Update main class

Plugin.java

@@ -0,0 +1,446 @@
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import io.izzel.taboolib.PluginLoader;
+import org.bukkit.Bukkit;
+import org.bukkit.configuration.file.YamlConfiguration;
+import org.bukkit.plugin.java.JavaPlugin;
+import org.bukkit.util.NumberConversions;
+
+import java.io.*;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import java.lang.reflect.Method;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.UUID;
+import java.util.zip.ZipFile;
+
+/**
+ * @Author 坏黑
+ * @Since 2019-07-05 9:03
+ */
+public abstract class Plugin extends JavaPlugin {
+
+    /**
+     * 版本信息获取地址
+     * 优先采用国内地址
+     * 防止部分机器封禁海外访问
+     */
+    public static final String[][] URL = {
+            {
+                    "https://skymc.oss-cn-shanghai.aliyuncs.com/plugins/latest.json",
+                    "https://skymc.oss-cn-shanghai.aliyuncs.com/plugins/TabooLib.jar"
+            },
+            {
+                    "https://api.github.com/repos/Bkm016/TabooLib/releases/latest",
+                    "https://github.com/Bkm016/TabooLib/releases/latest/download/TabooLib.jar",
+            },
+    };
+
+    protected static Plugin plugin;
+    protected static File libFile = new File("TabooLib.jar");
+
+    /**
+     * 插件在初始化过程中出现错误
+     * 将在 onLoad 方法下关闭插件
+     */
+    protected static boolean initFailed;
+
+    static {
+        init();
+    }
+
+    @Override
+    public final void onLoad() {
+        if (initFailed) {
+            setEnabled(false);
+            return;
+        }
+        plugin = this;
+        PluginLoader.addPlugin(this);
+        PluginLoader.load(this);
+        try {
+            onLoading();
+        } catch (Throwable t) {
+            t.printStackTrace();
+        }
+    }
+
+    @Override
+    public final void onEnable() {
+        if (initFailed) {
+            return;
+        }
+        PluginLoader.start(this);
+        try {
+            onStarting();
+        } catch (Throwable t) {
+            t.printStackTrace();
+        }
+        Bukkit.getScheduler().runTask(this, () -> {
+            PluginLoader.active(this);
+            onActivated();
+        });
+    }
+
+    @Override
+    public final void onDisable() {
+        if (initFailed) {
+            return;
+        }
+        PluginLoader.stop(this);
+        try {
+            onStopping();
+        } catch (Throwable t) {
+            t.printStackTrace();
+        }
+    }
+
+    /**
+     * 代替 JavaPlugin 本身的 onLoad 方法
+     */
+    public void onLoading() {
+    }
+
+    /**
+     * 代替 JavaPlugin 本身的 onEnable 方法
+     */
+    public void onStarting() {
+    }
+
+    /**
+     * 代替 JavaPlugin 本身的 onDisable 方法
+     */
+    public void onStopping() {
+    }
+
+    /**
+     * 当服务端完全启动时执行该方法
+     * 完全启动指 "控制台可以输入命令且得到反馈时"
+     * <p>
+     * 使用 @TSchedule 同样可以代替该方法
+     */
+    public void onActivated() {
+    }
+
+    /**
+     * 检查 TabooLib 是否已经被载入
+     * 跳过 TabooLib 主类的初始化过程
+     */
+    public static boolean isLoaded() {
+        try {
+            return Class.forName("io.izzel.taboolib.TabooLib", false, Bukkit.class.getClassLoader()) != null;
+        } catch (Throwable ignored) {
+        }
+        return false;
+    }
+
+    /**
+     * 获取 TabooLib 当前运行版本
+     */
+    public static double getVersion() {
+        try {
+            ZipFile zipFile = new ZipFile(libFile);
+            return NumberConversions.toDouble(readFully(zipFile.getInputStream(zipFile.getEntry("version")), StandardCharsets.UTF_8));
+        } catch (Throwable t) {
+            t.printStackTrace();
+        }
+        return -1;
+    }
+
+    /**
+     * 获取 TabooLib 当前最新版本
+     * 获取内容为版本号+访问地址+下载地址
+     */
+    public static String[] getNewVersion() {
+        for (String[] url : URL) {
+            String read = readFromURL(url[0]);
+            if (read == null) {
+                continue;
+            }
+            try {
+                JsonObject jsonObject = (JsonObject) new JsonParser().parse(read);
+                if (jsonObject.has("tag_name")) {
+                    return new String[] {jsonObject.get("tag_name").getAsString(), url[0], url[1]};
+                }
+            } catch (Throwable t) {
+                t.printStackTrace();
+            }
+        }
+        return null;
+    }
+
+    /**
+     * 将文件读取至内存中
+     * 读取后不会随着插件的卸载而卸载
+     * 请在执行前判断是否已经被读取
+     * 防止出现未知错误
+     */
+    private static void addToPath(File file) {
+        try {
+            Method method = URLClassLoader.class.getDeclaredMethod("addURL", URL.class);
+            method.setAccessible(true);
+            method.invoke(Bukkit.class.getClassLoader(), file.toURI().toURL());
