Spring SpringMVC Mybatis整合纯注解配置

 

@Configuration//声明这个是配置类
@EnableTransactionManagement//事务管理
@MapperScan({"com/rhl/mapper"})//扫描持久层
@ComponentScan("com.rhl.service") //根据定义的扫描路径，把符合扫描规则的类装配到springIOC容器中
@Import({MybatisConfig.class,JdbcConfig.class}) //导入外部配置
public class SpringConfig {
}

JDBC抽取配置

@PropertySource("classpath:jdbc.properties")
public class JdbcConfig {
    @Value("${jdbc.url}")
    private String url;
    @Value("${jdbc.password}")
    private String password;
    @Value("${jdbc.driver}")
    private String driver;
    @Value("${jdbc.username}")
    private String username;

    //设置连接池，数据源
    @Bean
    public DataSource dataSource(){
        DruidDataSource dataSource = new DruidDataSource();
        dataSource.setDriverClassName(driver);
        dataSource.setUrl(url);
        dataSource.setUsername(username);
        dataSource.setPassword(password);
        return dataSource;
    }
    //设置事务管理器 (声明式事务)
    @Bean
    public PlatformTransactionManager transactionManager(DataSource dataSource){
        //DataSourceTransactionManager搭配mybatis
        DataSourceTransactionManager ds = new DataSourceTransactionManager();
        ds.setDataSource(dataSource);
        return ds;
    }
}

Mybaits配置

public class MybatisConfig {
    @Bean
    public SqlSessionFactoryBean sqlSessionFactory(DataSource dataSource){
        SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
        factoryBean.setDataSource(dataSource);
        factoryBean.setTypeAliasesPackage("com.rhl.pojo");
        return factoryBean;
    }
这里可以用MapperScan注解代替 
扫描dao层
//    @Bean
//    public MapperScannerConfigurer mapperScannerConfigurer(){
//        MapperScannerConfigurer msc = new MapperScannerConfigurer();
//        msc.setBasePackage("com.rhl.dao");
//        return msc;
//    }
}

servlet配置

集成 AbstractAnnotationConfigDispatcherServletInitializer可以快速初始化

public class ServletConfig extends AbstractAnnotationConfigDispatcherServletInitializer {
    protected Class<?>[] getRootConfigClasses() {
        //指定spring配置加载(根配置)
        return new Class[]{SpringConfig.class};
    }

    protected Class<?>[] getServletConfigClasses() {
        //指定springmvc配置加载
        return new Class[]{SpringMvcConfig.class};
    }

    protected String[] getServletMappings() {
        //配置springmvc拦截路径为 / (全路径)
        return new String[]{"/"};
    }
    //中文乱码过滤器
    @Override
    protected Filter[] getServletFilters() {
        CharacterEncodingFilter encodingFilter = new CharacterEncodingFilter();
        encodingFilter.setEncoding("utf-8");
        return new Filter[]{encodingFilter};
    }
}

　　

@Configuration
@ComponentScan("com.rhl.controller")
@EnableWebMvc //开启json格式自动转换
public class SpringMvcConfig {
}