ssm搭建，maven，javaConfig

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项目结构：

  public class DemoWebApplicationInitializer     extends AbstractAnnotationConfigDispatcherServletInitializer  {     @Override     protected Class<?>[] getRootConfigClasses() {         // TODO Auto-generated method stub         return new Class<?>[] {RootConfig.class};     }     @Override     protected Class<?>[] getServletConfigClasses() {         // TODO Auto-generated method stub         return new Class<?>[] {WebConfig.class};     }     @Override     protected String[] getServletMappings() {         // TODO Auto-generated method stub         return new String[] {"/"};     }   }

DispatcherServlet

  @Configuration   @EnableWebMvc   @ComponentScan(basePackages = {"com.getword.controller"})   public class WebConfig extends WebMvcConfigurerAdapter {     @Bean     public ViewResolver viewResolver() {         InternalResourceViewResolver resolver = new InternalResourceViewResolver();         resolver.setPrefix("/WEB-INF/views/");         resolver.setSuffix(".jsp");         resolver.setExposeContextBeansAsAttributes(true);         return resolver;     }     /**      * 静态资源      */     @Override     public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {         // TODO Auto-generated method stub         configurer.enable();     }   }

  @Configuration   @ComponentScan(basePackages = {"com.getword"},         excludeFilters = {@Filter(type = FilterType.ANNOTATION, value = EnableWebMvc.class)})   @Import(DataSourceConfig.class)   public class RootConfig {     @Bean     public BeanNameAutoProxyCreator autoProxyCreator() {         BeanNameAutoProxyCreator autoProxyCreator = new BeanNameAutoProxyCreator();         autoProxyCreator.setProxyTargetClass(true);         // 设置要创建代理的那些Bean的名字         autoProxyCreator.setBeanNames("*Service");         autoProxyCreator.setInterceptorNames("transactionInterceptor");         return autoProxyCreator;     }   }

DataSourceConfig

  @Configuration   @MapperScan("com.getword.dao")   public class DataSourceConfig {     private final static Logger LOG = Logger.getLogger(DataSourceConfig.class);     private String driver = "com.mysql.jdbc.Driver";;     private String url = "jdbc:mysql://localhost:3306/spring?characterEncoding=UTF-8&serverTimezone=UTC";     private String username = "root";     private String password = "123";     @Bean     public BasicDataSource dataSource() {         LOG.info("Initialize the BasicDataSource...");         BasicDataSource dataSource = new BasicDataSource();         dataSource.setDriverClassName(driver);         dataSource.setUrl(url);         dataSource.setUsername(username);         dataSource.setPassword(password);         return dataSource;     }     // mybatis的配置     @Bean     public SqlSessionFactoryBean sqlSessionFactoryBean() throws IOException {         ResourcePatternResolver resourcePatternResolver = new PathMatchingResourcePatternResolver();         SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();         sqlSessionFactoryBean.setDataSource(dataSource());         sqlSessionFactoryBean.setMapperLocations(resourcePatternResolver.getResources("classpath*:mappers/*.xml"));         sqlSessionFactoryBean.setTypeAliasesPackage("com.getword.domain");// 别名，让*Mpper.xml实体类映射可以不加上具体包名         return sqlSessionFactoryBean;     }        // 事务管理器 对mybatis操作数据库事务控制，spring使用jdbc的事务控制类     @Bean(name = "transactionManager")     public DataSourceTransactionManager dataSourceTransactionManager() {         DataSourceTransactionManager dataSourceTransactionManager = new DataSourceTransactionManager();         dataSourceTransactionManager.setDataSource(dataSource());         return dataSourceTransactionManager;     }        @Bean(name = "transactionInterceptor")     public TransactionInterceptor interceptor() {         TransactionInterceptor interceptor = new TransactionInterceptor();         interceptor.setTransactionManager(dataSourceTransactionManager());         Properties transactionAttributes = new Properties();         transactionAttributes.setProperty("save*", "PROPAGATION_REQUIRED");         transactionAttributes.setProperty("del*", "PROPAGATION_REQUIRED");         transactionAttributes.setProperty("update*", "PROPAGATION_REQUIRED");         transactionAttributes.setProperty("get*", "PROPAGATION_REQUIRED,readOnly");         transactionAttributes.setProperty("find*", "PROPAGATION_REQUIRED,readOnly");         transactionAttributes.setProperty("*", "PROPAGATION_REQUIRED");         interceptor.setTransactionAttributes(transactionAttributes);         return interceptor;     }   }