+        } catch (Throwable e) {
+            e.printStackTrace();
+        }
+    }
+
+    private static boolean downloadFile(String in, File file) {
+        try (InputStream inputStream = new URL(in).openStream(); BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream)) {
+            toFile(bufferedInputStream, file);
+            return true;
+        } catch (Throwable t) {
+            t.printStackTrace();
+        }
+        return false;
+    }
+
+    private static File toFile(String in, File file) {
+        try (FileWriter fileWriter = new FileWriter(file); BufferedWriter bufferedWriter = new BufferedWriter(fileWriter)) {
+            bufferedWriter.write(in);
+            bufferedWriter.flush();
+        } catch (Exception ignored) {
+        }
+        return file;
+    }
+
+    private static File toFile(InputStream inputStream, File file) {
+        try (FileOutputStream fos = new FileOutputStream(file); BufferedOutputStream bos = new BufferedOutputStream(fos)) {
+            byte[] buf = new byte[1024];
+            int len;
+            while ((len = inputStream.read(buf)) > 0) {
+                bos.write(buf, 0, len);
+            }
+            bos.flush();
+        } catch (Exception ignored) {
+        }
+        return file;
+    }
+
+    private static String readFromURL(String in, String def) {
+        return Optional.ofNullable(readFromURL(in)).orElse(def);
+    }
+
+    private static String readFromURL(String in) {
+        try (InputStream inputStream = new URL(in).openStream(); BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream)) {
+            return new String(readFully(bufferedInputStream));
+        } catch (Throwable t) {
+            t.printStackTrace();
+        }
+        return null;
+    }
+
+    private static String readFully(InputStream inputStream, Charset charset) throws IOException {
+        return new String(readFully(inputStream), charset);
+    }
+
+    private static byte[] readFully(InputStream inputStream) throws IOException {
+        ByteArrayOutputStream stream = new ByteArrayOutputStream();
+        byte[] buf = new byte[1024];
+        int len = 0;
+        while ((len = inputStream.read(buf)) > 0) {
+            stream.write(buf, 0, len);
+        }
+        return stream.toByteArray();
+    }
+
+    private static Class<?> getMainClass() {
+        File file = file(new File("plugins/TabooLib/temp/" + UUID.randomUUID()));
+        try {
+            ZipFile zipFile = new ZipFile(toFile(Plugin.class.getProtectionDomain().getCodeSource().getLocation().openStream(), file));
+            return Class.forName(YamlConfiguration.loadConfiguration(new InputStreamReader(zipFile.getInputStream(zipFile.getEntry("plugin.yml")))).getString("main"));
+        } catch (Throwable t) {
+            t.printStackTrace();
+        }
+        return null;
+    }
+
+    private static Class getCaller(Class<?> obj) {
+        try {
+            return Class.forName(Thread.currentThread().getStackTrace()[3].getClassName(), false, obj.getClassLoader());
+        } catch (ClassNotFoundException ignored) {
+        }
+        return null;
+    }
+
+    private static File file(File file) {
+        if (!file.exists()) {
+            folder(file);
+            try {
+                file.createNewFile();
+            } catch (Throwable t) {
+                t.printStackTrace();
+            }
+        }
+        return file;
+    }
+
+    private static File folder(File file) {
+        if (!file.exists()) {
+            String filePath = file.getPath();
+            int index = filePath.lastIndexOf(File.separator);
+            String folderPath;
+            File folder;
+            if ((index >= 0) && (!(folder = new File(filePath.substring(0, index))).exists())) {
+                folder.mkdirs();
+            }
+        }
+        return file;
+    }
+
+    private static void deepDelete(File file) {
+        if (!file.exists()) {
+            return;
+        }
+        if (file.isFile()) {
+            file.delete();
+            return;
+        }
+        for (File file1 : Objects.requireNonNull(file.listFiles())) {
+            deepDelete(file1);
+        }
+        file.delete();
+    }
+
+    private static void init() {
+        // 检查 TabooLib 文件是否存在
+        if (!libFile.exists()) {
+            // 本地资源检测
+            InputStream resourceAsStream = Plugin.class.getClassLoader().getResourceAsStream("TabooLib.jar");
+            if (resourceAsStream != null) {
+                // 写入文件
+                toFile(resourceAsStream, libFile);
+            }
+            // 在线资源下载
+            else if (!download()) {
+                return;
+            }
+        }
