hi Chris,
I am following advice from ClassNotFoundException: javax.servlet.jsp.JspFactory
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ClassNotFoundException: javax.servlet.jsp.JspFactory
I have a maven-based app that I copied exactly and tried to run mvn jetty:run
And now getting this error:Cau...
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where it says scope provided must be added
Anwyay, I have removed the scope and the jars that are put in the lib folder in
WEB-INF, it is no use.
The same error still persists.
I removed <scope>provided<scope> on all the Jakarat ee replated dependencies as
shown in the pom just now.
Hope you could advise me now.
Tks.
On Wednesday, March 1, 2023 at 10:19:18 PM GMT+8, Christopher Schultz
<ch...@christopherschultz.net> wrote:
Karen,
On 3/1/23 09:09, Karen Goh wrote:
> Hello experts,
> I need desperate help to fix this java.lang.ClassNotFoundException:
> jakarta.servlet.jsp.JspFactory
> Here are my dependencies which I have installed but still Tomcat will still
> purge out the ClassNotFound error :
> <dependencies>
> <dependency>
> <groupId>com.fasterxml.jackson.core</groupId>
> <artifactId>jackson-databind</artifactId>
> <version>2.13.3</version>
> </dependency>
> <!--
>https://mvnrepository.com/artifact/com.squareup.retrofit2/retrofit -->
> <dependency>
> <groupId>com.squareup.retrofit2</groupId>
> <artifactId>retrofit</artifactId>
> <version>2.9.0</version>
> </dependency>
> <dependency>
> <groupId>com.squareup.retrofit2</groupId>
> <artifactId>converter-gson</artifactId>
> <version>2.9.0</version>
> </dependency>
> <!-- https://mvnrepository.com/artifact/com.google.code.gson/gson -->
> <dependency>
> <groupId>com.google.code.gson</groupId>
> <artifactId>gson</artifactId>
> <version>2.10.1</version>
> </dependency>
> <!--
>https://mvnrepository.com/artifact/jakarta.servlet.jsp.jstl/jakarta.servlet.jsp.jstl-api
> -->
> <dependency>
> <groupId>jakarta.servlet.jsp.jstl</groupId>
> <artifactId>jakarta.servlet.jsp.jstl-api</artifactId>
> <version>3.0.0</version>
> <scope>provided</scope>
> </dependency>
> <!--
>https://mvnrepository.com/artifact/jakarta.platform/jakarta.jakartaee-web-api
>-->
> <dependency>
> <groupId>jakarta.platform</groupId>
> <artifactId>jakarta.jakartaee-web-api</artifactId>
> <version>10.0.0</version>
> <scope>provided</scope>
> </dependency>
> <dependency>
> <groupId>jakarta.servlet</groupId>
> <artifactId>jakarta.servlet-api</artifactId>
> <version>6.0.0</version>
> <scope>provided</scope>
> </dependency>
> <dependency>
> <groupId>org.glassfish.web</groupId>
> <artifactId>jakarta.servlet.jsp.jstl</artifactId>
> <version>3.0.1</version>
> <scope>provided</scope>
> </dependency>
> <dependency>
> <groupId>jakarta.el</groupId>
> <artifactId>jakarta.el-api</artifactId>
> <version>5.0.0</version>
> <scope>provided</scope>
> </dependency>
>
> I have even attached the jar - jakarta.servlet.jsp.jstl-3.0.1.jar
> jakarta.servlet.jsp.jstl-api-3.0.0.jarto the lib folder.
> Java 17, Eclipse on Windows 10.
> I am not sure how to tackle this problem, as I need to get an assignment
> done.Would appreciate advice from this group.Tks.
Your POM shows both jstl artifacts as "provided" meaning they won't be
downloaded and bundled into your application. I think you actually need
to allow those to be downloaded as they are not provided by Tomcat (I
think! I'm no JSTL expert).
But Tomcat definitely ships with a copy of
jakarta.servlet.jsp.JspFactory so if you are adding a JAR which contains
that class, you are likely causing a conflict.
Tomcat really should be prohibiting that class from being provided by an
application, but maybe you have put it somewhere that is confusing the JVM.
Which lib/ folder did you put those JARs into?
-chris
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