Cấu hình Spring MVC bằng Class(WebApplicationInitializer và WebConfig)

Bài này mình sẽ hướng dẫn config Spring MVC bằng class sử dụng project Gradle.

Project như sau:

• build.gradle

plugins {
    id 'java'
    id 'war'
}

group 'casestady_module4'
version '1.0-SNAPSHOT'

sourceCompatibility = 1.8

repositories {
    mavenCentral()
}

dependencies {
    compile group: 'javax.servlet', name: 'javax.servlet-api', version: '3.1.0'
    compile group: 'org.springframework', name: 'spring-core', version: '4.3.17.RELEASE'
    compile group: 'org.springframework', name: 'spring-context', version: '4.3.17.RELEASE'
    compile group: 'org.springframework', name: 'spring-beans', version: '4.3.17.RELEASE'
    compile group: 'org.springframework', name: 'spring-web', version: '4.3.17.RELEASE'
    compile group: 'org.hibernate', name: 'hibernate-core', version: '5.3.0.Final'
    compile group: 'org.hibernate', name: 'hibernate-entitymanager', version: '5.3.0.Final'
    compile group: 'org.springframework', name: 'spring-orm', version: '4.3.17.RELEASE'
    compile group: 'org.springframework', name: 'spring-webmvc', version: '4.3.17.RELEASE'
    compile group: 'org.thymeleaf', name: 'thymeleaf-spring4', version: '3.0.9.RELEASE'
    compile group: 'mysql', name: 'mysql-connector-java', version: '8.0.11'
    compile group: 'org.springframework.data', name: 'spring-data-jpa', version: '1.11.12.RELEASE'
    compile group: 'commons-fileupload', name: 'commons-fileupload', version: '1.3.3'
    compile group: 'javax.validation', name: 'validation-api', version: '2.0.1.Final'
    compile group: 'org.hibernate', name: 'hibernate-validator', version: '6.0.10.Final'
    
}

• WebAppConfig.class

@Configuration
@EnableWebMvc
@EnableTransactionManagement
@EnableJpaRepositories("com.codegym.repositorys.impl")
@ComponentScan("com.codegym.controllers")
public class WebAppConfig extends WebMvcConfigurerAdapter implements ApplicationContextAware {

    private ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }

    
    //Thymeleaf Configuration
    @Bean
    public SpringResourceTemplateResolver templateResolver(){
        SpringResourceTemplateResolver templateResolver = new SpringResourceTemplateResolver();
        templateResolver.setApplicationContext(applicationContext);
        templateResolver.setPrefix("/WEB-INF/views");
        templateResolver.setSuffix(".html");
        templateResolver.setTemplateMode(TemplateMode.HTML);
        templateResolver.setCharacterEncoding("UTF-8");

        return templateResolver;
    }

    @Bean
    public TemplateEngine templateEngine(){
        TemplateEngine templateEngine = new SpringTemplateEngine();
        templateEngine.setTemplateResolver(templateResolver());
        templateEngine.addDialect(new SpringSecurityDialect());
        return templateEngine;
    }

    @Bean
    public ThymeleafViewResolver viewResolver(){
        ThymeleafViewResolver viewResolver = new ThymeleafViewResolver();
        viewResolver.setTemplateEngine(templateEngine());
        viewResolver.setCharacterEncoding("UTF-8");
        return viewResolver;
    }

// configuration Hibernate
    @Bean
    public DataSource dataSource(){
        DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setDriverClassName("com.mysql.jdbc.Driver");
        dataSource.setUrl("jdbc:mysql://localhost:3306/casestudy_modul4");
        dataSource.setUsername( "root" );
        dataSource.setPassword( "123456" );
        return dataSource;
    }
    @Bean

    public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
        LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
        em.setDataSource(dataSource());
        em.setPackagesToScan(new String[]{"com.codegym.models"});
        JpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
        em.setJpaVendorAdapter(vendorAdapter);
        em.setJpaProperties(additionalProperties());
        return em;
    }

    @Bean
    public PlatformTransactionManager transactionManager(EntityManagerFactory emf){
        JpaTransactionManager transactionManager = new JpaTransactionManager();
        transactionManager.setEntityManagerFactory(emf);
        return transactionManager;
    }

    Properties additionalProperties() {
        Properties properties = new Properties();
        properties.setProperty("hibernate.hbm2ddl.auto", "update");
        properties.setProperty("hibernate.dialect", "org.hibernate.dialect.MySQL5Dialect");
        return properties;
    }

    //    JPA configuration
    @Bean
    @Qualifier(value = "entityManager")
    public EntityManager entityManager(EntityManagerFactory entityManagerFactory) {
        return entityManagerFactory.createEntityManager();
    }

• ApplicationInitializer.class

public class ApplicationInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class[]{WebAppConfig.class};
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class[0];
    }


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

Oke vậy là cấu hình thành công rồi giờ mọi người code nhé.