请不要将此帖子标记为重复帖子,因为我在相关问题中没有找到任何好的资源。
使用的技术:- Spring MVC 4.3.3.RELEASE 摇篮3.1 雄猫9.0
我创建了一个动态 Web 项目,当我运行它时,出现以下错误
HTTP Status 500 - Error instantiating servlet class org.springframework.web.servlet.DispatcherServlet
type Exception report
message Error instantiating servlet class org.springframework.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.springframework.web.servlet.DispatcherServlet
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:522)
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:349)
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:1102)
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:788)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1485)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Thread.java:745)
root cause
java.lang.ClassNotFoundException: org.springframework.web.servlet.DispatcherServlet
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1299)
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1133)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:522)
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:349)
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:1102)
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:788)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1485)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Thread.java:745)
据说它找不到调度程序Servlet类,但是当我
ctrl + click
中的调度程序Servlet路径时,它到达了Spring DispatcherServlet类。我无法找到这个问题的根本原因。这是我的
spring-dispatcher-servlet
和
web.xml
文件spring-dispatcher-servlet.xml
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" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>MenuOrder</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>spring-dispatcher</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>spring-dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web>
spring-dispatcher-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">
<bean id = "HandlerMapping" class = "org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>
<bean id = "viewResolver"
class = "org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name = "prefix">
<value>/WEB-INF/</value>
</property>
<property name = "sufix">
<value>.jsp</value>
</property>
</bean>
</beans>
Project directory
文件
gradle.build
整个项目代码可以在https://github.com/viper-pranish/menu-order
从 gradle.build 中删除
allprojects{
apply plugin: 'java'
apply plugin: 'eclipse-wtp'
group = 'com'
version = '0.0.1-SNAPSHOT'
}
subprojects{
tasks.withType(JavaCompile){
options.encoding = 'UTF-8'
}
}
allprojects {
task hello { task -> println "I'm $task.project.name" }
}
allprojects{
repositories {
mavenLocal()
jcenter()
mavenCentral()
}
dependencies {
// The production code uses the SLF4J logging API at compile time
// compile 'org.slf4j:slf4j-api:1.7.21'
//spring web
compile group: 'org.springframework', name: 'spring-webmvc', version: '4.3.3.RELEASE'
// spring core
compile group: 'org.springframework', name: 'spring-core', version: '4.3.3.RELEASE'
// spring context support
compile group: 'org.springframework', name: 'spring-context-support', version: '4.3.3.RELEASE'
// ORM dependencies
// spring jpa
compile group: 'org.springframework.data', name: 'spring-data-jpa', version: '1.10.4.RELEASE'
// hibernate-entity manager
compile group: 'org.hibernate', name: 'hibernate-entitymanager', version: '5.2.2.Final'
// End of ORM dependencies
// postgres connector
compile group: 'org.postgresql', name: 'postgresql', version: '9.4-1200-jdbc41'
// Junit
compile group: 'junit', name: 'junit', version: '4.12'
// servlet
compile group: 'javax.servlet', name: 'javax.servlet-api', version: '4.0.0-b01'
compile group: 'javax.el', name: 'javax.el-api', version: '2.2.1'
compile group: 'org.springframework', name: 'spring', version: '3.2.0.RC1'
}
}
并添加
compile group: 'org.springframework', name: 'spring', version: '3.2.0.RC1'
您也可以提供您的控制器 url 映射
apply plugin: 'war'
切换到 Tomcat version 9 解决了我的问题。 Tomcat 9 与许多可能在新版本中遇到问题的应用程序提供了更好的兼容性。我建议进行此更改,看看它是否可以解决您项目中的问题。如果您遇到任何其他问题,请随时寻求额外帮助。