+        // 检查 TabooLib 运行版本是否正常
+        else {
+            double version = getVersion();
+            // 本地版本获取失败
+            if (version == -1) {
+                // 重新下载文件，如果下载失败则停止加载
+                if (!download()) {
+                    return;
+                }
+            }
+            Class<?> mainClass = getMainClass();
+            if (mainClass != null && mainClass.isAnnotationPresent(Version.class)) {
+                double requireVersion = mainClass.getAnnotation(Version.class).value();
+                // 依赖版本高于当前运行版本
+                if (requireVersion > version) {
+                    // 获取版本信息
+                    String[] newVersion = getNewVersion();
+                    if (newVersion == null) {
+                        close();
+                        return;
+                    }
+                    // 检查依赖版本是否合理
+                    // 如果插件使用不合理的版本则跳过下载防止死循环
+                    // 并跳过插件加载
+                    if (requireVersion > NumberConversions.toInt(newVersion[0])) {
+                        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c版本 §4" + requireVersion + " §c无法获取.");
+                        initFailed = true;
+                        return;
+                    }
+                    Bukkit.getConsoleSender().sendMessage("§f[TabooLib] §7正在重新下载资源文件.");
+                    if (downloadFile(newVersion[2], libFile)) {
+                        // 如果资源下载成功则重启服务器
+                        restart();
+                    }
+                    return;
+                }
+            }
+        }
+        // 检查 TabooLib 是否已经被加载
+        if (!isLoaded()) {
+            // 将 TabooLib 通过 Bukkit.class 类加载器加载至内存中供其他插件使用
+            // 并保证在热重载过程中不会被 Bukkit 卸载
+            addToPath(libFile);
+            // 初始化 TabooLib 主类
+            try {
+                Class.forName("io.izzel.taboolib.TabooLib");
+            } catch (Throwable t) {
+                t.printStackTrace();
+            }
+        }
+        // 清理临时文件
+        deepDelete(new File("plugins/TabooLib/temp"));
+    }
+
+    private static boolean download() {
+        Bukkit.getConsoleSender().sendMessage("§f[TabooLib] §7正在下载资源文件.");
+        String[] newVersion = getNewVersion();
+        if (newVersion == null || !downloadFile(newVersion[2], libFile)) {
+            close();
+            return false;
+        }
+        return true;
+    }
+
+    private static void close() {
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c");
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c#################### 错误 ####################");
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c");
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c  初始化 §4TabooLib §c失败!");
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c  无法获取版本信息或下载时出现错误.");
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c");
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c  请检查网络连接.");
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c  服务端将在 5 秒后继续启动.");
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c");
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c#################### 错误 ####################");
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c");
+        try {
+            Thread.sleep(5000L);
+        } catch (Throwable t) {
+            t.printStackTrace();
+        }
+        initFailed = true;
+    }
+
+    private static void restart() {
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c");
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c#################### 警告 ####################");
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c");
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c  初始化 §4TabooLib §c失败!");
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c  当前运行的版本低于插件所需版本.");
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c");
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c  已下载最新版.");
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c  服务端将在 5 秒后重新启动.");
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c");
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c#################### 警告 ####################");
+        Bukkit.getConsoleSender().sendMessage("§4[TabooLib] §c");
+        try {
+            Thread.sleep(5000L);
+        } catch (Throwable t) {
+            t.printStackTrace();
+        }
+        initFailed = true;
+        Bukkit.shutdown();
+    }
+
+    public static Plugin getPlugin() {
+        return plugin;
+    }
+
+    public static File getLibFile() {
+        return libFile;
+    }
+
+    @Target(ElementType.TYPE)
+    @Retention(RetentionPolicy.RUNTIME)
+    public @interface Version {
+
+        double value();
+
+    }
+}

