Cast from String to ItemMeta

I upload the ItemMeta to mysql
When I download the ItemMeta that was a String
Any way to Cast String to ItemMeta?
Please help me

Code:

package cc.leon.bukkit.WebShop;

import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.Map;
import java.util.Set;

import org.bukkit.ChatColor;
import org.bukkit.Material;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.enchantments.Enchantment;
import org.bukkit.entity.Player;
import org.bukkit.inventory.ItemFlag;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.PlayerInventory;
import org.bukkit.inventory.meta.ItemMeta;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.util.io.BukkitObjectInputStream;

import com.earth2me.essentials.Settings;
import com.earth2me.essentials.api.Economy;
import com.earth2me.essentials.api.UserDoesNotExistException;

public class main extends JavaPlugin{

    Connection conn = null;
   
    public void onEnable() {
        getLogger().info("The Webshop Plugin Is Enable");
    }
    public void onDisable() {
        getLogger().info("The Webshop Plugin Is Disable");
    }

    public boolean onCommand(CommandSender sender,Command cmd,String cmdlable,String[] args) {
       
        Player player = (Player) sender;
        String pname = player.getName();
       
        if(cmdlable.equals("webshop")) {
            PlayerInventory inventory = player.getInventory();
            if(args.length == 0) {
                player.sendMessage(ChatColor.AQUA + "玩家 " + pname + " 您好 請參閱網路商城插件教學  !  !");
               
            }else if(args.length > 0 && args.length == 3 && args[0].equalsIgnoreCase("sell")){
                   
                String itemprice = args[1], title = args[2];//宣告變數物品價錢, 商品標題
                player.sendMessage(ChatColor.AQUA + "正在將您的商品上傳到網路商城...");
                ItemStack item = inventory.getItemInMainHand();//宣告item為玩家手上物品
                Material itemtype = item.getType();//宣告itemtype 為物品類別
                ItemMeta itemmeta = item.getItemMeta();//宣告itemmeta 為物品資訊
                int amount = item.getAmount();//宣告amount 為物品數量
                String sqlmessage = uploadsql(pname, title, itemtype, itemmeta, amount, itemprice);//上傳物品至資料庫
               
                if(sqlmessage == "ok") {
                    player.sendMessage(ChatColor.GREEN + "已經成功將您的商品上傳 ! !");
                }else {   
                    player.sendMessage(ChatColor.RED + "資料庫錯誤請聯繫管理員 ! !");
                }
               
            }else if(args.length > 0 && args.length == 3 && args[0].equalsIgnoreCase("buy")){
                String itemid = args[1];
                String[] sqlmessage = downloadsql(itemid);
                Material itemtype = Material.getMaterial(sqlmessage[2]);
                int itemamount = Integer.parseInt(sqlmessage[4]);
                ItemStack item = new ItemStack(itemtype, itemamount);
                ItemMeta itemmeta = item.getItemMeta();
               
                itemmeta.setDisplayName(sqlmessage[2]);
                item.setItemMeta(itemmeta);
                inventory.addItem(item);
                player.sendMessage(sqlmessage[0] + sqlmessage[1] + sqlmessage[2] + sqlmessage[3] + sqlmessage[4] + sqlmessage[5]);
               
            }else if(args.length > 0 && args.length == 1 && args[0].equalsIgnoreCase("test")){
                ItemStack item = inventory.getItemInMainHand();
                ItemMeta itemmeta = item.getItemMeta();
                String stackstring = item.toString();
                player.sendMessage("" + item);
            }else {
                player.sendMessage(ChatColor.RED + "【WebShop】指令使用錯誤 請使用/webshop參閱指令教學! !");   
            }
           
    }
       
        return false;
    }
   
    public double getBalance(String pname) {
        try {
            return Economy.getMoneyExact(pname).doubleValue();
        } catch (UserDoesNotExistException | NullPointerException e) {
            return 0;
        }
    }
   
    public String uploadsql(String player, String title, Material itemtype, ItemMeta itemmeta, int amount, String price) {
       
        try {
            Class.forName("com.mysql.jdbc.Driver");
            String datasource = "jdbc:mysql://localhost/minecraft_database?user=minecraft&password=TmXBYLUCd0PHiEWH&useSSL=false";
            conn = DriverManager.getConnection(datasource);
            Statement st = conn.createStatement();
            st.execute("INSERT INTO `webshop`(`player`, `title`, `type`, `meta`, `amount`, `price`) VALUES ('" + player + "', '"+ title +"' ,'" + itemtype + "' ,'" + itemmeta +"' ,'" + amount +"' , '" + price + "');");
        }catch(Exception e)
        {
            return e.getMessage();
        }
       
        return "ok";
    }
   
    public String[] downloadsql(String itemid) {
       
        try {
            Class.forName("com.mysql.jdbc.Driver");
            String datasource = "jdbc:mysql://localhost/minecraft_database?user=minecraft&password=TmXBYLUCd0PHiEWH&useSSL=false";
            conn = DriverManager.getConnection(datasource);
            Statement st = conn.createStatement();
            st.execute("SELECT * FROM `webshop` WHERE `id` = " + Integer.parseInt(itemid) + ";");
            ResultSet rs = st.getResultSet();
            String[] arr = new String[6];
            while(rs.next()) {
            arr[0] = rs.getString("player");
            arr[1] = rs.getString("title");
            arr[2] = rs.getString("type");
            arr[3] = rs.getString("meta");
            arr[4] = rs.getString("amount");
            arr[5] = rs.getString("price");
            }
            return arr;
        }catch(Exception e)
        {
            String[] arr = new String[1];
            arr[0] = "notgood";
            return arr;
        }
    }
   
}

 

So I need to do like

Code:

itemmeta.getDisplayName();
                itemmeta.getEnchants();

 

Code:

ItemStack item = inventory.getItemInMainHand();
                List<ItemStack> items = new ArrayList<ItemStack>();
                items.add(item);
                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                try {
                    BukkitObjectOutputStream boos = new BukkitObjectOutputStream(baos);
                    boos.writeObject(items);
                    boos.close();
                } catch (IOException ioexception) {
                    ioexception.printStackTrace();
                }
             
             
                ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
                Object backFromTheDead = null;
                try {
                    BukkitObjectInputStream bois = new BukkitObjectInputStream(bais);
                    backFromTheDead = bois.readObject();
                    bois.close();
                } catch (IOException ioexception) {
                    ioexception.printStackTrace();
                } catch (ClassNotFoundException classNotFoundException) {
                    classNotFoundException.printStackTrace();
                }
                List<ItemStack> returnedItemList = (List<ItemStack>) backFromTheDead;
                player.sendMessage("" + returnedItemList);

I need to send the boos to sql
and download it with returnedItemList and insert to item?

 

Oh god I solved the problem
Thank you verymuch