静态资源:
1,默认情况下,Springboot会从classpath下的/static、/public、/resources、/META-INF/resources下加载静态资源;
2,可以通过修改spring.resources.staticLocations来修改静态资源加载地址;
spring.resources.static-locations=classpath:/META-INF/resources/,classpath:/resources/,classpath:/static/,classpath:/public/,classpath:/mydir
3,因为应用是打成jar包,所以之前的src/main/webapp不会加载;