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ClassNotFoundException: org.springframework.web.context.ContextLoaderListener

There is a problem in my project that is a Spring MVC project. In this project, for the persistence layer, we use Hibernate.

Below is my web.xml data:

 <servlet> <servlet-name>spring</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <context-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/beanRefFactory.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener>

When I try to run this project, I get the following error:

 java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1688) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1533) at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:525) at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:507) at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:124) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4701) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5260) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1525) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1515) at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source)

Here are my jarpathpath details:

 <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/ant-1.6.5.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/ant-antlr-1.6.5.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/antlr-2.7.6.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/aopalliance-1.0.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/asm-attrs.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/asm.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/aspectjweaver-1.6.9.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/c3p0-0.9.1.2.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/c3p0-0.9.1.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/cglib-2.1.3.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/cglib-2.2.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/cglib-nodep-2.2.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/commons-collections-3.1.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/commons-collections-3.2.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/commons-dbcp-1.4.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/commons-logging-1.1.1.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/commons-pool-1.5.3.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/dom4j-1.6.1.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/ehcache-1.2.3.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/ejb3-persistence.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/hibernate-annotations.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/hibernate-commons-annotations.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/hibernate-entitymanager.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/hibernate-search.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/hibernate-validator.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/hibernate3.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/javassist-3.9.0.GA.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/jta-1.1.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/jta.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/lucene-core-2.3.0.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/hibernate/oscache-2.4.1.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/spring/antlr-runtime-3.0.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/spring/commons-beanutils-1.8.3.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/spring/commons-configuration-1.4.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/spring/commons-logging-1.0.4.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/spring/jstl.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/spring/log4j-1.2.16.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/spring/org.springframework.asm-3.0.0.M3.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/spring/org.springframework.beans-3.0.0.M3.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/spring/org.springframework.context-3.0.0.M3.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/spring/org.springframework.context.support-3.0.0.M3.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/spring/org.springframework.core-3.0.0.M3.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/spring/org.springframework.expression-3.0.0.M3.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/spring/org.springframework.jdbc-3.1.1.RELEASE.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/spring/org.springframework.transaction-3.1.1.RELEASE.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/spring/org.springframework.web-3.0.0.M3.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/spring/org.springframework.web.servlet-3.0.0.M3.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/spring/slf4j-api-1.6.6.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/spring/slf4j-log4j12-1.6.6.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/spring/spring-orm-3.2.0.M1.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/spring/spring-oxm-3.2.0.M1.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/spring/standard.jar"/> <classpathentry kind="lib" path="WebContent/WEB-INF/lib/misslenious/mysql-connector-java-5.1.8-bin.jar"/>

Any pointer or help is very noticeable. Thanks in advance.

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4 answers

You are missing the spring -web jar (spring -web-3.2.0.M2.jar) in your path to the class that contains this class.

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ContextLoaderListener is used to integrate Spring with a web application.

To resolve a ClassNotFoundException, complete the following steps:

  • Check the class path (spring -web.jar) spring -web-3.2.0.RELEASE.jar (if you are working with Spring 3.x, add spring.jar to the class path for Spring spring 2.0)

  • If you work with Eclipse and maven, make sure that all dependencies are included correctly in the build path. (Check Java Build Path)

  • Clean up the server by selecting "Clear."

Now try to start the project.

If you are still encountering a problem and are using a maven based project, try the following steps:

1. You need to declare maven-compiler-plugin in the parent project

 <build> [...] <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.2</version> <configuration> <source>1.6</source> <target>1.6</target> </configuration> </plugin> </plugins> [...] </build>

Ensure that compatible classes are compatible with the target version (1.6).

  • Several times included project dependencies conflict, therefore, to resolve conflicts, these commands are executed,

    mvn dependency: tree -Dverbose -Dincludes = collective collections

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1. Try to check if the jar file is included in the lib folder, otherwise sometimes the jar files are damaged, try downloading a new jar and turning it on. 2. Is this the correct path you give for jar? Files. Maybe you indicate the wrong location of the path.

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Try a different version of "spring web.jar".

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Source: https://habr.com/ru/post/925353/

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