struts-核心内容-10-Ognl表达式语言

    @Test
    public void testOgnl() throws OgnlException {

        //创建一个ognl对象
        OgnlContext context = new OgnlContext();

        User user = new User();

        user.setId("1");

        user.setName("cx");

        //设置根元素
        context.setRoot(user);

        //context.put("user",user);
       
       //Object ognl = Ognl.parseExpression("#user.name");

// 底层解析
        Object ognl = Ognl.parseExpression("name");
        //得到value
        Object value = Ognl.getValue(ognl,context,context.getRoot());

        System.out.println(value);

        //context.put("cn","China");

        //String value = (String) context.get("cn");

        //System.out.println(value);

    }