1 安装反编译器
eclipse --> Help --> Eclipse Marketplace
搜索decompile
安装Eehanced Class Decompliser
2 设置默认打开方式
Eclipse --> Window --> Preferences
搜索 file associations
General --> Editors --> File Associations
将*.class 和 *.class without source的默认打开方式设置为Class Decompile Viewer
