AWS: how to fix S3 event replacing space with '+' sign in object key names in json

Question

I have a lamba function to copy objects from bucket \'A\' to bucket \'B\', and everything was working fine, until and object with name \'New Text Document.txt\' was created

Answer 1

I came across this looking for a solution for a lambda written in python instead of java; "urllib.parse.unquote_plus" worked for me, it properly handled a file with both spaces and + signs:

from urllib.parse import unquote_plus
import boto3


bucket = 'testBucket1234'
# uploaded file with name 'foo + bar.txt' for test, s3 Put event passes following encoded object_key
object_key = 'foo %2B bar.txt'
print(object_key)
object_key = unquote_plus(object_key)
print(object_key)

client = boto3.client('s3')
client.get_object(Bucket=bucket, Key=object_key)