No qualifying bean of type 'org.apache.catalina.User' available
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org.springframework.beans.factory.NoSuchBeanDefinitionException:No qualifying bean of type ‘com.wc.aop4.UserDao’ available与 java.lang.ClassCastException: com.sun.proxy.$Proxy15 cannot be cast to com.wc.aop4.UserDao
我的项目为
UserDao继承了IUSerDao接口
在我的Test.java中
ClassPathXmlApplicationContext context=new ClassPathXmlApplicationContext("com/wc/aop4/bean.xml"); UserDao userDao=(UserDao) context.getBean(UserDao.class); userDao.test(); context.close();
问题就在这
我的UserDao实现了IUserDao接口,context.getBean(User.class)这个方法在对象实现接口的时候,生成的对象应是接口类型的。
改正:
IUserDao userDao=(IUserDao) context.getBean(UserDao.class);
当代码为:
UserDao userDao=(UserDao) context.getBean("userDao");
报的错为:
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