学习spring必须要的java包

学习spring不可少的包，commons-logging.java,hamcrest-core-1.3.java,junit-4.11.java,log4j-1.2.17.java,mysql-connector-java-5.1.39-bin.java,spring-aop-4.2.9.RELEASE.java,spring-beans-4.2.9.RELEASE.java，spring-context-4.2.9.RELEASE.java,spring-core-4.2.9.RELEASE.java,spring-expression-4.2.9.RELEASE.java,spring-jdbc-4.2.9.RELEASE.java,spring-tx-4.2.9.RELEASE.java