Django + Postgres：将带有 NUL (0x00) 字符的 PDF 文件保存到 DB 并将其解码回 PDF

Question

I have a pdf file that I want to save in my Postgres DB

When I tried to save the file it brings A string literal cannot contain NUL (0x00) characters. so I followed the solution from here which replaces the null with a character

unicode(ppbData[0], errors='ignore').replace("\\x00", "\�")

The problem is that I can't convert it back to PDF now. I tried encode() and other methods

file = open('new.pdf', 'wb')
file.write(text.encode())
file.close()

but it returns blank pdf



Is there any way to replaces the character with a null or any other way to convert it back to normal pdf? Maybe the first solution with replacing also wasn't right and there is another way?

Answer 1

I have a pdf file that I want to save in my Postgres DB

When I tried to save the file it brings A string literal cannot contain NUL (0x00) characters. so I followed the solution from here which replaces the null with a character

unicode(ppbData[0], errors='ignore').replace("\\x00", "\�")

The problem is that I can't convert it back to PDF now. I tried encode() and other methods

file = open('new.pdf', 'wb')
file.write(text.encode())
file.close()

but it returns blank pdf



Is there any way to replaces the character with a null or any other way to convert it back to normal pdf? Maybe the first solution with replacing also wasn't right and there is another way?