java.lang.ClassNotFoundException: javax.servlet.jsp.jstl.core.Config

Question

When I am run my application after entering the URL, this exception is coming.I am using Eclipse and Tomcat7.0.35. I also added Jstl.jar and jstl1.2.jar

My code is

java.lang.ClassNotFoundException: javax.servlet.jsp.jstl.core.Config
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1714)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
    at org.apache.myfaces.view.jsp.JspViewDeclarationLanguage.buildView(JspViewDeclarationLanguage.java:91)
    at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:78)
    at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:241)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:199)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

Can you provide the list of the libraries in you classpath? seems you are missing the `jstl.jar` in your classpath — araknoid, Feb 27 '13 at 13:47
I added jsf-myfaces,jstl,primefaces libraries in both classpath and buildpath — Ssv, Feb 27 '13 at 13:52
@Sagar You need to ensure that the jars are in the `WEB-INF/lib` directory. See my answer. — dan, Feb 27 '13 at 13:53
find the bug-- For some reason jstl jars are removing every time from my eclipse deployment path — Ssv, Feb 27 '13 at 14:04

score 73 · Answer 1 · edited May 23 '17 at 12:17

73

The error is telling you it cannot find the class because it is not available in your application.

If you are using Maven, make sure you have the dependency for jstl artifact:

<dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
</dependency>

If you are not using it, just make sure you include the JAR in your classpath. See this answer for download links.

edited May 23 '17 at 12:17

Community

1
1

answered Feb 27 '13 at 13:50

Raul Rene

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@RaulGogo-I am not using Maven – Ssv Feb 27 '13 at 13:57
The last paragraph is for the case in which you don't have Maven. See the answer in the link provided. – Raul Rene Feb 27 '13 at 14:01
For anyone else who might have the same issue I did, my mistake was using `javax.servlet.jsp.jstl` as the groupId instead of `javax.servlet` – secondbreakfast Nov 11 '20 at 23:07

score 58 · Accepted Answer · edited Jun 24 '15 at 13:53

58

Download the following jars and add it to your WEB-INF/lib directory:

edited Jun 24 '15 at 13:53

Thierry

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answered Feb 27 '13 at 14:00

Sudhakar

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4

In my case, I only needed to add jstl-1.2.jar. – Marvo Aug 07 '15 at 23:48
Added and worked for me. – Martin Karari Jan 30 '19 at 07:04
It works!! You can find the jar here: https://mvnrepository.com/artifact/javax.servlet/jstl/1.2 – Miguel Rodríguez Jun 28 '20 at 16:11

score 9 · Answer 3 · answered Feb 27 '13 at 13:49

By default, Tomcat container doesn’t contain any jstl library. To fix it, declares jstl.jar in your Maven pom.xml file if you are working in Maven project or add it to your application's classpath

<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>jstl</artifactId>
    <version>1.2</version>
  </dependency>

score 3 · Answer 4 · answered Feb 27 '13 at 13:47

3

Probably the jstl libraries are missing from your classpath/not accessible by tomcat.

You need to add at least the following jar files in your WEB-INF/lib directory:

jsf-impl.jar
jsf-api.jar
jstl.jar

answered Feb 27 '13 at 13:47

dan

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... and do **not** fiddle with project's *Build Path* setting. Untouch it and undo if necessary any changes you made there. Just dropping the JAR in `/WEB-INF/lib` is sufficient. See also http://stackoverflow.com/tags/jstl/info Note that JSTL 1.2 is only one JAR file, not two. So if you have `jstl.jar` and `jstl-1.2.jar`, you should remove the first one. – BalusC Feb 27 '13 at 14:11
@BalusC Good point. Thanks BalusC. – dan Feb 27 '13 at 14:13

score 3 · Answer 5 · answered Feb 27 '13 at 13:47

3

Add jstl jar to your application classpath.

answered Feb 27 '13 at 13:47

score 1 · Answer 6 · answered Feb 17 '14 at 19:56

Just a quick comment: sometimes Maven does not copy the jstl-.jar to the WEB-INF folder even if the pom.xml has the entry for it.

I had to manually copy the JSTL jar to /WEB-INF/lib on the file system. That resolved the problem. The issue may be related to Maven war packaging plugin.

score 1 · Answer 7 · answered Mar 11 '15 at 12:43

1

Add JSTL library as dependency to your project (javax.servlet.jsp.jstl.core.Config is a part of this package). For example, if you were using Gradle, you could write in a build.gradle:

dependencies {
    compile 'javax.servlet:jstl:1.2'
}

answered Mar 11 '15 at 12:43

naXa stands with Ukraine

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score 1 · Answer 8 · answered Apr 13 '15 at 23:46

1

I had the same problem. Go to Project Properties -> Deployment Assemplbly and add jstl jar

answered Apr 13 '15 at 23:46

José Manuel

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java.lang.ClassNotFoundException: javax.servlet.jsp.jstl.core.Config

8 Answers8

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