本文介绍了在Node.js中保存从URL保存图像的问题的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在尝试从网站上抓取数据，但是我从服务器目录中打开图像时却收到文件加载图像时发生错误之类的错误。图像存储有扩展名，但图像无法正确打开
var request = require（'request'）;
var cheerio = require（’cheerio’）;
const fs = require（ fs）;
函数hello（）{
url =’’;
request（url，function（error，response，html）{
if（！error）{
var $ = cheerio.load（html）;
var img = $（'img.control-label'）;
var img_url = $（'img.control-label'）。attr（'src'）
console.log（img ）;
console.log（url + img_url）;
request（{url：url + img_url，headers：{Cookie：response.headers，encoding：null}}，function（error1 ，response1，body）{
if（！error）{
path1 ='./image/new.jpeg';
data = data： + response.headers [ content- type] +; base64， + new Buffer（body）.toString（'base64'）;
console.log（data）;
fs.writeFile（path1，body，{encoding：' base64'}，function（err）{
}）;
}
}）
}
}）
}
hello（）;
以下是写入文件之前数据的控制台日志的结果
'pre>
数据：text / html的; base64,77 + 977 + 977 + 977 + 9ABBKRklGAAEBAAABAAEAAO + / VE + / vQA7Q1JFQVRPUjogZ2QtanBlZyB2MS4wICh1c2luZyBJSkcgSlBFRyB2OTApLCBxdWFsaXR5ID0gODAK77 + 977 + 9AEMABgQFBgUEBgYFBgcHBggKEAoKCQkKFA4PDBAXFBgYFxQWFhodJR8aGyMcFhYgLCAjJicpKikZHy0wLSgwJSgpKO + / VE + / vQBDAQcHBwoIChMKChMoGhYaKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCjvv73vv70AEQgAGQBBAwEiAAIRAQMRAe + / VE + / vQAfAAABBQEBAQEBAQAAAAAAAAAAAQIDBAUGBwgJCgvvv73vv70A77 + 9EAACAQMDAgQDBQUEBAAAAX0BAgMABBEFEiExQQYTUWEHInEUMu + / VE + / VE + / + vQgjQu / VE + / + vRVS77 977 + 9JDNicu + / vQkKFhcYGRolJicoKSo0NTY3ODk6Q0RFRkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1dnd4eXrvv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv73vv7 3vv73vv73vv73vv73vv73vv73vv70AHwEAAwEBAQEBAQEBAQAAAAAAAAECAwQFBgcICQoL77 + 977 + 9AO + / vREAAgECBAQDBAcFBAQAAQJ3AAECAxEEBSExBhJBUQdhcRMiMu + / vQgUQu + / VE + / VE + / VE + / vQkjM1Lvv70VYnLvv70KFiQ077 + 9Je + / vRcYGRomJygpKjU2Nzg5OkNERUZHSElKU1RVVldYWVpjZGVmZ2hpanN0dXZ3eHl677 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 977 + 9AAwDAQACEQMRAD8A77 + 9Uu + / ve + / vTwL77 + 977 + 9aF4k77 + 977 + 90bTvv71tQ1c / 77 + 977 + 9We + / vWnvv70p2IDvv71FGDHPVO + / + / ve + 977 + 9e2g177 + 9PDHvv71 / GHjvv73vv71PGFvvv71I2o / vv71v77 + 9AU0u3Ksx77 + 9ee + / VE + / vQBI77 + 9W3Nl77 + 9CO + / VE + / vWDvv70AHh9FfSHvv73vv73vv73vv73vv73vv73vv70 +胡+ / VE + / vS07Se + / vUxtbO + / vW7vv73vv71777 + 9W3Pvv73bgu + / VE + / VE + / vTM777 + 9AO + / vUwN77 + 9FzXvv73vv71 + IO + / vXxx77 + 977 + 977 + 9Ke + / ve + / ve + / vSbvv71W77 + 9anJp77 + 977 + 977 + 9b2Mccjfvv711au + / ve + / vRFdf3Y877 + 9w7Dvv7 0oAWgD77 + 96K + OP，++ / VWX / 77 + 9Yn /酒庄+ / vRXvv73vv70q77 + 9AO + / VE + / VE + / VR / vv715S ++ / vR9m77 + 9P ++ / vT7VjG7vv70 / d ++ / vWfvv73vv73vv71t77 + 9FH7vv73vv70O77 + 977 + 977 + 9ABN4Wu + / VE + / vW0TWda1aGTvv73vv73vv71qVuW0uO + / vQ7vv70EUG / vv71ackLvv73vv73vv70I77 + 9Ue + / vV3vv70D77 + 977 + 9Kmvvv71377 + 977 + 977 + 977 + 9UxNJC ++ / vWxi77 + 9ZEJB77 + 977 + 977 + 9SU + / VE + / vSDvv71677 + 9UO + / vQFFFFAG34Q8Ue + / VE + / vT9ZXVvvv73vv70RWu + / vSjvv70aTO + / VE + / vUxQNwdo77 + 9WCkj77 + 977 + 9HBIz77 + 9cmt + Je + / ve + / vW1S77 + 977 + 9DSI477 + 9xIDvv73vv70277 + 977 + 977 + 9CO + / ve + / vVjvv71PBO + / ve + / vQLvv70o77 + 9De + / vU8Va3Z6BDotv / v + v + vvv / v + V + V + V / v + V + V + V / V + V + V + V / v + V + V + V / V + V + V + V / V + V + V + V / V + V / V + V + V + V / V + V + V + V / V + V + V + V / V + V + V + V vT1y77 + 977 + 977 + 977 + 977 + 977 + 9 + ve + / ve + / vWrvv73vv73vv71D77 + 9eFdd77 + 977 + 9dBvvvv73vv71qVtu877 + 977 + 977 + 977 + 977 + 9bu + / vSjvv70rAg / vv73vv71yO ++ / vU0UAFFFFABRRRQB77 + 977 + 9
