Postgresql 输入不是UTF-8编码的

我的数据库是

utf8

aware：

                                   List of databases
   Name    |     Owner     | Encoding |  Collate   |   Ctype    |
-----------+---------------+----------+------------+------------+
 tucha     | tucha_cleaner | UTF8     | en_US.utf8 | en_US.utf8 | 

当我连接到它时，我设置

客户端\u编码

：

my $hm_schema = App::Schema->connect( $dsn, $user, $pass, {
        AutoCommit => 1,
        RaiseError => 1,
        client_encoding => 'UTF8',
    }
);

据我所知，返回的值是UTF8：

DBG>$value
["Нд", "Пн", "Вт", "Ср", "Чт", "Пт", "Сб"]

DBG>use Devel::Peek

DBG>Devel::Peek::Dump $value
SV = PVMG(0xfe41c20) at 0xfe079b0
  REFCNT = 1
  FLAGS = (POK,IsCOW,pPOK,UTF8)
  IV = 0
  NV = 0
  PV = 0xfe27550 "[\"\320\235\320\264\", \"\320\237\320\275\", \"\320\222\321\202\", \"\320\241\321\200\", \"\320\247\321\202\", \"\320\237\321\202\", \"\320\241\320\261\"]"\0 [UTF8 "["\x{41d}\x{434}", "\x{41f}\x{43d}", "\x{412}\x{442}", "\x{421}\x{440}", "\x{427}\x{442}", "\x{41f}\x{442}", "\x{421}\x{431}"]"]
  CUR = 56
  LEN = 58
  COW_REFCNT = 4
undef

但是当我试图从

Mojo:：json

中通过

decode_json

解码该字符串时，我得到了错误：

DBG> decode_json $value
ERROR: Input is not UTF-8 encoded at ...

---

为什么会出现此错误以及如何修复它？

字符串的前5个字符如下（十六进制）：

UTF-8等字符编码是使用字节表示代码点的方法，其中两个字符不是字节，因此您的字符串不可能使用UTF-8进行JSON编码

似乎您有一个已解码的字符串。已删除字符编码以生成Unicode代码点字符串。如果这是您拥有的，请更换

JSON::decode_json($json_utf8)
JSON::MaybeXS::decode_json($json_utf8)
JSON::PP::decode_json($json_utf8)
JSON::XS::decode_json($json_utf8)
Cpanel::JSON::XS::decode_json($json_utf8)

与

---

顺便说一句，除非您想了解Perl的内部结构，否则Devel:：Peek不是适合这项工作的工具。您应该改用Data:：Dumper或类似工具

use Data::Dumper qw( Dumper );
# This is the same string as in the OP.
my $value = qq{["\x{41d}\x{434}", "\x{41f}\x{43d}", "\x{412}\x{442}", "\x{421}\x{440}", "\x{427}\x{442}", "\x{41f}\x{442}", "\x{421}\x{431}"]};
local $Data::Dumper::Useqq = 1;
print(Dumper($value));

输出：

$VAR1 = "[\"\x{41d}\x{434}\", \"\x{41f}\x{43d}\", \"\x{412}\x{442}\", \"\x{421}\x{440}\", \"\x{427}\x{442}\", \"\x{41f}\x{442}\", \"\x{421}\x{431}\"]";

---

对我来说，这些看起来不像是编码字符：如果它们是编码的，你将无法读取它们！改为使用来自json的

。如果您必须猜测输出的含义，请不要使用
Devel:：Peek
：perl用于表示字符串的内部编码无关紧要。@Borodin:啊，我应该只在ByTestStream上使用
decode\u json
use Data::Dumper qw( Dumper );
# This is the same string as in the OP.
my $value = qq{["\x{41d}\x{434}", "\x{41f}\x{43d}", "\x{412}\x{442}", "\x{421}\x{440}", "\x{427}\x{442}", "\x{41f}\x{442}", "\x{421}\x{431}"]};
local $Data::Dumper::Useqq = 1;
print(Dumper($value));

$VAR1 = "[\"\x{41d}\x{434}\", \"\x{41f}\x{43d}\", \"\x{412}\x{442}\", \"\x{421}\x{440}\", \"\x{427}\x{442}\", \"\x{41f}\x{442}\", \"\x{421}\x{431}\"]";