e6 b5 8b e8 af 95的编码是什么 [英] What is the encoding of e6 b5 8b e8 af 95

问题描述

我有一个文本数据源，其中包括字节序列 e6 b5 8b e8 af 95 。在这种情况下，我认为它应该是汉字测试。

I have a source of text data that includes the byte sequence e6 b5 8b e8 af 95. In the context I believe it should be the Chinese character "测试".

我的perl源代码应该使用此字节序列（不幸的是，这不是UTF- 8，但我无法将其编码为UTF-8并解码回去），但在某些情况下，序列变为 c3 a6 c2 b5 c2 8b c3 a8 c2 af c2 95 。

My perl source code is supposed to pick up this byte sequence (unfortunately this is not in UTF-8 and I cannot encode it to UTF-8 and decode back), but under some circumstances the sequence becomes c3 a6 c2 b5 c2 8b c3 a8 c2 af c2 95.

试图找出 c3 和 c2 的可能原因被添加。是类似问题中提到的双重转换问题吗？

Trying to figure out the likely reasons why c3 and c2 are added. Is it the problem of double conversion mentioned in similar question?

推荐答案

06d4b 08bd5 是<$ c $的Unicode代码点c>测试。

b5 8b e8 af 95 是UTF-8编码测试。

c3 a6 c2 b5 c2 8b c3 a8 c2 af c2 95 是测试的UTF-8编码的UTF-8编码。

c3 a6 c2 b5 c2 8b c3 a8 c2 af c2 95 is the UTF-8 encoding of the UTF-8 encoding of 测试.

$ perl -e'
    use strict;
    use warnings;
    use utf8;
    use open ":std", ":encoding(UTF-8)";

    my $s = "测试";
    print "$s\n";
    printf "%v05X\n", $s;

    utf8::encode($s);
    printf "%v02X\n", $s;

    utf8::encode($s);
    printf "%v02X\n", $s;
'
测试
06D4B.08BD5
E6.B5.8B.E8.AF.95
C3.A6.C2.B5.C2.8B.C3.A8.C2.AF.C2.95

---

---

$ perl -MJSON -e'
    use strict;
    use warnings;
    use utf8;
    use open ":std", ":encoding(UTF-8)";

    my $s = "测试";
    printf "%1\$s (%1\$v05X)\n", $s;
    my $data = [ $s ];
    my $json_utf8 = JSON->new->utf8->encode($data);
    printf "%v02X\n", $json_utf8;
    $data = JSON->new->utf8->decode($json_utf8);
    $s = $data->[0];
    printf "%1\$s (%1\$v05X)\n", $s;
'
测试 (06D4B.08BD5)
5B.22.E6.B5.8B.E8.AF.95.22.5D
测试 (06D4B.08BD5)

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