通配符的匹配很全面, 但无法找到元素 ‘context:component-scan‘ 的声明 异常解决

"C:\Program Files\Java\jdk1.8.0_111\bin\java.exe" "-javaagent:G:\Program Files\JetBrains\IntelliJ IDEA 2020.3.3\lib\idea_rt.jar=56537:G:\Program Files\JetBrains\IntelliJ IDEA 2020.3.3\bin" -Dfile.encoding=UTF-8 -classpath "C:\Program Files\java\jdk1.8.0_111\jre\lib\charsets.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\deploy.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\ext\access-bridge-64.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\ext\cldrdata.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\ext\dnsns.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\ext\jaccess.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\ext\jfxrt.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\ext\localedata.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\ext\nashorn.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\ext\sunec.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\ext\sunjce_provider.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\ext\sunmscapi.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\ext\sunpkcs11.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\ext\zipfs.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\javaws.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\jce.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\jfr.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\jfxswt.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\jsse.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\management-agent.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\plugin.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\resources.jar;C:\Program Files\java\jdk1.8.0_111\jre\lib\rt.jar;D:\workspace\idea_gupao\gp_spring_ioc_05\target\classes;F:\server\apache-maven-3.5.4\maven-repository\org\springframework\spring-context\5.1.17.RELEASE\spring-context-5.1.17.RELEASE.jar;F:\server\apache-maven-3.5.4\maven-repository\org\springframework\spring-aop\5.1.17.RELEASE\spring-aop-5.1.17.RELEASE.jar;F:\server\apache-maven-3.5.4\maven-repository\org\springframework\spring-beans\5.1.17.RELEASE\spring-beans-5.1.17.RELEASE.jar;F:\server\apache-maven-3.5.4\maven-repository\org\springframework\spring-core\5.1.17.RELEASE\spring-core-5.1.17.RELEASE.jar;F:\server\apache-maven-3.5.4\maven-repository\org\springframework\spring-jcl\5.1.17.RELEASE\spring-jcl-5.1.17.RELEASE.jar;F:\server\apache-maven-3.5.4\maven-repository\org\springframework\spring-expression\5.1.17.RELEASE\spring-expression-5.1.17.RELEASE.jar" com.gupaoedu.AppStarter
Exception in thread "main" org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 14 in XML document from class path resource [applicationContext.xml] is invalid; nested exception is org.xml.sax.SAXParseException; lineNumber: 14; columnNumber: 67; cvc-complex-type.2.4.c: 通配符的匹配很全面, 但无法找到元素 'context:component-scan' 的声明。
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:405)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:337)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:305)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:188)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:224)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:195)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:257)
    at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:128)
    at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:94)
    at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:130)
    at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:637)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:522)
    at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:144)
    at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:85)
    at com.gupaoedu.AppStarter.main(AppStarter.java:16)
Caused by: org.xml.sax.SAXParseException; lineNumber: 14; columnNumber: 67; cvc-complex-type.2.4.c: 通配符的匹配很全面, 但无法找到元素 'context:component-scan' 的声明。
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:134)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:396)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:327)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:284)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator$XSIErrorReporter.reportError(XMLSchemaValidator.java:452)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.reportSchemaError(XMLSchemaValidator.java:3230)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(XMLSchemaValidator.java:1911)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.emptyElement(XMLSchemaValidator.java:760)
    at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:351)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2784)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602)
    at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:112)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:841)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:770)
    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:339)
    at org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocument(DefaultDocumentLoader.java:77)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadDocument(XmlBeanDefinitionReader.java:435)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:393)
    ... 14 more

Process finished with exit code 1
----------------------------------解决方法---------------------------------

配置文件可能缺少声明！！！

本人遇到的异常如上，加入以下两行声明  就妥了

http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd