HTTP状态500 - servlet helloWorld的Servlet.init（）抛出异常

时间：2015-10-12 09:46:49

标签： java spring tomcat model-view-controller 

i am getting error when i run Spring MVC Helloword example program. I could not find exact root cause for this. Please some one help me what is the issue on this.


    HTTP Status 500 - Servlet.init() for servlet helloWorld threw exception

    --------------------------------------------------------------------------------

    type Exception report`enter code here`

    message Servlet.init() for servlet helloWorld threw exception

    description The server encountered an internal error that prevented it from fulfilling this request.

    exception 

    javax.servlet.ServletException: Servlet.init() for servlet helloWorld threw exception
        org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
        org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
        org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
        org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
        org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079)
        org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
        org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
        java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
        java.lang.Thread.run(Unknown Source)


    root cause 

    org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping#0' defined in ServletContext resource [/WEB-INF/helloWorld-servlet.xml]: Initialization of bean failed; nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [com.controller.HelloController] for bean with name '/hello.ds' defined in ServletContext resource [/WEB-INF/helloWorld-servlet.xml]; nested exception is java.lang.ClassNotFoundException: com.controller.HelloController
    Related cause: org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [com.controller.HelloController] for bean with name '/hello.ds' defined in ServletContext resource [/WEB-INF/helloWorld-servlet.xml]; nested exception is java.lang.ClassNotFoundException: com.controller.HelloController
        org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:521)
        org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:450)
        org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:290)
        org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
        org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:287)
        org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:189)
        org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:562)
        org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:871)
        org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:423)
        org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:443)
        org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:459)
        org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:340)
        org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:307)
        org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:127)
        javax.servlet.GenericServlet.init(GenericServlet.java:158)
        org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
        org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
        org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
        org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
        org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079)
        org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
        org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
        java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
        java.lang.Thread.run(Unknown Source)


    root cause 

    org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [com.controller.HelloController] for bean with name '/hello.ds' defined in ServletContext resource [/WEB-INF/helloWorld-servlet.xml]; nested exception is java.lang.ClassNotFoundException: com.controller.HelloController
        org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1208)
        org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:570)
        org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1277)
        org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:303)
        org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:284)
        org.springframework.context.support.AbstractApplicationContext.getBeanNamesForType(AbstractApplicationContext.java:1101)
        org.springframework.web.servlet.handler.AbstractDetectingUrlHandlerMapping.detectHandlers(AbstractDetectingUrlHandlerMapping.java:75)
        org.springframework.web.servlet.handler.AbstractDetectingUrlHandlerMapping.initApplicationContext(AbstractDetectingUrlHandlerMapping.java:58)
        org.springframework.context.support.ApplicationObjectSupport.initApplicationContext(ApplicationObjectSupport.java:119)
        org.springframework.web.context.support.WebApplicationObjectSupport.initApplicationContext(WebApplicationObjectSupport.java:71)
        org.springframework.context.support.ApplicationObjectSupport.setApplicationContext(ApplicationObjectSupport.java:73)
        org.springframework.context.support.ApplicationContextAwareProcessor.invokeAwareInterfaces(ApplicationContextAwareProcessor.java:99)
        org.springframework.context.support.ApplicationContextAwareProcessor.postProcessBeforeInitialization(ApplicationContextAwareProcessor.java:82)
        org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:394)
        org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1396)
        org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513)
        org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:450)
        org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:290)
        org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
        org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:287)
        org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:189)
        org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:562)
        org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:871)
        org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:423)
        org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:443)
        org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:459)
        org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:340)
        org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:307)
        org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:127)
        javax.servlet.GenericServlet.init(GenericServlet.java:158)
        org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
        org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
        org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
        org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
        org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079)
        org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
        org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
        java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
        java.lang.Thread.run(Unknown Source)


