springmvc.xml配置文件error

闲着没事点了Tomcat和project这两个的clean，然后项目的springmvc.xml配置文件里自动扫描注解报错

- cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element 'context:component-scan'.等等

解决方法：xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">

 http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd这个是添加后就不报错的