In my node.js app I`m trying to respond with an image.
在我的node.js应用程序中,我试图用图像进行响应。
This image was saved before postgresql as text.
此图像在postgresql之前保存为文本。
The text looks just like this:
文字看起来像这样:
data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAPAAAAE
But when I try to return it as an image:
但是当我尝试将其作为图像返回时:
res.type('image/png');
res.send(image_string);
Or binary:
或二进制:
res.send(image_string,'binary');
It shows a empty image-element:
它显示了一个空的图像元素:
What do I wrong?Thanks
我错了什么?谢谢
1 个解决方案
#1
3
I solved it by using a buffer:
我通过使用缓冲区解决了它:
var im = image_string.split(",")[1];
var img = new Buffer(im, 'base64');
res.writeHead(200, {
'Content-Type': 'image/png',
'Content-Length': img.length
});
res.end(img);
#1
3
I solved it by using a buffer:
我通过使用缓冲区解决了它:
var im = image_string.split(",")[1];
var img = new Buffer(im, 'base64');
res.writeHead(200, {
'Content-Type': 'image/png',
'Content-Length': img.length
});
res.end(img);