HTTP状态500 - 实例化servlet类时出错org.springframeworks.web.servlet.DispatcherServlet

时间：2017-03-12 07:14:58

标签： java error-handling http-status-code-404 http-status-code-500 servletexception 

HTTP Status 500 - Error instantiating servlet class org.springframeworks.web.servlet.DispatcherServlet


type Exception report

message Error instantiating servlet class org.springframeworks.web.servlet.DispatcherServlet

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

exception
javax.servlet.ServletException: Error instantiating servlet class org.springframeworks.web.servlet.DispatcherServlet
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:509)
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1104)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1524)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1480)
    java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    java.util.concurrent.ThreadPoolExecutor$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: org.springframeworks.web.servlet.DispatcherServlet
    org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1333)
    org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1167)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:509)
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1104)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1524)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1480)
    java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    java.util.concurrent.ThreadPoolExecutor$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/8.0.41 logs.**strong text**


Apache Tomcat/8.0.41

日志：

SEVERE：为servlet调度程序分配异常 java.lang.ClassNotFoundException：org.springframeworks.web.servlet.DispatcherServlet     在org.apache.catalina.loader.WebappClassLoaderBase.loadClass（WebappClassLoaderBase.java:1333）     在org.apache.catalina.loader.WebappClassLoaderBase.loadClass（WebappClassLoaderBase.java:1167）     at org.apache.catalina.core.DefaultInstanceManager.loadClass（DefaultInstanceManager.java:518）     在org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged（DefaultInstanceManager.java:499）     在org.apache.catalina.core.DefaultInstanceManager.newInstance（DefaultInstanceManager.java:118）     在org.apache.catalina.core.StandardWrapper.loadServlet（StandardWrapper.java:1091）     在org.apache.catalina.core.StandardWrapper.allocate（StandardWrapper.java:817）     在org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:135）     at org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:94）     在org.apache.catalina.authenticator.AuthenticatorBase.invoke（AuthenticatorBase.java:504）     at org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:141）     at org.apache.catalina.valves.ErrorReportValve.invoke（ErrorReportValve.java:79）     at org.apache.catalina.valves.AbstractAccessLogValve.invoke（AbstractAccessLogValve.java:620）     在org.apache.catalina.core.StandardEngineValve.invoke（StandardEngineValve.java:88）     在org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:509）     在org.apache.coyote.http11.AbstractHttp11Processor.process（AbstractHttp11Processor.java:1104）     at org.apache.coyote.AbstractProtocol $ AbstractConnectionHandler.process（AbstractProtocol.java:684）     在org.apache.tomcat.util.net.NioEndpoint $ SocketProcessor.doRun（NioEndpoint.java:1524）     在org.apache.tomcat.util.net.NioEndpoint $ SocketProcessor.run（NioEndpoint.java:1480）     at java.util.concurrent.ThreadPoolExecutor.runWorker（Unknown Source）     at java.util.concurrent.ThreadPoolExecutor $ Worker.run（Unknown Source）     at org.apache.tomcat.util.threads.TaskThread $ WrappingRunnable.run（TaskThread.java:61）     在java.lang.Thread.run（未知来源）

分配器一servlet.xml中

<!--  Let Front Controller know where the other controller 
allign so than i have added context Element -->
<beans xmlns = "http://www.springframework.org/schema/beans"
   xmlns:context="http://www.springframework.org/schema/context"
   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.xsd
   http://www.springframework.org/schema/context
   http://www.springframework.org/schema/context/spring-context.xsd
   ">

   <context:component-scan base-package="com.irk.FrontEndShoping.Controller" />

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

        </bean>

   </beans>

Web.xml中：

<?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" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1">
  <display-name>Archetype Created Web Application</display-name>
  <servlet>
    <servlet-name>dispatcher</servlet-name>
    <servlet-class>org.springframeworks.web.servlet.DispatcherServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>dispatcher</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
</web-app>

Page.jsp：

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Online Shoping</title>
</head>
<body>  
    ${Greeting}
</body>
</html>

的pom.xml：

<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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.irk</groupId>
    <artifactId>FrontEndShoping</artifactId>
    <packaging>war</packaging>
    <version>0.0.1-SNAPSHOT</version>
    <name>FrontEndShoping Maven Webapp</name>
    <url>http://maven.apache.org</url>

    <properties>
        <javaee.version>7.0</javaee.version>
    </properties>
    <dependencies>
        <!-- spring mvc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>4.3.6.RELEASE</version>
        </dependency>



        <!-- https://mvnrepository.com/artifact/javax/javaee-api -->
        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-api</artifactId>
            <version>${javaee.version}</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
        <finalName>FrontEndShoping</finalName>
    </build>
</project>

的PageController：

package com.irk.FrontEndShoping.Controller;

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

/**
 * 
 * @author HP
 *
 */
@Controller
public class PageController {

    @RequestMapping(value = {"/", "/home", "/index"})
    public ModelAndView getPage() {
        ModelAndView mv = new ModelAndView("page");
        mv.addObject("Greeting", "Hello its Greeting from Controller");
        return mv;
    }
}

使用：
包com.irk.FrontEndShoping.Controller; 

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

/**
 * 
 * @author HP
 *
 */
@Controller
public class PageController {

    @RequestMapping(value = {"/", "/home", "/index"})
    public ModelAndView getPage() {
        ModelAndView mv = new ModelAndView("page");
        mv.addObject("Greeting", "Hello its Greeting from Controller");
        return mv;
    }
}

使用：

java version "1.8.0_121"
Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
Apache Maven 3.3.3
Apache Tomcate:  apache-tomcat-8.0.41

请您解释一下为什么这个错误即将发生 以及如何解决所有500错误 请一些特定的我已经看到了这么多不同的解决方案，这是不行的我正在寻找一些适用于500错误的正确答案

1 个答案:

答案 0 :(得分：1)

用30分钟观察你的代码之后我已经拿走了你的代码并尝试在我的本地运行，最后我找到了解决方案：请参阅下面给出的属性，你已将其添加到web.xml中，这是不正确的

<servlet-class>org.springframeworks.web.servlet.DispatcherServlet</servlet-class>

必须是

<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
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