1.spring boot默认加载文件的路径是 
/META-INF/resources/ 
/resources/ 
/static/ 
/public/ 
这些目录下面, 当然我们也可以从spring boot源码也可以看到 

private static final String[] CLASSPATH_RESOURCE_LOCATIONS = {  
        "classpath:/META-INF/resources/", "classpath:/resources/",  
        "classpath:/static/", "classpath:/public/" };

所有本地的静态资源都配置在了classpath下面了, 而非在webapp下了 

2.目录结构详见附件 

项目地址https://github.com/leelance/spring-boot-all