No bean named ‘MathIpml‘ is defined 解决方法

No bean named ‘MathIpml‘ is defined 解决方法

 ApplicationContext ac = new ClassPathXmlApplicationContext("Aop.xml");
          Math   math = ac.getBean("MathIpml",Math.class);//MathIpml首字母小写
          double i = math.add(9.0, 15.0);
        System.out.println(i);

    Math   math = ac.getBean("mathIpml",Math.class);//MathIpml首字母小写