[aspectj-users] Hello world Agent with aspectjweaver

[kypdk <kypdkz@xxxxxxxxx>]

Hello,

What I want to do is to trigger the before advice on the agent when the methods run on the generator.jar

Could you help me ,I would greatly appreciate it

regards

java -javaagent:JavaAgent.jar -jar Generator.jar

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.weaver.loadtime.Agent;

import java.io.IOException;
import java.lang.instrument.Instrumentation;
import java.util.jar.JarFile;

@Aspect
public class StartAgent {

    public static void premain(String agentArgs, Instrumentation instrumentation) {
        System.out.println("Java Agent Started");

        String aspectjWeaverPath = "aspectjweaver.jar";
        try {
            instrumentation.appendToBootstrapClassLoaderSearch(new JarFile(aspectjWeaverPath));
        } catch (IOException e) {
            System.out.println(e);
        }

        Agent.premain(agentArgs, instrumentation);
    }

    @Before("execution(* *(..))")
    public void beforeMethodExecution(JoinPoint joinPoint) {
        System.out.println("Before method execution: " + joinPoint.getSignature().toShortString());
    }
}

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-shade-plugin</artifactId>
    <version>3.2.4</version>
    <configuration>
        <transformers>
            <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                <manifestEntries>
                    <Premain-Class>StartAgent</Premain-Class>
                    <Can-Retransform-Classes>true</Can-Retransform-Classes>
                    <Can-Redefine-Classes>true</Can-Redefine-Classes>
                    <Implementation-Version>${project.version}</Implementation-Version>
                </manifestEntries>
            </transformer>
        </transformers>

        <filters>
            <filter>
                <artifact>*:*</artifact>
                <excludes>
                    <exclude>META-INF/*.SF</exclude>
                    <exclude>META-INF/*.DSA</exclude>
                    <exclude>META-INF/*.RSA</exclude>
                </excludes>
            </filter>
        </filters>
    </configuration>
    <executions>
        <execution>
            <phase>package</phase>
            <goals>
                <goal>shade</goal>
            </goals>
        </execution>
    </executions>
</plugin>