Java – multi module project configuration based on spring MVC annotations

I implemented two Maven based independent web projects using spring MVC, hibernate and Jax rs

Item 1: parent program

<packaging>pom</packaging>
    <modules>
        <module>../child1</module>
        <module>../child2</module>
    </modules>

Child 1:

<packaging>jar</packaging>
    <parent>
        <groupId>com.xyz.alpha</groupId>
        <artifactId>parent</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <relativePath>../parent</relativePath>
    </parent>

Child 2:

<packaging>jar</packaging>

    <dependency>
            <groupId>com.xyz.alpha</groupId>
            <artifactId>child1</artifactId>
            <version>2.0.2</version>
    </dependency>
    <parent>
        <groupId>com.xyz.alpha</groupId>
        <artifactId>parent</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <relativePath>../parent</relativePath>
    </parent>

But I need to configure the project in Java so that it will scan the parent's components as well as child and execution projects At present, I configure it separately for each project:

AppIntializer. java

public class AppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {

    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class[] { AppConfig.class };
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return null;
    }

    @Override
    protected String[] getServletMappings() {
        return new String[] { "/" };
    }
}

AppConfig. java

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "com.x.y")
public class AppConfig extends WebMvcConfigurerAdapter{


    @Bean
    public ViewResolver viewResolver() {
        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
        viewResolver.setViewClass(JstlView.class);
        viewResolver.setPrefix("/WEB-INF/views/");
        viewResolver.setSuffix(".jsp");
        return viewResolver;
    }

    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**");
    }

    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        configurer.enable();
    }

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");


    }

}

HibernateConfiguration. java

@Configuration
@EnableTransactionManagement
@ComponentScan({ "com.x.y.configuration" })
@PropertySource(value = { "classpath:application.properties" })
public class HibernateConfiguration {

    @Autowired
    private Environment environment;

    @Bean
    public LocalSessionfactorybean sessionFactory() {
        LocalSessionfactorybean sessionFactory = new LocalSessionfactorybean();
        sessionFactory.setDataSource(dataSource());
        sessionFactory.setPackagesToScan(new String[] { "com.x.y.model" });
        sessionFactory.setHibernateProperties(hibernateProperties());
        return sessionFactory;
     }

    @Bean
    public DataSource dataSource() {
        DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setDriverClassName(environment.getrequiredProperty("jdbc.driverClassName"));
        dataSource.setUrl(environment.getrequiredProperty("jdbc.url"));
        dataSource.setUsername(environment.getrequiredProperty("jdbc.username"));
        dataSource.setPassword(environment.getrequiredProperty("jdbc.password"));
        return dataSource;
    }

    private Properties hibernateProperties() {
        Properties properties = new Properties();
        properties.put("hibernate.dialect",environment.getrequiredProperty("hibernate.dialect"));
        properties.put("hibernate.show_sql",environment.getrequiredProperty("hibernate.show_sql"));
        properties.put("hibernate.format_sql",environment.getrequiredProperty("hibernate.format_sql"));
        properties.put("hibernate.hbm2ddl.auto",environment.getrequiredProperty("hibernate.hbm2ddl.auto"));
        return properties;        
    }

    @Bean
    @Autowired
    public HibernateTransactionManager transactionManager(SessionFactory s) {
       HibernateTransactionManager txManager = new HibernateTransactionManager();
       txManager.setSessionFactory(s);
       return txManager;
    }
}

Solution

If I were you, I would create a third module among parents and use two new children as dependencies Then, you only need to configure the spring for the new module as required