Spring cvc-elt.1: Cannot find the declaration of element 'beans '.

<? Xml version = "1.0" encoding = "UTF-8"?>
<Beans xmlns = "http://www.springframework.org/schema/beans"
Xmlns: xsi = "http://www.w3.org/2001/XMLSchema-instance"
Xmlns: aop = "http://www.springframework.org/schema/aop"
Xmlns: tx = "http://www.springframework.org/schema/tx"
Xmlns: context = "http://www.springframework.org/schema/context"
Xsi: schemaLocation ="
Http://www.springframework.org/schema/beans
Http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
Http://www.springframework.org/schema/aop
Http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
Http://www.springframework.org/schema/tx
Http://www.springframework.org/schema/tx/spring-tx-2.0.xsd>

 

This format exception: for example, the spring-aop-2.0.xsd written as a spring-aop.xsd will pop up spring cvc-elt.1: cannot find the declaration of element 'beans '.