node.js - 将数据 URI 保存为图像？

Question

在 Node 服务器上，我想将上传的 datauri 数据保存为图像。为此，我尝试解码此 png 的内容-

data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAACCAIAAAFlEcHbAAAAB3RJTUUH1gMWFjk7nUWcXQAAAAlwSFlzAABOIAAATiABFn2Z3gAAAARnQU1BAACxjwv8YQUAAAAeSURBVHjaY7h79y7DhAkTGIA04/Tp0xkYGJ49ewYAgYwLV/R7bDQAAAAASUVORK5CYII=

并将其保存为 .png 扩展名。看起来还有更多。如何解码 datauri 并将其保存为文件？

Answer 1

我创建了一个与 Node.js 一起使用的库，它有助于对数据 URI 方案进行编码和解码。相信可以帮到你，查看:

https://github.com/DiegoZoracKy/image-data-uri

使用这个库，在你的情况下，代码将是:

'use strict';

const ImageDataURI = require('image-data-uri');

const dataURI = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAACCAIAAAFlEcHbAAAAB3RJTUUH1gMWFjk7nUWcXQAAAAlwSFlzAABOIAAATiABFn2Z3gAAAARnQU1BAACxjwv8YQUAAAAeSURBVHjaY7h79y7DhAkTGIA04/Tp0xkYGJ49ewYAgYwLV/R7bDQAAAAASUVORK5CYII=';
const fileName = 'decoded-image.png';

ImageDataURI.outputFile(dataURI, filePath);