基于注解实现Spring整合Mybatis

Spring核心配置文件ApplicationContext.xml对应修改为配置类：SpringConfig

@Configuration
@ComponentScan("com.itheima")
@PropertySource("classpath:jdbc.properties")
@Import({JDBCConfig.class,MybatisConfig.class})
public class SpringConfig {
}

数据源配置类：

public class JDBCConfig {

    @Value("${jdbc.driver}")
    private String driver;
    @Value("${jdbc.url}")
    private String url;
    @Value("${jdbc.username}")
    private String username;
    @Value("${jdbc.password}")
    private String password;

    @Bean("dataSource")
    public DataSource getDataSource(){
        DruidDataSource ds = new DruidDataSource();
        ds.setDriverClassName(driver);
        ds.setUrl(url);
        ds.setUsername(username);
        ds.setPassword(password);
        return ds;
    }
}

mybatis核心配置文件转化为 MybatisConfig

public class MybatisConfig {

    @Bean
    public SqlSessionFactoryBean getSqlSesionFactoryBean(@Autowired DataSource dataSource){
        SqlSessionFactoryBean ssfb = new SqlSessionFactoryBean();
        ssfb.setTypeAliasesPackage("com.itheima.domain");
        ssfb.setDataSource(dataSource);
        return ssfb;
    }

    @Bean
    public MapperScannerConfigurer getMapperScannerConfigurer(){
        MapperScannerConfigurer mp = new MapperScannerConfigurer();
        mp.setBasePackage("com.itheima.dao");
        return mp;
    }
}