java – 使用spring获取错误消息“cvc-elt.1：找不到元素”bean

Exception in thread "main" org.springframework.beans.factory.BeanDefinitionStoreException: Line 2 in XML document from class path resource [context.xml] is invalid; nested exception is org.xml.sax.SAXParseException: cvc-elt.1: Cannot find the declaration of element 'beans'.
org.xml.sax.SAXParseException: cvc-elt.1: Cannot find the declaration of element 'beans'.
      at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)
      at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:131)
      at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:384)
      at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:318)

以下是我的代码的初始部分：

public static void main(String[] args) {

        try {

            BeanFactory beanfactory = new ClassPathXmlApplicationContext(
                    "context.xml");


            FirstBean bean = (FirstBean) beanfactory.getBean("show");

这是我的context.xml文件：

<?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"
 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="anotherBean" class="AnotherBean" />
<bean id="show" class="FirstBean">
<constructor-arg ref="anotherBean" />
</bean>
<bean id="populateFD" class="PopulateFactData">
<constructor-arg value="localhost" />
<constructor-arg value="3309" />
</bean>
</beans>