如何使用ASM框架访问匿名内部类

import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;

public class AnonymousInnerClassVisitor extends ClassVisitor {
    
    public AnonymousInnerClassVisitor() {
        super(Opcodes.ASM9);
    }
    
    @Override
    public MethodVisitor visitMethod(int access, String name, String descriptor, String signature, String[] exceptions) {
        MethodVisitor methodVisitor = super.visitMethod(access, name, descriptor, signature, exceptions);
        
        // 访问匿名内部类的方法
        if (name.equals("doSomething")) {
            methodVisitor = new MethodVisitor(Opcodes.ASM9, methodVisitor) {
                @Override
                public void visitCode() {
                    // 在方法开头插入代码
                    super.visitCode();
                    super.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
                    super.visitLdcInsn("Hello, ASM!");
                    super.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false);
                }
            };
        }
        
        return methodVisitor;
    }
    
    public static void main(String[] args) throws Exception {
        // 读取匿名内部类的字节码文件
        byte[] classBytes = AnonymousInnerClass.class.getClassLoader().getResourceAsStream("AnonymousInnerClass.class").readAllBytes();
        
        // 创建ClassReader对象
        ClassReader classReader = new ClassReader(classBytes);
        
        // 创建AnonymousInnerClassVisitor对象
        AnonymousInnerClassVisitor classVisitor = new AnonymousInnerClassVisitor();
        
        // 使用ClassReader和ClassVisitor进行类的访问和修改
        classReader.accept(classVisitor, ClassReader.SKIP_DEBUG);
    }
}