使用wget直接下载Oracle
浏览器登录Oracle后下载，然后进入下载内容查看链接，复制链接地址
wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u112-b15/jdk-8u112-linux-x64.tar.gz
只要后面的鉴权字段有就能成功
wget –limit-rate=2M “http://download.oracle.com/otn/linux/oracle11g/R2/linux.x64_11gR2_database_2of2.zip?AuthParam=1411460800_39ecddedf6c41df7cd0426c00320***”