这些Buffer.from toString（'base64'）无法正常转换 - 我缺少什么？

Question

在runkit上检查此nodejs：

https://runkit.com/hollerith/5a726441d9a9770013dcce93

拥有copypasta的众多资源提供了获取此特定图像并将其转换为base64编码数据uri的方法。

var requestBase64 = require('base64-img').requestBase64;
var request = require('request');
var got = require("got");

url = 'http://c1.staticflickr.com/2/1442/26088546654_d034205325_n.jpg';

response = await got(url);
const buf = Buffer.from(response.body, 'binary');
const data = buf.toString('base64');
console.log(`data:image/jpeg;base64,${data}`);

requestBase64(url, function (error, response, body) {
  console.log(body);
});

request(url, function (error, response, body) {
  const buf = Buffer.from(body, 'binary');
  const data = buf.toString('base64');
  console.log(`data:image/jpeg;base64,${data}`);
});

只有requestBase64有效：为什么不是其他人？

Answer 1

您可以将{encoding: null}传递给request，它会返回与requestBase64相同的数据。

request(url, {encoding: null}, function (error, response, body) {
  const buf2 = Buffer.from(body, 'binary');
  const data2 = buf2.toString('base64');
  console.log(`data:image/jpeg;base64,${data2}`);
});

类似于got库，您可以传递编码。

response = await got(url, { encoding: null });