From 076236f6805d9f4f9cf302d596fb17798588820f Mon Sep 17 00:00:00 2001
From: xiatian <openhello@foxmail.com>
Date: Thu, 19 Jun 2025 00:00:40 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E5=AE=9E=E7=8E=B0=E8=87=AA=E5=AE=9A?=
 =?UTF-8?q?=E4=B9=89=E7=B1=BB=E5=8A=A0=E8=BD=BD=E5=99=A8?=
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- 重写 loadClass 和 findClass 方法
- 添加解密字节码的功能
-支持加载特定包名的类
- 处理类加载锁和父类加载器的逻辑
---
 .../java/club/shengsheng/MyClassLoader.java   | 48 +++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/src/main/java/club/shengsheng/MyClassLoader.java b/src/main/java/club/shengsheng/MyClassLoader.java
index 21026cf..8851d40 100644
--- a/src/main/java/club/shengsheng/MyClassLoader.java
+++ b/src/main/java/club/shengsheng/MyClassLoader.java
@@ -1,9 +1,57 @@
 package club.shengsheng;
 
 
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+
 /**
  * @author gongxuanzhangmelt@gmail.com
  **/
 public class MyClassLoader extends ClassLoader {
 
+    @Override
+    public Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException {
+        synchronized (getClassLoadingLock(name)) {
+            Class<?> c = findLoadedClass(name);
+            if (c == null) {
+                if (name.startsWith("tech.insight")) {
+                    c = findClass(name);
+                } else {
+                    c = this.getParent().loadClass(name);
+                }
+            }
+            if (resolve) {
+                resolveClass(c);
+            }
+            return c;
+        }
+    }
+
+    @Override
+    protected Class<?> findClass(String name) throws ClassNotFoundException {
+        boolean isWindows = System.getProperty("os.name").toLowerCase().startsWith("win");
+        String relativePath;
+        if (name.equals("tech.insight.ShengSheng")) {
+            relativePath = "加密.class";
+        } else {
+            relativePath = name.replaceAll("\\.", isWindows ? "\\".concat(File.separator) : File.separator).concat(".class");
+        }
+        File classFile = new File(relativePath);
+        byte[] bytes;
+        try {
+            bytes = decodeBytes(Files.readAllBytes(classFile.toPath()));
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        return defineClass(name, bytes, 0, bytes.length);
+    }
+
+    private byte[] decodeBytes(byte[] bytes) {
+        byte[] decodedBytes = new byte[bytes.length];
+        for (int i = 0; i < bytes.length; i++) {
+            decodedBytes[i] = (byte) (bytes[i] - 1);
+        }
+        return decodedBytes;
+    }
 }