Java config for Spring: correct deploy but 404 error

Question

I am creating a basic Spring MVC + Repositories + Security configuration. I leveraged THIS GUIDE and got to the configuration I am reporting below. According to that configuration, I would expect some welcome page to show up at localhost:8080/HPLAN/welcome; I also get redirected to that URL after typing localhost:8080/HPLAN/, but I always get a 404 error. Server log does not receive any request (server log does not show any "no request mapping"). At the deployment location "HPLAN" folder is present. I also need to mention that database tables are NOT created.

So, my configuration is this:

1. Security

   @Configuration
   @EnableWebSecurity
   public class SecurityConfig extends WebSecurityConfigurerAdapter {
   @SuppressWarnings("unused")
   @Autowired
   private DataSource dataSource;
   
   @Autowired
   private CustomUserDetailsService customUserDetailsService;
   
   @Override
   protected void configure(AuthenticationManagerBuilder registry) throws Exception {
       registry.userDetailsService(customUserDetailsService);
   }
   
   @Override
   public void configure(WebSecurity web) throws Exception {
       web.ignoring().antMatchers("/resources/**"); // #3
   }
   
   @Override
   protected void configure(HttpSecurity http) throws Exception {
       http.csrf().disable().authorizeRequests().antMatchers("/login", "/login/form**", "/register", "/logout")
               .permitAll() // #4
               .antMatchers("/admin", "/admin/**").hasRole("ADMIN") // #6
               .anyRequest().authenticated() // 7
               .and().formLogin() // #8
               .loginPage("/login/form") // #9
               .loginProcessingUrl("/login").failureUrl("/login/form?error").permitAll(); // #5
   }
   

   }

2. Persistence

   @Configuration
   @EnableTransactionManagement
   @EnableJpaRepositories(basePackages = "com.tek4b.hplan.repositories")
   public class PersistenceConfig {
   
   @Autowired
   private Environment env;
   
   @Value("${init-db:false}")
   private String initDatabase;
   
   @Bean
   public PlatformTransactionManager transactionManager() {
       EntityManagerFactory factory = entityManagerFactory().getObject();
       return new JpaTransactionManager(factory);
   }
   
   @Bean
   public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
       LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();
   
       HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
       vendorAdapter.setGenerateDdl(Boolean.TRUE);
       vendorAdapter.setShowSql(Boolean.TRUE);
   
       factory.setDataSource(dataSource());
       factory.setJpaVendorAdapter(vendorAdapter);
       factory.setPackagesToScan("com.tek4b.hplan.entities");
   
       Properties jpaProperties = new Properties();
       jpaProperties.put("hibernate.hbm2ddl.auto", env.getProperty("hibernate.hbm2ddl.auto"));
       factory.setJpaProperties(jpaProperties);
   
       factory.afterPropertiesSet();
       factory.setLoadTimeWeaver(new InstrumentationLoadTimeWeaver());
       return factory;
   }
   
   @Bean
   public HibernateExceptionTranslator hibernateExceptionTranslator() {
       return new HibernateExceptionTranslator();
   }
   
   @Bean
   public DataSource dataSource() {
       BasicDataSource dataSource = new BasicDataSource();
       dataSource.setDriverClassName(env.getProperty("jdbc.driverClassName"));
       dataSource.setUrl(env.getProperty("jdbc.url"));
       dataSource.setUsername(env.getProperty("jdbc.username"));
       dataSource.setPassword(env.getProperty("jdbc.password"));
       return dataSource;
   }
   
   @Bean
   public DataSourceInitializer dataSourceInitializer(DataSource dataSource) {
       DataSourceInitializer dataSourceInitializer = new DataSourceInitializer();
       dataSourceInitializer.setDataSource(dataSource);
       ResourceDatabasePopulator databasePopulator = new ResourceDatabasePopulator();
       databasePopulator.addScript(new ClassPathResource("db.sql"));
       dataSourceInitializer.setDatabasePopulator(databasePopulator);
       dataSourceInitializer.setEnabled(Boolean.parseBoolean(initDatabase));
       return dataSourceInitializer;
   }
   

   }

3. AppConfig

   @Configuration
   @ComponentScan(basePackages = {
       "com.tek4b.hplan" }, excludeFilters = @ComponentScan.Filter(type = FilterType.REGEX, pattern = {
               "com.tek4b.hplan.web.*" }) )
   @PropertySource(value = { "classpath:application.properties" })
   @EnableScheduling
   @EnableAspectJAutoProxy
   @EnableCaching
   public class AppConfig {
   
