maven下载地址：https://archive.apache.org/dist/maven/maven-3/
svn下载地址：https://tortoisesvn.net/downloads.zh.html
ffmpeg下载地址：http://ffmpeg.org/download.html
typora下载地址：https://www.typora.io/#windows
zookeeper下载地址：https://downloads.apache.org/zookeeper/
Jacob下载地址：https://sourceforge.net/projects/jacob-project/files/jacob-project/