core
https://docs.spring.io/spring/docs/5.2.0.RELEASE/spring-framework-reference/core.html#spring-core
mvc
'https://docs.spring.io/spring/docs/5.1.10.RELEASE/spring-framework-reference/web.html#mvc
boot
https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/
https://docs.spring.io/spring-restdocs/docs/2.0.3.RELEASE/reference/html5/#introduction
https://spring.io/guides/gs/rest-service/
Spring5:@Autowired注解、@Resource注解和@Service注解
https://javaee.github.io/servlet-spec/downloads/servlet-3.1/Final/servlet-3_1-final.pdf