如何在不使用Convert.from64BaseString(strinput)的情况下以字节为单位转换"+"和"/"? [英] How to convert '+' and '/' in byte without using Convert.from64BaseString(strinput)?

问题描述

我的代码用于url的加密和解密.
但是在解密中，convert.from64BaseString(strinput)中会发生错误，因为它无法转换``+"和``/''.

My code is for encryption and decryption of url.
But in decryption an error occurs in convert.from64BaseString(strinput), because it fails to convert ''+'' and ''/'' .

How can I convert ''+''and ''/'' char in byte, without using convert.from64BaseString() ?

推荐答案

怎么办?转换两个字符都不应该失败，它们都使用默认的base64字符集: http://en.wikipedia.org/wiki /Base64 [ ^ ]
当我尝试时，效果很好:

What is the error? It should not fail to convert either character, they are both in teh default base64 character set: http://en.wikipedia.org/wiki/Base64[^]
When I try, it works fine:

string unicode = "ABCDEFG+/abcedfg";
byte[] ascii = System.Text.Encoding.ASCII.GetBytes(unicode);
string base64 = Convert.ToBase64String(ascii);
byte[] convertBack = Convert.FromBase64String(base64);
string regenerated = System.Text.Encoding.ASCII.GetString(convertBack);
Console.WriteLine(unicode);
Console.WriteLine(regenerated);

您的代码有何不同?

How is your code different?

我认为您误解了您的问题.我以前看过你的问题.

您的问题不是转换，而是将字符串作为url QueryString传递.

字符"+"不会作为查询字符串传递，您将获得一个空格.因此，您需要将其替换为其他字符(在附加查询字符串之前)，例如，将@替换为+并执行链接(可能是您需要检查已具有@的字符串，替换为尚未包含在其中的字符)字符串，可以是替换字符，也可以在查询字符串中作为参数传递).在目标页面中，您可能需要将@替换为+.这样您将获得原始字符串，然后可以进行转换和比较.

Hi

I think you have misunderstood your problem. I have seen your question before.

Your problem is not converting, your problem is passing the string as a url QueryString.

the char ''+'' will not be passed as query string, you will get a blank space. So you need to replace it with other char (before appending the query string), for example replace + with @ and execute the link (may be you need to chk your string already having a @, replace with a char which is not already in the string, may be the replace char also can be passed as a parameter in the querystring). In the target page you may need to replace the @ with the + . So you will get the original string and then you can convert and compare.

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