将base64数据URL转换为angularjs中的图像文件
问题描述：
我的angularJs控制器中有base64数据URL，我需要一个图像文件，以便可以通过ajax将其作为多部分数据发送到服务器吗?
I have base64 data URL in my angularJs controller, and I need an image file from that, so that I could send it to server as multi-part data through ajax?
我正在寻找诸如angularjs中的文件编写器之类的东西. 有人可以帮我吗?
I'm looking for something like file writer in angularjs. Can anyone help me please?
答
您可以从base64数据生成blob.
you can generate blob from base64 data.
var imageBase64 = "image base64 data";
var blob = new Blob([imageBase64], {type: 'image/png'});
从该blob中，您可以生成文件对象.
From this blob, you can generate file object.
var file = new File([blob], 'imageFileName.png');
您可以使用此文件对象，并使用多部分数据将其发布到服务器.
You can use this file object and post it to server using multipart data.