spring - Tomcat 未加载 Dispatcher Servlet (ClassNotFoundException)

Question

我尝试根据上述问题的答案进行搜索和更改，但不起作用。我没有使用任何构建工具。

所有 jar 文件 jSTL1.2、commonloggings 1.1.3 和 Spring 3.2.3 jar 都位于 WebContent/WEB-INF/lib 中

index.jsp 是欢迎文件，在 Eclipse 浏览器中正确显示，但是当我单击 Controller 的超链接时，给出 404 请求的资源不可用。从日志看来 tomcat 没有加载调度程序 servlet

我尝试重新启动/清理并发布 tomcat，

使用 tomcat 7、jre7、eclipse kepller 4.0 和 java ee 2.0

感谢您的帮助

Tomcat 日志:

   ul 02, 2013 1:16:52 PM org.apache.catalina.core.ApplicationContext log
    I**NFO: No Spring WebApplicationInitializer types detected on classpath
    Jul 02, 2013 1:16:52 PM org.apache.catalina.core.ApplicationContext log
    INFO: Marking servlet spring as unavailable
    Jul 02, 2013 1:16:52 PM org.apache.catalina.core.StandardContext loadOnStartup
    SEVERE: Servlet /SpringMVC threw load() exception
    java.lang.ClassNotFoundException:             org.springframework.web.servlet.DispatcherServlet**
            
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1713)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1558)
    at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:527)
    at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:509)
    at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:137)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1144)
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1088)
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5123)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5407)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
    at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

Jul 02, 2013 1:16:53 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-bio-8080"]
Jul 02, 2013 1:16:53 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["ajp-bio-8009"]
Jul 02, 2013 1:16:53 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 11462 ms

web.xml

<?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" xmlns:web="http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>SpringMVC</display-name>

     <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
 
    <servlet>
        <servlet-name>spring</servlet-name>
        <servlet-class>
            org.springframework.web.servlet.DispatcherServlet
        </servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>spring</servlet-name>
        <url-pattern>*.html</url-pattern>
    </servlet-mapping>
</web-app>

spring-servlet.xml

<?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:mvc="http://www.springframework.org/schema/mvc"
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"

    xsi:schemaLocation="http://www.springframework.org/schema/mvc
                        http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
                        http://www.springframework.org/schema/beans
                        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
                        http://www.springframework.org/schema/context
                        http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <context:component-scan
        base-package="com.maverick.springmvc.controller" />

    <bean id="viewResolver"
        class="org.springframework.web.servlet.view.UrlBasedViewResolver">
        <property name="viewClass"
            value="org.springframework.web.servlet.view.JstlView" />
        <property name="prefix" value="/WEB-INF/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>

</beans>

HelloWorldController.java

package com.maverick.springmvc.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;


@Controller
public class HelloWorldController {


    @RequestMapping("/hello")
    public ModelAndView helloWorld() {

        System.out.println("test");
        String message = "Hello World, Spring 3.0!";
        return new ModelAndView("hello", "message", message);
    }
}

Answer 1

根据堆栈跟踪，您缺少包含 DispatcherServlet 类的 spring-webmvc.jar。尝试再次检查您的类路径(WEB-INF/lib)以确保该 jar 在那里。通常，在 Spring MVC 应用程序中，您需要这些 jar:

我还建议您使用依赖管理工具(例如:Maven/ivy)，否则自己管理 jar 太困难了