【❤️终极解决方案❤️】Could not open ServletContext resource [/WEB-INF/dispatcher-servlet.xml]

java.io.FileNotFoundException: Could not open ServletContext resource [/WEB-INF/dispatcher-servlet.xml]
	org.springframework.web.context.support.ServletContextResource.getInputStream(ServletContextResource.java:159)
	org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:333)
	org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:310)
	org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:188)
	org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:224)
	org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:195)
	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:130)
	org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:671)
	org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:553)
	org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:702)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:668)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:716)
	org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:591)
	org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:530)
	org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:170)
	javax.servlet.GenericServlet.init(GenericServlet.java:158)
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
	org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360)
	org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399)
	org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
	org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890)
	org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1743)
	org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
	org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	java.lang.Thread.run(Thread.java:748)

1、导致原因：

如同上面说的，启动Tomcat之后，项目初始化找不到配置文件dispatcher-servlet.xml。

1.1、配置文件命名问题

• web.xml文件中配置的servlet名字和springmvc配置文件的名字不一样，修改成一样即可。

这里要注意的是：的名字默认为servlet-name 的值-servlet.xml，所以我们需要删除第一张图中dispatcher-servlet后面的“-servlet”部分，因为这个部分是默认就有的。

• springmvc的配置文件是：dispatcher-servlet.xml

• servlet-name配置是:

    <servlet>
        <servlet-name>dispatcher</servlet-name>//这里不能写成dispatcher-servlet，因为 -servlet是默认就有的！！！
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

1.2、Spring容器启动问题

• Spring容器启动的问题，没有配置好启动的spring配置文件。

<context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>

这个文件的映射配置是必须的，而且命名不能自定义，必修是 <param-name>contextConfigLocation</param-name>

2、参考文章

• 《关于“Could not open ServletContext resource [/WEB-INF/applicationContext.xml]”解决方案》
• 《解决 Could not open ServletContext resource [/WEB-INF/core-servlet.xml]异常》
• 《初学springMVC报错–Servlet.init() for servlet DispatcherServlet threw exception》