提交作业 (#34)

merge

Author: he-jw

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

@@ -1,9 +1,54 @@
 package club.shengsheng;
 
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
 
 /**
  * @author [email protected]
  **/
 public class MyClassLoader extends ClassLoader {
 
+    public MyClassLoader() {
+        super();
+    }
+
+    @Override
+    protected Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException {
+        synchronized (getClassLoadingLock(name)) {
+            // First, check if the class has already been loaded
+            Class<?> c = findLoadedClass(name);
+            if (c == null) {
+                if (name.startsWith("tech.insight")) {
+                    c = findClass(name);
+                } else {
+                    c = getParent().loadClass(name);
+                }
+            }
+            if (resolve) {
+                resolveClass(c);
+            }
+            return c;
+        }
+    }
+
+    @Override
+    protected Class<?> findClass(String name) throws ClassNotFoundException {
+        String path = name.replace(".", "/").concat(".class");
+        String fileName = "加密" + ".class";
+        File file = new File("./", fileName);
+        Path filePath = file.toPath();
+        System.out.println(filePath);
+        try {
+            byte[] bytes = Files.readAllBytes(filePath);
+            for (int i = 0; i < bytes.length; i++) {
+                bytes[i] = (byte) (bytes[i] - 1);
+            }
+            return defineClass(name, bytes, 0, bytes.length);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
 }