Context.ContextLoaderListener in your Spring-based Java Net utility.
Trigger: This error comes if you find yourself utilizing the Spring MVC framework in your Java Net utility and configured org.springframework.net.context.ContextLoaderListener as a listener in your deployment descriptor also referred to as net.xml, however the JAR which comprises this class isn’t out there within the net utility’s CLASSPATH.
This can be a crucial class within the Spring MVC framework, as it’s used to load your spring configuration recordsdata like applicatoin-Context.xml and others, outlined within the context-param component of net.xml of your Java spring net utility, as proven under :
<context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:application-Context.xml</param-value> </context-param> <listener> <listener-class> org.springframework.net.context.ContextLoaderListener </listener-class> </listener>
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What causes java.lang.ClassNotFoundException: org.Springframework.Net.Context.ContextLoaderListener?
Like another ClassNotFoundException error, you first want to seek out out the JAR file on which this class is bundled after which add that JAR into the suitable place, just like the WEB-INF/lib folder of your net utility.
In order that the net utility class loader like org.apache.catalina.loader.WebappClassLoader can see this JAR file. You may see in under stack hint under that it is the WebappClassLoader that did not load this class :
SEVERE: Error configuring utility listener of class org.springframework.net.context.ContextLoaderListener java.lang.ClassNotFoundException: org.springframework.net.context .ContextLoaderListener at org.apache.catalina.loader.WebappClassLoader .loadClass(WebappClassLoader.java:1676) at org.apache.catalina.loader.WebappClassLoader .loadClass(WebappClassLoader.java:1521) at org.apache.catalina.core.DefaultInstanceManager .loadClass(DefaultInstanceManager.java:415) at org.apache.catalina.core.DefaultInstanceManager .loadClassMaybePrivileged(DefaultInstanceManager.java:397) at org.apache.catalina.core.DefaultInstanceManager .newInstance(DefaultInstanceManager.java:118) at org.apache.catalina.core.StandardContext.listenerStart( StandardContext.java:4660) at org.apache.catalina.core.StandardContext$1.name( StandardContext.java:5226) at org.apache.catalina.core.StandardContext$1.name( StandardContext.java:5221) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Employee.runTask( ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Employee.run( ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662)
2. The right way to remedy java.lang.ClassNotFoundException: org.Springframework.Net.Context.ContextLoaderListener in Java
1. If you’re utilizing Spring model 3.0 then add spring-web.jar into CLASSPATH, I imply, simply put it contained in the WEB-INF/lib folder.
2. If you’re operating in Spring 2.0 or decrease model then simply add spring.jar into your utility’s CLASSPATH, the identical simply put it inside WEB-INF/lib listing.
3. If spring.jar or spring-web.jar is already in CLASSPATH then your drawback isn’t on account of JAR however on account of a wrongly configured classpath. See my put up on find out how to take care of ClassNotFoundException to troubleshoot additional.
4. If you’re utilizing Maven then add the next dependency in your pom.xml file :
<dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <model>3.2.6.RELEASE</model> </dependency>
5. If you’re getting java.lang.ClassNotFoundException : org.Springframework.Net.Context.ContextLoaderListener error In Eclipse and Tomcat, then you may also attempt the next steps to ensure maven dependencies are in CLASSPATH and visual to Tomcat’s net utility class loader. All it’s good to do is add maven dependencies into your eclipse venture’s net deployment meeting.
- Choose Mission, Proper-click, and select Properties.
- Select the “Deployment Meeting”.
- Click on the “Add…” button on the fitting facet.
- Select “Java Construct Path Entries” from the menu of directive kind and click on “Subsequent”.
- Choose “Maven Dependencies” from the Java Construct Path Entries menu and click on “End”.
You will notice maven dependencies added to the net deployment meeting definition by now.
6. If you’re getting java.lang.ClassNotFoundException : org.Springframework.Net.Context.ContextLoaderListener error in beforehand working venture and you’re positive that you just not executed something which causes this error then you may attempt “Clear Tomcat Work Listing” or just “Clear..”. That is purported to discard all revealed states and republish from scratch.
![java.lang.ClassNotFoundException:org.Springframework.Web.Context.ContextLoaderListener [Solution]](https://2.bp.blogspot.com/-5pm_1e0V3ek/VXxAszbjrFI/AAAAAAAADC0/ebR2GAQV3PQ/w537-h298/Spring%2BContext%2BClass%2BLoader%2BListener%2Bnot%2Bfound%2Berror.png)
That is all about find out how to remedy java.lang.ClassNotFoundException : org.Springframework.Net.Context.ContextLoaderListener error in Spring-based Java net utility. Principally it is the case of lacking the spring-web.jar file as hardly anybody is operating with spring 2.0 now, but it surely’s good to do not forget that it’s good to add spring.jar into the classpath for the older spring model and spring-web.jar for the newer spring model, ranging from Spring 3.0.
Additional Studying
Spring MVC books and sources
Spring Net Utility Developer Certification
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P. S. – If you wish to study Spring Framework from scratch, take a look at John Thomson’s Spring Framework 5: Newbie to Guru course on Udemy. It is one of the vital up-to-date programs to study in Spring and covers Spring 5.0 and Reactive Programming as effectively. It is also very inexpensive and you should purchase in simply $9.9 on a number of Udemy gross sales.
