[Spring boot] JSP view resolver + web socket + dev tools

build.gradle

developmentOnly 'org.springframework.boot:spring-boot-devtools'

implementation 'org.apache.tomcat.embed:tomcat-embed-jasper'

implementation 'javax.servlet:jstl'

implementation 'org.springframework.boot:spring-boot-starter-websocket'

implementation 'org.webjars:stomp-websocket:2.3.3'