[英]Byte array into an image Node.js
I have a long array of bytes, with numbers from 0 to 255, and I know it's an image, so how can I save it like a file? 我有一个长字节数组,数字从0到255,我知道它是一个图像,因此如何将其保存为文件? I have tried a lot of things, but not success.
我尝试了很多事情,但没有成功。
The image is created but won't open because it's damaged. 映像已创建,但由于损坏而无法打开。
File .js 文件.js
function saveImage(filename, data){
//Data = [1,6,2,23,255,etc]
var wstream = fs.createWriteStream(ARTWORK_PATH+filename);
for (var i = 0; i < data.length; i++) {
wstream.write(data[i].toString('base64'));
}
wstream.end();
}
Why use base64 encoding? 为什么要使用base64编码? If your image data in the data parameter as binary, you can write it.
如果您的图像数据中的data参数为二进制,则可以将其写入。
fs.writeFile(filename, data, "binary", function(){...});
I solved it doing this! 我这样做解决了!
It was as simple as use a buffer... 就像使用缓冲区一样简单...
function saveImage(filename, data){
var myBuffer = new Buffer(data.length);
for (var i = 0; i < data.length; i++) {
myBuffer[i] = data[i];
}
fs.writeFile(ARTWORK_PATH+filename, myBuffer, function(err) {
if(err) {
console.log(err);
} else {
console.log("The file was saved!");
}
});
}
saveImage("image.jpg", [0,43,255,etc]);
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