基于java配置SSM，eclipse

新建maven，web项目

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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;    }  }

注意：mapper的命名空间必须和对应的接口的全路径一致！！！

idea，从maven简单java项目转web项目

新建maven项目

1. 新建maven项目

1. 填写group id和artifictId，next

1. 输入项目名称，finish
2. 配置maven，次步骤最后在新建项目之前
3. 

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项目结果如下：

添加web模块

1. 项目结构->Modules->add->web

1. 删除web.xml

1. 设置web项目根路径

• 添加artifact

1. 配置Tomcat
2. 此时项目结构

此时可以访问webapp下的静态文件了

1. jar包，pom.xml

注意:使用maven时也要添加servlet依赖，注意作用域。此时可以使用servlet了

spring配置

同eclipse。

源码附件