[英]Fetching an image from a website with Node.js
我正在制作自己的Discord機器人,並且以前沒有使用JS的經驗。 我正在制作一個功能,可以從以下網站下載並發布圖像: http : //random.dog
當我知道圖片的確切鏈接時,我已經從其他地方成功下載了圖像。 這是我的代碼的相關部分:
var download = function(uri, filename, callback){
request(uri).pipe(fs.createWriteStream(filename)).on('close', callback);}
download('http://random.dog/14769-27888-18622.jpg', 'dog.png',
我正在使用此請求模塊https://www.npmjs.com/package/reques ,是否可以通過該模塊獲取沒有確切URL的圖像?
您可以動態獲取URL並下載帶有名稱的圖片的人,您需要這兩個模塊
request-promise, cheerio,
var app = require('express')();
var http = require('http').Server(app);
fs = require('fs');
var fs = require('fs'),
request = require('request');
//save image
var download = function(uri, filename, callback){
request.head(uri, function(err, res, body){
request(uri).pipe(fs.createWriteStream(filename)).on('close', callback);
});
};
//get URL
var Imgpath="";
var rp = require('request-promise'),
cheerio = require('cheerio'),
url = require('url'),
base = 'http://random.dog/';
var options = {
uri: base,
method: 'GET',
resolveWithFullResponse: true
};
rp(options)
.then (function (response) {
$ = cheerio.load(response.body);
var relativeLinks = $("img");
relativeLinks.each( function() {
var link = $(this).attr('src');
var fullImagePath = url.resolve(base, link); // should be absolute
//pass to download to download image link is file name and base is base url
download(base+link,link,function()
{
console.log("wao great we done this...THINK DIFFERENT")
})
});
});
app.listen(3000);
console.log("server start");
app.get('/',function(req,res){
res.sendfile(__dirname + '/a.html');
});
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