Springboot文档（中文，英文）
中文文档地址：
https://my.oschina.net/geekidentity/blog/872888
英文文档地址：
https://docs.spring.io/spring-boot/docs/current/reference/pdf/spring-boot-reference.pdf
spring详解
https://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/web/socket/sockjs/client/package-summary.html