Solved Zip Exception: Not in GZIP Format

So I was following this: https://forums.bukkit.org/threads/pasting-loading-schematics.87129/ so I can load schematics, and I'm getting this error

Code:

[19:52:02 WARN]: java.util.zip.ZipException: Not in GZIP format
[19:52:02 WARN]:        at java.util.zip.GZIPInputStream.readHeader(Unknown Sour
ce)
[19:52:02 WARN]:        at java.util.zip.GZIPInputStream.<init>(Unknown Source)
[19:52:02 WARN]:        at java.util.zip.GZIPInputStream.<init>(Unknown Source)
[19:52:02 WARN]:        at org.jnbt.NBTInputStream.<init>(NBTInputStream.java:71
)
[19:52:02 WARN]:        at me.mrkirby153.plugins.simplegames.lobby.Lobbies.loadS
chematic(Lobbies.java:53)
[19:52:02 WARN]:        at me.mrkirby153.plugins.simplegames.game.Game.<init>(Ga
me.java:13)
[19:52:02 WARN]:        at me.mrkirby153.plugins.simplegames.SimpleGames.onEnabl
e(SimpleGames.java:50)
[19:52:02 WARN]:        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlug
in.java:218)
[19:52:02 WARN]:        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(
JavaPluginLoader.java:457)
[19:52:02 WARN]:        at org.bukkit.plugin.SimplePluginManager.enablePlugin(Si
mplePluginManager.java:384)
[19:52:02 WARN]:        at org.bukkit.craftbukkit.v1_7_R1.CraftServer.loadPlugin
(CraftServer.java:298)
[19:52:02 WARN]:        at org.bukkit.craftbukkit.v1_7_R1.CraftServer.enablePlug
ins(CraftServer.java:280)
[19:52:02 WARN]:        at org.bukkit.craftbukkit.v1_7_R1.CraftServer.reload(Cra
ftServer.java:630)
[19:52:02 WARN]:        at org.bukkit.Bukkit.reload(Bukkit.java:279)
[19:52:02 WARN]:        at org.bukkit.command.defaults.ReloadCommand.execute(Rel
oadCommand.java:23)
[19:52:02 WARN]:        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCo
mmandMap.java:196)
[19:52:02 WARN]:        at org.bukkit.craftbukkit.v1_7_R1.CraftServer.dispatchCo
mmand(CraftServer.java:542)
[19:52:02 WARN]:        at org.bukkit.craftbukkit.v1_7_R1.CraftServer.dispatchSe
rverCommand(CraftServer.java:529)
[19:52:02 WARN]:        at net.minecraft.server.v1_7_R1.DedicatedServer.aw(Dedic
atedServer.java:286)
[19:52:02 WARN]:        at net.minecraft.server.v1_7_R1.DedicatedServer.u(Dedica
tedServer.java:251)
[19:52:02 WARN]:        at net.minecraft.server.v1_7_R1.MinecraftServer.t(Minecr
aftServer.java:545)
[19:52:02 WARN]:        at net.minecraft.server.v1_7_R1.MinecraftServer.run(Mine
craftServer.java:457)
[19:52:02 WARN]:        at net.minecraft.server.v1_7_R1.ThreadServerApplication.
run(SourceFile:617)

This happens when I'm trying to load a schematic created by mcedit.

Code:java

    public static Schematic loadSchematic(File file) throws IOException
    {
        FileInputStream stream = new FileInputStream(file);
        NBTInputStream nbtStream = new NBTInputStream(new GZIPInputStream(stream));
 
        CompoundTag schematicTag = (CompoundTag) nbtStream.readTag();
        if (!schematicTag.getName().equals("Schematic")) {
            throw new IllegalArgumentException("Tag \"Schematic\" does not exist or is not first");
        }
 
        Map<String, Tag> schematic = schematicTag.getValue();
        if (!schematic.containsKey("Blocks")) {
            throw new IllegalArgumentException("Schematic file is missing a \"Blocks\" tag");
        }
 
        short width = getChildTag(schematic, "Width", ShortTag.class).getValue();
        short length = getChildTag(schematic, "Length", ShortTag.class).getValue();
        short height = getChildTag(schematic, "Height", ShortTag.class).getValue();
 
        String materials = getChildTag(schematic, "Materials", StringTag.class).getValue();
        if (!materials.equals("Alpha")) {
            throw new IllegalArgumentException("Schematic file is not an Alpha schematic");
        }
 
        byte[] blocks = getChildTag(schematic, "Blocks", ByteArrayTag.class).getValue();
        byte[] blockData = getChildTag(schematic, "Data", ByteArrayTag.class).getValue();
        return new Schematic(blocks, blockData, width, length, height);
    }
 
    private static <T extends Tag> T getChildTag(Map<String, Tag> items, String key, Class<T> expected) throws IllegalArgumentException
    {
        if (!items.containsKey(key)) {
            throw new IllegalArgumentException("Schematic file is missing a \"" + key + "\" tag");
        }
        Tag tag = items.get(key);
        if (!expected.isInstance(tag)) {
            throw new IllegalArgumentException(key + " tag is not of tag type " + expected.getName());
        }
        return expected.cast(tag);
    }
 
    public static void pasteLobby(World world, Location loc, Schematic schematic)
    {
        byte[] blocks = schematic.getBlocks();
        byte[] blockData = schematic.getData();
 
        short length = schematic.getLenght();
        short width = schematic.getWidth();
        short height = schematic.getHeight();
 
        for (int x = 0; x < width; ++x) {
            for (int y = 0; y < height; ++y) {
                for (int z = 0; z < length; ++z) {
                    int index = y * width * length + z * width + x;
                    Block block = new Location(world, x + loc.getX(), y + loc.getY(), z + loc.getZ()).getBlock();
                    block.setTypeIdAndData(blocks[index], blockData[index], true);
                }
            }
        }
    }
 

Part of Lobbies.java ^^^

 

Hey!

Here: http://forums.bukkit.org/threads/troubleshooting-common-problems-with-solution.44590/

It comes up with this:

Your world may be corrupt. Try removing all plugins and mod first. If you still get this error, try running your worlds through MCEdit. If that fails, restore from backups.
Here is a tutorial for fixing worlds, give it a try.

 

MrGermanrain

That's not it. It goes away if I don't call loadSchematic(); second of all, that link was for general bukkit help. Not plugin development

 

mrkirby153
Show method call. Most likely your file is not a valid compression.

 

xTrollxDudex

I'm not at my computer right now but the way I'm calling it is something along Lobbies.loadSchematic(new File(plugin.getDataFolder()+File.seperator+"lobbies"+File.seperator+name+".schematic")); and the schematic file is a file exported from MCEDIT

 

mrkirby153
I can't read binary files, but I'm pretty sure that your FILE.schematic is not a compressed file encoding, or does not have a zipped magic header on the file... Refer to GZipInputStream src, it throws the exception after checking the header.

 

xTrollxDudex

Okay, now do you know of any tutorials that can allow me to successfully paste schematics?

 

mrkirby153
Don't wrap InputStream with GZip, just use it raw

 

xTrollxDudex

That worked