Python 3のURL符号化復号
前言
ブロガーは最近python 3の比較的強力なDjangoでwebを開発したとき、urlの符号化の問題を発見し、ブラウザがapiを要求するとき、urlに男が含まれていると自動的に符号化されます.結果は=>%x%x%x%x%xx%です.3つのパーセント記号が1つの元の文字であればutf 8符号化、2つのパーセント記号であればgb 2312符号化である.符号化と復号化のコードを説明します.
エンコーディング from urllib.parse import quote
text = quote(text, 'utf-8')
注意:textは符号化する文字列です
デコード from urllib.parse import unquote
text = unquote(text, 'utf-8')
ソースコード def unquote(string, encoding='utf-8', errors='replace'):
"""Replace %xx escapes by their single-character equivalent. The optional
encoding and errors parameters specify how to decode percent-encoded
sequences into Unicode characters, as accepted by the bytes.decode()
method.
By default, percent-encoded sequences are decoded with UTF-8, and invalid
sequences are replaced by a placeholder character.
unquote('abc%20def') -> 'abc def'.
"""
if '%' not in string:
string.split
return string
if encoding is None:
encoding = 'utf-8'
if errors is None:
errors = 'replace'
bits = _asciire.split(string)
res = [bits[0]]
append = res.append
for i in range(1, len(bits), 2):
append(unquote_to_bytes(bits[i]).decode(encoding, errors))
append(bits[i + 1])
return ''.join(res)
def quote(string, safe='/', encoding=None, errors=None):
"""quote('abc def') -> 'abc%20def'
Each part of a URL, e.g. the path info, the query, etc., has a
different set of reserved characters that must be quoted.
RFC 2396 Uniform Resource Identifiers (URI): Generic Syntax lists
the following reserved characters.
reserved = ";" | "/" | "?" | ":" | "@" | "&" | "=" | "+" |
"$" | ","
Each of these characters is reserved in some component of a URL,
but not necessarily in all of them.
By default, the quote function is intended for quoting the path
section of a URL. Thus, it will not encode '/'. This character
is reserved, but in typical usage the quote function is being
called on a path where the existing slash characters are used as
reserved characters.
string and safe may be either str or bytes objects. encoding and errors
must not be specified if string is a bytes object.
The optional encoding and errors parameters specify how to deal with
non-ASCII characters, as accepted by the str.encode method.
By default, encoding='utf-8' (characters are encoded with UTF-8), and
errors='strict' (unsupported characters raise a UnicodeEncodeError).
"""
if isinstance(string, str):
if not string:
return string
if encoding is None:
encoding = 'utf-8'
if errors is None:
errors = 'strict'
string = string.encode(encoding, errors)
else:
if encoding is not None:
raise TypeError("quote() doesn't support 'encoding' for bytes")
if errors is not None:
raise TypeError("quote() doesn't support 'errors' for bytes")
return quote_from_bytes(string, safe)
from urllib.parse import quote
text = quote(text, 'utf-8')注意:textは符号化する文字列です
デコード from urllib.parse import unquote
text = unquote(text, 'utf-8')
ソースコード def unquote(string, encoding='utf-8', errors='replace'):
"""Replace %xx escapes by their single-character equivalent. The optional
encoding and errors parameters specify how to decode percent-encoded
sequences into Unicode characters, as accepted by the bytes.decode()
method.
By default, percent-encoded sequences are decoded with UTF-8, and invalid
sequences are replaced by a placeholder character.
unquote('abc%20def') -> 'abc def'.
"""
if '%' not in string:
string.split
return string
if encoding is None:
encoding = 'utf-8'
if errors is None:
errors = 'replace'
bits = _asciire.split(string)
res = [bits[0]]
append = res.append
for i in range(1, len(bits), 2):
append(unquote_to_bytes(bits[i]).decode(encoding, errors))
append(bits[i + 1])
return ''.join(res)
def quote(string, safe='/', encoding=None, errors=None):
"""quote('abc def') -> 'abc%20def'
Each part of a URL, e.g. the path info, the query, etc., has a
different set of reserved characters that must be quoted.
RFC 2396 Uniform Resource Identifiers (URI): Generic Syntax lists
the following reserved characters.
reserved = ";" | "/" | "?" | ":" | "@" | "&" | "=" | "+" |
"$" | ","
Each of these characters is reserved in some component of a URL,
but not necessarily in all of them.
By default, the quote function is intended for quoting the path
section of a URL. Thus, it will not encode '/'. This character
is reserved, but in typical usage the quote function is being
called on a path where the existing slash characters are used as
reserved characters.
string and safe may be either str or bytes objects. encoding and errors
must not be specified if string is a bytes object.
The optional encoding and errors parameters specify how to deal with
non-ASCII characters, as accepted by the str.encode method.
By default, encoding='utf-8' (characters are encoded with UTF-8), and
errors='strict' (unsupported characters raise a UnicodeEncodeError).
"""
if isinstance(string, str):
if not string:
return string
if encoding is None:
encoding = 'utf-8'
if errors is None:
errors = 'strict'
string = string.encode(encoding, errors)
else:
if encoding is not None:
raise TypeError("quote() doesn't support 'encoding' for bytes")
if errors is not None:
raise TypeError("quote() doesn't support 'errors' for bytes")
return quote_from_bytes(string, safe)
from urllib.parse import unquote
text = unquote(text, 'utf-8')def unquote(string, encoding='utf-8', errors='replace'):
"""Replace %xx escapes by their single-character equivalent. The optional
encoding and errors parameters specify how to decode percent-encoded
sequences into Unicode characters, as accepted by the bytes.decode()
method.
By default, percent-encoded sequences are decoded with UTF-8, and invalid
sequences are replaced by a placeholder character.
unquote('abc%20def') -> 'abc def'.
"""
if '%' not in string:
string.split
return string
if encoding is None:
encoding = 'utf-8'
if errors is None:
errors = 'replace'
bits = _asciire.split(string)
res = [bits[0]]
append = res.append
for i in range(1, len(bits), 2):
append(unquote_to_bytes(bits[i]).decode(encoding, errors))
append(bits[i + 1])
return ''.join(res)def quote(string, safe='/', encoding=None, errors=None):
"""quote('abc def') -> 'abc%20def'
Each part of a URL, e.g. the path info, the query, etc., has a
different set of reserved characters that must be quoted.
RFC 2396 Uniform Resource Identifiers (URI): Generic Syntax lists
the following reserved characters.
reserved = ";" | "/" | "?" | ":" | "@" | "&" | "=" | "+" |
"$" | ","
Each of these characters is reserved in some component of a URL,
but not necessarily in all of them.
By default, the quote function is intended for quoting the path
section of a URL. Thus, it will not encode '/'. This character
is reserved, but in typical usage the quote function is being
called on a path where the existing slash characters are used as
reserved characters.
string and safe may be either str or bytes objects. encoding and errors
must not be specified if string is a bytes object.
The optional encoding and errors parameters specify how to deal with
non-ASCII characters, as accepted by the str.encode method.
By default, encoding='utf-8' (characters are encoded with UTF-8), and
errors='strict' (unsupported characters raise a UnicodeEncodeError).
"""
if isinstance(string, str):
if not string:
return string
if encoding is None:
encoding = 'utf-8'
if errors is None:
errors = 'strict'
string = string.encode(encoding, errors)
else:
if encoding is not None:
raise TypeError("quote() doesn't support 'encoding' for bytes")
if errors is not None:
raise TypeError("quote() doesn't support 'errors' for bytes")
return quote_from_bytes(string, safe)