允许使用[1-41]标签来展示玩家背包内指定标号的格子内的物品

src/main/java/ling/coordinateRecorder/Listener/ChatEnhancement.java

@@ -10,29 +10,94 @@ import org.bukkit.event.Listener;
 import org.bukkit.event.player.AsyncPlayerChatEvent;
 import org.bukkit.inventory.ItemStack;
 
+import java.util.HashMap;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
 ///     增强聊天信息
 public class ChatEnhancement implements Listener {
+    private static final Pattern pattern = Pattern.compile("\\[item\\]|\\[(\\d{1,2})\\]");
+    
+    protected static BaseComponent getComponent(HashMap<Integer, BaseComponent> map, Player player, int n) {
+        if (map.containsKey(n)) {
+            return map.get(n);
+        }
+        if (n < 0 || n > 41) {
+            return null;
+        }
+        if (n == 0) {
+            ItemStack mainHandItem = player.getInventory().getItemInMainHand();
+            if (mainHandItem.getType() == Material.AIR)
+                return null;
+            map.put(0, CoordinateRecorder.getItemShowService().addItem(mainHandItem));
+            return map.get(0);
+        }
+        ItemStack item = player.getInventory().getItem(n - 1);
+        if (item == null || item.getType() == Material.AIR)
+            return null;
+        map.put(n, CoordinateRecorder.getItemShowService().addItem(item));
+        return map.get(n);
+    }
+    
     @EventHandler
     public void onPlayerChat(AsyncPlayerChatEvent event) {
         Player player = event.getPlayer();
         String message = event.getMessage();
-        if (!message.contains("[item]"))
-            return;
         
         ItemStack mainHandItem = player.getInventory().getItemInMainHand();
         if (mainHandItem.getType() == Material.AIR)
             return;
         
-        BaseComponent item = CoordinateRecorder.getItemShowService().addItem(mainHandItem);
+        //BaseComponent item = CoordinateRecorder.getItemShowService().addItem(mainHandItem);
         
-        String[] parts = message.split("\\[item\\]", -1);
+        HashMap<Integer, BaseComponent> hashMap = new HashMap<>();
+        
+        //  输出消息
         TextComponent finalMessage = new TextComponent("<" + player.getName() + "> ");
+        
+        Matcher matcher = pattern.matcher(message);
+        // 记录上一个匹配项的结束位置
+        int lastMatchEnd = 0;
+        while (matcher.find()) {
+            // 获取当前匹配项之前的子串（上一个匹配项之后到当前匹配项之前的部分）
+            String substringBeforeCurrentTag = message.substring(lastMatchEnd, matcher.start());
+            lastMatchEnd = matcher.end();
+            finalMessage.addExtra(substringBeforeCurrentTag);
+            //主手
+            if (matcher.group(0).equals("[item]")) {
+                BaseComponent component = getComponent(hashMap, player, 0);
+                if (component != null)
+                    finalMessage.addExtra(component);
+                else
+                    finalMessage.addExtra(matcher.group(0));
+            } else {
+                //指定格子
+                try {
+                    int index = Integer.parseInt(matcher.group(1));
+                    BaseComponent component = getComponent(hashMap, player, index);
+                    if (component != null)
+                        finalMessage.addExtra(component);
+                    else
+                        finalMessage.addExtra(matcher.group(0));
+                } catch (NumberFormatException e) {
+                    finalMessage.addExtra(matcher.group(0));
+                }
+            }
+        }
+        
+        if (lastMatchEnd < message.length()) {
+            String remainingText = message.substring(lastMatchEnd);
+            finalMessage.addExtra(remainingText);
+        }
+        
+        /*
+        String[] parts = message.split("\\[item\\]", -1);
         for (int i = 0; i < parts.length; i++) {
             finalMessage.addExtra(new TextComponent(parts[i]));
             if (i < parts.length - 1) {
                 finalMessage.addExtra(item);
             }
-        }
+        }*/
         
         for (Player recipient : event.getRecipients()) {
             recipient.spigot().sendMessage(finalMessage);

src/main/java/ling/coordinateRecorder/Service/ItemShowService.java

@@ -46,6 +46,7 @@ public class ItemShowService implements Service {
         lockFlag.set(false);
     }
     
+    @SuppressWarnings("ExtractMethodRecommender")
     public BaseComponent addItem(ItemStack item) {
         assert item.getItemMeta() != null;
         lock();
@@ -59,6 +60,9 @@ public class ItemShowService implements Service {
         }
         BaseComponent message = new TextComponent("[");
         message.addExtra(itemName);
+        if (item.getAmount() > 1) {
+            message.addExtra("*" + item.getAmount());
+        }
         message.addExtra("]");
         message.setColor(ChatColor.YELLOW);
         message.setHoverEvent(new HoverEvent(HoverEvent.Action.SHOW_TEXT, new Text("点击查看物品详情")));