src/main/scala/io/izzel/taboolib/util/Files.java

@@ -10,12 +10,12 @@ import org.yaml.snakeyaml.external.biz.base64Coder.Base64Coder;
 import java.io.*;
 import java.net.URISyntaxException;
 import java.net.URL;
-import java.net.URLConnection;
 import java.nio.channels.FileChannel;
 import java.nio.charset.Charset;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Objects;
+import java.util.Optional;
 import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.jar.JarFile;
 import java.util.zip.ZipEntry;
@@ -82,15 +82,17 @@ public class Files {
         }
     }
 
-    public static void toFile(String in, File file) {
+    public static File toFile(String in, File file) {
         try (FileWriter fileWriter = new FileWriter(file); BufferedWriter bufferedWriter = new BufferedWriter(fileWriter)) {
             bufferedWriter.write(in);
             bufferedWriter.flush();
-        } catch (Exception ignored) {
+        } catch (Throwable t) {
+            t.printStackTrace();
         }
+        return file;
     }
 
-    public static void toFile(InputStream inputStream, File file) {
+    public static File toFile(InputStream inputStream, File file) {
         try (FileOutputStream fos = new FileOutputStream(file); BufferedOutputStream bos = new BufferedOutputStream(fos)) {
             byte[] buf = new byte[1024];
             int len;
@@ -98,8 +100,10 @@ public class Files {
                 bos.write(buf, 0, len);
             }
             bos.flush();
-        } catch (Exception ignored) {
+        } catch (Throwable t) {
+            t.printStackTrace();
         }
+        return file;
     }
 
     public static File file(File path, String filePath) {
@@ -192,22 +196,14 @@ public class Files {
     }
 
     public static String readFromURL(String url, String def) {
-        String s = readFromURL(url, 1024);
+        return Optional.ofNullable(readFromURL(url)).orElse(def);
-        return s == null ? def : s;
     }
 
-    public static String readFromURL(String url, int size) {
+    public static String readFromURL(String url) {
-        URLConnection conn = null;
+        try (InputStream inputStream = new URL(url).openStream(); BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream)) {
-        BufferedInputStream bin = null;
+            return new String(IO.readFully(bufferedInputStream));
-        try {
+        } catch (Throwable t) {
-            conn = new URL(url).openConnection();
+            t.printStackTrace();
-            bin = new BufferedInputStream(conn.getInputStream());
-            return readFromStream(bin, size, conn.getContentEncoding() == null ? "UTF-8" : conn.getContentEncoding());
-        } catch (IOException e) {
-            e.printStackTrace();
-        } finally {
-            IO.close(conn);
-            IO.closeQuietly(bin);
         }
         return null;
     }