ssm搭建，maven，javaConfig

基于java配置SSM，eclipse

新建maven，web项目

....

项目结构：

jar包

spring和DispatcherServlet上下文

  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();
    }
  }

spring 上下文

  @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;
    }
  }