Spring 报错：元素 "context:component-scan" 的前缀 "context" 未绑定的问题解决

Spring 配置文件报错：元素 "context:component-scan" 的前缀 "context" 未绑定,这是我在做项目的时候遇到的，经过项目经理及同事提醒解决了，这里就说下如何解决。

     1.spring配置信息如下

     2.错误信息如下

org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 8 in XML document from URL [file:/E:/InstallSoftware/tomcat/tomcat7u50_8888/webapps/jms/WEB-INF/classes/applicationContext.xml] is invalid; nested exception is org.xml.sax.SAXParseException; lineNumber: 8; columnNumber: 109; 元素 "context:component-scan" 的前缀 "context" 未绑定。 
  at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:399) 
  at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:336) 
  at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:304) 
  at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:181) 
  at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:217) 
  at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:188) 
  at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:125) 
  at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:94) 
  at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:129) 
  at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:537) 
  at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:452) 
  at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403) 
  at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306) 
  at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106) 
  at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4961) 
  at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5455) 
  at org.apache.catalina.util.Lifecyclebase.start(Lifecyclebase.java:150) 
  at org.apache.catalina.core.Containerbase$StartChild.call(Containerbase.java:1559) 
  at org.apache.catalina.core.Containerbase$StartChild.call(Containerbase.java:1549) 
  at java.util.concurrent.FutureTask.run(FutureTask.java:262) 
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
  at java.lang.Thread.run(Thread.java:745) 
Caused by: org.xml.sax.SAXParseException; lineNumber: 8; columnNumber: 109; 元素 "context:component-scan" 的前缀 "context" 未绑定。 
  at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:198) 
  at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:177) 
  at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:441) 
  at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:368) 
  at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:325) 
  at com.sun.org.apache.xerces.internal.impl.XMLNSdocumentScannerImpl.scanStartElement(XMLNSdocumentScannerImpl.java:289) 
  at com.sun.org.apache.xerces.internal.impl.XMLdocumentFragmentScannerImpl$FragmentContentDriver.next(XMLdocumentFragmentScannerImpl.java:2786) 
  at com.sun.org.apache.xerces.internal.impl.XMLdocumentScannerImpl.next(XMLdocumentScannerImpl.java:606) 
  at com.sun.org.apache.xerces.internal.impl.XMLNSdocumentScannerImpl.next(XMLNSdocumentScannerImpl.java:117) 
  at com.sun.org.apache.xerces.internal.impl.XMLdocumentFragmentScannerImpl.scandocument(XMLdocumentFragmentScannerImpl.java:510) 
  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848) 
  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777) 
  at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141) 
  at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:243) 
  at com.sun.org.apache.xerces.internal.jaxp.documentBuilderImpl.parse(documentBuilderImpl.java:347) 
  at org.springframework.beans.factory.xml.DefaultdocumentLoader.loaddocument(DefaultdocumentLoader.java:76) 
  at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoaddocument(XmlBeanDefinitionReader.java:429) 
  at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:391) 
  ... 22 more 
十一月 09, 2016 10:09:32 上午 org.apache.catalina.core.StandardContext listenerStart 
严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener 

【问题分析】

     配置文件中使用了context标签，但未声明。

【解决方案】
    在配置文件中加上context的声明

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