待处理（结点:)安全和d可用性问题。请改用Buffer.alloc（），Buffer.allocUnsafe（）或Buffer.from（）方法。
编辑1：
经过一番尝试，我得出以下结论：当写入以下图像时，图像实际上已转换为某种不同的格式：代码1与我的硬编码uri一起工作，但是当我将相同的代码与URL转换时，会出现异常错误
// console.log（data）;不破坏
binaryData1 = data：image / jpeg; base64， + body.toString（）;
base64Data1 = binaryData1.replace（/ ^ data：image\ / jpeg; base64，/，）;
binaryData1 =新的Buffer（base64Data1，'base64'）。toString（'binary'）;
的console.log（主体）
//工作
binaryData =数据：图像/ JPEG; BASE64，/ 9J / 4AAQSkZJRgABAQAAAQABAAD / 2wCEAAkGBxMTEhUTExMVFhUXGBcYFxcYGBgXGBgXGhcXFxcaFxcYHSggGholHxcYITEhJSkrLi4uHR8zODMtNygtLisBCgoKBQUFDgUFDisZExkrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrK // AABEIAQwAvAMBIgACEQEDEQH / xAAbAAACAwEBAQAAAAAAAAAAAAAEBQIDBgcBAP / EADoQAAEDAgUCAwYGAQQBBQAAAAEAAhEDIQQFEjFBUWEicYEGEzKRodEUQlKxwfAjBzPh8WIVQ4KSsv / EABQBAQAAAAAAAAAAAAAAAAAAAAD / xAAUEQEAAAAAAAAAAAAAAAAAAAAA / 9oADAMBAAIRAxEAPwBK + kqXUU0NNVmkgVuoqDaEkBNDRXtCj42lBfg / ZR1Rs6gD0IP7ypu9iq / BYfUj + FsMtxcNu0IqtmrWj4T8wg55U9lsQPyT5EKh2QVh / WC0 / WCU / sugjO6fLXD0 + yIp5zQ / VHmCP3CDl1TLnjdpHmCFUcKuw0sVRds9h9Ql + ZYOk8wQ2PRByz8OVD3JXW8L7M0HN8VNvy / LQR + xWGOzSPJx / koOTgHqvveOXSq3sFSOz3j5H + EUR + wTvy1B6t + xQYcViETRqSnz / YnETbSR5kKp / spimXNOe4c0 / wAoEdUlU + 8KYV6JaYcII3CHLUA5fZI8ebp7WFln8Z8SAQhRIU3KBKCBC8XpXkoOqwvCxXNavQ1AP7tVVWXTANVLWS9AZgA9osUS2TuiqFMBqqG6C04KUvxeH08J7QqCEJmIBC BZQc3mE2wlJpCzjqoBTrB4xoAQNW13M2cY8z9EUcxdFn / sk7sU07FC4it0QMaueVQbFpHcfYhW08 + dHiYPQx91nHTK9dUd6INZhs9by0j5FFVs3pFvI8wf4WKw73SisRioagSe1WLY6pLR5lZ41gjs1dJSmpTKD7EVJCR4lplM6jShns7IFrmlQdKYuYFW6kEC8rxGOoqBoIOq6VPSvmhThBFeYJkvlWO2S8YvQ6UGnqtGnuhhSJQlHMdUQn2BpSJKBbLgVVipIKfnChD4nCiEHOc2rPDrDlQpZhVA + ErVYnLGuPqpDKWoMwzOHDcH5KYzed0 + qZKDwhquRDogEp5oJiU1w1TUJSp2ThpnZM8M0NG6A1jI3QmYVrQqMZmQDSCJMFIG5tqmRHZBLFCShHtU6uIvZeapCAaoxDvporUJUHNQAVKKpcxHuCpc0IAnBQRLqarLEHTGhWBQYFMIPqmyzmYk6loq5skNZsuQX5POoLoGXt8KxGUU / EFvMEPCEFxCAzCrATGEuzClIQJDUkoqmVClhjKMbhzwgrY8EwvMSWtFyAk + KzRrXP4NMeInaCbLBZr7W1n1iGPls6YgQeCP4QaLN / aLQSYaI2Lj8R / 8QL + pIWWzHOn1R8enmGiPmboHF4kHc33P / aW4rEAfbp590Del7QOFiZOwJjV68Kp + Zk3CUYY6t / 78wrvdTsf4QHjHSb3V9DNI32SV8jdS1WkeoQaeljGOPEq / 3gNlkW14TnLcZqME8IGTgqnBEOVZagGe1UlqJcFW5B0NqsCqaVYghiDZLG0CbwYTOoJIHdaDAZSS2YQZfCHQZMp5Rz5ogSh / aHCaGExwuXfjCa0AndB2uhmjTypVsW0rL5Fhy5oMlF4qi5uxKBzTrNRge2FmqGEquEjdG0MBiOyDFf6gYMl5q0z4RZ7dj5kdJJ + a55Uo6IM3InyXYPabCODTqaHRM79L7cbLluaQCBv1KBIKt5THIvZ + rineEEM5cRb06p jkGQurObUcz / 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Czbcwd0b9fuimZi4HZvyP3QajTVcNJcSIuJFr8gcyAovNYeEW5tpnYAeZtY7rPNzN1 / C36 / dTOaviIbv0P3QPalXEsBEn807Hzm3RAYjM6jWnxQACB4RYHja4mLdktdmr5JhvPB535QmY5g5zHSG8Hngg9UFH / rTvfOe4z + UHsD2 / sQnmEz1jvzQsHUrGBYbKptczwg6g3MWkbhU1sxHVc4di3jZxXjsfU / Ug2eKx7eoWexlUONjab2niQNxaQfLvsk7sS47lWYSsQTt63QGVduv7Xtx5qgN2DZJPESV9QfJFgATsJt5SVosE4MHhY3zMk / OUFeUZI4w6pYfp + / RaOlSbTEAADtZKH5m + dm / I / dDVszfPH1 + 6B + / FIepjFnzmL + 31 + 6pfjndvr90DypjJVL8ZCRnGO7KQxB6D6oGzcWhazryhPxR6D6 / deVcSeg + v3QEF6rKC / EHsvffnsg // 2Q =;
