如何在nodejs中发送文件,我正在创建一个页面应用程序,所以我只想要首次请求abcd.html页面, 这是我的代码
app.js
var express = require('express'),
app = express(),
http = require('http'),
path = require('path'),
fs = require('fs'),
mysql = require('mysql'),
server = http.createServer(app),
passport = require('passport'),
flash = require('connect-flash'),
useragent = require('express-useragent'),
io = require('socket.io').listen(server);
// configuration ===============================================================
// connect to our database
require('./config/passport')(passport); // pass passport for configuration
app.use(express.static(path.join(__dirname, 'public')));
app.use(app.router);
app.configure(function() {
app.set('views', path.join(__dirname, 'app/views'));
app.set('view engine', 'ejs'); // set up ejs for templating
// required for passport
app.use(express.session({secret: 'vidyapathaisalwaysrunning',key: 'myuser.sid',cookie: { secure: false,maxAge:null}} )); // session secret1
//app.use(express.session({secret: 'vidyapathaisalwaysrunning', key: 'myownsid', cookie: { secure: false, maxAge: 3600000 }} )); // session with expitation
//app.use(express.session({ key: 'express.sid', secret: 'vidyapathaisalwaysrunning' } )); // 2 cookieId ie connect.sid & express.sid(user defined) session secret1
//app.use(express.session({ store: sessionStore, secret: 'vidyapathaisalwaysrunning',cookie: {httpOnly: false},key: 'cookie.sid' } )); // session secret
// set up our express application
app.use(express.logger('dev')); // log every request to the console
app.use(express.cookieParser()); // read cookies (needed for auth)
app.use(express.bodyParser()); // get information from html forms
app.use(useragent.express());
app.use(express.json());
app.use(express.urlencoded());
app.use(express.methodOverride());
app.use(passport.initialize());
app.use(passport.session()); // persistent login sessions
app.use(flash()); // use connect-flash for flash messages stored in session
app.use(express.static(path.join(__dirname, 'public')));
});
// development only
if ('development' == app.get('env')) {
app.use(express.errorHandler());
}
//routes ======================================================================
require('./app/controller.js')(app, passport,io); // load our routes and pass in our app and fully configured passport
//require('./app/socket')(app,io);
// launch ======================================================================
server.listen(8080);
对该页面的回复
case '/':
/*response.writeHead(200, {'Content-Type': 'text/html'});
response.write('hello world');*/
//response.json({ message: 'hello' });
response.sendfile("../public/abcd.html");
break;
它总是在发送后不能设置标题,这是控制台输出
错误:禁止 在SendStream.error(/home/pitu/CODING/NODE-PROJECTS/chichat/node_modules/express/node_modules/send/lib/send.js:145:16) 在SendStream.pipe(/home/pitu/CODING/NODE-PROJECTS/chichat/node_modules/express/node_modules/send/lib/send.js:30:39) 在ServerResponse.res.sendfile(/home/pitu/CODING/NODE-PROJECTS/chichat/node_modules/express/lib/response.js:339:8) at /home/pitu/CODING/NODE-PROJECTS/chichat/app/controller.js:18:21 在回调中(/home/pitu/CODING/NODE-PROJECTS/chichat/node_modules/express/lib/router/index.js:161:37) 在param(/home/pitu/CODING/NODE-PROJECTS/chichat/node_modules/express/lib/router/index.js:135:11) 通过(/home/pitu/CODING/NODE-PROJECTS/chichat/node_modules/express/lib/router/index.js:142:5) 在Router._dispatch(/home/pitu/CODING/NODE-PROJECTS/chichat/node_modules/express/lib/router/index.js:170:5) 在Object.router(/home/pitu/CODING/NODE-PROJECTS/chichat/node_modules/express/lib/router/index.js:33:10) 在下一个(/home/pitu/CODING/NODE-PROJECTS/chichat/node_modules/express/node_modules/connect/lib/proto.js:190:15) _http_outgoing.js:331 抛出新错误('在发送后无法设置标头。'); ^错误:发送后无法设置标头。 在ServerResponse.OutgoingMessage.setHeader(_http_outgoing.js:331:11) 在ServerResponse.res.setHeader(/home/pitu/CODING/NODE-PROJECTS/chichat/node_modules/express/node_modules/connect/lib/patch.js:59:22) at /home/pitu/CODING/NODE-PROJECTS/chichat/node_modules/express/node_modules/connect/lib/middleware/errorHandler.js:63:17 在fs.js:292:14 在Object.oncomplete(fs.js:93:15)
参考截图 怎么做
答案 0 :(得分:-2)
var event= require('./models/event');
var url = require('url');
var fs = require("fs");
//var app1 = require('../../app').app;
module.exports = function(app, passport,io)
{
//app.get('/createevent',event.createevent);
app.get('*', function(request, response)
{
var path = url.parse(request.url).pathname;
//use request object to get user data
//response.render('index');
switch(path){
case '/':
/*response.writeHead(200, {'Content-Type': 'text/html'});
response.write('hello world');*/
//response.json({ message: 'hello' });
//response.sendfile('../../public/abcd.htm', {root: __dirname })
response.sendfile('./public/abcd.htm');
break;
case '/creteevent':
console.log(" inside createevent ");
response.render('index123',{ title: 'The index page!' });
break;
case '/eventmember':
//response.render('index');
//this method is good becz below code , calling same as 4 both socket & http req
event.eventmember(function(err,returnedvalue)
{
if(returnedvalue){
console.log(" member result "+returnedvalue);
response.json(returnedvalue);
}else{
console.log(" member err "+ err);
}
});
break;
case '/eventtags':
var str = '{"eventid" :"2","associatedtags":["2","3"]}';
//response.render('index');
//this method is good becz below code , calling same as 4 both socket & http req
event.eventtags(str,function(err,returnedvalue)
{
if(returnedvalue){
console.log(" post result "+returnedvalue);
}else{
console.log(" posting err "+ err);
}
});
break;
case '/post':
var str = '{"eventid" :"2","selfid" :"2","title" :"feeedback to event","content" :"bla bla bla","lattitude" :"","longitude" :"","createddatetime" :"","posttype" :"idea","isapporved" :"no","isanonymous" :"no"}';
//response.render('index');
//this method is good becz below code , calling same as 4 both socket & http req
event.post(str,function(err,returnedvalue)
{
if(returnedvalue){
console.log(" post result "+returnedvalue);
}else{
console.log(" posting err "+ err);
}
});
break;
default:
response.writeHead(404);
response.write("opps this doesn't exist - 404");
break;
}
//just remove this line,& it worked, becz 2 response for a single request
***response.end();***
});
};