问题
This is a really basic question, but I'm trying to change the favicon of my node.js/Express app with
app.use(express.favicon(__dirname + '/public/images/favicon.ico'));
and I'm still getting the default favicon. This is in my app.configure function, and yes, I've verified that there is a favicon.ico in the /public/images/favicon.ico.There's nothing about a favicon.ico in the console, either, which leads me to believe that this line of code is being ignored. Everything else in the function (setting port, setting views directory, setting template engine. etc.) seems to be working fine, so why would this line of code not be executing?
What I tried
- Emptying browser cache
- Restarting Terminal and running
node app.jsagain - Adding
{ maxAge: 2592000000 }, as described here
Thanks in advance.
Update: I got it to work. See my answer below for more information.
回答1:
I tried visiting the site in Safari for the first time (I normally use Chrome) and noticed that it was showing the correct favicon. I tried clearing my cache in Chrome again (twice) to no avail, but after more searching, I found that apparently favicons aren't stored in the cache. I "refreshed my favicon" using the method described here and it worked!
Here's the method (modified from the above link), in case the link goes dead:
- Open Chrome/the problematic browser
- Navigate to the favicon.ico file directly, e.g. http://localhost:3000/favicon.ico
- Refresh the favicon.ico URL by pressing F5 or the appropriate browser Refresh (Reload) button
- Close the browser and open your website - voila, your favicon has been updated!
回答2:
What worked for me finally:
Look that the
app.use(express.favicon(__dirname + '/public/images/favicon.ico'));
is at the beginning of the app configuration function. I had it before at the end. As the Express doc says: 'The order of which middleware are "defined" using app.use() is very important, they are invoked sequentially, thus this defines middleware precedence.'
I didn't need to set any maxAge.
To test it:
- Restart the server with
node app.js - Clear the browser cache
- Refresh the Favicon with directly accessing it by using "localhost:3000/your_path_to_the favicon/favicon.ico" and reloading
回答3:
The above answer is no longer valid.
If you use
app.use(express.favicon(__dirname + '/public/images/favicon.ico'));
You'll get this error:
Error: Most middleware (like favicon) is no longer bundled with Express and must be installed separately
What you're going to need to do is get serve-favicon.
run
npm install serve-favicon --save
then add this to your app
var express = require('express');
var favicon = require('serve-favicon');
var app = express();
app.use(favicon(__dirname + '/public/images/favicon.ico'));
回答4:
What worked for me follows. Set express to serve your static resources as usual, for example
app.use(express.static('public'));
Put favicon inside your public folder; Then add a query string to you icon url, for example
<link rel="icon" type="image/x-icon" href="favicon.ico?v="+ Math.trunc(Math.random()*999)>
In this case, Chrome is the misbehaving Browser; IE. Firefox. Safari (all on Windows) worked fine, WITHOUT the above trick.
回答5:
Simplest way I could come up with (valid only for local dev, of course) was to host the server on a different port
PORT=3001 npm run start
回答6:
smiley favicon to prevent error:
var favicon = new Buffer('AAABAAEAEBAQAAAAAAAoAQAAFgAAACgAAAAQAAAAIAAAAAEABAAAAAAAgAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAA/4QAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEREQAAAAAAEAAAEAAAAAEAAAABAAAAEAAAAAAQAAAQAAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAEAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD//wAA//8AAP//AAD8HwAA++8AAPf3AADv+wAA7/sAAP//AAD//wAA+98AAP//AAD//wAA//8AAP//AAD//wAA', 'base64');
app.get("/favicon.ico", function(req, res) {
res.statusCode = 200;
res.setHeader('Content-Length', favicon.length);
res.setHeader('Content-Type', 'image/x-icon');
res.setHeader("Cache-Control", "public, max-age=2592000"); // expiers after a month
res.setHeader("Expires", new Date(Date.now() + 2592000000).toUTCString());
res.end(favicon);
});
to change icon in code above
make an icon maybe here: http://www.favicon.cc/ or here :http://favicon-generator.org
convert it to base64 maybe here: http://base64converter.com/
then replace the icon base 64 value
general information how to create a personalized fav icon
icons are made using photoshop or inkscape, maybe inkscape then photoshop for vibrance and color correction (in image->adjustments menu).
for quick icon goto http://www.clker.com/ and pick some Vector Clip Arts, and download as svg. then bring it to inkscape and change colors or delete parts, maybe add something from another vector clipart image, then to export select the parts to export and click file>export, pick size like 16x16 for favicon or 32x32, for further edit 128x128 or 256x256. ico package can have several icon sizes inside. it can have along with 16x16 pixel fav icon a high quality icons for link for the website.
then maybe enhance the imaage in photoshop. like vibrance bivel round mask , anything.
then upload this image to one of the websites that generate favicons. there are also programs for windows for editing icons(search like "windows icon editor opensource", figure our how to create two images of different size inside a single icon).
to add the favicon to website. just put the favicon.ico as a file in your root domain files folder. for example in nodejs in public folder that contans the static files. it doesn't have to be anything special like code above just a simple file.
回答7:
Have you tried clearing your browser's cache? Maybe the old favicon is still in the cache.
回答8:
How to do this without express:
if (req.method == "GET") {
if (/favicon\.ico/.test(req.url)) {
fs.readFile("home/usr/path/favicon.ico", function(err, data) {
if (err) {
console.log(err);
} else {
res.setHeader("Content-Type","image/x-icon");
res.end(data);
}
});
}
来源：https://stackoverflow.com/questions/11658035/unable-to-change-favicon-with-express-js