
//'stylesheets':['public/style.css']
}
});
});
//the second argument in the post request is known as middleware
app.post('/send',express.bodyParser(),function(req,res){
if(req.body && req.body.tweet) {
tweets.push(req.body.tweet);
if (acceptsHtml(req.headers['accept'])); {
console.log('tweet recieved');
res.redirect('/', 302); // the 302 status code indicates that this is not a permanent move
//go to /send before redirecting every time
}
} else {
console.log('tweet recieved');
res.send({ status: 'ok', message: 'tweet recieved' });
}
});
app.get('/tweets',function(req,res) {
res.send(tweets);
});
function acceptsHtml(header) {
var accepts=header.split(',');
for(var i=0;i<accepts.length;i+=1) {
if(accepts[i]==='text/html') return true;
}
return false;
}
編輯：
個是被通過的意見修正了一些問題：
1. Fixed `if (acceptsHtml(req.headers['accept']));`.Removed the semicolon there.
2.The files have to use `.ejs` unless the render specifies it as `.html` which requires the html module.Also move the `index.ejs` to `views`.
3.The reference to `chirp.ejs` was removed.Another point to note would be that the rendering engine is supposed to handle these calls now, the function `partial` no longer. exists,if you wish to use something like that use `include` instead.
因此，在這一切結束了這條路線的響應代碼：
app.get('/',function(req,res){
//a conveniance method that does request headers,sends the message and ends the response
//res.send('Welcome to Node Twitter');
var title='Chirpie',
header='Welcome To Chirpie';
res.render('index',
{
locals:{
'title':title,
'header':header,
'tweets':tweets,
}
});
});
'如果（acceptsHtml（req.headers [ '接受']））;：
app = express.createServer()後，添加此{'有一個以分號結尾的聲明，這是不正確的 –