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用户:Laxcat

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个人信息

  • 一个业余的插件作者 废柴
  • 能够编写插件
  • 但是对于Java的了解不够深入
  1. MCBBS ID： q513902026
  2. Github ID: HopeAsd(q513902026)
  3. Github: 我的GitHub页面

代码预留地

搜索你插件中所有特定包开头的class文件

InjectFinder 

@NotSinglethon
public class InjectFinder {
    private static JarFile jarfile;
    public static <T extends JavaPlugin> Collection<Class<?>> getClasses(T plugin, String rootPackage, boolean recursive)  {
        Set<Class<?>> classes = Sets.newHashSet();
        String packDirName = rootPackage.replace('.', '/');
        Enumeration<URL> dirs;
        try{
            dirs = plugin.getClass().getClassLoader().getResources(packDirName);
            while(dirs.hasMoreElements()){
                URL url = dirs.nextElement();
                String protocol = url.getProtocol();
                switch(protocol){
                    case "file":
                        String filePath = URLDecoder.decode(url.getFile(),"UTF-8");
                        classes.addAll(findClassesByFile(rootPackage,filePath,recursive));
                        break;
                    case "jar":
                        JarURLConnection conn = (JarURLConnection) url.openConnection();
                        JarFile jar = conn.getJarFile();
                        if (jar == null){
                            jar = jarfile;
                        }else{
                            jarfile = jar;
                        }
                        classes.addAll(findClassesByJar(rootPackage,jar,recursive));
                        break;
                }
            }
        }catch(IOException e){

        }
        return classes;
    }
    private static Collection<Class<?>> findClassesByJar(String rootPackage,JarFile jarFile,boolean recursive){
        Set<Class<?>> classes = Sets.newHashSet();
        Enumeration<JarEntry> jarEntryEnumeration = jarFile.entries();
        String packDirName = rootPackage.replace('.', '/');
        while(jarEntryEnumeration.hasMoreElements()){
            JarEntry jarEntry = jarEntryEnumeration.nextElement();
            String name = jarEntry.getName();
            if('/' == name.charAt(0)){
                name = name.substring(1);
            }
            if(name.startsWith(packDirName)){
                int index = name.lastIndexOf('/');
                if(index != -1 ){
                    rootPackage = name.substring(0,index).replace('/','.');
                }
                if((index != -1) || recursive){
                    if(name.endsWith(".class") && !(jarEntry.isDirectory())){
                        String className = name.substring(rootPackage.length()+1,name.length()-6);
                        try {
                            Class clazz = getClass(rootPackage,className);
                            if (clazz != null){
                                classes.add(clazz);
                            }
                        } catch (ClassNotFoundException e) {
                            e.printStackTrace();
                        }
                    }
                }
            }
        }
        return classes;
    }
    private static Collection<Class<?>> findClassesByFile(String rootPackage,String filePath,boolean recursive){
        Set<Class<?>> classes = Sets.newHashSet();
        findAndAddClasses(rootPackage,filePath,recursive,classes);
        return classes;
    }
    private static void findAndAddClasses(String rootPackage,String filePath,boolean recursive,Collection<Class<?>> classes){
        File dir = new File(rootPackage);
        if(!dir.exists() || !dir.isDirectory()){
            return;
        }
        File[] dirFiles = dir.listFiles(pathname -> (recursive && pathname.isDirectory()) || (pathname.getName().endsWith(".class")));
        for(File file:dirFiles){
            if(file.isDirectory()){
                findAndAddClasses(rootPackage+"."+file.getName(),file.getAbsolutePath(),recursive,classes);
            }else{
                String className =file.getName().substring(0,file.getName().length()-6);
                try{
                    Class clazz = getClass(rootPackage,className);
                    if (clazz != null){
                        classes.add(clazz);
                    }
                } catch (ClassNotFoundException e) {
                    e.printStackTrace();
                }
            }
        }
    }
    private static Class<?> getClass(String rootPackage,String className) throws ClassNotFoundException {
        Class clazz = Class.forName(rootPackage + '.' + className);
        return clazz.isAnnotationPresent(NotSinglethon.class) ? null:clazz;
    }
}

使用方法 

 
Set<Class<?>> classes = InjectFinder.getClasses(pluginInstance,"packageName",isRecursive)
<source>
pluginInstance 需要你自己插件的实例 
packageName 指搜索的指定包的文件
isRecursive 指是否循环
<source>

=== 继承此类自动在实例化时注册监听器 ===
BaseListener.java
<source lang="java">package io.bilicraft.r6.bbs.listener;

import java.util.logging.Logger;

import org.bukkit.event.Listener;

import io.bilicraft.r6.bbs.BiliBS;

/**
 * 父类 继承后请设定为无参构造
 * 
 * @author HopeAsd
 *
 */
public class BaseListener implements Listener {
    private String name;
    private final String version;
    private Logger logger = BiliBS.getInstance().getLogger();
    private boolean debug = false;

    /**
     * 请务必保证构造为无参构造 否则会注册失败
     * 
     * @param name
     *            监听器的名字
     * @param version
     *            监听器的版本
     */
    public BaseListener(String name, final String version) {
	this.name = name;
	this.version = version;
	BiliBS.addListener(name, this);
    }

    /**
     * 调用此方法可以往服务端发送信息 自动标示监听器名字
     * 
     * @param strings
     */
    protected void sendConsoleMessage(String... strings) {
	StringBuilder sBuilder = new StringBuilder();
	for (String s : strings) {
	    sBuilder.append(s + "\n");
	}
	logger.info("[" + name + "]:" + sBuilder.toString());
    }

