錯誤資訊（博主用的是4.2.4版）

嚴重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener

org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 2 in XML document from class 

path resource [applicationContext.xml] is
 
 invalid; nested exception is org.xml.sax.SAXParseException; lineNumber: 2; columnNumber: 325; cvc-elt.1: 找不到元素 'beans' 的宣告。

博主之前的約束是這樣的

<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 

xmlns="http://www.springframework.org/schema/beans" 

xsi:schemaLocation="http://www.springframework.org/schema/beans 

http://www.springframework.org/schema/beans/spring-framework-4.2.4.RELEASE-dist\spring-framework-4.2.4.RELEASE\schema\beans\spring-beans-4.2.xsd "
 
>

很明顯，導錯了，所以以後出現這種錯誤，先看看約束有沒有正確
正確的是這樣的：

<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 

xmlns="http://www.springframework.org/schema/beans" 

xsi:schemaLocation="http://www.springframework.org/schema/beans 

http://www.springframework.org/schema/beans/spring-beans-4.2.xsd ">