javax.servlet.ServletException: Servlet.init() for servlet springmvc threw exception

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发布于 2024-04-07 15:55:49

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发布于 2024-04-07 15:55:49

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SSM项目部署到Tomcat之后,浏览器地址栏访问Controller层,出现如下Error,

摘要：

本文探讨了一个常见的Java Web应用程序中的错误，即"javax.servlet.ServletException: Servlet.init() for servlet springmvc threw exception"异常。文章将分析该异常出现的问题、可能的原因以及解决方法，以帮助读者更好地理解和解决这种情况下的错误。

引言：

在开发Java Web应用程序时，有时会遇到"javax.servlet.ServletException: Servlet.init() for servlet springmvc threw exception"异常。这种异常常常导致应用程序无法正常启动，影响开发和测试工作。本文将深入探讨这个异常的原因，以及如何解决它，以帮助读者更好地应对类似的问题。

问题：

在启动Java Web应用程序时，可能会遇到"javax.servlet.ServletException: Servlet.init() for servlet springmvc threw exception"异常。这个异常表明在初始化Servlet时出现了问题，从而阻止了应用程序的正常启动。

错误原因:依赖版本不兼容问题,主要检查spring-webmvc依赖版本,最好换成与其他spring依赖相同的版本

HTTP Status 500 – Internal Server Error

Type Exception Report

Message Servlet.init() for servlet springmvc threw exception

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

javax.servlet.ServletException: Servlet.init() for servlet springmvc threw exception
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
	org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)
	org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)
	org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)
	org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)
	org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)
	java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	java.lang.Thread.run(Thread.java:748)

Root Cause

java.lang.NoClassDefFoundError: org/springframework/web/util/pattern/PathPatternParser
	java.lang.Class.getDeclaredMethods0(Native Method)
	java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
	java.lang.Class.privateGetPublicMethods(Class.java:2902)
	java.lang.Class.getMethods(Class.java:1615)
	org.springframework.util.ReflectionUtils.findConcreteMethodsOnInterfaces(ReflectionUtils.java:634)
	org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:613)
	org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:524)
	org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:510)
	org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:243)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineConstructorsFromBeanPostProcessors(AbstractAutowireCapableBeanFactory.java:1069)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1042)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
	org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
	org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
	org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
	org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:776)
	org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:861)
	org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541)
	org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:702)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:668)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:716)
	org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:591)
	org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:530)
	org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:170)
	javax.servlet.GenericServlet.init(GenericServlet.java:158)
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
	org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)
	org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)
	org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)
	org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)
	org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)
	java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	java.lang.Thread.run(Thread.java:748)

Root Cause

java.lang.ClassNotFoundException: org.springframework.web.util.pattern.PathPatternParser
	org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1352)
	org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1180)
	java.lang.Class.getDeclaredMethods0(Native Method)
	java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
	java.lang.Class.privateGetPublicMethods(Class.java:2902)
	java.lang.Class.getMethods(Class.java:1615)
	org.springframework.util.ReflectionUtils.findConcreteMethodsOnInterfaces(ReflectionUtils.java:634)
	org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:613)
	org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:524)
	org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:510)
	org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:243)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineConstructorsFromBeanPostProcessors(AbstractAutowireCapableBeanFactory.java:1069)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1042)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
	org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
	org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
	org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
	org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:776)
	org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:861)
	org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541)
	org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:702)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:668)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:716)
	org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:591)
	org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:530)
	org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:170)
	javax.servlet.GenericServlet.init(GenericServlet.java:158)
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
	org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)
	org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)
	org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)
	org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)
	org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)
	java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	java.lang.Thread.run(Thread.java:748)

Note The full stack trace of the root cause is available in the server logs.

原因：

依赖问题：可能是项目的依赖库版本不匹配，或者某些依赖库冲突，导致初始化过程中出现异常。
配置问题：可能是项目的配置文件（如web.xml或注解配置）中存在错误或不一致，导致Servlet初始化失败。
代码问题：可能是在Servlet的初始化方法中出现了异常，例如在初始化时抛出了未捕获的异常。
资源问题：可能是在Servlet初始化时尝试获取某些资源（如数据库连接、文件等）失败，导致异常抛出。

解决方法：

检查依赖：确保项目的依赖库版本一致，不产生冲突。可以使用构建工具（如Maven或Gradle）来管理依赖。
检查配置：仔细检查项目的配置文件，确保其中的配置项正确且一致。特别是在web.xml或注解配置中的配置项。
查看日志：查看服务器日志以获取更多关于异常的详细信息，有助于定位问题。
排查代码：检查Servlet的初始化方法（通常是init()方法），确保其中不会抛出未捕获的异常。
资源管理：如果涉及到资源获取，确保资源的可用性，如数据库连接是否正常，文件是否存在等。

解决方法

添加依赖包: < !–springmvc核心依赖–>

<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-webmvc</artifactId>
  <version>4.3.2.RELEASE</version>
</dependency>

总结：

"javax.servlet.ServletException: Servlet.init() for servlet springmvc threw exception"异常通常是由依赖问题、配置问题、代码问题或资源问题引起的。通过仔细排查，根据具体情况采取相应的解决方法，可以有效地解决这个异常，使应用程序正常启动。

本文参与腾讯云自媒体同步曝光计划，分享自作者个人站点/博客。

原始发表：2023-08-12，如有侵权请联系 cloudcommunity@tencent.com 删除

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