org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document fro

org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from class path resource [WebRoot/WEB-INF/springmvc-config.xml]; nested exception is java.io.FileNotFoundException: class path resource [WebRoot/WEB-INF/springmvc-config.xml] cannot be opened because it does not exist

原报错信息为：

org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from class path resource [WEB-INF/springmvc-config.xml]; nested exception is java.io.FileNotFoundException: class path resource [WEB-INF/springmvc-config.xml] cannot be opened because it does not exist
	org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:343)
	org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:303)
	org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:180)
	org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:216)
	org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:187)
	org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:125)
	org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:94)
	org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:129)
	org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:537)
	org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:452)
	org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:658)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:624)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:672)
	org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:543)
	org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484)
	org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
	javax.servlet.GenericServlet.init(GenericServlet.java:158)
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:474)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
	org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783)
	org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
	org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:789)
	org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1437)
	org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	java.lang.Thread.run(Thread.java:745)

root cause

java.io.FileNotFoundException: class path resource [WEB-INF/springmvc-config.xml] cannot be opened because it does not exist
	org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:172)
	org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:329)
	org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:303)
	org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:180)
	org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:216)
	org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:187)
	org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:125)
	org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:94)
	org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:129)
	org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:537)
	org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:452)
	org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:658)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:624)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:672)
	org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:543)
	org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484)
	org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
	javax.servlet.GenericServlet.init(GenericServlet.java:158)
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:474)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
	org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783)
	org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
	org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:789)
	org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1437)
	org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	java.lang.Thread.run(Thread.java:745)

note The full stack trace of the root cause is available in the Apache Tomcat/8.5.9 logs.

找到错误定位位置： class path resource [WebRoot/WEB-INF/springmvc-config.xml] cannot be opened because it does not exist

查看源代码：web.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<web-app 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee"
 xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
  http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1">
  <servlet>
          <servlet-name>springmvc</servlet-name>
          <!-- servlet对应的class -->
          <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
          <!-- 当前servlet的参数信息 -->
          <init-param>
              <!-- <param-name>contextConfigLocation</param-name>
              <param-value>/WebRoot/WEB-INF/springmvc-config.xml</param-value> -->
              <param-name>contextConfigLocation</param-name>  
              <param-value>classpath:/WEB-INF/springmvc-config.xml</param-value>  
          </init-param>
          <load-on-startup>1</load-on-startup>
    </servlet>
    
    <!-- servlet 映射声明 -->
    <servlet-mapping>
         <servlet-name>springmvc</servlet-name>
         <url-pattern>/</url-pattern>
    </servlet-mapping>
    
</web-app>

原因在自己拷贝被人代码是不小心：多了classpath：

如果在 spring-config.xml重定义了扫描路径 <context:component-scan base-package=" com.wys.springmvc" />
          <mvc:default-servlet-handler /> 

那么这里才可以加classpath

去掉之后就可以运行了

所以说在写代码是尽量自己写，实在是要拷贝一定要检查自你这边是不是适用；