java.lang.ClassNotFoundException: org.springframework.web.servlet.DispatcherServlet解決

spring配置之後啟動報錯，如下：

java.lang.ClassNotFoundException: org.springframework.web.servlet.DispatcherServlet

at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1333)

at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1167)

at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:509)

at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:490)

at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:118)

at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1091)

at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1027)

at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5038)

at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5348)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398)

at java.util.concurrent.FutureTask.run(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)

解決方法：

是因為沒有添加相應的spring-webmvc包，maven添加或者下載下傳加上即可，如下：

<dependency>
	<groupId>org.springframework</groupId>
	<artifactId>spring-webmvc</artifactId>
	<version>4.3.11.RELEASE</version>
</dependency>

<dependency>
	<groupId>javax.servlet</groupId>
	<artifactId>javax.servlet-api</artifactId>
	<version>3.1.0</version>
</dependency>           

加上引用即可！