本文介绍了如何保存 ArrayBuffer?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如何将 ArrayBuffer 保存在 json 文件中?我为此使用了电子配置,但在 config.json 中我找到了{}".我尝试转换(代码) ArrayBuffer 到字符串,但是我不能将字符串转换为ArrayBuffer.
How to save an ArrayBuffer in json file? I use electron-config for this, but in config.json I found "{}". I try convert (code) ArrayBuffer to string, but then I can't convert string to ArrayBuffer.
put: function(key, value) {
//value = { prop1: <ArrayBuffer>, prop2: <ArrayBuffer> }
if (key === undefined || value === undefined || key === null || value === null)
return;
var prop1Str,prop2Str;
prop1Str = this.ab2str(value.prop1);
prop2Str = this.ab2str(value.prop2);
var chValue = {prop1:prop1Str, prop2:prop2Str};
config.set(key,chValue);
console.log(value.prop1 === this.str2ab(config.get(key).prop1)); //===> FALSE
},
ab2str: function(buf) {
return String.fromCharCode.apply(null, new Uint8Array(buf));
},
str2ab: function(str) {
var buf = new ArrayBuffer(str.length);
var bufView = new Uint16Array(buf);
for (var i=0, strLen=str.length; i < strLen; i++) {
bufView[i] = str.charCodeAt(i);
}
return buf;
}
推荐答案
为了保存到磁盘,您应该能够使用普通节点 API 将内容写入磁盘.例如:
For saving to disk, you should be able to use the normal node APIs for writing something to disk. For example:
require('fs').writeFileSync('/path/to/saved/file', Buffer.from(myArrayBuffer));
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