相同的代码在 .net core 和 .net 4.7.2 中给出不同的结果 [英] Same code gives different result in .net core and .net 4.7.2
问题描述
下面是获取字符串Md5值的C#代码
Here is the following C# code to obtain the Md5 value of a string
using System;
using System.Security.Cryptography;
using System.Text;
namespace ConsoleApp1
{
class Program
{
static void Main(string[] args)
{
var urlPart = "dd5fad78903da9d3ce4905f8e731d6c4ýundefinedý3780534ý5";
Console.WriteLine("value= " + urlPart);
var md5val = md5(urlPart, Encoding.Default);
Console.WriteLine("md5= " + md5val);
}
public static string md5(string value, System.Text.Encoding encoding)
{
var buffer = encoding.GetBytes(value);
//Console.WriteLine("buffer= " + BitConverter.ToString(buffer));
MD5 md5Hasher = MD5.Create();
byte[] data = md5Hasher.ComputeHash(buffer);
StringBuilder sBuilder = new StringBuilder();
for (int i = 0; i < data.Length; i++)
{
sBuilder.Append(data[i].ToString("x2"));
}
return sBuilder.ToString();
}
}
}
如果我在 .Net 4.72 上编译,它会给出
If I compiled on .Net 4.72 it gives
md5="b5d0f17bf46f869abf8d8f51156126b7"
md5="b5d0f17bf46f869abf8d8f51156126b7"
如果我在 .Net core 3.0 上编译,它会给出
If I compiled on .Net core 3.0 it gives
md5="96af5cbab2ae75384e0f46a961dcbc4e"
md5="96af5cbab2ae75384e0f46a961dcbc4e"
怎么了,为什么结果不一样???
What's wrong, why different results ???
有人可以帮我吗?
推荐答案
检查
var md5val = md5(urlPart, Encoding.Default);
因为 Encoding.Default
在 .net core 和 系统的活动代码页Utf-8> 在 .net 框架中.
since Encoding.Default
is always Utf-8 in case of .net core and system's active code page in .net framework.
https://docs.microsoft.com/en-us/dotnet/api/system.text.encoding.default?view=netframework-4.8
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