将字符串转换为网页安全的Base64格式 [英] Converting string to web-safe Base64 format

问题描述

我正在测试如何使用带有Google Apps脚本的Admin SDK目录服务使用以下功能更新用户图片：

 函数updatePhoto（）{
 var fileId ='XXXXXXXXXXXXXXXXXXX'; 
 var b = DocsList.getFileById（fileId）.getBlob（）; 
 var encoded = Utilities.base64Encode（b.getBytes（））; 
 
 encoded = encoded.replace（/ \ // g，'_'）。replace（/ \ + / g，' - '）。replace（/ \ = / g，' *'）; 
 AdminDirectory.Users.Photos.update（{
photoData：encoded}，'[e-mail]'）; 
} 
  

然而，它并不总是奏效。每当base64编码字符串中有填充时，就会失败。请参阅Google的文档（ https://developers.google。 com / admin-sdk / directory / v1 / reference / users / photos / update ），我对这些描述有些困惑。它说：

1. 等号（=）字符替换为星号（*）。
   
2. 对于填充，使用句点（。）字符而不是
   RFC-4648 baseURL定义，该定义对
   填充使用等号（=）。这是为了简化URL解析。

实际应该做什么？ （=）用于Base64中的填充。那么，我应该使用（*）还是（。）？我确实尝试用（。）替换（=），但没有运气。

任何人都可以帮忙吗？

---

这太奇怪了。它可以工作，当我不替换（=）。

pre $ function updatePhoto（）{
var fileId ='XXXXXXXXXXXXXXXXXXX' ;
var b = DocsList.getFileById（fileId）.getBlob（）;
var encoded = Utilities.base64Encode（b.getBytes（））;

encoded = encoded.replace（/ \ // g，'_'）。replace（/ \ + / g，' - '）;
AdminDirectory.Users.Photos.update（{
photoData：encoded}，'[e-mail]'）;


}

解决方案该API要求您使用URL安全的base64编码。在完成base64编码之后，尝试用 _ 和 + / c>与 - 。详细信息：

https://developers.google.com/admin-sdk/directory/v1/reference/users/photos/update

I am testing how to update user picture using the Admin SDK Directory Service with Google Apps Scripts with the following function:

function updatePhoto(){
  var fileId = 'XXXXXXXXXXXXXXXXXXX';
  var b = DocsList.getFileById(fileId).getBlob();
  var encoded = Utilities.base64Encode(b.getBytes());

  encoded = encoded.replace(/\//g,'_').replace(/\+/g,'-').replace(/\=/g,'*');
  AdminDirectory.Users.Photos.update({
    "photoData": encoded },'[e-mail]');
}

However, it doesn't always work. Whenever there is padding in the base64 encoded string, it fails. Referring to Google's document (https://developers.google.com/admin-sdk/directory/v1/reference/users/photos/update), I am a bit confused with the descriptions. It says:

1. The equals sign (=) character is replaced with the asterisk (*).
2. For padding, the period (.) character is used instead of the RFC-4648 baseURL definition which uses the equals sign (=) for padding. This is done to simplify URL-parsing.

What should be actually done? (=) is used for padding in Base64. So, should I use (*) or (.)? I did try to replace (=) with (.) but no luck.

Can anyone help?

---

It is so strange. It works when i do not replace (=).

function updatePhoto(){
  var fileId = 'XXXXXXXXXXXXXXXXXXX';
  var b = DocsList.getFileById(fileId).getBlob();
  var encoded = Utilities.base64Encode(b.getBytes());

  encoded = encoded.replace(/\//g,'_').replace(/\+/g,'-');
  AdminDirectory.Users.Photos.update({
    "photoData": encoded },'[e-mail]');

}

解决方案

The API requires you to use URL-safe base64 encoding. After doing the base64 encoding, try replacing / with _ and + with -. Details at:

https://developers.google.com/admin-sdk/directory/v1/reference/users/photos/update

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