Writing bukkit objects to file using ObjectOutputStream

I'm working on a plugin were i need to write a inventory object to a file but i think bukkit has a problem with there objects so you can't write them directly to files using ObjectOutputStream

Code to write it to the file:

Code:

public void saveObject(Object obj, String file) {
 
        try {
            FileOutputStream fileOutput = new FileOutputStream(file);
            ObjectOutputStream objectOutput = new ObjectOutputStream(fileOutput);
            objectOutput.writeObject(obj);
            objectOutput.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

I really hope some of you can help me

 

No one can help you on a hypothetic problem. What is exactly the error or unexpected behaviour you get when executing this code ?

 

Megalegomand
You can only save objects to a file if they implement Serializable (Same goes for fields inside the object your saving). I don't think any of the bukkit objects do.

You will have to save the data in your own object, and then write it to a file. And convert it back to a normal inventory after reading.

 

You could take a look on my ItemParser class.

Example:

Code:

// save inventory
YamlConfiguration yaml = new YamlConfiguration();
yaml.set("inventory", ItemParser.getHashMapFromItemStackArray(player.getInventory().getContents()));
yaml.set("armor", ItemParser.getHashMapFromItemStackArray(player.getInventory().getArmorContents()));
 
// load inventory
YamlConfiguration yaml = new YamlConfiguration();
ItemStack[] inventory = ItemParser.getItemStackArrayFromHashMap(yaml.getConfigurationSection("inventory"), 36);
ItemStack[] armor = ItemParser.getItemStackArrayFromHashMap(yaml.getConfigurationSection("armor"), 4);
player.getInventory().setContents(inventory);
player.getInventory().setArmorContents(armor);

You can then save the yaml into a file, I would save inventory into a own file and compress it over GZIPOutputStream, because the file can be big and if you compress it, they will be then very small.
How to compress a file and loading it, google it.

If you have any questions ask.