java后台打印session内容

 HttpSession session = request.getSession();
        //将person对象绑定到session中
        Person p = new Person("100","jack");
        session.setAttribute("person",p);
 
        // 获取session中所有的键值
        Enumeration<?> enumeration = session.getAttributeNames();
        // 遍历enumeration
        while (enumeration.hasMoreElements()) {
            // 获取session键值
            String name = enumeration.nextElement().toString();
            // 根据键值取session中的值
            Object value = session.getAttribute(name);
            // 打印结果
            System.out.println(name + " : " + value);
        }

打印结果     person : Person [id=100, name=jack]