在web.xml中配置核心控制器之后就报错，显示404，注释之后显示页面正常

来源：3-6 核心控制器测试

LOEY_dun

2019-09-09 15:05:02

配置核心控制器

<servlet>
    <servlet-name>Global</servlet-name>
    <servlet-class>com.iss.db.global.DispatcherServlet</servlet-class>
</servlet>
<servlet-mapping>
    <servlet-name>Global</servlet-name>
    <url-pattern>*.do</url-pattern>
</servlet-mapping>

核心控制器代码

package com.iss.db.global;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import javax.servlet.GenericServlet;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class  DispatcherServlet extends GenericServlet {
    private ApplicationContext context;

    public void init() throws ServletException{
        super.init();
        context=new ClassPathXmlApplicationContext("applicationContext-mybatis.xml");
    }

    public void service(ServletRequest servletRequest, ServletResponse servletResponse) throws ServletException, IOException {
        HttpServletRequest request=(HttpServletRequest) servletRequest;
        HttpServletResponse response=(HttpServletResponse) servletResponse;



        String path=request.getServletPath().substring(1);
        String beanName=null;
        String methodName=null;
        int index=path.indexOf('/');
        if (index != -1){
            beanName=path.substring(0,index)+"Controller";
            methodName=path.substring(index+1,path.indexOf(".do"));
        }else {
            beanName="selfController";
            methodName=path.substring(0,path.indexOf(".do"));
        }

        Object obj=context.getBean(beanName);
        try {
            Method method=obj.getClass().getMethod(methodName,HttpServletRequest.class,HttpServletResponse.class);
            method.invoke(obj,request,response);
        }catch (NoSuchMethodException e){
            e.printStackTrace();
        }catch (IllegalAccessException e){
            e.printStackTrace();
        }catch (InvocationTargetException e){
            e.printStackTrace();
        }
    }
}

报错信息

09-Sep-2019 15:02:03.256 严重 [RMI TCP Connection(3)-127.0.0.1] org.apache.tomcat.util.modeler.BaseModelMBean.invoke Exception invoking method [manageApp]

java.lang.IllegalStateException: Error starting child

at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:720)

at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:690)

at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:705)

at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1728)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:289)

at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)

at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)

at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:457)

at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:406)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:289)

at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)

at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)

at com.sun.jmx.remote.security.MBeanServerAccessController.invoke(MBeanServerAccessController.java:468)

at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1468)

at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76)

at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1309)

at java.security.AccessController.doPrivileged(Native Method)

at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1408)

at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:829)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357)

at sun.rmi.transport.Transport$1.run(Transport.java:200)

at sun.rmi.transport.Transport$1.run(Transport.java:197)

at java.security.AccessController.doPrivileged(Native Method)

at sun.rmi.transport.Transport.serviceCall(Transport.java:196)

at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573)

at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:834)

at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:688)

at java.security.AccessController.doPrivileged(Native Method)

at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:687)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

at java.lang.Thread.run(Thread.java:748)

Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/cake]]

at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198)

at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:717)

... 43 more

Caused by: java.lang.NoClassDefFoundError: org/springframework/context/ApplicationContext

at java.lang.Class.getDeclaredFields0(Native Method)

at java.lang.Class.privateGetDeclaredFields(Class.java:2583)

at java.lang.Class.getDeclaredFields(Class.java:1916)

at org.apache.catalina.util.Introspection.getDeclaredFields(Introspection.java:110)

at org.apache.catalina.startup.WebAnnotationSet.loadFieldsAnnotation(WebAnnotationSet.java:269)

at org.apache.catalina.startup.WebAnnotationSet.loadApplicationServletAnnotations(WebAnnotationSet.java:137)

at org.apache.catalina.startup.WebAnnotationSet.loadApplicationAnnotations(WebAnnotationSet.java:69)

at org.apache.catalina.startup.ContextConfig.applicationAnnotationsConfig(ContextConfig.java:330)

at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:778)

at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:301)

at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)

at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5051)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

... 44 more

Caused by: java.lang.ClassNotFoundException: org.springframework.context.ApplicationContext

at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1365)

at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1188)

... 57 more

09-Sep-2019 15:02:03.258 严重 [RMI TCP Connection(3)-127.0.0.1] org.apache.tomcat.util.modeler.BaseModelMBean.invoke Exception invoking method [createStandardContext]

javax.management.RuntimeOperationsException: Exception invoking method [manageApp]

at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:298)