import javassist.ClassPool;
import javassist.CtClass;
import javassist.CtMethod;

//参考 https://www.52pojie.cn/thread-1824449-1-1.html
public class AsposeWords_22_12 {
    public static void main(String[] args) throws Exception {
        ClassPool.getDefault().insertClassPath("aspose-words-22.12-jdk17.jar"); //注意路径
        // 类文件1，从com.aspose.words.License类文件找到。
        CtClass clazz = ClassPool.getDefault().getCtClass("com.aspose.words.zzYvW");
        clazz.getDeclaredMethod("zzY34").setBody("{return com.aspose.words.zzZ8h.zzW8b;}");
        clazz.getDeclaredMethod("zzjS").setBody("{this.zzWbe = com.aspose.words.zzZ8h.zzW8b; zzZAO = this; }");
        CtMethod[] methodA = clazz.getDeclaredMethods();
        for (CtMethod ctMethod : methodA) {
            CtClass[] ps = ctMethod.getParameterTypes();
            if (ps.length == 1 && ctMethod.getName().equals("zzjS") && ps[0].getName().equals("java.io.InputStream")) {
                ctMethod.setBody("{this.zzWbe = com.aspose.words.zzZ8h.zzW8b; zzZAO = this; }");
            }
        }
        clazz.getDeclaredConstructors()[0].setBody("{System.out.println(\"do nothing at zzYvW.\");}");
        clazz.writeFile();

        // 类文件2，从类com.aspose.words.zzYvW的方法zzY34()进。大概是第171行。
        CtClass clazz2 = ClassPool.getDefault().getCtClass("com.aspose.words.zzWS8");
        clazz2.getDeclaredMethod("zzQG").setBody("{System.out.println(\"do nothing. this.zzW67(); this.zzW5m();\");}");
        clazz2.getDeclaredMethod("zzH0").setBody("{return com.aspose.words.zzY7H.zzZPG;}");
        //clazz2.getDeclaredConstructors()[0].setBody("{System.out.println(\"do nothing at zzWS8.\");}");
        clazz2.writeFile();

        // 类文件3（关键点：删除水印）从类com.aspose.words.zzWS8W的方法zzW5m()进，大概是665行。
        CtClass clazz3 = ClassPool.getDefault().getCtClass("com.aspose.words.zzYJa");
        clazz3.getDeclaredMethod("zzXuq").setBody("{zzYOl = 29273535023874148L;}");
        clazz3.writeFile();
    }
}