Mam ciąg w formacie base64, który reprezentuje obraz PNG. Czy istnieje sposób na zapisanie tego obrazu w systemie plików jako plik PNG?
Zakodowałem obraz używając flexa. Właściwie to otrzymuję na serwerze (nie widzę żadnego obrazu po żadnej z proponowanych metod :()
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Odpowiedzi:
Począwszy od
Dekodowano dane przy użyciu kodeka base64, a następnie zapisano w systemie plików.
Modernizacja tego przykładu do Pythona 3, która usunęła obsługę dowolnego kodeka z ciągu / bajtów
.encode()
i.decode()
funkcji:źródło
b'foobar'
ponieważ nie robię ciągu inlineJeśli imagestr były dane bitmapowe (które teraz wiemy, że nie są), możesz tego użyć
imagestr
to ciąg zakodowanywidth
w formacie base64 to szerokość obrazuheight
to wysokość obrazuPonieważ imagestr to tylko zakodowane dane png
źródło
Możesz również zapisać go w buforze ciągów, a następnie zrobić z nim, co chcesz,
W django możesz zapisać go jako przesłany plik, aby zapisać go w modelu:
Lub wyślij jako e-mail:
źródło
Możesz użyć poduszki.
odniesienie do pełnego kodu źródłowego: https://abhisheksharma.online/convert-base64-blob-to-image-file-in-python/
źródło
źródło
Prawdopodobnie mógł korzystać z innych pakietów PyPNG za
png.Reader
obiekt to zrobić - zdekodować ciąg base64 do regularnego łańcucha (poprzezbase64
biblioteki standardowej) i przekazać go do konstruktora.źródło
Wypróbuj to rozwiązanie,
plik obrazu -> ciąg zakodowany binarnie
ciąg zakodowany binarnie -> plik obrazu
Bibliografia:
źródło
Jeśli próbujesz zdekodować obraz internetowy, możesz po prostu użyć tego:
data => to zakodowany ciąg
Zadba o błędy wypełnienia
źródło