通过IE，ADODB.Stream将二进制文件从base64文本数据保存到硬盘 [英] Saving binary file from base64 text data by IE, ADODB.Stream to hard disk

问题描述

尝试通过IE，ADODB.Stream在客户端保存二进制文件时出现问题。

I had a problem when try to saving a binary file by IE, ADODB.Stream on client.

假设客户端的浏览器具有将文件写入的完全权限硬盘。

Assume the the client's browser has full permission to write file to hard disk.

这是我的客户端代码，由javascript支持。：

Here is my client code witten by javascript.:

var base64_encoded_string = "base64 string of a binary file";
var data = window.atob(base64_encoded_string);
var stream = new ActiveXObject("ADODB.Stream");
stream.Type = 1; // text
stream.Open();
stream.Write(data); //Problem in here
stream.SaveToFile("D:\\Whatever.pfx", 2);
stream.Close();

因为我标记的问题来自于编写二进制数据。我总是遇到错误：

As I marked problem come from writing binary data. I always got error:

参数类型错误，超出可接受的范围，或者彼此冲突

无论我格式化还是将数据变量更改为字节数组，blob ......

Whatever I format or change data variable to array of bytes, blob ...

请帮我怎么做在这种情况下输入数据来写二进制文件。

Please help me how to input data to write binary file in this circumstance.

推荐答案

你需要使用 WriteText

stream.WriteText(data); 

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