调整节点js中的图片大小 [英] Resize image in node js

问题描述

我想先调整图像大小，然后再将其上传到s3(amazon). 我尝试使用"resizeImg"功能，但是其上载功能以标准尺寸而不是新尺寸上载图像. 我的代码写在节点js中，然后上传到s3-amazon. 图片名称为:beach_life-normal.jpg

I want to resize my images before I upload them to s3 (amazon). I try to use 'resizeImg' function but its dosent work the image upload in standart size, and not in the new size. my code write in node js and then upload to s3-amazon. image name is:beach_life-normal.jpg

我的代码:

var AWS = require('aws-sdk'),
    fs = require('fs');
var express = require("express");
var app = express();

const resizeImg = require('resize-img');

// For dev purposes only
AWS.config.update({ accessKeyId: 'key', secretAccessKey: 'secret' });

var fileStream = fs.createReadStream('beach_life-normal.jpg');
fileStream.on('error', function (err) {
  if (err) { throw err; }
});  

fileStream.on('open', function () {
  var s3 = new AWS.S3();

resizeImg(fs.readFileSync('beach_life-normal.jpg'), {width: 128, height:  128}).then(buf => {
    fs.writeFileSync('beach_life-normal-new.jpg', buf);
});


  s3.putObject({
    Bucket: 'adinoauploadefile',
    Key: 'beach_life-normal.jpg',
    Body: fileStream
  }, function (err) {
    if (err) { throw err; }
  });

});

推荐答案

您应该上传新文件

var AWS = require('aws-sdk'),
fs = require('fs');
var express = require("express");
var app = express();

const resizeImg = require('resize-img');

// For dev purposes only
AWS.config.update({ accessKeyId: 'key', secretAccessKey: 'secret' });

var fileStream = fs.createReadStream('beach_life-normal.jpg');
fileStream.on('error', function (err) {
  if (err) { throw err; }
});  

fileStream.on('open', function () {
  var s3 = new AWS.S3();

resizeImg(fs.readFileSync('beach_life-normal.jpg'), {width: 128, height:  128}).then(buf => {
    fs.writeFileSync('beach_life-normal-new.jpg', buf);
    s3.putObject({
      Bucket: 'adinoauploadefile',
      Key: 'beach_life-normal-new.jpg',
      Body: 'beach_life-normal-new.jpg'
    }, function (err) {
     if (err) { throw err; }
    });
  });  
});

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