   @Autowired
   private Environment env;
   
   @Bean
   public static PropertySourcesPlaceholderConfigurer placeHolderConfigurer() {
       return new PropertySourcesPlaceholderConfigurer();
   }
   
   @Bean
   public CacheManager cacheManager() {
       return new ConcurrentMapCacheManager();
   }
   

   }

4. MVC:

   @Configuration
   @ComponentScan(basePackages = { "com.tek4b.hplan.web" })
   @EnableWebMvc
   public class WebMvcConfig extends WebMvcConfigurerAdapter {
   
   @Override
   public void addViewControllers(ViewControllerRegistry registry) {
       super.addViewControllers(registry);
       registry.addViewController("login/form").setViewName("login");
       registry.addViewController("welcome").setViewName("welcome");
       registry.addViewController("admin").setViewName("admin");
   }
   
   @Bean
   public ViewResolver resolver() {
       InternalResourceViewResolver url = new InternalResourceViewResolver();
       url.setPrefix("/WEB-INF/jsp/");
       url.setSuffix(".jsp");
       return url;
   }
   
   @Override
   public void addResourceHandlers(ResourceHandlerRegistry registry) {
       registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
   }
   
   @Override
   public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
       configurer.enable();
   }
   
   @Bean(name = "messageSource")
   public MessageSource configureMessageSource() {
       ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
       messageSource.setBasename("classpath:messages");
       messageSource.setCacheSeconds(5);
       messageSource.setDefaultEncoding("UTF-8");
       return messageSource;
   }
   
   @Bean
   public SimpleMappingExceptionResolver simpleMappingExceptionResolver() {
       SimpleMappingExceptionResolver b = new SimpleMappingExceptionResolver();
       Properties mappings = new Properties();
       mappings.put("org.springframework.dao.DataAccessException", "error");
       b.setExceptionMappings(mappings);
       return b;
   }
   

   }

5. Web.xml

   <?xml version="1.0" encoding="UTF-8"?>
   <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns="http://java.sun.com/xml/ns/javaee"
   xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
   version="3.0">
   <display-name>HPLAN</display-name>
   

My project structure:

I created the database and the server seems to start correctly:

Aug 13, 2015 7:26:11 PM org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: <hidden by me>;.
Aug 13, 2015 7:26:11 PM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:HPLAN' did not find a matching property.
Aug 13, 2015 7:26:11 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-bio-8080"]
Aug 13, 2015 7:26:11 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["ajp-bio-8009"]
Aug 13, 2015 7:26:11 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 694 ms
Aug 13, 2015 7:26:11 PM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Catalina
Aug 13, 2015 7:26:11 PM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.47
Aug 13, 2015 7:26:12 PM org.apache.catalina.util.SessionIdGenerator createSecureRandom
INFO: Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [281] milliseconds.
Aug 13, 2015 7:26:14 PM org.apache.catalina.core.ApplicationContext log
INFO: No Spring WebApplicationInitializer types detected on classpath
Aug 13, 2015 7:26:14 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-bio-8080"]
Aug 13, 2015 7:26:14 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["ajp-bio-8009"]
Aug 13, 2015 7:26:14 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 2767 ms

Then it stands like that regardless of my requests. What's wrong with it?

============UPDATE 6. AppInitializer class:

public class SpringWebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {

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

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

    @Override
    protected String[] getServletMappings() {

        return new String[] { "/" };
    }

    @Override
    protected Filter[] getServletFilters() {
        return new Filter[] { new DelegatingFilterProxy("springSecurityFilterChain"),
                new OpenEntityManagerInViewFilter() };
    }

}

Answer 1

In your function getServletMappings(), change

return new String[] { "/" };

to

return new String[] { "/*" };

Source : Spring Java Config vs Jboss 7

Answer 2

Your project doesn't have the "Dynanic Web Project" Facet.

Right-Click the project, and select "Properties". And then click on "Project Facet". Select the "Dynamic Web Project" and proceed with next steps there.

UPDATE If that is OK, then check the "Deployment Assembly" in Project Properties tab. The source folders should be having target of "WEB-INF/classes", and other such things related to deployment.

If that is also OK, then you need to go to the "Servers" view, and delete the server from there. Restart Eclipse. And then Add a new Server.