Spring配置文件約束，解決xml文件提示的問題

<beans xmlns="http://www.springframework.org/schema/beans"
	    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	    xmlns:context="http://www.springframework.org/schema/context"
	    xmlns:aop="http://www.springframework.org/schema/aop"
	    xmlns:tx="http://www.springframework.org/schema/tx"
	    xsi:schemaLocation="http://www.springframework.org/schema/beans 
	    http://www.springframework.org/schema/beans/spring-beans.xsd
	    http://www.springframework.org/schema/context
	    http://www.springframework.org/schema/context/spring-context.xsd
	    http://www.springframework.org/schema/aop
	    http://www.springframework.org/schema/aop/spring-aop.xsd
	    http://www.springframework.org/schema/tx
	    http://www.springframework.org/schema/tx/spring-tx.xsd">
    

</beans>

註釋：

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    //上面兩個是基礎IOC的約束，必備
    xmlns:context="http://www.springframework.org/schema/context"
    //上面一個是開啓註解管理Bean對象的約束
    xmlns:aop="http://www.springframework.org/schema/aop"
    //aop的註解約束
    xmlns:tx="http://www.springframework.org/schema/tx"
    //事務的約束
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans.xsd
    //上面兩個是基礎IOC的約束，必備
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd
    //上面一個是開啓註解管理Bean對象的約束
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop.xsd
    //aop的註解約束
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx.xsd">
    //事務的約束
</beans>