将文件转换为 Base64String 并再次返回

本文介绍了将文件转换为 Base64String 并再次返回的处理方法，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

标题说明了一切:

我在 tar.gz 存档中读到这样的文件

将文件分解为字节数组

将这些字节转换为 Base64 字符串

将该 Base64 字符串转换回字节数组

将这些字节写回到新的 tar.gz 文件中

我可以确认两个文件的大小相同(以下方法返回 true)，但我无法再提取副本版本.

I can confirm that both files are the same size (the below method returns true) but I can no longer extract the copy version.

我错过了什么吗?

Boolean MyMethod(){ using (StreamReader sr = new StreamReader("C:...file.tar.gz")) { String AsString = sr.ReadToEnd(); byte[] AsBytes = new byte[AsString.Length]; Buffer.BlockCopy(AsString.ToCharArray(), 0, AsBytes, 0, AsBytes.Length); String AsBase64String = Convert.ToBase64String(AsBytes); byte[] tempBytes = Convert.FromBase64String(AsBase64String); File.WriteAllBytes(@"C:...file_copy.tar.gz", tempBytes); } FileInfo orig = new FileInfo("C:...file.tar.gz"); FileInfo copy = new FileInfo("C:...file_copy.tar.gz"); // Confirm that both original and copy file have the same number of bytes return (orig.Length) == (copy.Length); }

工作示例要简单得多(感谢@T.S.):

The working example is much simpler (Thanks to @T.S.):

Boolean MyMethod(){ byte[] AsBytes = File.ReadAllBytes(@"C:...file.tar.gz"); String AsBase64String = Convert.ToBase64String(AsBytes); byte[] tempBytes = Convert.FromBase64String(AsBase64String); File.WriteAllBytes(@"C:...file_copy.tar.gz", tempBytes); FileInfo orig = new FileInfo(@"C:...file.tar.gz"); FileInfo copy = new FileInfo(@"C:...file_copy.tar.gz"); // Confirm that both original and copy file have the same number of bytes return (orig.Length) == (copy.Length); }

谢谢！

推荐答案

如果您出于某种原因想要将文件转换为 base-64 字符串.就像如果你想通过互联网传递它等等......你可以这样做

If you want for some reason to convert your file to base-64 string. Like if you want to pass it via internet, etc... you can do this

Byte[] bytes = File.ReadAllBytes("path"); String file = Convert.ToBase64String(bytes);

相应地，读回文件:

Byte[] bytes = Convert.FromBase64String(b64Str); File.WriteAllBytes(path, bytes);