From a76bc118092824139749c2fd2e937d63fbad6303 Mon Sep 17 00:00:00 2001
From: lht <viego2002@163.com>
Date: Tue, 3 Jun 2025 14:40:03 +0800
Subject: [PATCH] finish

---
 .../java/club/shengsheng/MyClassLoader.java   | 38 +++++++++++++++++++
 .../classloader/MyClassLoaderTest.java        |  2 +-
 2 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/src/main/java/club/shengsheng/MyClassLoader.java b/src/main/java/club/shengsheng/MyClassLoader.java
index 21026cf..da107fd 100644
--- a/src/main/java/club/shengsheng/MyClassLoader.java
+++ b/src/main/java/club/shengsheng/MyClassLoader.java
@@ -1,9 +1,47 @@
 package club.shengsheng;
 
 
+import com.sun.source.tree.SynchronizedTree;
+
+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")){
+                    c = findClass(name);
+                }else{
+                    c = getParent().loadClass(name);
+                }
+            }
+            if(resolve){
+                resolveClass(c);
+            }
+            return c;
+        }
+    }
+
+    @Override
+    protected Class<?> findClass(String name) throws ClassNotFoundException {
+        String replace = "加密.class";
+        File classFile = new File(replace);
+        try {
+            byte[] bytes = Files.readAllBytes(classFile.toPath());
+            for(int i = 0; i < bytes.length; i ++){
+                bytes[i] = (byte)(bytes[i] - 1);
+            }
+            return defineClass(name, bytes, 0, bytes.length);
+        } catch (Exception e) {
+            throw new ClassNotFoundException(name);
+        }
+    }
 }
diff --git a/src/test/java/club/shengsheng/classloader/MyClassLoaderTest.java b/src/test/java/club/shengsheng/classloader/MyClassLoaderTest.java
index be8f92a..bcaf173 100644
--- a/src/test/java/club/shengsheng/classloader/MyClassLoaderTest.java
+++ b/src/test/java/club/shengsheng/classloader/MyClassLoaderTest.java
@@ -14,7 +14,7 @@ class MyClassLoaderTest {
 
     @Test
     void testLoadShengSheng() throws Exception {
-        Class<?> shengshengClass = new MyClassLoader().loadClass("tech.insight.ShengSheng");
+        Class<?> shengshengClass = new MyClassLoader().loadClass("tech.insight.ShengSheng", false);
         Constructor<?> constructor = shengshengClass.getConstructor();
         Object shengsheng = constructor.newInstance();
         Method declaredMethod = shengshengClass.getDeclaredMethod("say");