代碼配置:

/*
 *Servlet3.0提供了ServletContainerInitializer來(lái)實(shí)現(xiàn)容器啟動(dòng)時(shí)注冊(cè)
 *Servlet佑刷、Filter慎冤、Listener叠蝇，它可以用來(lái)替代web.xml文件,而Spring mvc
 *提供了更為簡(jiǎn)單的WebApplicationInitializer接口颅停，并提供了一個(gè)
 *AbstractContextLoaderInitializer卷谈，它可以動(dòng)態(tài)注冊(cè)DispatcherServlet
 *為了實(shí)現(xiàn)零配置吸重，Spring直接給我們提供了一個(gè)現(xiàn)成的類
  */
org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer

例如：

public class MyWebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {

    @Override
    protected Class<?>[] getRootConfigClasses() {
        //返回配置Ioc容器的類的類對(duì)象
        return new Class[]{AppConfig.class};
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        //返回配置Spring MVC的類的類對(duì)象
        return new Class[]{WebConfig.class};
    }

    @Override
    protected String[] getServletMappings() {
        //返回配置的urlPatterns
        return new String[] {"/"};
    }
}

接著是Ioc容器的配置，給出以下模板

@Configuration //表示這是一個(gè)配置
@ComponentScan(basePackages = "com.qfedu.springmvc") //掃描該包下面的所有打了spring注解的類
@EnableAspectJAutoProxy //允許AspectJ自動(dòng)生成代理
@EnableTransactionManagement //啟用注解事務(wù)怪瓶，即可以使用@Transactional注解來(lái)控制事務(wù)
public class AppConfig {
    @Bean
    public DataSource dataSource() {
        BasicDataSource source = new BasicDataSource();
        source.setDriverClassName("com.mysql.jdbc.Driver");
        source.setUsername("root");
        source.setPassword("ily");
        source.setUrl("jdbc:mysql://localhost:8080/springmvc?"
            + "useUnicode=true&characterEncoding=utf8");
        source.setInitialSize(10);
        return source;
    }

    @Bean
    public LocalSessionFactoryBean sessionFactory(DataSource source) {
        LocalSessionFactoryBean bean = new LocalSessionFactoryBean();
        bean.setDataSource(source);
        bean.setHibernateProperties(getHibernateProperties());
        bean.setAnnotatedPackages("com.qfedu.springmvc.entiy");
        return bean;
    }

    @Bean
    public HibernateTransactionManager transactionManager(SessionFactory sessionFactory) {
        return new HibernateTransactionManager(sessionFactory);
    }

    private Properties getHibernateProperties() {
        Properties prop = new Properties();
        prop.setProperty("hibernate.dialect", "org.hibernate.dialect.MySQL57InnoDBDialect");
        prop.setProperty("hibernate.show_sql", "true");
        prop.setProperty("hibernate.format_sql", "true");
        return prop;
    }
}

spring mvc配置萧落，作用與*-servlet.xml文件相當(dāng)

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "com.qfedu.springmvc.controller")
/**
 * 繼承 WebMvcConfigurerAdapter，實(shí)現(xiàn)靜態(tài)資源的處理
 */
public class WebConfig extends WebMvcConfigurerAdapter {

    @Bean
    public ViewResolver internalResourceViewResolver() {
        InternalResourceViewResolver viewResolver 
          = new InternalResourceViewResolver("/WEB-INF/jsp/", ".jsp");
        viewResolver.setViewClass(JstlView.class);
        return viewResolver;
    }
    /**
     *配置一個(gè)處理程序來(lái)轉(zhuǎn)發(fā)未處理的請(qǐng)求洗贰，轉(zhuǎn)發(fā)到Servlet容器的“默認(rèn)”servlet找岖。
     */
    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        configurer.enable();
    }
}