base64Data = binaryData.replace（/ ^ data：image\ / jpeg; base64，/，）;
binaryData =新的Buffer（base64Data，'base64'）。toString（'binary'）;
console.log（binaryData）
fs.writeFile（ out1.jpg，binaryData， binary，函数（err）{//工作
if（err）
console.log（ ERROR： + err）; //写出没有错误的文件，但这不是有效的图像
}）;
fs.writeFile（ out2.jpg，body， binary，function（err）{//不起作用
if（err）
console.log（ ERROR： + err）; //正确地写出文件，但是它不是有效的图像
}）;
解决方案
替换
fs.writeFile（path1，body，{encoding：'base64'}，function（err）{
}）;
有
fs.writeFile（path1，'data：image / jpeg; base64'，+ new Buffer（body）.toString（'base64'），{encoding：'base64'}，function（err）{
}）;
I'm trying to scrap data from website while scrapping it i'm getting error like file "An error ocured while loading image" while opening image from my server directory.image is stored with extension but the image is not opening properly
var request = require('request');
var cheerio = require('cheerio');
const fs = require("fs");
function hello (){
url = '';
request(url, function(error, response, html){
if(!error){
var $ = cheerio.load(html);
var img = $('img.control-label');
var img_url = $('img.control-label').attr('src')
console.log(img);
console.log(url+img_url);
request({url: url+img_url, headers: {Cookie: response.headers,encoding:null }}, function(error1, response1, body){
if(!error){
path1 = './image/new.jpeg';
data = "data:" + response.headers["content-type"] + ";base64," + new Buffer(body).toString('base64');
console.log(data);
fs.writeFile(path1, body, {encoding: 'base64'}, function(err){
});
}
})
}
})
}
hello();
below is the result of the console log of data before writing the file
EDIT 1:
after some tries I've come to this that image actually converted to some diffrent format when to write following are the code 1 is working with my hard coded encoded uri but when i convert same code with URL it's giving the unusual errors
//console.log(data); not wrking
binaryData1 = "data:image/jpeg;base64,"+body.toString();
base64Data1 = binaryData1.replace(/^data:image\/jpeg;base64,/, "");
binaryData1 = new Buffer(base64Data1, 'base64').toString('binary');
console.log(body)
//working
binaryData = "data:image/jpeg;base64,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";
base64Data = binaryData.replace(/^data:image\/jpeg;base64,/, "");
binaryData = new Buffer(base64Data, 'base64').toString('binary');
console.log(binaryData)
fs.writeFile("out1.jpg", binaryData, "binary", function (err) {//working
if(err)
console.log("ERROR : "+err); // writes out file without error, but it's not a valid image
});
fs.writeFile("out2.jpg", body, "binary", function (err) { //not working
if(err)
console.log("ERROR : "+err); // writes out file without error, but it's not a valid image
});
解决方案
Replace
fs.writeFile(path1, body, {encoding: 'base64'}, function(err){
});
With
fs.writeFile(path1, 'data:image/jpeg;base64,' + new Buffer(body).toString('base64'), {encoding: 'base64'}, function(err){
});
这篇关于在Node.js中保存从URL保存图像的问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！