mybatis驼峰映射

@Configuration
@MapperScan(basePackages = {"***dao.mapper"},sqlSessionFactoryRef = "DbSqlFactory")
public class DataSourceConfig {

    @ConfigurationProperties(prefix = "spring.datasource.")
    @Bean("DataSource")
    @Primary
    public DataSource Db(){
       return DataSourceBuilder.create().build();
    }

    @Bean(name = "DbSqlFactory")
    public SqlSessionFactory Factory(@Qualifier("DataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean bean=new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
        bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath*://trade/dao/mapping/*.xml"));
        org.apache.ibatis.session.Configuration configuration = new org.apache.ibatis.session.Configuration();
        configuration.setMapUnderscoreToCamelCase(true);
        bean.setConfiguration(configuration);
        System.out.println(" datasource init successfully");
        return bean.getObject();
    }

    @Bean(name = "SqlTemplate")
    public SqlSessionTemplate Template(@Qualifier("DbSqlFactory") SqlSessionFactory factory)
    {
        return new SqlSessionTemplate(factory);
    }
    @Bean(name = "TransactionManager")
    public DataSourceTransactionManager transactionManager(){
        return new DataSourceTransactionManager(this.Db());
    }

}