将base64字符串转换为字节数组并以mp3文件格式保存 [英] convert base64 string into byte array and save in mp3 file format

问题描述

将base64字符串转换为字节数组并保存为mp3文件格式

convert base64 string into byte array and save in mp3 file format

推荐答案

假设Base64字符串是一个MP3文件，您只需要Convert.FromBase64String方法 [ ^ ]

Assuming the Base64 string is an MP3 file, all you need is the Convert.FromBase64String Method[^]

byte[] bytes = System.Convert.FromBase64String(stringInBase64);
File.WriteAllBytes(@"D:\Temp\myFile.mp3", bytes);

如果不是，那么它会看起来像一个MP3，直到一个应用程序试图打开它，它什么时候会无法播放。

If it isn't, then it will look like an MP3 until an app tries to open it, when it will fail to play.

function saveBase64AsAudioFile(folderpath,filename,content,contentType){
    // Convert the base64 string in a Blob
    var DataBlob = b64toBlob(content,contentType);

    console.log("Starting to write the file :3");

    window.resolveLocalFileSystemURL(folderpath, function(dir) {
        console.log("Access to the directory granted succesfully");
        dir.getFile(filename, {create:true}, function(file) {
            console.log("File created succesfully.");
            file.createWriter(function(fileWriter) {
                console.log("Writing content to file");
                fileWriter.write(DataBlob);
            }, function(){
                alert('Unable to save file in path '+ folderpath);
            });
        });
    });
}

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