eclipse安装JAD反编译class/jar插件

安装插件：
1.启动eclipse；
2.点击菜单"Help > Install New Software..."；
3.点击按钮"Add..."增加新仓库，地址为：http://jd.benow.ca/jd-eclipse/update/
　注：如果地址无效，查看https://github.com/java-decompiler/jd-eclipse/blob/master/jd.ide.eclipse.site/site.xml获取最新地址；
4.安装"Java Decompiler Eclipse Plug-in"插件，一直下一步、下一步。


设置文件关联：
Click on "Window > Preferences > General > Editors > File Associations"

"*.class" : Eclipse "Class File Viewer" is selected by default.
"*.class without source" : "JD Class File Viewer" is selected by default.