1,JDK:http://www.oracle.com/technetwork/java/javase/downloads/java-archive-javase8-2177648.html
2,spring:http://repo.springsource.org/libs-release-local/org/springframework/spring/
3,spring官方文档:http://docs.spring.io/spring/docs/current/spring-framework-reference/htmlsingle/
4,mybatis中文文档:http://www.mybatis.org/mybatis-3/zh/getting-started.html