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1.Ioc-samples 中依赖的loc-framework-config-sample 中没有这个config-starter
2.mybatis中的配置文件
中的readDemo等的连接数据库属性在
中没有定义和解析，请问是怎么能够设置连接的，若设置的是默认的数据库，那请问是怎么去设置的呢？
3.

`@Configuration
@ConditionalOnWebApplication(type = Type.SERVLET)
@EnableConfigurationProperties(LocSpringMvcCorsProperties.class)
public class LocSpringMvcAutoConfiguration {

@bean
@ConditionalOnClass(CorsFilter.class)
@ConditionalOnProperty(value = "loc.web.springmvc.cors.enabled")
public Filter corsFilter(LocSpringMvcCorsProperties locSpringMvcCorsProperties) {
UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
source.registerCorsConfiguration(
Optional.ofNullable(locSpringMvcCorsProperties.getPath()).orElse("/**"),
buildConfig(locSpringMvcCorsProperties));
return new CorsFilter(source);
}

private CorsConfiguration buildConfig(LocSpringMvcCorsProperties locSpringMvcCorsProperties) {
CorsConfiguration corsConfiguration = new CorsConfiguration();
Optional.ofNullable(locSpringMvcCorsProperties.getAllowOrigins())
.ifPresent(origins -> origins.forEach(corsConfiguration::addAllowedOrigin));
Optional.ofNullable(locSpringMvcCorsProperties.getAllowHeaders())
.ifPresent(headers -> headers.forEach(corsConfiguration::addAllowedHeader));
Optional.ofNullable(locSpringMvcCorsProperties.getAllowOrigins())
.ifPresent(methods -> methods.forEach(corsConfiguration::addAllowedMethod));
Optional.ofNullable(locSpringMvcCorsProperties.getAllowExposeHeaders())
.ifPresent(headers -> headers.forEach(corsConfiguration::addExposedHeader));
return corsConfiguration;
}`
两次使用了locSpringMvcCorsProperties.getAllowOrigins()，最后一次应该是locSpringMvcCorsProperties.getAllowMethods()

问题1：class和interface封装工具类除了代码默认简写外还有其他区别吗？因为interface没有private，所以还是喜欢用class写。
问题2：前后端分离后，数据用map封装放data好还是这样自定义好？

public class ProblemUtil {

    public static Problem createProblem(Object... datas) {
        ProblemBuilder builder = Problem.builder().withDetail("success").with("code", 0);
            for(Object obj:datas){
                String  name = getName(obj);
                builder.with(name,obj);
            }
        return builder.build();
    }

    public static Problem createProblem(String detail, Object... datas) {
        ProblemBuilder builder = Problem.builder().withDetail(detail).with("code", 0);
            for(Object obj:datas){
                String  name = getName(obj);
                builder.with(name,obj);
            }
        return builder.build();
    }

    public  static Problem createProblem(String detail, int code, Object... datas) {
        ProblemBuilder builder = Problem.builder().withDetail(detail).with("code", code);
            for(Object obj:datas){
                String  name = getName(obj);
                builder.with(name,obj);
            }
        return builder.build();
    }
    private static String getName(Object obj){
        String name = null;
        if(obj instanceof List){
            name = ((List) obj).get(0).getClass().getName()+"s";

        }else {
            name  = obj.getClass().getName();
        }
        return tolowFirstCase(name.substring(name.lastIndexOf(".")+1));
    }
    private static String tolowFirstCase(String str) {
        char[] c = str.toCharArray();
        c[0] = (char) (c[0]-(32)); //ASCII
        return c.toString();
    }

}

建义在mybatis-start里添加对mybatis-plus的支持，这样对于单表的操作，基本上不用写任何sql

`@SpringBootApplication(exclude = { DataSourceAutoConfiguration.class,DataSourceTransactionManagerAutoConfiguration.class })
@EnableTransactionManagement
public class SampleMybatisApplication {

public static void main(String[] args) throws Exception {
	SpringApplication app = new SpringApplication(
			SampleMybatisApplication.class);
	app.run(args);
}

@Autowired
private HotMapper hotMapper;
@Autowired
private SecondHotMapper secondHotMapper;

@Transactional("firstTransactionManager")
@RequestMapping(value = "/transactional1", method = RequestMethod.GET)
public String transactional1() {
	hotMapper.deleteById(10);
	return "";
}

@Transactional("secondTransactionManager")
@RequestMapping(value = "/transactional2", method = RequestMethod.GET)
public String transactional2() {
	secondHotMapper.deleteById(10);
	return "";
}

}`

我的HotMapper 和 SecondHotMapper 是对应两个数据源的mapper,如果想添加事务的时候就必须像上面代码一样指定Transactional的名字，请问大神有什么好的办法，不需要业务层去关心当前使用的哪个事务么？