问题
I would like to run a Main class with exec-maven-plugin and from my dependencies generate documentation like a swagger file.
The annotation that I care is javax.ws.rs.Path which has @Retention(RetentionPolicy.RUNTIME)
My Java code
public class ContextClassReader extends ClassReader {
private static final ExtensibleClassLoader CLASS_LOADER = new ExtensibleClassLoader();
public ContextClassReader(final String className) throws IOException {
super(CLASS_LOADER.getResourceAsStream(className.replace('.', '/') + ".class"));
final URL resource = CLASS_LOADER.getResource(className.replace('.', '/') + ".class");
}
public static ClassLoader getClassLoader() {
return CLASS_LOADER;
}
public static void addClassPath(final URL url) {
CLASS_LOADER.addURL(url);
}
private static class ExtensibleClassLoader extends URLClassLoader {
ExtensibleClassLoader() {
super(new URL[]{});
}
@Override
public void addURL(final URL url) {
super.addURL(url);
}
}
Here is the loading of class and testing it for annotations.
final Class<?> clazz = ContextClassReader.getClassLoader().loadClass(className);
isAnnotationPresent(clazz);
public static boolean isAnnotationPresent(final AnnotatedElement annotatedElement) {
... annotatedElement.getAnnotations().length --> 0
... clazz.getMethods().length() ---> works !
}
My pom.xml
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.6.0</version>
<executions>
<execution>
<goals>
<goal>java</goal>
</goals>
</execution>
</executions>
<configuration>
<executable>java</executable>
<workingDirectory>XXXXXXXXXXXXXXXXXXX</workingDirectory>
<addResourcesToClasspath>true</addResourcesToClasspath>
<additionalClasspathElements>true</additionalClasspathElements>
<includeProjectDependencies>true</includeProjectDependencies>
<includePluginDependencies>true</includePluginDependencies>
<includeProjectDependencies>true</includeProjectDependencies>
<mainClass>XXX.Main</mainClass>
</configuration>
</plugin>
来源:https://stackoverflow.com/questions/51481776/get-annotations-when-exec-maven-plugin-runs-main-does-not-work