    /**
     * 获取监听器版本
     * 
     * @return 监听器的版本
     */
    public final String getVersion() {
	return version;
    }

    /**
     * 是否为debug输出模式
     * 
     * @return 是否为debug输出模式
     */
    public boolean isDebug() {
	return debug;
    }

    /**
     * 更改debug输出模式
     */
    public void setDebug() {
	debug = !debug;
    }

    /**
     * 使用此方法用于注册监听器和反注册监听器
     * 
     * @return 监听器名字
     */
    public String getName() {
	return this.name;
    }
}

Example BaseListener

package io.bilicraft.r6.bbs.listener;

import org.bukkit.Chunk;
import org.bukkit.entity.Entity;
import org.bukkit.entity.Zombie;
import org.bukkit.event.EventHandler;
import org.bukkit.event.world.ChunkUnloadEvent;
/**
 * 管理实体的监听器
 * @author HopeAsd
 *
 */
public class EntityListener extends BaseListener {
    private static boolean debug = false;
    public EntityListener() {
	super("EntityListener","v0.1.0");
    }
    @EventHandler
    public void onChunkUnloadEvent(ChunkUnloadEvent event) {
	Chunk chunk = event.getChunk();
	for (Entity entity : chunk.getEntities()) {
	    if (isClearEntity(entity)) {
		if (debug) {
		    sendConsoleMessage("Entity: " + entity.getType() + "Location:{x:" + (int) entity.getLocation().getX()
			    + ",y:" + (int) entity.getLocation().getY() + ",z:" + (int) entity.getLocation().getZ()
			    + "}");
		    ;
		}
		entity.remove();
	    }
	}
    }
    public static boolean isClearEntity(Entity entity) {
	    switch (entity.getType()) {

	    case ZOMBIE:
		if (((Zombie) entity).isVillager()) {
		    return false;
		}
	    case CREEPER:
	    case SKELETON:
	    case SPIDER:
	    case CAVE_SPIDER:
	    case SQUID:
	    case PIG_ZOMBIE:
		return true;
	    default:
		break;
	    }
	
	return false;
    }
}

对所有继承BaseListener的实例进行操作

BiliBS.java 

package io.bilicraft.r6.bbs;

import java.util.HashMap;

import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.event.HandlerList;
import org.bukkit.event.Listener;
import org.bukkit.plugin.java.JavaPlugin;
import io.bilicraft.r6.bbs.listener.BaseListener;

public class BiliBS extends JavaPlugin implements Listener {
    private static BiliBS instance;
    private static HashMap<String, BaseListener> enableListenerList = new HashMap<String, BaseListener>();
    private static HashMap<String, BaseListener> disableListenerList = new HashMap<String, BaseListener>();

    @Override
    public void onEnable() {
	instance = this;
	try {
	    ListenerFactory.main(null);
	} catch (Exception e) {
	    getLogger().info("加载监听类错误" + e.getClass().getName());
	}
	;
	getServer().getPluginManager().registerEvents(this, this);
	// System.out.println("["+BiliBS.class.getName()+"]:
	// "+getServer().getBukkitVersion());
	registerListeners();
	registerCommands();
    }

    @Override
    public void onDisable() {
	instance = null;
    }

    public static BiliBS getInstance() {
	return instance;
    }
    
    private void registerCommands() {
	getCommand("bilibs").setExecutor(new BilibsCommand());
    }

    private void registerListeners() {
	for (BaseListener listener : enableListenerList.values()) {
	    getServer().getPluginManager().registerEvents(listener, instance);
	    getLogger().info("Listener:" + listener.getName() + "<" + listener.getVersion() + ">" + "注册完成 ,debug:"
		    + listener.isDebug());
	}
    }

    public static void registerListener(BaseListener baseListener) throws Exception {
	if (disableListenerList.containsKey(baseListener.getName())) {
	    disableListenerList.remove(baseListener.getName(), baseListener);

	    BaseListener listener = baseListener.getClass().newInstance();
	    BiliBS.getInstance().getServer().getPluginManager().registerEvents(listener, instance);
	    BiliBS.getInstance().getLogger().info("Listener:" + listener.getName() + "<" + listener.getVersion() + ">" + "注册完成 ,debug:"
		    + listener.isDebug());
	}
    }

    public static void addListener(String name, BaseListener baseListener) {
	enableListenerList.put(name, baseListener);
    }

    public static void removeListener(BaseListener baseListener) {
	if (enableListenerList.containsKey(baseListener.getName())) {
	    enableListenerList.remove(baseListener.getName(),baseListener);
	    disableListenerList.put(baseListener.getName(), baseListener);
	    HandlerList.unregisterAll(baseListener);
	}

    }

    public static StringBuilder getListenerList() {
	StringBuilder sBuilder = new StringBuilder(ChatColor.GREEN + "[BiliBS]: \nListenerList:");
	sBuilder.append("[");
	for (String listenerName : enableListenerList.keySet()) {
	    sBuilder.append(ChatColor.GREEN + listenerName + "<"+enableListenerList.get(listenerName).isDebug()+">,");
	}
	for (String listenerName : disableListenerList.keySet()) {
	    sBuilder.append(ChatColor.RED + listenerName + "<"+disableListenerList.get(listenerName).isDebug()+">,");
	}
	sBuilder.append("]");
	return sBuilder;
    }
    public static BaseListener getEnableListener(String key)
    {
	return enableListenerList.get(key);
    }
    public static BaseListener getDisableListener(String key)
    {
	return disableListenerList.get(key);
    }
    @Override
    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
	
	return super.onCommand(sender, command, label, args);

    }

}
取自“https://mineplugin.org/index.php?title=用户:Laxcat&oldid=14674”