官方地址：
JD-GUI：http://java.decompiler.free.fr/
JD-Eclipse插件：http://java.decompiler.free.fr/jd-eclipse/update
使用方法如下:
To install "JD-Eclipse" on your IDE:
- open window "Help > Software Updates > Find and Install",
- create a new remote site,
- name it,
- use this URL : "http://java.decompiler.free.fr/jd-eclipse/update",
- and finish the installation process.
To switch back to JadClipse:
- open the window "Window > Preferences > General > Editors > File Associations",
- and select JadClipse as default editor for the "
.class" files.