commit (#40)

merge

Author: wunaixukong

src/main/java/club/shengsheng/MyClassLoader.java

@@ -1,9 +1,47 @@
 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) throws ClassNotFoundException {
+        Class<?> c = findLoadedClass(name);
+        if (c == null) {
+            if (name.startsWith("tech.insight.")) {
+                c = findClass(name);
+            }else {
+                c = loadClass(name,false);
+            }
+        }
+        return c;
+    }
+
+    @Override
+    protected Class<?> findClass(String name) throws ClassNotFoundException {
+        // tech.insight.ShengSheng
+        String path = "加密.class";
+        File file = new File(path);
+        try {
+            byte[] bytes = Files.readAllBytes(file.toPath());
+            decoderBytes(bytes);
+            Files.write(new File("shengsheng.class").toPath(), bytes);
+            return defineClass(name, bytes, 0, bytes.length);
+        } catch (IOException e) {
+            throw new ClassNotFoundException(name);
+        }
+    }
+
+    private void decoderBytes(byte[] bytes) {
+        for (int i = 0; i < bytes.length; i++) {
+            byte b = bytes[i];
+            bytes[i] = (byte) (b-1);
+        }
+    }
 }