Delphi中System.Zip中文文件名乱码解决

Posted 2021-01-14 huixch

新版本Delphi中自带的Zip单元System.Zip使用很方便，但是在压缩文件中包含中文路径或文件名时解压后是乱码，这一点儿确实挺烦人。

之所以会出现乱码是由以下两个函数造成的：

 1 function TZipFile.TBytesToString(B: TBytes): string;
 2 var
 3   E: TEncoding;
 4 begin
 5   if FUTF8Support then 
 6     E := TEncoding.GetEncoding(65001)
 7   else
 8     E := TEncoding.GetEncoding(437);
 9   try
10     Result := E.GetString(B);
11   finally
12     E.Free;
13   end;
14 end;

 1 function TZipFile.StringToTBytes(S: string): TBytes;
 2 var
 3   E: TEncoding;
 4 begin
 5   if FUTF8Support then 
 6     E := TEncoding.GetEncoding(65001)
 7   else
 8     E := TEncoding.GetEncoding(437);
 9   try
10     Result := E.GetBytes(S);
11   finally
12     E.Free;
13   end;
14 end;

将上面红色标记的代码中CodePage修改为936即可解决，或者直接替换掉这两个函数：

1 function TZipFile.TBytesToString(B: TBytes): string;
2 begin
3   if FUTF8Support then
4     Result := TEncoding.UTF8.GetString(B)
5   else
6     Result := TEncoding.Default.GetString(B);
7 end;

1 function TZipFile.StringToTBytes(S: string): TBytes;
2 begin
3   if FUTF8Support then
4     Result := TEncoding.UTF8.GetBytes(S)
5   else
6     Result := TEncoding.Default.GetBytes(S);
7 end;