4.0.0 org.example SpringMvc pom 1.0-SNAPSHOT day01 day02 day03 8 8 org.springframework spring-webmvc 5.1.9.RELEASE javax.servlet servlet-api 2.5 javax.servlet.jsp jsp-api 2.2 javax.servlet jstl 1.2 commons-fileupload commons-fileupload 1.3.1 commons-io commons-io 2.4