java - Parsing multiple gzipped json files that are contained in a zip inputstream without saving any files to disk (because of google app engine) -

i'm trying parse multiple gzipped json files contained in 1 zip file through inputstream http connection.

i've managed read first file not more. fails , not read whole (first) file. have checked content-length header on connection , same when i'm failing read whole file.

i'm using goole app engine doesn't allow me save files locally of examples i've found doing.

i'm using ziparchiveinputstream https://commons.apache.org/proper/commons-compress/ zip file.

this closely related question i've been able find: how read file containing multiple gzipstreams

private static arraylist<rawevent> parseamplitudeeventarchivedata(httpurlconnection connection)         throws ioexception, parseexception {     string name, line;     arraylist<rawevent> events = new arraylist<>();      try (ziparchiveinputstream zipinput =                  new ziparchiveinputstream(connection.getinputstream(), null, false, true);) {          ziparchiveentry zipentry = zipinput.getnextzipentry();         if (zipentry != null) {              try(gzipinputstream gzipinputstream = new gzipinputstream(connection.getinputstream());             bufferedreader reader = new bufferedreader(new inputstreamreader(gzipinputstream))) {                  name = zipentry.getname();                 log.info("parsing file: " + name);                  while ((line = reader.readline()) != null) {                     events.add(parsejsonline(line));                 }                 log.info("events size: " + events.size());             }         }     }     return events; } 

this works me:

public class unzipzippedfiles {      public static void main(string[] args) throws ioexception, parseexception {         fileinputstream inputstream = new fileinputstream("/home/me/dev/scratchpad/src/main/resources/files.zip");         unzipfile(inputstream);     }      private static void unzipfile(inputstream inputstream)             throws ioexception, parseexception {         try (ziparchiveinputstream zipinput =                      new ziparchiveinputstream(inputstream, null, false, true);) {              ziparchiveentry zipentry;              while ((zipentry = zipinput.getnextzipentry()) != null) {                 system.out.println("file: " + zipentry.getname());                  byte[] filebytes = readdatafromzipstream(zipinput, zipentry);                  bytearrayinputstream bytein = new bytearrayinputstream(filebytes);                 unzipgziparchiveandprint(bytein);             }         }     }      private static byte[] readdatafromzipstream(ziparchiveinputstream zipstream, ziparchiveentry entry) throws ioexception {         byte[] data = new byte[(int) entry.getsize()];         zipstream.read(data);          return data;     }      private static void unzipgziparchiveandprint(inputstream inputstream) throws ioexception {         system.out.println("content:");         try (gzipinputstream gzipinputstream = new gzipinputstream(inputstream);              bufferedreader reader = new bufferedreader(new inputstreamreader(gzipinputstream))) {              string line;             while ((line = reader.readline()) != null) {                 system.out.println(line);             }         }     } }