    root cause 

    java.lang.ClassNotFoundException: com.controller.HelloController
        org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1858)
        org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1709)
        org.springframework.util.ClassUtils.forName(ClassUtils.java:258)
        org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:408)
        org.springframework.beans.factory.support.AbstractBeanFactory.doResolveBeanClass(AbstractBeanFactory.java:1229)
        org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1200)
        org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:570)
        org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1277)
        org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:303)
        org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:284)
        org.springframework.context.support.AbstractApplicationContext.getBeanNamesForType(AbstractApplicationContext.java:1101)
        org.springframework.web.servlet.handler.AbstractDetectingUrlHandlerMapping.detectHandlers(AbstractDetectingUrlHandlerMapping.java:75)
        org.springframework.web.servlet.handler.AbstractDetectingUrlHandlerMapping.initApplicationContext(AbstractDetectingUrlHandlerMapping.java:58)
        org.springframework.context.support.ApplicationObjectSupport.initApplicationContext(ApplicationObjectSupport.java:119)
        org.springframework.web.context.support.WebApplicationObjectSupport.initApplicationContext(WebApplicationObjectSupport.java:71)
        org.springframework.context.support.ApplicationObjectSupport.setApplicationContext(ApplicationObjectSupport.java:73)
        org.springframework.context.support.ApplicationContextAwareProcessor.invokeAwareInterfaces(ApplicationContextAwareProcessor.java:99)
        org.springframework.context.support.ApplicationContextAwareProcessor.postProcessBeforeInitialization(ApplicationContextAwareProcessor.java:82)
        org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:394)
        org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1396)
        org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513)
        org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:450)
        org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:290)
        org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
        org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:287)
        org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:189)
        org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:562)
        org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:871)
        org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:423)
        org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:443)
        org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:459)
        org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:340)
        org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:307)
        org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:127)
        javax.servlet.GenericServlet.init(GenericServlet.java:158)
        org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
        org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
        org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
        org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
        org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079)
        org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
        org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
        java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
        java.lang.Thread.run(Unknown Source)


    note The full stack trace of the root cause is available in the Apache Tomcat/7.0.64 logs.


    --------------------------------------------------------------------------------

    Apache Tomcat/7.0.64

Controller class:

package com.controller;

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

public class HelloController implements Controller {
    public ModelAndView handleRequest(HttpServletRequest req,
            HttpServletResponse res) throws Exception {
        String name = req.getParameter("name");
        Map m = new HashMap();
        m.put("msg", "Hello" + name);
        ModelAndView mav = new ModelAndView("success", m);
        return mav;
    }
}

web.xml

<?xml version="1.0" encoding="UTF-8"?>

<web-app version="2.4"
         xmlns="http://java.sun.com/xml/ns/j2ee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
         http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" >

  <display-name>FirstMVCHelloWorld</display-name>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>   
  </welcome-file-list>
  <!--  default -->
  <servlet>
    <servlet-name>helloWorld</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  </servlet>
  <servlet-mapping>
  <servlet-name>helloWorld</servlet-name>
  <url-pattern>*.ds</url-pattern>
  </servlet-mapping>
</web-app>

helloWorld-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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
<!--  default handler mapping -->
<!--  handler -->
<bean class = "org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>
<!--  controller -->
<bean name = "/hello.ds" class = "com.controller.HelloController" />
<!--  view resolver -->
<bean class = "org.springframework.web.servlet.view.InternalResourceViewResolver" >
        <property name = "prefix" value ="/" />
        <property name = "suffix" value =".jsp" />
</bean>

</beans>

index.jsp

  <h1>HelloWorld</h1>
  <form action = "./hello.ds">
  NAME:<input type="text" value="name"/>
       <input type="submit"  value="sayHello"/>       
  </form>

success.jsp

${msg}

当我运行Spring MVC Hello word示例程序时，我收到错误。我找不到确切的根本原因。请有人帮我解决这个问题。

请在上面附上我的代码。做必要的。

0 个答案:

没有答案
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