【JDK 1.7】
https://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase7-521261.html#jdk-7u80-oth-JPR 选择 Java SE Development Kit 7u80 下面的 Accept License Agreement 然后点击 jdk-7u80-linux-x64.tar.gz 下载
【Tomcat 7】
http://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-7/v7.0.92/bin/apache-tomcat-7.0.92.tar.gz
【MySQL 5.7】
https://dev.mysql.com/downloads/file/?id=482726
