On the backend i’m generating a presigned url to upload a json object to an s3 bucket. I want the body actual json to be compressed. This is what i’m doing in the backend: Now, in postman, I manually add the content-encoding: gzip header and the file gets uploaded Issues: 1. If i go to the aws con…
Tag: gzip
Random “Unexpected end of Zlib input stream” exception when trying to gunzip files
I have a class that is supposed to extract a given tar.gz file into a simple .tar file. But for some files this exception is thrown : The method managing the extraction look like this : The strange thing is that the exception is thrown for some files and sometimes it does not, but I can’t figure out why…
Kotlin gzip uncompress fail
I try to simplify my java gzip uncompress code to kotlin. But after I changed, it sames broken. Here is the java code This is my kotlin code. And I got this error. It seems that the decompression process was interrupted by reader? Answer The readText(charset: Charset = Charsets.UTF_8) decodes the bytes into U…
Why is the GZIP “os” header hard-coded to FAT in Java?
RFC 1952 section 2.3.1 specifies that GZIP headers must contain an OS flag: OS (Operating System). This identifies the type of file system on which compression took place. This may be useful in determining end-of-line convention for text files. The currently defined values are as follows: However, Java’…
How to download GZip file from S3?
I have looked at both AWS S3 Java SDK – Download file help and Working with Zip and GZip files in Java. While they provide ways to download and deal with files from S3 and GZipped files respectively, these do not help in dealing with a GZipped file located in S3. How would I do this? Currently I have: C…
java: save string as gzip file
I’m java beginner, I need something like this: String2GzipFile (String file_content, String file_name) String2GzipFile(“Lorem ipsum dolor sit amet, consectetur adipiscing elit.”, “lorem.txt.gz”) I …
How to I find out the size of a GZIP section embedded in firmware?
I am currently analyzing firmware images which contain many different sections, one of which is a GZIP section. I am able to know the location of the start of the GZIP section using magic number and the GZIPInputStream in Java. However, I need to know the compressed size of the gzip section. GZIPInputStream w…
Working with Zip and GZip files in Java
It’s been a while since I’ve done Java I/O, and I’m not aware of the latest “right” ways to work with Zip and GZip files. I don’t necessarily need a full working demo – I’m primarily looking for the right interfaces and methods to be using. Yes, I could look up …