Magento2后台模块moudule其实很简单，可以参考已有的代码，规范写法，就可以开发出自己想要的功能模块，这里给一个基本的后台模块开发示范实例:
To add a menu/sub-menu, check out the following files:
etc/adminhtml/menu.xml
etc/adminhtml/routes.xml
To bind a page to those submenus, check out the following files:
You will notice the path to look like the action parameter from etc/adminhtml/menu.xml
Controller/Adminhtml/SampleOne/Index.php
Controller/Adminhtml/SampleTwo/Index.php
To add content to your freshly created pages, check out the following files:
view/adminhtml/layout/adminsample_sampleone_index.xml
view/adminhtml/templates/sample/one.phtml
To add content to your freshly created pages and pass something to it, You can also check:
view/adminhtml/layout/adminsample_sampletwo_index.xml
Controller/Adminhtml/SampleTwo/Index.php
view/adminhtml/templates/sample/two.phtml
To set and retrieve values from Magento2’s configuration you can check these files:
Controller/Adminhtml/SampleTwo/Index.php
etc/adminhtml/system.xml Configuration menu in Stores/Settings/Configuration is set here
etc/config.xml Default configuration
view/adminhtml/templates/sample/two.phtml
To see how ACLs are made, check these files:
etc/acl.xml
You’ll notice that most resource elements are from etc/adminhtml/menu.xml
To see how to have different layouts, check this file:
view/adminhtml/layout/adminsample_sampletwo_index.xml
To see how we create a custom block and use it, check those files:
Block/Adminhtml/CustomBlock.php
view/adminhtml/layout/adminsample_sampletwo_index.xml
To see how you use block functions, have a look at:
Block/Adminhtml/CustomBlock.php
view/adminhtml/templates/custom/one.phtml
To call a helper from a block you can check:
Block/Adminhtml/CustomBlock.php
Helper/ConfigHelper.php
view/adminhtml/templates/custom/one.phtml
示例文件下载：