Mule custom library using java class throwing NoClassDefFoundError

Question

I have developed a custom mule library to verify and generate jwt token using java module. I imported my library in Mule application and added it to shared library. The custom library uses com.auth0.jwt package. I added it to mule-artifact.json in exportedPackages but still got error NoClassDefFoundError.

Error:

"Invocation of static Method 'main(java.lang.String[])' from Class 'com.mypackage.oauth.CustomAuth' with arguments [java.util.ArrayList<?> args] resulted in an error.\nExpected arguments are [java.lang.String[] args].\nCause: java.lang.NoClassDefFoundError - com/auth0/jwt/JWT"

mule-artifact.json in my custom library:

{
  "minMuleVersion": "4.4.0",
  "classLoaderModelLoaderDescriptor": {
        "id": "mule",
        "attributes": {
            "exportedPackages": [
                "com.mypackage.oauth"
            ]
        }
    }
}

Custom library java class is using these import statements:

package com.mypackage.oauth;

import com.auth0.jwt.JWT;
import com.auth0.jwt.interfaces.DecodedJWT;

And I added it to my mule application in shared library of mule-plugin:

<plugin>
                <groupId>org.mule.tools.maven</groupId>
                <artifactId>mule-maven-plugin</artifactId>
                <version>${mule.maven.plugin.version}</version>
                <extensions>true</extensions>
                <configuration>
                    <classifier>mule-application</classifier>
                    <sharedLibraries>
                        <sharedLibrary>
                            <groupId>com.mypackage</groupId>
                            <artifactId>bi-auth-utils</artifactId>
                        </sharedLibrary>
                    </sharedLibraries>
                </configuration>
            </plugin>

And as a dependency:

<dependency>
            <groupId>com.mypackage</groupId>
            <artifactId>bi-auth-utils</artifactId>
            <version>1.0.9</version>
            <classifier>mule-plugin</classifier>
    </dependency>

I have already added jwt dependency in library pom.xml and imported xml file in the mule application to import the flows of mule library.

Answer 1

thank you @Aled and @Jim for your comments.

I fixed the issue by adding jwt library to the configuration of sharedLibrary in the Mule application:

<plugin>
                <groupId>org.mule.tools.maven</groupId>
                <artifactId>mule-maven-plugin</artifactId>
                <version>${mule.maven.plugin.version}</version>
                <extensions>true</extensions>
                <configuration>
                    <classifier>mule-application</classifier>
                    <sharedLibraries>
                        <sharedLibrary>
                            <groupId>com.microsoft.sqlserver</groupId>
                            <artifactId>mssql-jdbc</artifactId>
                        </sharedLibrary>
                        <sharedLibrary>
                            <groupId>com.mypackage</groupId>
                            <artifactId>bi-auth-utils</artifactId>
                        </sharedLibrary>
                        <sharedLibrary>
                            <groupId>com.auth0</groupId>
                            <artifactId>java-jwt</artifactId>
                        </sharedLibrary>
                    </sharedLibraries>
                </configuration>
            </plugin>