DispatcherServlet.class Not Found

Question

我是Spring和Maven的新手。我已經使用Maven Dependencies創建了一個簡單的SpringMVC項目。我已經使用Maven下載並添加了所有需要的彈簧罐。當我跑我的項目，我得到這個例外

java.lang.ClassNotFoundException: org.springframework.web.servlet.DispatcherServlet.class 
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720) 
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571) 
    at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:530) 
    at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:512) 
    at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:139) 
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1148) 
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1087) 
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5229) 
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5516) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1575) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1565) 
    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) 

我讀了所有與此問題相關的職位和我的固定部署大會 這裏展開組件 調度-servlet.xml文件內容

<?xml version="1.0" encoding="UTF-8"?> 
<beans xmlns="http://www.springframework.org/schema/beans" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:context="http://www.springframework.org/schema/context" 
    xmlns:mvc="http://www.springframework.org/schema/mvc" 
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd 
     http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd 
     http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd"> 

    <context:component-scan base-package="com.causecode.controllers"></context:component-scan> 
    <mvc:annotation-driven></mvc:annotation-driven> 


    <bean id="HtmlViewResolver" 
     class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 
    <property name="prefix" value="/WEB-INF/views/"></property> 
    <property name="suffix" value=".html"></property> 
    </bean> 
</beans> 

pom.xml文件內容

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 
    <modelVersion>4.0.0</modelVersion> 
    <groupId>com.causecode.challenge.spring</groupId> 
    <artifactId>contact</artifactId> 
    <version>0.0.1-SNAPSHOT</version> 
    <packaging>war</packaging> 
    <build> 
    <sourceDirectory>src</sourceDirectory> 
    <plugins> 
     <plugin> 
     <artifactId>maven-compiler-plugin</artifactId> 
     <version>3.3</version> 
     <configuration> 
      <source>1.8</source> 
      <target>1.8</target> 
     </configuration> 
     </plugin> 
     <plugin> 
     <artifactId>maven-war-plugin</artifactId> 
     <version>2.6</version> 
     <configuration> 
      <warSourceDirectory>WebContent</warSourceDirectory> 
      <failOnMissingWebXml>false</failOnMissingWebXml> 
     </configuration> 
     </plugin> 
    </plugins> 
    </build> 
    <dependencies> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-core</artifactId> 
     <version>4.2.4.RELEASE</version> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-beans</artifactId> 
     <version>4.2.4.RELEASE</version> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-context</artifactId> 
     <version>4.2.4.RELEASE</version> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-jdbc</artifactId> 
     <version>4.2.4.RELEASE</version> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-web</artifactId> 
     <version>4.2.4.RELEASE</version> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-webmvc</artifactId> 
     <version>4.2.4.RELEASE</version> 
    </dependency> 
    <dependency> 
     <groupId>javax.servlet</groupId> 
     <artifactId>servlet-api</artifactId> 
     <version>3.0-alpha-1</version> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-aop</artifactId> 
     <version>4.2.4.RELEASE</version> 
    </dependency> 
    <dependency> 
     <groupId>aopalliance</groupId> 
     <artifactId>aopalliance</artifactId> 
     <version>1.0</version> 
    </dependency> 
    </dependencies> 
</project> 

項目瀏覽圖片

Answer 1

有幾件事你可以嘗試。

• 我想用maven乾淨的構建不起作用？

• 您可能會嘗試手動將庫移動到WEB-INF/lib。

• 當您使用Tomcat進行部署時，您可以嘗試以下操作：打開服務器窗口，右鍵單擊Tomcat服務器，然後單擊「乾淨的Tomcat工作目錄...」。